Nimble Storage Inc - FORM 10-K

Nimble Storage Inc - FORM 10-K - April 2, 2015

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

(Mark One)

þ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended January 31, 2015

¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

001-36233

(Commission File No.)

Nimble Storage, Inc.

(Exact name of Registrant as specified in its charter)


Delaware		26-1418899
(State or other jurisdiction of incorporation or organization)		*(I.R.S. Employer Identification No.)*

211 River Oaks Parkway

San Jose, California

95134

(Address of principal executive offices)

(Zip Code)

(408) 432-9600

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:


Title of each class		Name of each exchange on which registered
Common Stock, par value $0.001 per share		New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act:

None

Indicate by check mark if the Registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes ¨ No þ

Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes ¨ No þ

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 (Exchange Act) during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes þ No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes þ No ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of Registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

Indicate by check mark whether the Registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No þ

The aggregate market value of voting stock held by non-affiliates of the Registrant on July 31, 2014, based on the closing price of $25.88 for shares of the Registrant’s common stock as reported by the New York Stock Exchange, was approximately $25.6 million. Shares of common stock held by each executive officer, director and their affiliated holders have been excluded in that such persons may be deemed to be affiliates. This determination of affiliate status is not necessarily a conclusive determination for other purposes. The registrant has no non-voting common equity.

As of March 25, 2015, there were approximately 77.5 million shares of the Registrant’s Common Stock outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Registrant’s definitive Proxy Statement for the Registrant’s 2015 Annual Meeting of Stockholders are incorporated by reference in Part III of this Annual Report on Form 10-K to the extent stated herein. The Proxy Statement will be filed with the Securities and Exchange Commission pursuant to Regulation 14A within 120 days of the Registrant’s fiscal year ended January 31, 2015.

TABLE OF CONTENTS


		Page
	Part I		1
Item 1.	Business		1
Item 1A.	Risk Factors		14
Item 1B.	Unresolved Staff Comments		35
Item 2.	Properties		35
Item 3.	Legal Proceedings		35
Item 4.	Mine Safety Disclosures		36

	Part II		37
Item 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities		37
Item 6.	Selected Financial Data		39
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations		40
Item 7A.	Quantitative and Qualitative Disclosures about Market Risk		57
Item 8.	Financial Statements and Supplementary Data		62
Item 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure		91
Item 9A.	Controls and Procedures		91
Item 9B.	Other Information		91

	Part III		92
Item 10.	Directors, Executive Officers and Corporate Governance		92
Item 11.	Executive Compensation		92
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters		92
Item 13.	Certain Relationships and Related Transactions, and Director Independence		92
Item 14.	Principal Accounting Fees and Services		92

	Part IV		93
Item 15.	Exhibits and Financial Statement Schedules		93

PART I

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This report contains forward-looking statements. All statements contained in this report other than statements of historical fact, including statements regarding our future results of operations and financial position, our business strategy and plans and our objectives for future operations, are forward-looking statements. The words “believe,” “may,” “will,” “potentially,” “estimate,” “continue,” “anticipate,” “intend,” “could,” “would,” “project,” “plan,” “expect,” “seek” and similar expressions are intended to identify forward-looking statements. We have based these forward-looking statements largely on our current expectations and projections about future events and trends that we believe may affect our financial condition, results of operations, business strategy, short-term and long-term business operations and objectives and financial needs. These forward-looking statements are subject to a number of risks, uncertainties and assumptions, including those described in the “Risk Factors” section and elsewhere in this report. Moreover, we operate in a very competitive and rapidly changing environment, and new risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties and assumptions, the forward-looking events and circumstances discussed in this report may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements.

You should not rely upon forward-looking statements as predictions of future events. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee that the future results, levels of activity, performance or events and circumstances reflected in the forward-looking statements will be achieved or occur. We undertake no obligation to update publicly any forward-looking statements for any reason after the date of this report to conform these statements to actual results or to changes in our expectations, except as required by law.

As used in this report, the terms “Nimble Storage,” “we,” “us,” and “our” mean Nimble Storage, Inc. and its subsidiaries unless the context indicates otherwise.

ITEM 1. BUSINESS

Overview

Our continuing mission is to engineer and deliver the industry’s most efficient data storage platform. Our Adaptive Flash platform, comprising our CASL flash-optimized file system and our InfoSight cloud-based management software, is delivered as CS-series storage arrays coupled with support services and InfoSight subscription services. It enables IT organizations to accurately predict, manage and deliver the storage required to improve business applications and workloads across their IT environments. There are five foundational benefits that the Adaptive Flash platform provides to IT organizations:

Accelerate the performance of business-enabling applications while simultaneously lowering the cost of capacity associated with storing application data.

Scale storage performance and capacity in line with changing application and user requirements, such that our customers can start with an initial foot-print and scale to very large environments in terms of performance and capacity, in small granular increments without disrupting applications.

Safeguard applications and their associated data with integrated data protection and enterprise-grade reliability to prevent application outages and data loss.

Simplify storage environments with InfoSight. InfoSight is a cloud-based software solution that uses deep data analytics to address customers’ storage management and support needs. It provides IT administrators with actionable intelligence to monitor their storage arrays, preempt support issues, maintain storage health, accurately forecast capacity and performance needs and benefit from best practices gleaned from our entire installed base of customers.

Speed up deployments by leveraging our SmartStack Integrated Infrastructure Solutions. Nimble SmartStack solutions comprise our storage arrays and software combined with partners’ compute, networking and software technologies in the form of reference architectures and best practices for specific workload environments.

Collectively, the Nimble Adaptive Flash platform enables IT organizations to build and manage a more responsive and agile storage environment to keep pace with their rapidly changing business requirements.

Our customer base includes mid-sized enterprises, large global enterprises and cloud-based service providers. Our storage systems and software effectively improve a broad range of business applications and workloads, including virtual desktops, databases, email, collaboration and data analytics. Since shipping our first product in August 2010, our end-customer base has grown rapidly. We had over 40, 270, 1,090, 2,640 and 4,970 end-customers as of January 31, 2011, 2012, 2013, 2014 and 2015. Our end-customers span a range of industries including cloud-based service providers, education, financial services, healthcare, manufacturing, state and local government and technology.

We sell our products and services through a global network of value added resellers and distributors, and also engage our end-customers through our global sales force.

Our Strategy

Our growth strategies include the following:

Extend Our Technology Leadership. We believe that we are disrupting the storage market with our technology platform and our approach to cloud-based management and automation software. We intend to extend our technology leadership by continuing to innovate and invest in research and development to expand the capabilities of our platform into adjacent markets and deliver a broader range of cloud-based management services. To this end, our team of technology experts remains committed to expanding upon the functionality of both CASL and InfoSight in order to address the evolving requirements of the storage market.

Drive Greater Penetration into Our Installed Base of End-Customers. Our installed base of over 4,970 end-customers as of January 31, 2015 provides us a strong foundation in which to drive incremental sales through our “land and expand” model. In the years ended January 31, 2013, 2014 and 2015, approximately 25%, 34% and 41% of the dollar amounts of orders received were from existing end-customers. Our end-customers often deploy Nimble to support a specific application, which may account for only a portion of their overall storage environment and requirements. As we successfully demonstrate the value and benefits of our products, we will continue to help our end-customers migrate additional workloads and applications onto our Adaptive Flash storage platform. We also plan to continue to leverage the predictive capabilities of InfoSight to help our end-customers identify potential expansion opportunities in their storage environments, thereby driving greater share-of-wallet with our customers.

Expand and Deepen Our Channel Presence to Accelerate New Customer Acquisition. We have carefully and systematically cultivated a global channel partner network that has proven a key contributor to our rapid customer growth. To improve the efficiency and reach of our sales channels,

we are evolving our distribution model to contract directly with large distributors. We intend to expand and deepen our value added reseller network across a broad range of industries and geographies to improve our penetration of the storage market in the United States and to continue to grow sales globally.

Continue to Build Our Sales Organization to Fuel Our Growth and Acquire New Customers. We intend to continue to invest in our global sales organization to drive efficient acquisition of new customers. Our focus is on acquiring mid-sized enterprises, large global enterprises and cloud service providers as customers, spanning a broad spectrum of industries and geographies. We will continue to expand our sales organization with additional teams focused on sales into territories, sales to named enterprises, government sales, and teams supporting our channel partners. We also believe we have significant opportunities for international expansion and are continuing to invest in key priority markets.

Expand Our Integration with Technology Alliance Partners. We have invested heavily in integration with applications, hypervisors and servers to make it faster and easier for customers to deploy our storage systems. Through our SmartStack reference architecture initiative, we work closely with leading industry players to provide our customers with integrated solutions to minimize interoperability and integration challenges. Our technology partners include Cisco, Citrix, CommVault, Microsoft, Oracle, SAP, Splunk, Veeam and VMware. We intend to continue to develop SmartStack solutions with our existing technology partners, as well as invest in new technology alliances.

Technology

Our team of storage and software technology experts engineered the Adaptive Flash platform to leverage the performance of flash and the capacity of disk and to improve business applications and simplify IT operations. We believe our key technological differentiator is the software that underpins our platform—our disruptive CASL file system software and our InfoSight cloud-based management software.

Cache Accelerated Sequential Layout (CASL) File System

CASL was engineered to work with commodity flash memory as well as dense, low revolutions-per-minute, or RPM, HDDs. As a result, CASL enables our customers to achieve the performance and capacity requirements of mainstream enterprise applications in a cost effective and compact footprint.

The following graphic illustrates the key steps our CASL file system implements for data layouts.

LOGO

The key attributes of CASL include:

Write-Optimized Data Layout. CASL delivers both fast random writes and high disk utilization by grouping thousands of random I/O writes from applications into large stripes of data that are written sequentially to low RPM disks. Since HDDs are significantly better at handling sequential I/O as compared to random I/O, CASL can extract thousands of sustained write I/Os per second, or IOPS, from a single 7,200 RPM HDD, whereas other storage architectures typically only achieve 50-75 IOPS.

At the same time, the use of low-cost, low RPM HDDs enables us to deliver significantly higher gigabytes per dollar than other storage architectures which use high RPM HDDs or enterprise flash for storage capacity.

Always-on Inline Compression. CASL performs inline compression natively, using a variable-block compression algorithm that allows users to store up to 75% more data per gigabyte with minimal impact on performance or additional latency. Fixed sized blocks that are compressed become variable sized depending on the compressibility of the underlying data. Traditional storage architectures utilize a fixed-size block data layout that is incapable of natively storing variable blocks. As a result, they are typically not able to compress data inline without experiencing performance degradation.

Dynamic Caching. CASL allows for significantly higher throughput and lower latency reads than existing platforms. It leverages a large flash read cache based on commodity SSDs, while intelligently managing the SSD’s performance and endurance, thereby avoiding premature wear of the SSDs. If application patterns change, an intelligent block level index tracks and promotes active data, nearly instantaneously to flash. Compared to architectures that use flash as a tier of data, CASL is significantly more cost-effective in its use of flash because it compresses the data on flash, has been designed to use inexpensive consumer-grade SSDs and eliminates the need for redundant provisioning for data protection. Finally, CASL is more responsive to workload changes and can promote active data at levels as low as 4KB granularity within milliseconds, as opposed to tiered approaches which must move data up and down in megabyte or even gigabyte-sized chunks, often taking hours or days to rebalance tiers.

Efficient, Instant Snapshots and Replication. CASL employs an efficient, reliable method for data protection with instant point-in-time snapshots. CASL snapshots are space efficient because they capture only changes in data down to 4KB granularity and reside on dense, low cost disk, further reducing costs. Furthermore, CASL snapshots eliminate the need to copy data, allowing our systems to store thousands of snapshots with minimal impact on performance. These characteristics allow our customers to take frequent snapshots (hourly or even more often) and to retain those snapshots for weeks to months, significantly reducing their dependence on traditional backups. In addition, our space-efficient snapshots enable efficient replication to an offsite disaster recovery system, resulting in reduced bandwidth costs and the deployment of a disaster recovery solution that is affordable and easy to manage.

Scalability. Our Adaptive Flash platform enables efficient and non-disruptive scaling of both performance and capacity, enabling customers to increase performance or capacity incrementally, which generally eliminates the need for large up-front investments. For increased performance, customers can upgrade controllers for higher throughput and IOPS and upgrade SSDs to accommodate larger amounts of active data. For increased capacity, customers can add additional expansion shelves of HDDs. Our platform can also linearly scale both performance and capacity beyond a single system by combining multiple systems into one centrally-managed scale-out storage cluster. We designed our systems so that these upgrades can be done non-disruptively, generally without taking our systems out of service.

LOGO

InfoSight

Our InfoSight cloud-based management software enables us and our customers to proactively manage and support their storage infrastructure from the cloud.

LOGO

InfoSight is powered by thousands of telemetry sensors that make available over 70 million data points per system per day to our cloud-based InfoSight Engine. Telemetry sensors provide detailed statistics about the health, performance and ongoing operation of our storage systems and their surrounding environments. These sensors allow us and our customers to proactively identify and diagnose potential issues with our systems, often before they impact our customers. The InfoSight Engine applies deep-data analytics to deliver predictive capacity and performance forecasts and systems modeling to us and our customers, improving both our support functions and the storage management experience for our users. We believe the robust, proactive capabilities of InfoSight differentiate our solution from competitive offerings in the marketplace. The InfoSight Portal is a web-based customer portal that provides customers with real-time insights and actionable information that enable them to adhere to storage best practices and to make intelligent decisions about how to evolve their storage environments to support ever-changing workloads. For the second half of the year ended January 31, 2015, the automated Proactive Wellness support capability allowed us to detect approximately 92% of all support issues and automatically resolve approximately 83% of these cases without requiring a single interaction with our customer support team. This level of support automation not only improves customer satisfaction but also enhances the efficiency of our support organization.

Products

Our storage systems are optimized for the mainstream IT applications used by mid-sized enterprises, large global enterprises and cloud-based service providers. We offer a CS-Series of systems with a range of capacities and processing power. Our systems provide adaptive performance for high-I/O applications and high-capacity environments, including Exchange, Oracle, SharePoint, SQL Server, virtual desktop infrastructure, or VDI, and server virtualization. We package our CASL file system software with all of our systems and offer InfoSight as a service to all our customers.

LOGO

Nimble Storage Array (CS Series)

Our products include:

The CS210 and CS215. The CS210 was first introduced in 2011 and the CS215 was first introduced in 2014 to provide value and performance for small to medium-sized IT organizations or remote offices, for workloads such as Microsoft Exchange, database applications and VDI.

The CS300. The CS300 Series systems were introduced in 2014 and are ideal for midsize IT organizations or distributed sites of larger organizations. The CS300 offers the best capacity per dollar for workloads like Microsoft applications, VDI, and virtual server consolidation. The CS300 delivers 1.6x more IOPS than the CS215.

The CS500. The CS500 Series systems were introduced in 2014 and offer advanced performance for larger-scale deployments or IO-intensive workloads, like larger-scale VDI, and Oracle and SQL Server databases, and provides the best performance and IOPS per dollar. The CS500 achieves 5x the performance of the CS215.

The CS700. The CS700 Series systems were introduced in 2014 and are designed for consolidating multiple large-scale critical applications with aggressive performance demands. The CS700 delivers approximately 7x the IOPS of the CS215.

All of our arrays support the iSCSI storage protocol. Fibre Channel protocol support is available with the CS300, CS500 and CS700. At the end of Q3, we introduced Fibre Channel protocol support. As of January 31, 2015, we had 83 customers deploying our Fibre Channel CS-series arrays. These customers span a broad mix of industries and a broad spectrum of workloads.

ES-1 Expansion Shelves. Our ES-1 Expansion Shelves deliver cost effective capacity expansion for the CS Series arrays.

All-Flash Shelf. Our All-Flash Shelf, introduced in 2014, provides the flexibility to scale flash gradually up to 32 TBs per node, or 128 TBs in a four-node scale-out cluster, delivering significant flash density and performance.

CS-series systems interoperate with a wide range of servers, software applications, operating systems and hypervisors, including those from Cisco, Citrix, Microsoft, Oracle and VMware. We have also developed a series of pre-validated reference architectures called SmartStack with these industry partners. Our systems also interoperate with leading backup software applications, and in some cases offer deep integration with backup software such as CommVault Simpana.

Key technical attributes of our product offerings are outlined in the table:


Extreme Performance Family						Ultimate Performance Scale-out Cluster^1,7
Nimble CS-Series Array	CS700					4x CS700
Raw Disk Capacity, Base (TB)²	12	24	36	48	72	1,640
Min. Usable Capacity (TB)⁴	8	16	25	33	50	1,280
Effective Capacity, Base (TB)²	8 - 16	16 - 32	25 - 50	33 - 66	50 - 100	1280 - 2560
Effective Capacity, Maximum (TB)^2,3,5	556	572	590	606	640	2,560
Max Number of Disk Expansion Shelves	Up to 6					24
Base/Max Flash Capacity per Array (GB)	3,200 / 6,400					25,600
Max Flash Capacity with All-Flash Shelf (GB)	32,000					166,400
Power Requirement (Watts)	650					13,000


High Performance Family
Nimble CS-Series Array	CS500
Raw Disk Capacity, Base (TB)²	12	24	36	48	72
Min. Usable Capacity (TB)⁴	8	16	25	33	50
Effective Capacity, Base (TB)²	8 - 16	16 - 32	25 - 50	33 - 66	50 - 100
Effective Capacity, Maximum (TB)^2,3,5	556	572	590	606	640
Max Number of Disk Expansion Shelves	Up to 6
Base/Max Flash Capacity per Array (GB)	1,200 to 6,400
Max Flash Capacity with All-Flash Shelf (GB)	32,000
Power Requirement (Watts)	600


Base Performance Family						Value Array Family
Nimble CS-Series Array	CS300					CS210	CS215
Raw Disk Capacity, Base (TB)²	12	24	36	48	72	8	12
Min. Usable Capacity (TB)⁴	8	16	25	33	50	4	8
Effective Capacity, Base (TB)²	8 - 16	16 - 32	25 - 50	33 - 66	50 - 100	4-8	8 - 16
Effective Capacity, Maximum (TB)^2,3,5	556	572	590	606	640	98	106
Max Number of Disk Expansion Shelves	Up to 6					1	1
Base/Max Flash Capacity per Array (GB)	640 to 3,200					160 to 640	320 to 1,200
Max Flash Capacity with All-Flash Shelf (GB)	16,000					N/A	N/A
Power Requirement (Watts)	500					450	500


	HDD EXPANSION SHELVES					SSD EXPANSION SHELF
	ES1-H25	ES1-H45	ES1-H65	ES1-H85		ES1-AFS
Raw Disk Capacity (TB)²	15	30	45	60		N/A
Min. Usable Capacity (TB)⁴	11	23	34	45		N/A
Effective Capacity, Maximum (TB)^2,5	11 - 22	23 - 46	34 - 68	45 - 90		N/A
Flash Capacity (GB)	160	300	600	1,600		Up to 25.6TB
SAS Connectivity Per Controller	2 x 6Gb SAS (2 modules/shelf)					2x 6Gb SAS (2 modules/shelf)
Power Requirement (Watts)	400					200


	Supported Protocols and Network Connectivity
	CS700	CS500	CS300	CS215	CS210
Supported Protocols	iSCSI Fibre Channel	iSCSI Fibre Channel	iSCSI Fibre Channel	iSCSI	iSCSI
NUMBER OF AVAILABLE INTERFACE CARDS (per array controller)	3	3	3	2	2
Dual-port 1GbE (on board)⁶	1 (included)	1 (included)	1 (included)	1 (included)	1 (included)
Dual-port 1GbE (optional)	N/A	2 only	2 only	1 (included)	1 (included)
Dual-port 10GbaseT (optional)	1 or 2	1 or 2	1 or 2	1 only	N/A
Dual-port 10GbE SFP+ (optional)	1 or 2	1 or 2	1 or 2	1 only	N/A
Dual-port 16Gb FC (optional)	2 or 3	1 or 2	1 only	N/A	N/A
On-Board 6Gb SAS Connectivity Per Controller	2x 4 lane	2x 4 lane	2x 4 lane	1x 4 lane	1x 4 lane


Physical and Environmental Specifications

Dimensions		5.2"H x 17.2"W x 26.5"D
		13.2 cm x 43.7 cm x 67.3 cm
		3 Rack Units

Weight		76 lbs. / 34.5 kg
Weight (All-Flash Shelf)		55 lbs. / 25 kg
Operating Temperature		10 - 35° C (50 - 95° F)
Non-Operating Temperature		0° C - 40° C (32° F - 104° F)
Operating Humidity		8 - 90%
Non-operating Humidity		5 - 95%

NOTES

1.	Maximum performance configuration consists of 4x CS700 arrays, each with ES1-AFS All-Flash expansion shelf and 6x ES1-H85 capacity expansion shelves.

2.	Raw and effective capacities are calculated using Base 10 (i.e., 1 TB = 1,000,000,000,000 bytes) after excluding space for parity, spares, and system overhead; the range represents 0 to 2x compression.

3.	Maximum capacity is the capacity of the base array and maximum number of expansion shelves

4.	Minimum usable capacity denotes the base capacity available to users once parity, spares and system overhead are deducted from overall raw capacity. Compression increases overall effective capacity.

5.	Compression rates vary across applications. 2x compression factor reflected in upper range of effective capacity (based on actual compression rates seen by customers.)

6.	Each array controller has 2x 1GbE ports built in. Additional network interface options vary, per array family.

7.	Max flash capacity shown accounts for SSD capacity included with each ES1 expansion shelf.

Customers

Our target customers are mid-sized and large global enterprises and cloud-based service providers. Our end-customer base has grown by more than 2,330 end-customers over the past year to over 4,970 globally as of January 31, 2015. We sell to end-customers across multiple verticals, including cloud-based service providers, education, financial services, healthcare, manufacturing, state and local government and technology. We did not have any end-customers that represented more than 10% of our total revenue in the years ended January 31, 2013, 2014 and 2015. In the year ended January 31, 2013, one of our distributors accounted for more than 10% of our total revenue. During the year ended January 31, 2014, we consolidated the majority of our North American sales to two distributors, one of which accounted for more than 10% of our total revenue in the year ended January 31, 2014. In the year ended January 31, 2015, each of these two distributors individually accounted for more than 10% of our total revenue.

Customer Service and Support

We combine industry standard product technical support and maintenance with our cloud-based InfoSight and Proactive Wellness support services to deliver an innovative approach to monitoring, diagnostics, support case resolution and capacity planning. We include technical support, maintenance, InfoSight and Proactive Wellness in all purchased support plans.

Cloud-Based InfoSight and Proactive Wellness. We leverage our cloud-based, multi-tenant management software, InfoSight, to transform our customer support function. Through InfoSight and Proactive Wellness, each of our storage systems provides an active monitoring system that automatically detects and notifies us of support problems, enabling us to address customer problems quickly. This cloud-based approach allows our customer support personnel and data scientists to use the gathered telemetry data to predict potential problems, quickly resolve support cases and proactively manage performance and capacity requirements of our customers. We believe the data models developed by our data scientists and our database of telemetry data enable us to provide better support that is more efficient for us and our end-customers. In addition, through InfoSight, we offer the ability for customers to improve storage capacity and performance on their own. We have found this has the combined effect of improved customer satisfaction, but also increases the productivity of our customer support personnel who can be focused on proactive problem resolution.

Support and Maintenance. We offer industry standard technical support on our products to our end-customers and channel partners. End-customers that purchase a support and services contract receive accelerated shipment of replacement parts, onsite hardware repair and support, and software updates and maintenance releases that become available during the support period. Customer support personnel are available 24 hours per day, seven days per week. In addition, end-customers receive access to our InfoSight and Proactive Wellness support, the InfoSight Portal and our NimbleConnect community. Our support and services contracts are typically offered for periods of one to five years. We offer product support for all of our customers, including those customers who purchase our products through our channel partners. In addition, some of our international channel partners offer primary support. We also subcontract with a third party to provide onsite hardware repair and replacement services for our end-customers.

Customer Community. The support capabilities we offer are complemented by NimbleConnect, an active online community of our users, partners and product experts worldwide. Here they can ask questions, engage and get answers from other users as well as our employees. They can also share experiences, insights from their own InfoSight results and best practices with our other users.

Sales and Marketing

Sales. Our sales organization is responsible for customer acquisition, maintaining customer relationships, and overall market development, which includes the management of the relationships with our channel partners, working with our channel partners in winning and supporting end-customers, and acting as the liaison between the end-customers and the marketing and product development organizations. We expect to continue to grow our sales headcount across all markets and expand our presence into countries where we currently do not have sales presence.

Our sales organization is supported by sales engineers with deep technical expertise and responsibility for pre-sales technical support, solutions engineering for our end-customers and technical training for our channel partners.

Channel Program. Our channel partners provide us with a significant amount of new and existing customer opportunities, as well as sell and facilitate the sale of our products to end-customers. We continue to recruit and retain qualified channel partners and train them in our technology and product offerings.

SmartStack. Our SmartStack offerings deliver pre-validated reference architectures that integrate our storage products with leading applications, hypervisors, data protection and server solutions from Cisco, Citrix, CommVault, Microsoft and VMware. In addition, because many of our channel partners are already working with our SmartStack partners, we are better able to accelerate customer adoption.

Marketing. Our outbound marketing is focused on building our brand reputation and market awareness of our platform, driving end-customer demand and operating our channel program. The marketing team consists primarily of product marketing, programs marketing, field marketing, channel marketing, and public relations functions. Marketing activities include demand generation, advertising, managing our partner portal, trade shows and conferences, press and analyst relations, and customer awareness.

Backlog

Product backlog includes orders confirmed for products scheduled to be shipped generally within two weeks to customers. Because of the generally short cycle between order and shipment and occasional customer changes in delivery schedules, we do believe that our product backlog, as of any particular date, is not necessarily indicative of actual product revenue for any future period. Orders for services for multiple years are billed upfront shortly after receipt of an order and are included in deferred revenue until such time revenue recognition obligations are satisfied. Timing of revenue recognition for services may vary depending on the contractual service period or when the services are rendered.

Manufacturing

In the first quarter of the year ended January 31, 2015, we completed the transition of our manufacturing activities from two third-party manufacturers to one, Flextronics, to which we outsource the manufacturing, assembly, quality assurance testing and packaging of our hardware products. We transitioned to Flextronics as our sole contract manufacturer to scale our production requirements with a global vendor and increase our operational leverage. Our contract manufacturer generally procures the components used in our products directly from third-party suppliers.

We designed our manufacturing process to minimize the amount of inventory we retain in order to meet customer demand. We place orders with our contract manufacturer on a purchase order basis, based on our end-customers’ requirements and forecasts provided by our channel partners. In general, we engage our contract manufacturer to manufacture products to meet our forecasted demand. Our agreement with our contract manufacturer requires us to provide forecasts for orders. However, we may cancel or reschedule orders, subject to applicable notice periods and fees, and delivery schedules requested by us in these purchase orders vary based upon our particular needs. Our contract manufacturer works closely with us to ensure design for manufacturability and product quality.

Our agreement with Flextronics establishes basic terms while we negotiate a manufacturing services agreement with Flextronics. This agreement is terminable at any time by either party upon written notice and does not provide for any specific volumes of products. Instead, orders are placed on a purchase order basis.

Research and Development

We focus our research and development efforts primarily on improving our existing technology platform, developing new products and enhancing our cloud-based management services. We work closely with our channel partners and end-customers to understand our users’ current and future needs and have designed a product development process that integrates our end-customers’ feedback.

Continued investment in research and development is critical to our business. We have assembled a team of skilled engineers with extensive experience in the fields of data storage, computing, file system architecture, data analytics, enterprise applications, data protection and replication, support automation and sensing and telemetry systems. These individuals have extensive prior experience with many leading digital storage companies. We have invested significant time and financial resources in the development of our storage solutions. Most of our research and development activities take place at our corporate headquarters in San Jose, California. We also opened a research and development facility in Raleigh, North Carolina in 2013. We intend to dedicate significant research and development resources to continue to improve the capacity, performance, scalability, reliability, recoverability and other features of our storage solutions and to expand our product and service offerings to address other segments of the enterprise storage market.

Our research and development expenses were $16.1 million, $35.2 million and $70.3 million in the years ended January 31, 2013, 2014 and 2015.

Competition

We operate in the intensely competitive data storage market that is characterized by constant change and innovation. Changes in the application requirements, data center infrastructure and trends, and the broader technology landscape result in evolving customer requirements for capacity, performance, data protection and scalability of storage systems. Our main competitors fall into two categories:

large storage system vendors such as EMC and NetApp that offer a broad portfolio of storage systems targeting varied use cases and end markets; and

large systems companies such as Dell and HP that have acquired specialist storage vendors in recent years to complement their internally-developed storage offerings and have the technical and financial resources to bring competitive products to the market.

We also compete to a lesser extent with a number of other smaller companies and certain well-established companies.

We believe we generally compete favorably with our competitors as a result of the foundational innovations spanning our Adaptive Flash Platform, including: CASL and InfoSight. Our product capabilities include performance and capacity efficiency, integrated data protection, ability to address all mainstream applications from our highly scalable platform, ease of use, total cost of ownership and differentiated customer support. However, many of our competitors have substantially greater financial, technical and other resources, greater brand recognition, larger sales and marketing budgets, broader distribution, and larger and more mature intellectual property portfolios. In addition, the emergence of cloud computing and storage-as-a-service may impact both short-term and long-term growth patterns in the markets in which we compete.

Intellectual Property

Our success depends in part upon our ability to use and protect our core intellectual property. We rely on U.S. federal, state, international and common law rights, as well as contractual restrictions including license agreements, confidentiality procedures, non-disclosure agreements with third parties and employment agreements, to protect and control access to our intellectual property.

In addition to contractual arrangements, we protect our intellectual property rights by relying on a combination of copyrights, trademarks, patents, trade secrets, domain names and trade dress. As of January 31, 2015, we had four issued patent and other pending patent applications pending in the United States. Our issued patents expire between 2030 and 2033. Where appropriate, we pursue the registration of trademarks, domain names and service marks in the United States, the European Union and in other jurisdictions.

Employees

As of January 31, 2015, we had 838 employees worldwide, including 447 in sales and marketing, 22 in operations, 239 in research and development, 61 in support and 69 in general and administrative roles. Other than our employees in France, none of our employees is represented by a labor union with respect to his or her employment. We have not experienced any work stoppages.

Information about Segment and Geographic Revenue

Information about segment and geographic revenue is set forth in the section entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and Notes

2 and 11 of our Notes to Consolidated Financial Statements included in Part II, Item 8, “Financial Statements and Supplementary Data” of this Annual Report on Form 10-K.

Corporate Information

We were incorporated in Delaware in November 2007 as Nimble Storage, Inc. We completed our initial public offering in December 2013 and our common stock is listed on the New York Stock Exchange under the symbol “NMBL.” Our principal executive offices are located at 211 River Oaks Parkway, San Jose, California 95134, and our telephone number is (408) 432-9600.

We have registered the trademark Nimble Storage in the United States, the European Union, Australia, Canada, China, Japan, Hong Kong and Taiwan and we have pending trademark applications for the trademark Nimble Storage in other jurisdictions. We have registered the trademark CASL in the United States and the European Union. We have registered the trademark InfoSight in the European Union and Australia and we have pending trademark applications for the trademark InfoSight in the United States and other jurisdictions. We also have registered the trademark NimbleConnect in the United States, European Union, Japan, South Korea, Taiwan, and Australia and we have pending trademark applications for the trademark NimbleConnect in other jurisdictions. The “Nimble Storage” logo, SmartStack and certain product names contained in this Annual Report on Form 10-K are our common law trademarks. This report contains additional trade names, trademarks and service marks of other companies that are the property of their respective owners. We do not intend our use or display of other companies’ trade names, trademarks or service marks to imply a relationship with, or endorsement or sponsorship of us by, these other companies.

Available Information

Our website address is www.nimblestorage.com. Our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, reports filed pursuant to Section 16 under the Securities Exchange Act of 1934, as amended, or the Exchange Act, proxy and information statements and amendments to items filed pursuant to Sections 13(a), 14, 15(d) and 16 of the Exchange Act are filed with the U.S. Securities and Exchange Commission, or the SEC. We are subject to the informational requirements of the Exchange Act and file or furnish reports, proxy statements and other information with the SEC. Such documents and other information filed by the Company with the SEC are available free of charge on our website at www.investors.nimblestorage.com when such reports are available on the SEC’s website.

The public may read and copy any materials filed by Nimble Storage with the SEC at the SEC’s Public Reference Room at 100 F Street, NE, Room 1580, Washington, DC 20549. The public may obtain information on the operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. The SEC maintains an Internet site that contains reports, proxy and information statements and other information regarding issuers that file electronically with the SEC at www.sec.gov.

The contents of the websites referred to above are not incorporated into this report. Further, our references to the URLs for these websites are intended to be inactive textual references only.

ITEM 1A. RISK FACTORS

Investing in our common stock involves a high degree of risk. You should carefully consider the risks and uncertainties described below, together with all of the other information in this report, including our consolidated financial statements and related notes, before investing in our common stock. The risks and uncertainties described below are not the only ones we face. Additional risks and uncertainties that we are unaware of, or that we currently believe are not material, may also become important factors that affect us. If any of the following risks occur, our business, operating results and prospects could be materially harmed. In that event, the price of our common stock could decline, and you could lose part or all of your investment.

Risks Related to Our Business and Our Industry

We have a history of losses, anticipate increasing our operating expenses in the future, and may not be able to achieve or maintain profitability. If we cannot become profitable or maintain our profitability in the future, our business and operating results may suffer.

We have incurred net losses in all fiscal years since our inception, including net losses of $27.9 million, $43.1 million and $98.8 million in the years ended January 31, 2013, 2014 and 2015. As of January 31, 2015, we had an accumulated deficit of $199.9 million. We anticipate that we will continue to operate in a net loss position for the foreseeable future as we continue to develop our technology, enhance our product and service offerings, expand our sales channels, expand our operations and hire additional employees. These efforts may prove more expensive than we currently anticipate, and we may not succeed in increasing our revenue sufficiently, or at all, to offset these higher expenses. In future periods, our profitability could be adversely affected for a number of possible reasons, including slowing demand for our products or services, increasing competition, changes in the way storage services are consumed, a decrease in the growth of the storage market or general economic conditions. If we are unable to meet these risks and challenges as we encounter them, our business and operating results may suffer.

Our limited operating history makes it difficult to evaluate our current business and future prospects.

We were incorporated in November 2007 and shipped our first products in August 2010. The majority of our revenue growth has occurred in the years ended January 31, 2012 and later. Our limited operating history makes it difficult to evaluate our current business and our future prospects, including our ability to plan for and model future growth. We have encountered and will continue to encounter risks and difficulties frequently experienced by rapidly growing companies in constantly evolving industries, including the risks described in this report. If we do not address these risks successfully, our business and operating results will be adversely affected, and our stock price could decline. Further, we have limited historical financial data. As such, any predictions about our future revenue and expenses may not be as accurate as they would be if we had a longer operating history or operated in a more predictable market.

If the market for storage products does not grow as we anticipate, our revenue may not grow and our operating results would be harmed.

We are vulnerable to fluctuations in overall demand for storage products. Our business plan assumes that the demand for storage products will increase as organizations collect, process and store an increasing amount of data. However, if storage markets in general or markets for captive storage experience downturns or grow more slowly than anticipated, or if demand for our products does not grow as quickly as we anticipate, whether as a result of competition, product obsolescence, budgetary constraints of our end-customers, technological changes, unfavorable economic conditions, uncertain geopolitical environments or other factors, we may not be able to increase our revenue sufficiently to ever achieve profitability and our stock price would decline. For example, the emergence of cloud

computing and storage-as-a-service may impact both short-term and long-term growth patterns in the markets in which we compete.

Our revenue growth rate in recent periods may not be indicative of our future performance.

You should not consider our revenue growth rate in recent periods as indicative of our future performance. While we have recently experienced significant revenue growth rates, we may not achieve similar revenue growth rates in future periods. You should not rely on our revenue growth rates for any prior periods as any indication of our future revenue or revenue growth rates.

Our quarterly operating results may fluctuate significantly, which could cause the trading price of our common stock to decline.

Our operating results have historically fluctuated and may continue to fluctuate from quarter to quarter, and we expect that this trend will continue as a result of a number of factors, many of which are outside of our control and may be difficult to predict, including:

the budgeting cycles and purchasing practices of end-customers;

our ability to attract and retain new channel partners and end-customers;

our ability to sell additional products to existing channel partners and end-customers;

changes in end-customer requirements or market needs and our inability to make corresponding changes to our business;

any potential disruption in our sales channels or termination of our relationship with important channel partners;

potential seasonality in the markets we serve;

the timing and success of new product and service introductions by us or our competitors, including the introduction and success of fibre channel products

increasing number and size of orders from Global 5000 companies and other large enterprises and cloud service providers that may require longer sales cycles;

changes in the competitive landscape, including consolidation among our competitors or end-customers;

deferral of orders in anticipation of new products or product enhancements announced by us or our competitors;

material changes in customer adoption of our product or service offerings, such as our Storage on Demand offering, that may change the timing of revenue recognition;

our inability to provide adequate support to our end-customers;

our ability to control the costs of manufacturing our products, including the cost of components;

our inability to fulfill our customers’ orders due to supply chain delays or events that impact our manufacturers or their suppliers;

our inability to adjust certain fixed costs and expenses, particularly in research and development, for changes in demand;

price competition;

the timing of certain payments and related expenses, such as sales commissions;

increases or decreases in our revenue and expenses caused by fluctuations in foreign currency exchange rates, as an increasing portion of our revenue is collected and expenses are incurred and paid in currencies other than the U.S. dollar;

general economic conditions, both domestically and in our foreign markets;

the cost of and potential outcomes of existing and future claims or litigation, which could have a material adverse effect on our business;

future accounting pronouncements and changes in our accounting policies; and

changes in tax laws or tax regulations.

Any one of the factors above or the cumulative effect of some of the factors referred to above may result in significant fluctuations in our operating results. In particular, because we have historically received a substantial portion of sales orders during the last few weeks of each fiscal quarter, we are particularly vulnerable to any delay in order fulfillment, failure to close anticipated orders or any other problems encountered during the last few weeks of each fiscal quarter. This variability and unpredictability could result in our failure to meet our revenue or other operating result expectations or those of investors for a particular period. The failure to meet or exceed such expectations could have a material adverse effect on our business, result of operations and financial condition that could ultimately adversely affect our stock price.

We have limited visibility into future sales, which makes it difficult to forecast our future operating results.

Because of our limited visibility into end-customer demand, our ability to accurately forecast our future revenue is limited. We sell our products primarily through our network of channel partners that accounted for, 89% 92% and 98% of our total revenue in the years ended January 31, 2013, 2014 and 2015. We place orders with our third-party manufacturer based on our forecasts of our end-customers’ requirements and forecasts provided by our channel partners. These forecasts are based on multiple assumptions, each of which might cause our estimates to be inaccurate, affecting our ability to provide products to our end-customers. When demand for our products increases significantly, we may not be able to meet it on a timely basis, and we may need to expend a significant amount of time working with our end-customers to allocate limited supply and maintain positive customer relations, or we may incur additional costs to accelerate the manufacture and delivery of additional products. If we or our channel partners underestimate end-customer demand, we may forego revenue opportunities, lose market share and damage our end-customer relationships. Conversely, if we overestimate demand for our products and consequently purchase significant amounts of components or hold inventory, we could incur additional costs and potentially incur related charges, which could adversely affect our operating results.

Adverse economic conditions or reduced IT spending may adversely impact our business.

Our business depends on the overall demand for IT and on the economic health of our current and prospective customers. In general, worldwide economic conditions remain unstable, and these conditions make it difficult for our current and prospective customers and us to forecast and plan future business activities accurately, and they could cause our customers or prospective customers to reevaluate their decision to purchase our products. Weak global economic conditions, or a reduction in IT spending even if economic conditions improve, could adversely impact our business and operating results in a number of ways, including longer sales cycles, lower prices for our products, reduced bookings and lower or no growth.

We are dependent on a small number of product lines, and the lack of continued market acceptance of these product lines, particularly our CS Series of storage products, would result in lower revenue.

Our CS Series of storage products, or CS products, account for a majority of our total revenue and we anticipate that these products will continue to do so for the foreseeable future. As a result, our revenue could be reduced as a result of:

any decline in demand for these products;

the introduction of products and technologies by us or our competitors that serve as a replacement or substitute for, or represent an improvement over, our CS products;

technological innovations or new communications standards that our CS products do not address;

our failure or inability to predict changes in our industry or end-customers’ demands or to design products or enhancements that meet end-customers’ increasing demands; and

our inability to release enhanced versions of our CS products or new product lines on a timely basis.

Our products handle mission-critical data for our end-customers and are highly technical in nature. If our products have defects, failures occur or end-customer data is lost or corrupted, our reputation and business could be harmed.

Our products are highly technical and complex and are involved in storing and replicating mission-critical data for our end-customers. Our products may contain undetected defects and failures when they are first introduced or as new versions are released. We have in the past and may in the future discover software errors in new versions of our existing products, new products or product enhancements after their release or introduction, which could result in lost revenue. Despite testing by us and by current and potential end-customers, errors might not be found in new releases or products until after commencement of commercial shipments, resulting in loss of or delay in market acceptance. Our products may have security vulnerabilities and be subject to intentional attacks by viruses that seek to take advantage of these bugs, errors or other weaknesses. If defects or failures occur in our products, a number of negative effects in our business could result, including:

lost revenue or lost end-customers;

increased costs, including warranty expense and costs associated with end-customer support;

delays, cancellations, reductions or rescheduling of orders or shipments;

product returns or discounts;

diversion of management resources;

legal claims for breach of contract, product liability, tort or breach of warranty; and

damage to our reputation and brand.

Because our end-customers use our products to manage and protect their data, we could face claims resulting from any loss or corruption of our end-customers’ data due to a product defect. While our sales contracts contain provisions relating to warranty disclaimers and liability limitations, these provisions might not be upheld. Defending a lawsuit, regardless of its merit, is costly and may divert management’s attention and could result in public perception that our products are not effective, even if the occurrence is unrelated to the use of our products. In addition, our business liability insurance coverage might not be adequate to cover such claims. If any data is lost or corrupted in connection with the use or support of our products, our reputation could be harmed and market acceptance of our products could suffer.

We rely on third-party channel partners to sell substantially all of our products, and if our partners fail to perform, our ability to sell and distribute our products and services will be limited, and our operating results will be harmed.

We depend on value added resellers, or VARs, and distributors to sell our products. Our contracts with channel partners typically have a term of one year and are terminable without cause upon written notice to the other party. Our channel partner agreements do not prohibit them from offering competitive products or services and do not contain any purchase commitments. Many of our channel partners also sell our competitors’ products. If our channel partners give higher priority to our competitors’ storage products, we may be unable to grow our revenue and our net loss could increase. Further, in order to develop and expand our channels, we must continue to scale and improve our processes and procedures that support our channel partners, including investments in systems and

training, and those processes and procedures may become increasingly complex and difficult to manage. If we fail to maintain existing channel partners or develop relationships with new channel partners, our revenue opportunities will be reduced.

We receive a substantial portion of our total revenue from a limited number of channel partners, including VARs and distributors, and the loss of, or a significant reduction in, orders from one or more of our major channel partners would harm our business.

We receive a substantial portion of our total revenue from a limited number of channel partners, including distributors and VARs. For the years ended January 31, 2013, 2014 and 2015 our top ten channel partners accounted for, 37%, 47% and 90% of our total revenue. During the third quarter of the year ended January 31, 2014, we transitioned order fulfillment in North America largely to two distributors. The majority of our existing VARs now contract directly with one or both of these two distributors, Avnet, Inc. and Carahsoft Technology Corp. Avnet, Inc. accounted for more than 10% of our revenue for the year ended January 31, 2014 and 2015. Carahsoft Technology Corp. accounted for more than 10% of our revenue for the year ended January 31, 2015, but less than 10% of our revenue for the year ended January 31, 2014. For the year ended January 31, 2013, revenue from another distributor, Advanced Media Services, accounted for more than 10% of our revenue, but less than 10% of our revenue for the year ended January 31, 2014 and 2015. We anticipate that we will continue to depend upon a limited number of channel partners for a substantial portion of our total revenue for the foreseeable future and, in some cases, the portion of our revenue attributable to individual channel partners may increase in the future. The loss of one or more key channel partners or a reduction in sales through any major channel partner would reduce our revenue.

We face intense competition in our market, especially from larger, well-established companies, and we may lack sufficient financial or other resources to maintain or improve our competitive position.

A number of very large corporations have historically dominated the storage market. We consider our primary competitors to be companies that provide enterprise storage products, including Dell, Inc., EMC Corporation, Hewlett-Packard Company and NetApp, Inc. We also compete to a lesser extent with a number of other smaller companies and certain well-established companies. Some of our competitors have made acquisitions of businesses that allow them to offer more directly competitive and comprehensive solutions than they had previously offered. In addition, the emergence of cloud computing and storage-as-a-service may impact both short-term and long-term growth patterns in the markets in which we compete. We expect to encounter new competitors domestically and internationally as other companies enter our market or if we enter new markets.

Many of our existing competitors have, and some of our potential competitors could have, substantial competitive advantages such as:

potential for broader market acceptance of their storage architectures and solutions;

greater name recognition and longer operating histories;

larger sales and marketing and customer support budgets and resources;

broader distribution and established relationships with distribution partners and end-customers;

the ability to bundle storage products with other technology products and services, or offer a broader range of storage solutions to better fit certain customers’ needs;

lower labor and development costs;

larger and more mature intellectual property portfolios;

substantially greater financial, technical and other resources; and

greater resources to make acquisitions.

We rely on a limited number of suppliers, and in some cases single-source suppliers, and any disruption or termination of these supply arrangements, failure to successfully manage our relationships with our key suppliers or component quality problems could delay shipments of our products and damage our channel partner or end-customer relationships.

We rely on a limited number of suppliers, and in some cases single-source suppliers, for several key components of our products. We generally purchase components on a purchase order basis and do not have long-term supply contracts with our suppliers. Our reliance on key suppliers reduces our control over the manufacturing process and exposes us to risks, including reduced control over product quality, production costs, timely delivery and capacity. It also exposes us to the potential inability to obtain an adequate supply of required components because we do not have long-term supply commitments. In particular, replacing the single-source suppliers of our solid state drives and chassis would require a product re-design that could take months to implement.

We generally maintain minimal inventory for repairs, evaluation and demonstration units and acquire components only as needed. We do not enter into long-term supply contracts for these components. As a result, our ability to respond to channel partner or end-customer orders efficiently may be constrained by the then-current availability, terms and pricing of these components. Our industry has experienced component shortages and delivery delays in the past, and we may experience shortages or delays of critical components in the future as a result of strong demand in the industry or other factors. If we or our suppliers inaccurately forecast demand for our products or we ineffectively manage our enterprise resource planning processes, our suppliers may have inadequate inventory, which could increase the prices we must pay for substitute components or result in our inability to meet demand for our products, as well as damage our channel partner or end-customer relationships.

Component quality is particularly important with respect to disk drives. We have in the past and may in the future experience disk drive failures, which could cause our reputation to suffer, our competitive position to be impaired and our end-customers to select other vendors. To meet our product performance requirements, we must obtain disk drives of extremely high quality and capacity. In addition, there are periodic supply-and-demand issues for disk drives and flash memory that could result in component shortages, selective supply allocations and increased prices of such components. We may not be able to obtain our full requirements of components, including disk drives, that we need for our storage products or the prices of such components may increase.

If we fail to effectively manage our relationships with our key suppliers, or if our key suppliers increase prices of components, experience delays, disruptions, capacity constraints, quality control problems in their manufacturing operations or adverse changes to their financial condition, our ability to ship products to our channel partners or end-customers could be impaired and our competitive position and reputation could be adversely affected. Qualifying a new key supplier is expensive and time-consuming. If we are required to change key suppliers or assume internal manufacturing operations, we may lose revenue and damage our channel partner or end-customer relationships.

Because we depend on a single third-party manufacturer to build our products, we are susceptible to manufacturing delays and pricing fluctuations that could prevent us from shipping orders on time, if at all, or on a cost-effective basis, which would cause our business to suffer.

In the first quarter of the year ended January 31, 2015, we completed the transition of our manufacturing activities from two third-party manufactures to one, Flextronics. Our reliance on this third-party manufacturer reduces our control over the manufacturing process and exposes us to risks, including reduced control over quality assurance, product costs and product supply and timing. Any manufacturing disruption by Flextronics could severely impair our ability to fulfill orders. Our current agreement with Flextronics, which is terminable at will or upon short notice by Flextronics, does not

contain any minimum commitment to manufacture our products, and any orders are fulfilled only after a purchase order has been delivered and accepted. As a result, Flextronics may stop taking new orders or fulfilling our orders on short notice or limit our allocations of products. Moreover, our orders represent a relatively small percentage of the overall orders received by Flextronics from its customers; therefore, fulfilling our orders may not be a priority in the event Flextronics is constrained in its ability to fulfill all of its customer obligations. If we are unable to manage our relationship with Flextronics effectively, or if Flextronics suffers delays or disruptions for any reason, experiences increased manufacturing lead-times, capacity constraints or quality control problems in its manufacturing operations, limits our allocations of products, stops taking new orders or fulfilling our orders on short notice, or otherwise fails to meet our future requirements for timely delivery, our ability to ship products to our end-customers would be impaired, and our business and operating results would be harmed.

Our business and operations have experienced rapid growth in recent periods. If we do not effectively manage any future growth or are unable to improve our systems and processes, our operating results could be harmed.

We have experienced rapid growth over the last few years. Our employee headcount and number of end-customers have increased significantly, and we expect to continue to grow our headcount significantly over the next 12 months. For example, from January 31, 2011 to January 31, 2015, our headcount increased from 47 to 838 employees. Since we initially launched our products in August 2010, our number of end-customers grew to over 4,970 as of January 31, 2015. The growth and expansion of our business and product and service offerings places a continuous significant strain on our management, operational and financial resources.

To manage any future growth effectively, we must continue to improve and expand our information technology, or IT, and financial infrastructure, our operating and administrative systems and controls, our enterprise resource planning systems and processes and our ability to manage headcount, capital and processes in an efficient manner. In addition, our systems and processes may not prevent or detect all errors, omissions, or fraud. Our failure to improve our systems and processes, or their failure to operate in the intended manner, may result in our inability to manage the growth of our business and to accurately forecast our revenue and expenses, or to prevent losses. Our productivity and the quality of our products and services may also be adversely affected if we do not integrate and train our new employees quickly and effectively. Failure to manage any future growth effectively could result in increased costs, negatively impact our end-customers’ satisfaction and harm our operating results.

Our ability to sell our products is dependent on the quality of our technical support services, and our failure to offer high quality technical support services could have a material adverse effect on our sales, operating results and end-customers’ satisfaction with our products and services.

Once our products are deployed within our end-customers’ networks, our end-customers depend on our technical support services to resolve any issues relating to our products. We may be unable to respond quickly enough to accommodate short-term increases in end-customer demand for support services. We also may be unable to modify the format of our support services to compete with changes in support services provided by competitors. Increased end-customer demand for these services, without corresponding revenue, could increase costs and adversely affect our operating results. Any failure by us to effectively help our end-customers quickly resolve post-deployment issues or provide high-quality technical support, or a market perception that we do not maintain high-quality support, could harm our reputation and adversely affect our ability to sell our solutions to existing and prospective customers.

If we do not successfully anticipate market needs and develop products and product enhancements that meet those needs, or if those products do not gain market acceptance, our business will suffer.

The storage market is characterized by rapidly evolving technology, customer needs and industry standards. We might not be able to anticipate future market needs or changes in existing technologies, and we might not be able to develop new products or product enhancements to meet such needs, either in a timely manner or at all. For example, if changes in technology result in a significant reduction in the price for flash memory, enterprises may not need to utilize flash-optimized storage in order to cost effectively protect their data. Also, one or more new technologies could be introduced that compete favorably with our storage products or that cause our storage products to no longer be of significant benefit to our end-customers.

The process of developing new technology is complex and uncertain, and we may not be able to develop our products in a manner that enables us to successfully address the changing needs of our end-customers. We must commit significant resources to developing new products and product enhancements before knowing whether our investments will result in products the market will accept. Additionally, we may not achieve the cost savings or the anticipated performance improvements we expect, and we may take longer to generate revenue, or generate less revenue, than we anticipate. If we are not able to successfully identify new product opportunities, develop and bring new products to market in a timely manner, or achieve market acceptance of our products, our business and operating results will be harmed.

If we are not successful in executing our strategy to increase sales of our products to larger enterprise end-customers, our operating results may suffer.

Our growth strategy is dependent, in part, upon increasing sales of our products to larger enterprises. Sales to these types of end-customers involve risks that may not be present or that are present to a lesser extent with sales to smaller entities. These risks include:

competition from larger competitors that traditionally target larger enterprises that may have pre-existing relationships or purchase commitments from those end-customers;

successfully introducing and supporting fibre channel products, as many large enterprises often require products that support this technology;

increased purchasing power and leverage held by large end-customers in negotiating contractual arrangements;

more stringent support requirements; and

longer sales cycles and the associated risk that substantial time and resources may be spent on potential end-customers that elect not to purchase our products.

Our future growth plan depends in part on expanding outside of the United States, and we are therefore subject to a number of risks associated with international sales and operations.

As part of our growth plan, we intend to expand our operations globally. We have a limited history of marketing, selling and supporting our products and services internationally. International sales and operations are subject to a number of risks, including the following:

greater difficulty in enforcing contracts and accounts receivable collection and longer collection periods;

increased expenses incurred in establishing and maintaining office space and equipment for our international operations;

fluctuations in exchange rates between the U.S. dollar and foreign currencies in markets where we do business;

management communication and integration problems resulting from cultural and geographic dispersion;

difficulties in attracting and retaining personnel with experience in international operations;

risks associated with trade restrictions and foreign legal requirements, including the importation, certification and localization of our products required in foreign countries;

greater risk of unexpected changes in regulatory practices, tariffs, and tax laws and treaties;

the uncertainty of protection for intellectual property rights in some countries;

greater risk of a failure of foreign employees to comply with both U.S. and foreign laws, including antitrust regulations, the U.S. Foreign Corrupt Practices Act and any trade regulations ensuring fair trade practices; and

general economic and political conditions in these foreign markets.

These factors and other factors could harm our ability to gain future international revenue and, consequently, materially impact our business and operating results. The expansion of our existing international operations and entry into additional international markets will require significant management attention and financial resources. Our failure to successfully manage our international operations and the associated risks effectively could limit the future growth of our business.

Large enterprises often undertake a significant evaluation process that results in a lengthy sales cycle. Although we have a channel sales model, our sales representatives may invest substantial time and resources in engaging with sales to larger end-customers. We may spend this time and resources without being successful in generating any sales. In addition, product purchases by large enterprises are frequently subject to budget constraints, multiple approvals, and unplanned administrative, processing and other delays. Finally, large enterprises typically have longer implementation cycles, require greater product functionality and scalability (including, for example, fibre channel products) and a broader range of services, demand that vendors take on a larger share of risks, sometimes require acceptance provisions that can potentially lead to a delay in revenue recognition, and expect greater payment flexibility from vendors. All of these factors can add risk to business conducted with these end-customers. If we fail to realize an expected sale from a large end-customer in a particular quarter or at all, our business, operating results and financial condition could be adversely affected.

Failure to adequately expand our sales force will impede our growth.

We will need to continue to expand and optimize our sales infrastructure in order to grow our customer base and our business. In particular, our ability to increase our business with both large enterprises as well as international customers will require qualified personnel with experience selling into these types of customers. We plan to continue to expand our sales force globally. Identifying, recruiting and training qualified personnel require significant time, expense and attention. It can take time before our sales representatives are fully-trained and productive. Moreover, strategies that may be successful in one region may not be relevant for another region. Our business may be adversely affected if our efforts to expand and train our sales force do not generate a corresponding increase in revenue. In particular, if we are unable to hire, develop and retain talented sales personnel globally or if new sales personnel are unable to achieve desired productivity levels in a reasonable period of time, we may not be able to realize the expected benefits of this investment or increase our revenue.

We are in the process of evolving our distribution model, which may harm our future operating results.

We are in the process of evolving our global distribution model from contracting directly with hundreds of individual VARs to contracting with fewer larger global distributors. This transition is largely complete in the US. Although we believe that this transition continues to make our sales channels more efficient and broader reaching, there is no guarantee that this new distribution model will increase our sales in the short term or allow us to sustain our gross margins. Any potential delays or confusion

during the transition process with our new partners may negatively affect our relationship with our existing end-customers and channel partners. Our failure to successfully implement this new distribution model globally could adversely affect our operating results.

Our sales cycle is unpredictable, which makes it difficult to predict our results even in the near term.

A substantial portion of our quarterly sales typically occurs during the last month of the quarter, which we believe largely reflects sales cycles of storage products and other products in the technology industry generally. We have little visibility at the start of any quarter as to which existing end-customers, if any, will make additional purchases and when any additional purchases may occur, if at all.

Currently, our average sales cycle is approximately three months. However, potential end-customers may undertake a longer evaluation process that has, in the past, resulted in a longer sales cycle. In addition, our sales cycle may be extended if potential end-customers decide to re-evaluate other aspects of their storage infrastructure at the same time they are considering a purchase of our products. As a result, our quarterly operating results are difficult to predict even in the near term.

Our growth depends in part on the success of our strategic relationships with third parties.

Our future growth will depend on our ability to enter into successful strategic relationships with third parties. For example, our SmartStack initiative involves working with third parties, including Cisco, Citrix, Microsoft, Oracle and VMware to create a broader integrated technology solution to address our end-customers’ needs. In addition, we work with global distributors to streamline and grow our sales channel. These relationships may not result in additional customers or enable us to generate significant revenue. These relationships are typically non-exclusive and do not prohibit the other party from working with our competitors or from offering competing services. If we are unsuccessful in establishing or maintaining our relationships with these third parties, our ability to compete in the marketplace or to grow our revenue could be impaired and our operating results could suffer.

Interruptions to and failures of our IT infrastructure could disrupt our operations and services.

We depend on our IT infrastructure, which includes our data centers and networks, to operate our business and to provide services to our end-customers through our InfoSight platform. This infrastructure, including our back-up systems, resides in two locations. Currently we do not have a disaster recovery policy, but we are in the process of implementing such a policy in the upcoming quarters. Any interruptions to or failures of our IT infrastructure, whether due to natural disasters, system failures, computer viruses, security breaches, computer hacking attacks or other causes, whether through third party action or employee error or malfeasance, would affect our ability to operate our business and provide services through our InfoSight platform. As a result, we could face liability with respect to any diminished performance of our InfoSight platform or support services generally during the periods when our IT infrastructure is compromised and any subsequent periods required to repair such interruptions or failures. Moreover, we would likely suffer reputational damage, and our ability to sell our solutions to existing and prospective customers could be harmed.

The inability of our products to interoperate with leading business software applications, hypervisors and data management tools would cause our business to suffer.

Our products are also designed to interoperate with virtualization solutions in the market. Virtual environment solutions require a fast and flexible network storage foundation. If our products are not compatible with leading business software applications, hypervisors and data management tools, demand for our products will decline. We must devote significant resources to enhancing our products to continue to interoperate with these software applications, hypervisors and data management tools. Any current or future providers of software applications, hypervisors or data management tools could make future changes that would diminish the ability of our products to interoperate with them, and we

might need to spend significant additional time and effort to ensure the continued compatibility of our products, which might not be possible at all. Any of these developments could harm our business.

If our products do not interoperate with our end-customers’ infrastructure, sales of our products could be negatively affected, which would harm our business.

Our products must interoperate with our end-customers’ existing infrastructure, which often have different specifications, utilize multiple protocol standards, deploy products from multiple vendors, and contain multiple generations of products that have been added over time. As a result, when problems occur in a network, it may be difficult to identify the sources of these problems. If we find errors in the existing software or defects in the hardware used in our end-customers’ infrastructure or problematic network configurations or settings, we may have to modify our software or hardware so that our products will interoperate with our end-customers’ infrastructure. In such cases, our products may be unable to provide significant performance improvements for applications deployed in our end-customers’ infrastructure. In addition, government and other end-customers may require our products to comply with certain security or other certifications and standards. If our products are late in achieving or fail to achieve compliance with these certifications and standards, or our competitors achieve compliance with these certifications and standards, we may be disqualified from, or disadvantaged in, selling our products to such end-customers, which could harm our business and operating results.

If our industry experiences extraordinary declines in average sales prices, our revenue and gross profit may also decline.

The data storage products industry is highly competitive and has historically been characterized by declines in average sales prices. It is possible that the market for our storage products could experience similar trends in equal or greater degree than the rest of the industry. Our average sales prices could decline due to pricing pressure caused by several factors, including competition, the introduction of competing technologies, overcapacity in the worldwide supply of flash memory or disk drive components, increased manufacturing efficiencies, implementation of new manufacturing processes and expansion of manufacturing capacity by component suppliers. If we are required to decrease our prices to be competitive and are not able to offset this decrease by increases in the volume of sales or the sales of new products with higher margins, our gross margins and operating results could be adversely affected.

Governmental regulations affecting the export of certain of our solutions could negatively affect our business.

Our products, technology and software are subject to U.S. export controls and economic sanctions, and we incorporate encryption technology into certain of our products. These encryption products and the underlying technology may be exported outside the United States only with the required export authorizations, including by license, a license exception or other appropriate government authorizations, including the filing of an encryption registration. Furthermore, U.S. export control laws and economic sanctions prohibit the shipment of certain products to U.S. embargoed or sanctioned countries, governments and persons and for certain end-uses. Governmental regulation of encryption technology and regulation of imports or exports, or our failure, or inability due to governmental action or inaction, to obtain required import or export approval for our products could harm our international sales and adversely affect our revenue. Obtaining the necessary export license or other authorization for a particular sale may be time-consuming and may result in the delay or loss of sales opportunities even if the export license ultimately may be granted. Even though we take precautions to ensure that our channel partners comply with all relevant regulations, any failure by our channel partners to comply with such regulations could have negative consequences, including reputational harm, government investigations and penalties.

We have in the past had to make a voluntary disclosure to the Office of Export Enforcement, or OEE, of the U.S. Commerce Department to report a failure to obtain an encryption registration number prior to shipment of a particular hardware appliance product to a limited number of international customers. Failure to comply with export regulations and these recent voluntary submissions could result in penalties, costs, and restrictions on export privileges, which could also harm our operating results, as well as our inability to service certain products already in the hands of our end-customers, which could have negative consequences, including reputational harm. BIS has granted the service authorization and closed the enforcement matter by issuing us a warning letter, rather than assessing a civil penalty.

A portion of our revenue is generated by sales to government entities, which are subject to a number of challenges and risks.

We may in the future increase sales to government entities. Selling to government entities can be highly competitive, expensive and time consuming, often requiring significant upfront time and expense without any assurance that these efforts will result in a sale. Government certification requirements for products like ours may change and in doing so restrict our ability to sell into certain government sectors until we have attained the revised certification. Government demand and payment for our products and services may be impacted by public sector budgetary cycles and funding authorizations, with funding reductions or delays adversely affecting public sector demand for our products and services. Government entities may have statutory, contractual or other legal rights to terminate contracts with our channel partners for convenience or due to a default, and any such termination may adversely impact our future operating results. Government entities may require contract terms that differ from standard arrangements and may impose compliance requirements that are complicated, require preferential pricing or “most favored nation” terms and conditions, or are otherwise time consuming and expensive to satisfy. Government entities routinely investigate and audit government contractors’ administrative processes, and any unfavorable audit could result in the government entity refusing to continue buying our products and services, a reduction of revenue, fines or civil or criminal liability if the audit uncovers improper or illegal activities, which could adversely impact our operating results.

We may be subject to claims that our employees have wrongfully disclosed or we have wrongfully used proprietary information of our employees’ former employers. These claims may be costly to defend and if we do not successfully do so, our business could be harmed.

Many of our employees were previously employed at current or potential competitors. We may be subject to claims that these employees have divulged or we have used proprietary information of these employees’ former employers. For example, on October 29, 2013 and again on May 16, 2014, NetApp, Inc. filed lawsuits against us alleging that we and certain of our employees violated NetApp’s proprietary rights, as more fully described in the section titled “Legal Proceedings.” Although we have settled the NetApp lawsuits as of March 16, 2015, litigation may be necessary to defend against other similar future claims. If we fail in defending such claims, in addition to paying monetary damages, we may lose valuable intellectual property rights or personnel. A loss of key research personnel or their work product could hamper our ability to develop new products and features for existing products, which could severely harm our business. Even if we are successful in defending against these and future claims, litigation could result in substantial costs and be a distraction to management.

Our proprietary rights may be difficult to enforce or protect, which could enable others to copy or use aspects of our products without compensating us.

We rely and expect to continue to rely on a combination of confidentiality agreements, as well as trademark, copyright, patent and trade secret protection laws, to protect our proprietary rights with our employees, consultants and third parties with whom we have relationships. We have filed various applications for certain aspects of our intellectual property. Valid patents may not issue from our pending applications, and the claims eventually allowed on any patents may not be sufficiently broad to

protect our technology or products. Any issued patents may be challenged, invalidated or circumvented, and any rights granted under these patents may not actually provide adequate defensive protection or competitive advantages to us. Additionally, the process of obtaining patent protection is expensive and time-consuming, and we may not be able to prosecute all necessary or desirable patent applications at a reasonable cost or in a timely manner.

Despite our efforts to protect our proprietary rights, unauthorized parties may attempt to copy aspects of our products or obtain and use information that we regard as proprietary. We generally enter into confidentiality or license agreements with our employees, consultants, vendors and customers, and generally limit access to and distribution of our proprietary information. However, we cannot assure you that the agreements we have entered into will not be breached. In addition, the laws of some foreign countries do not protect our proprietary rights to as great an extent as the laws of the United States, and many foreign countries do not enforce these laws as diligently as government agencies and private parties in the United States.

From time to time, we may need to take legal action to enforce our patents and other intellectual property rights, to protect our trade secrets, to determine the validity and scope of the proprietary rights of others or to defend against claims of infringement or invalidity. Such litigation could result in substantial costs and diversion of resources and could negatively affect our business and operating results. Attempts to enforce our rights against third parties could also provoke these third parties to assert their own intellectual property or other rights against us, or result in a holding that invalidates or narrows the scope of our rights, in whole or in part. Any of these events would have a material adverse effect on our business and operating results.

Claims by others that we infringe their proprietary technology or other rights could harm our business.

Companies in the storage industry own large numbers of patents, copyrights, trademarks, domain names and trade secrets, and frequently enter into litigation based on allegations of infringement, misappropriation or other violations of intellectual property or other rights. Third parties have asserted and may in the future assert claims of infringement of intellectual property rights against us or our end-customers and channel partners. For example, in October 2013, we received a letter on behalf of Crossroads Systems suggesting that we should license some or all of its patents from its ‘972 Patent Family to avoid infringement of those patents. Our standard license and other agreements obligate us to indemnify our end-customers and channel partners against claims that our products infringe the intellectual property rights of third parties, and in some cases this indemnification obligation is uncapped as to the amount of the liability. As the number of products and competitors in our market increases and overlaps occur, and our profile within this market grows, infringement claims may increase. While we intend to increase the size of our patent portfolio, our competitors and others may now and in the future have significantly larger and more mature patent portfolios than we have. In addition, future litigation may involve patent holding companies or other adverse patent owners who have no relevant product revenue and against whom our own patents may therefore provide little or no deterrence or protection. Any claim of infringement by a third party, even those without merit, could cause us to incur substantial costs defending against the claim and could distract our management from our business. Furthermore, a successful claimant could secure a judgment or we may agree to a settlement that requires us to pay substantial damages, royalties or other fees. Any of these events could harm our business and operating results.

Although third parties may offer a license to their technology or other intellectual property, the terms of any offered license may not be acceptable and the failure to obtain a license or the costs associated with any license could materially and adversely affect our business and operating results. If a third party does not offer us a license to its technology or other intellectual property on reasonable terms, or at all, we could be enjoined from continued use of such intellectual property. As a result, we may be required to develop alternative, non-infringing technology, which could require significant time

(during which we would be unable to continue to offer our affected products or services), effort and expense, and may ultimately not be successful.

If we are unable to hire, retain, train and motivate qualified personnel and senior management, our business could be harmed.

Our future success depends, in part, on our ability to continue to attract and retain highly skilled personnel. In particular, we are highly dependent on the contributions of our executive team as well as members of our research and development organization. The loss of any key personnel could make it more difficult to manage our operations and research and development activities, reduce our employee retention and revenue and impair our ability to compete. Although we have entered into employment offer letters with our key personnel, these agreements have no specific duration and constitute at-will employment.

Competition for highly skilled personnel is often intense, especially in the San Francisco Bay Area where we have a substantial presence and need for highly skilled personnel. We may not be successful in attracting, integrating or retaining qualified personnel to fulfill our current or future needs. We have from time to time experienced, and we expect to continue to experience, difficulty in hiring and retaining highly skilled employees with appropriate qualifications. In addition, job candidates and existing employees often consider the value of the equity awards they receive in connection with their employment. If the perceived value of our stock declines, it may adversely affect our ability to retain highly skilled employees. In addition, since we expense all stock-based compensation, we may periodically change our equity compensation practices, which may include reducing the number of employees eligible for options or reducing the size of equity awards granted per employee. If we fail to attract new personnel or fail to retain and motivate our current personnel, our business and future growth prospects could be harmed.

If we or our channel partners fail to timely and correctly install our storage products, or if our channel partners face disruptions in their business, our reputation will suffer, our competitive position could be impaired and we could lose end-customers.

In addition to our small team of installation personnel, we rely upon some of our channel partners to install our storage products at our end-customer locations. Although we train and certify our channel partners on the installation of our products, end-customers have in the past encountered installation difficulties with our channel partners. In addition, if one or more of our channel partners suffers an interruption in its business, or experiences delays, disruptions or quality control problems in its operations, our revenue could be reduced and our ability to compete could be impaired. As a significant portion of our sales occur in the last month of a quarter, our end-customers may also experience installation delays following a purchase if we or our channel partners have too many installations in a short period of time. If we or our channel partners fail to timely and correctly install our products, end-customers may not purchase additional products and services from us, our reputation could suffer and our revenue could be reduced. In addition, if our channel partners are unable to correctly install our products, we might incur additional expenses to correctly install our products.

We are exposed to the credit risk of some of our channel partners and direct customers, which could result in material losses and negatively impact our operating results.

Some of our channel partners and direct customers have experienced financial difficulties in the past. A channel partner or direct customer experiencing such difficulties will generally not purchase or sell as many of our products as it would under normal circumstances and may cancel orders. Our typical payment terms are 30 days. Because of local customs or conditions, payment terms may be longer in some circumstances and markets. In addition, a channel partner or direct customer experiencing financial difficulties generally increases our exposure to uncollectible receivables. If any of our channel partners or direct customers that represent a significant portion of our total revenue

becomes insolvent or suffers a deterioration in its financial or business condition and is unable to pay for our products, our results of operations could be harmed.

Changes in laws, regulations and standards related to data privacy and the Internet could harm our business.

Federal, state or foreign government bodies or agencies have in the past adopted, and could in the future adopt, laws and regulations affecting data privacy and the use of the Internet as a commercial medium. Changing laws, regulations and standards applying to the solicitation, collection, processing or use of personal or consumer information could affect our end-customers’ ability to use and share data, potentially restricting our ability to store, process and share data with our end-customers through our InfoSight platform, and in turn limit our ability to provide real-time and predictive customer support. If we are not able to adjust to changing laws, regulations and standards related to the Internet, our business could be harmed.

Some of our products use “open source” software, which may restrict how we use or distribute our products or require that we release the source code of certain software subject to open source licenses.

Some of our products may incorporate software licensed under so-called “free,” “open source” or other similar licenses where the licensed software is made available to the general public under the terms of a specific non-negotiable license. Some open source licenses require that software subject to the license be made available to the public and that any modifications or derivative works based on open source software be licensed in source code form under the same open source licenses. Few courts have interpreted open source licenses, and the manner in which these licenses may be interpreted and enforced is therefore subject to some uncertainty. We rely on multiple software programmers to design our proprietary technologies, we are not able to exercise complete control over the development methods and efforts of our programmers, and we cannot be certain that our programmers have not incorporated open source software into our products without our knowledge or that they will not do so in the future. Some of our products incorporate third-party software under commercial licenses. We cannot be certain whether such third-party software incorporates open-source software without our knowledge. In the event that portions of our proprietary technology are determined to be subject to an open source license, we could be required to publicly release the affected portions of our source code, re-engineer all or a portion of our products, or otherwise be limited in the licensing of our technologies, each of which could reduce or eliminate the value of our products and materially and adversely affect our ability to sustain and grow our business. Many open source licenses include additional obligations and restrictions, such as providing attribution to the authors of the open source software or providing a copy of the applicable open source license to recipients of the open source software. If we distribute products outside the terms of applicable open source licenses, we could be exposed to claims of breach of contract or intellectual property infringement.

Our failure to raise additional capital or generate the significant capital necessary to expand our operations and invest in new products could reduce our ability to compete and could harm our business.

We expect that our existing cash and cash equivalents will be sufficient to meet our anticipated cash needs for at least the next 12 months, we may need to raise additional funds, and we may not be able to obtain additional debt or equity financing on favorable terms, if at all. If we raise additional equity financing, our stockholders may experience significant dilution of their ownership interests and the per share value of our common stock could decline. Furthermore, if we engage in debt financing, the holders of debt would have priority over the holders of common stock, and we may be required to accept terms that restrict our ability to incur additional indebtedness. We may also be required to take other actions that would otherwise be in the interests of the debt holders and force us to maintain

specified liquidity or other ratios, any of which could harm our business and operating results. If we need additional capital and cannot raise it on acceptable terms, we might not be able to, among other things:

develop or enhance our products;

continue to expand our sales and marketing and research and development organizations;

acquire complementary technologies, products or businesses;

expand operations in the United States or internationally;

hire, train and retain employees; or

respond to competitive pressures or unanticipated working capital requirements.

Our failure to do any of these things could harm our business and operating results.

If we fail to maintain an effective system of internal controls, our ability to produce timely and accurate financial statements or comply with applicable regulations could be impaired.

As a public company, we are subject to the reporting requirements of the Securities Exchange Act of 1934, as amended, or Exchange Act, the Sarbanes-Oxley Act and the rules and regulations of the New York Stock Exchange. We expect the requirements of these rules and regulations will increase our legal, accounting, financial compliance and audit costs, make some activities more challenging, time consuming and costly, and place strain on our personnel, systems and resources.

The Sarbanes-Oxley Act requires, among other things, that we maintain effective disclosure controls and procedures and internal control over financial reporting as defined in Rule 13a-15(f) of the Exchange Act. We are continuing to enhance and refine our disclosure controls and other procedures designed to ensure information required to be disclosed in the reports filed with the U.S. Securities and Exchange Commission, or the SEC, is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and that information required to be disclosed in reports under the Exchange Act is accumulated and communicated to our principal executive and financial officers.

Our current controls, and any new controls developed, may become inadequate because of changes in external conditions and in our business. Any failure to update, implement and maintain effective internal controls could adversely affect the results of periodic management evaluations and annual independent registered public accounting firm attestation reports regarding the effectiveness of our internal control over financial reporting required in periodic reports filed with the SEC under Section 404 of the Sarbanes-Oxley Act. Further, weaknesses in our internal controls may be discovered in the future and result in a restatement of our financial statements for prior periods. Any failure to develop or maintain effective controls, or any difficulties encountered in their implementation or improvement, could harm our operating results, or cause us to fail to meet our reporting obligations.

Ineffective disclosure controls and procedures and ineffective internal control over financial reporting could cause investors to lose confidence in our reported financial and other information, which would likely have a negative effect on the trading price of our common stock.

To maintain and improve the effectiveness of our disclosure controls and procedures and internal control over financial reporting, we have expended and will continue to expend significant resources, including accounting and professional services fees related costs and in providing diligent management oversight. Any failure to maintain the adequacy of our internal controls, or consequent inability to produce accurate financial statements on a timely basis, could increase our operating costs and could impair our ability to operate our business. In the event that our internal controls are assessed or perceived as inadequate, or we are unable to produce timely and accurate financial statements, investors may lose confidence in our operating results and our stock price could decline. In addition, if we are unable to

continue to meet these requirements, we may not be able to remain listed on the New York Stock Exchange.

We will be required to disclose changes made in our internal controls and procedures on a quarterly basis and, in compliance with Section 404 of the Sarbanes-Oxley Act, file an internal control report with our annual report acknowledging the obligation of management to establish and maintain adequate internal controls and procedures for financial reporting.

We have performed system and process evaluation and testing of our internal control over financial reporting to allow management to report on the effectiveness of our internal control over financial reporting, as required by Section 404 of the Sarbanes-Oxley Act. To comply with the full requirements of a public company, we will need to undertake various actions, such as implementing new internal controls and procedures and hiring accounting and/or internal audit staff. Commencing with the audit of our fiscal year when we must comply with the attestation requirements of Section 404(b) of the Sarbanes-Oxley Act, our independent registered public accounting firm will be required to formally attest to the effectiveness of our internal control over financial reporting. At such time, our independent registered public accounting firm may issue a report that it is not satisfied with the level at which our controls are designed or operating or may assess certain controls as ineffective, and our remediation efforts may not enable us to avoid a material weakness in the future.

If we fail to comply with environmental requirements, our business, operating results and reputation could be adversely affected.

We are subject to various environmental laws and regulations including laws governing the hazardous material content of our products and laws relating to the collection of and recycling of electrical and electronic equipment. Examples of these laws and regulations include the European Union, or EU, Restrictions of Hazardous Substances Directive, or RoHS, and the EU Waste Electrical and Electronic Equipment Directive, or WEEE, as well as the implementing legislation of the EU member states. Similar laws and regulations have been passed or are pending in China, South Korea, Norway and Japan and may be enacted in other regions, including in the United States, and we are, or may in the future be, subject to these laws and regulations.

The EU RoHS and the similar laws of other jurisdictions ban the use of certain hazardous materials such as lead, mercury and cadmium in the manufacture of electrical equipment, including our products. Currently, the manufacturer of our hardware appliances and our major component part suppliers comply with the EU RoHS requirements. However, if there are changes to this or other laws (or their interpretation) or if new similar laws are passed in other jurisdictions, we may be required to reengineer our products to use components compatible with these regulations. This reengineering and component substitution could result in additional costs to us or disrupt our operations or logistics.

The WEEE Directive requires electronic goods producers to be responsible for the collection, recycling and treatment of such products. Changes in interpretation of the directive may cause us to incur costs or have additional regulatory requirements to meet in the future in order to comply with this directive, or with any similar laws adopted in other jurisdictions.

Our failure to comply with past, present and future similar laws could result in reduced sales of our products, substantial product inventory write-offs, reputational damage, penalties and other sanctions, any of which could harm our business and operating results. We also expect that our products will be affected by new environmental laws and regulations on an ongoing basis. To date, our expenditures for environmental compliance have not had a material impact on our results of operations or cash flows, and although we cannot predict the future impact of such laws or regulations, they will likely result in additional costs and may increase penalties associated with violations or require us to change the content of our products or how they are manufactured, which could have a material adverse effect on our business and operating results.

We are exposed to fluctuations in currency exchange rates, which could negatively affect our operating results.

Our sales contracts are primarily denominated in U.S. dollars, and therefore, substantially all of our revenue is not subject to foreign currency risk. However, a strengthening of the U.S. dollar could increase the real cost of our products to our end-customers outside of the United States, which could adversely affect our operating results. In addition, an increasing portion of our operating expenses is incurred and an increasing portion of our assets is held outside the United States. These operating expenses and assets are denominated in foreign currencies and are subject to fluctuations due to changes in foreign currency exchange rates. If we are not able to successfully hedge against the risks associated with currency fluctuations, our operating results could be adversely affected.

Our business is subject to the risks of earthquakes, fire, power outages, floods, and other catastrophic events, and to interruption by man-made problems such as terrorism.

A significant natural disaster, such as an earthquake, fire, flood, or significant power outage could have a material adverse impact on our business, operating results. Both our corporate headquarters and the location where our products are manufactured are located in the San Francisco Bay Area, a region known for seismic activity. In addition, natural disasters could affect our supply chain, manufacturing vendors, or logistics providers’ ability to provide materials and perform services such as manufacturing products or assisting with shipments on a timely basis. In the event we or our service providers are hindered by any of the events discussed above, shipments could be delayed, resulting in missed financial targets, such as revenue and shipment targets, for a particular quarter. In addition, acts of terrorism and other geo-political unrest could cause disruptions in our business or the businesses of our supply chain, manufacturers, logistics providers, partners or end-customers, or the economy as a whole. Any disruption in the business of our supply chain, manufacturers, logistics providers, partners or end-customers that impacts sales at the end of a fiscal quarter could have a significant adverse impact on our quarterly results. All of the aforementioned risks may be further increased if we do not implement a disaster recovery plan or our suppliers’ disaster recovery plans prove to be inadequate. To the extent that any of the above should result in delays or cancellations of customer orders, or delays in the manufacture, deployment or shipment of our products, our business and operating results would be adversely affected.

New regulations related to conflict minerals may cause us to incur additional expenses and could limit the supply and increase the costs of certain metals used in the manufacturing of our products.

As a public company, we will be subject to new requirements under the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 that will require us to diligence, disclose and report whether or not our products contain conflict minerals. The implementation of these new requirements could adversely affect the sourcing, availability and pricing of the materials used in the manufacture of components used in our products. In addition, we will incur additional costs to comply with the disclosure requirements, including costs related to conducting diligence procedures to determine the sources of conflict minerals that may be used or necessary to the production of our products and, if applicable, potential changes to products, processes or sources of supply as a consequence of such verification activities. It is also possible that we may face reputational harm if we determine that certain of our products contain minerals not determined to be conflict free or if we are unable to alter our products, processes or sources of supply to avoid such materials. Under the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, we are required to assess if our products contain minerals that are not determined to be conflict free in the first calendar year following the first eight months after our initial public offering date. Our first calendar year which requires this assessment begins January 1, 2015. After our assessment has been completed, any public filings of our assessment must be made by May 31, 2016.

Our ability to use net operating losses to offset future taxable income may be subject to certain limitations.

As of January 31, 2015, we had federal and state net operating loss carryforwards of $170.8 million and $90.5 million due to prior period losses, which if not utilized, will begin to expire in 2035. If these net operating losses, or NOLs, expire unused and are unavailable to offset future income tax liabilities, our profitability may be adversely affected. In addition, under Section 382 of the U.S. Internal Revenue Code of 1986, or the Code, a corporation that undergoes an “ownership change” is subject to limitations on its ability to utilize its pre-change NOLs to offset future taxable income. Our existing NOLs may be subject to limitations arising from previous ownership changes and, if we undergo an ownership change in the future, our ability to utilize our NOLs could be further limited by Section 382 of the Code. Future changes in our stock ownership, many of which are outside of our control, could result in an ownership change under Section 382 of the Code. In September 2013, we completed an analysis to evaluate whether there are any limitations of our NOLs and concluded no limitations currently exist. While we do not believe that we have experienced an ownership change that would result in limitations, regulatory changes, such as suspension of the use of NOLs, could result in the expiration of our NOLs or otherwise cause them to be unavailable to offset future income tax liabilities. Our net operating losses could also be impaired under state law. As a result, we might not be able to utilize a material portion of our NOLs.

We may acquire other businesses which could require significant management attention, disrupt our business, dilute stockholder value and adversely affect our operating results.

As part of our business strategy, we may make investments in complementary companies, products or technologies. However, we have not made any acquisitions to date, and as a result, our ability as an organization to acquire and integrate other companies, products or technologies in a successful manner is unproven. We may not be able to find suitable acquisition candidates, or we may not be able to complete such acquisitions on favorable terms, if at all. If we do complete acquisitions, we may not ultimately strengthen our competitive position or achieve our goals, and any acquisitions we complete could be viewed negatively by our end-customers, investors or securities analysts. In addition, if we are unsuccessful at integrating such acquisitions, or the technologies associated with such acquisitions, into our company, our operating results could be adversely affected. We may also incur unforeseen liabilities which could materially and adversely affect our operating results. We may not successfully evaluate or utilize the acquired technology or personnel, or accurately forecast the financial impact of an acquisition transaction, including accounting charges. The sale of equity or issuance of debt to finance any such acquisitions could result in dilution to our stockholders. The incurrence of indebtedness would result in increased fixed obligations and could also include covenants or other restrictions that impede our ability to manage our operations.

We are an “emerging growth company” and we cannot be certain if the reduced disclosure requirements applicable to emerging growth companies will make our common stock less attractive to investors.

We are an “emerging growth company,” as defined in the Jumpstart Our Business Startups Act of 2012, or the JOBS Act, and we intend to take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies including, but not limited to, not being required to comply with the auditor attestation requirements of Section 404 of the Sarbanes-Oxley Act, reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statements and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and shareholder approval of any golden parachute payments not previously approved.

We could be an “emerging growth company” for up to five years following our initial public offering, although we may lose such status earlier, depending on the occurrence of certain events. We

will remain an “emerging growth company” until the earliest to occur of (i) the last day of the fiscal year (a) following December 12, 2018 or (b) in which we have gross annual revenue of at least $1.0 billion, (ii) the date on which we are deemed to be a “large accelerated filer” under the Exchange Act, which means that the market value of our common stock held by non-affiliates exceeds $700 million as of the prior July 31 and (iii) the date on which we have issued more than $1.0 billion in non-convertible debt securities during the prior three-year period. We expect to lose emerging growth company status as of January 31, 2016.

We cannot predict if investors will find our common stock less attractive because we will rely on these exemptions. If some investors find our common stock less attractive as a result, there may be a less active trading market for our common stock and our stock price may be more volatile.

Under the JOBS Act, “emerging growth companies” can delay adopting new or revised accounting standards issued subsequent to the enactment of the JOBS Act until such time as those standards apply to private companies. We have irrevocably elected not to avail ourselves of this exemption from new or revised accounting standards and will be subject to the same new or revised accounting standards as other public companies that are not “emerging growth companies.”

Risks Related to Our Business and Our Industry

The price of our common stock has been, and is likely to continue to be, volatile and may decline regardless of our operating performance, and you may not be able to resell your shares at or above the price at which you purchased your shares.

The trading price of our common stock has been volatile, and could be subject to wide fluctuations in response to various factors, many of which are beyond our control, including:

•

overall performance of the equity markets;

•

our operating performance and the performance of other similar companies;

•

changes in the estimates of our operating results that we provide to the public, our failure to meet these projections or changes in recommendations by securities analysts that elect to follow our common stock;

•

announcements of technological innovations, new applications or enhancements to services, acquisitions, strategic alliances or significant agreements by us or by our competitors;

•

announcements of customer additions and customer cancellations or delays in customer purchases;

•

recruitment or departure of key personnel;

•

the economy as a whole, market conditions in our industry, and the industries of our customers;

•

the size of our market float; and

•

any other factors discussed in this report.

In addition, the stock markets have experienced extreme price and volume fluctuations that have affected and continue to affect the market prices of equity securities of many technology companies. Stock prices of many technology companies have fluctuated in a manner unrelated or disproportionate to the operating performance of those companies. In the past, stockholders have filed securities class action litigation following periods of market volatility. If we were to become involved in securities litigation, it could subject us to substantial costs, divert resources and the attention of management from our business, and adversely affect our business.

If securities or industry analysts choose to publish or refrain from publishing research, publish inaccurate or unfavorable research, or discontinue publishing research, about our business, our stock price and trading volume could decline.

The trading market for our common stock will depend in part on the research and reports that securities or industry analysts publish about us or our business. If industry analysts cease coverage of us or fail to publish reports on us regularly, demand for our common stock could decrease, which might cause our common stock price and trading volume to decline. If one or more of the analysts who cover us downgrade our common stock or publish inaccurate or unfavorable research about our business, our common stock price could decline.

Our directors, executive officers and principal stockholders have substantial control over us and could delay or prevent a change in corporate control.

Our directors and executive officers, together with their affiliates, beneficially own, in the aggregate, 38% of our outstanding common stock as of March 25, 2015. As a result, these stockholders, acting together, have the ability to control the outcome of matters submitted to our stockholders for approval, including the election of directors and any merger, consolidation or sale of all or substantially all of our assets. In addition, these stockholders, acting together, have the ability to control the management and affairs of our company. Accordingly, this concentration of ownership could harm the market price of our common stock by:

delaying, deferring or preventing a change in control of us;

impeding a merger, consolidation, takeover or other business combination involving us; or

discouraging a potential acquiror from making a tender offer or otherwise attempting to obtain control of us.

We do not intend to pay dividends for the foreseeable future.

We have never declared nor paid cash dividends on our capital stock. We currently intend to retain any future earnings to finance the operation and expansion of our business, and we do not expect to declare or pay any dividends in the foreseeable future. Consequently, stockholders must rely on sales of their common stock after price appreciation, which may never occur, as the only way to realize any future gains on their investment.

Delaware law and provisions in our restated certificate of incorporation and restated bylaws could make a merger, tender offer, or proxy contest difficult, thereby depressing the trading price of our common stock.

Our status as a Delaware corporation and the anti-takeover provisions of the Delaware General Corporation Law may discourage, delay, or prevent a change in control by prohibiting us from engaging in a business combination with an interested stockholder for a period of three years after the person becomes an interested stockholder, even if a change of control would be beneficial to our existing stockholders. In addition, our restated certificate of incorporation and restated bylaws contain provisions that may make the acquisition of our company more difficult, including the following:

our board of directors is classified into three classes of directors with staggered three-year terms and directors will only be able to be removed from office for cause;

only our board of directors has the right to fill a vacancy created by the expansion of our board of directors or the resignation, death or removal of a director, which prevents stockholders from being able to fill vacancies on our board of directors;

only our chairman of the board, our chief executive officer, our president or a majority of our board of directors are authorized to call a special meeting of stockholders;

certain litigation against us can only be brought in Delaware;

our restated certificate of incorporation will authorizes undesignated preferred stock, the terms of which may be established, and shares of which may be issued, without the approval of the holders of common stock; and

advance notice procedures apply for stockholders to nominate candidates for election as directors or to bring matters before an annual meeting of stockholders.

ITEM 1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 2. PROPERTIES

Our corporate headquarters are located in approximately 165,000 square feet in San Jose, California. The 96-month lease commenced on November 1, 2013. We use this facility for administration, sales and marketing, research and development, customer support, and professional services. We also maintain offices in other locations in the United States, including approximately 87,000 square feet in Durham, North Carolina, and internationally, including the United Kingdom, Australia, and other various locations; we use these office spaces primarily for sales and marketing. We believe our existing facilities are adequate to meet our current needs, and we intend to procure additional space as needed as we add employees and expand our operations. We believe that, if required, suitable additional or substitute space would be available to accommodate any such expansion of our operations.

ITEM 3. LEGAL PROCEEDINGS

On October 29, 2013, NetApp, Inc. (NetApp) filed a lawsuit in United States District Court, Northern District of California, alleging violations of the federal Computer Fraud and Abuse Act (“CFAA”), trade secret misappropriation, unfair competition and related state law claims. The Company and three individuals, a sales engineer employee of an Australian affiliate, along with a sales representative and program manager of the Company, have been named as defendants. On January 10, 2014, NetApp filed a First Amended Complaint that added similar state law claims against three additional individuals as defendants. The First Amended Complaint alleges that the Australian defendant, a former employee of a NetApp reseller, accessed NetApp’s password-protected website allegedly restricted to NetApp partners, resellers, employees and customers, and downloaded confidential and proprietary information in violation of the Computer Fraud and Abuse Act. It further alleges that the other five individual defendants, who were formerly employed at NetApp, downloaded NetApp company documents and materials, including allegedly confidential and trade secret information and/or deleted NetApp documents and materials, prior to leaving NetApp. The complaint seeks unspecified damages and injunctive relief. The Company filed a response to the complaint on February 18, 2014. On May 12, 2014, the Court dismissed Nimble and all of the individual defendants except for the Australian defendant from the lawsuit. The court allowed NetApp to file an amended complaint concerning some of its claims, and NetApp filed a Second Amended Complaint on June 2, 2014. The Second Amended Complaint contains claims of alleged violations of the Computer Fraud and Abuse Act, unfair competition and related state law claims against the Company and the employee of an Australian affiliate of the Company. On January 29, 2015, the Court dismissed all claims for monetary damages against Nimble, including all claims based on the CFAA, with prejudice. The only remaining claim against Nimble is a narrowed claim of unfair competition under California and Professions Code Section 17200, which does not provide for monetary damages. The Court also dismissed, with prejudice, a portion of the CFAA claim, the trespass to chattel claim entirely, and a portion of the unfair competition claim against the Australian defendant. Following the Court’s order, the parties participated in a settlement conference on February 9, 2015 with the Court and were ordered to return on February 19, 2015 to continue discussing possible settlement of the federal lawsuit.

On May 16, 2014, NetApp filed a lawsuit in the Superior Court of California, County of Santa Clara against the Company and the five individuals who were dismissed from the federal lawsuit, alleging claims that were similar to those dismissed from the federal lawsuit (i.e., that the individual defendants downloaded NetApp company documents and materials, including allegedly confidential and trade secret information and/or deleted NetApp documents and materials, prior to leaving NetApp). The state court complaint seeks unspecified damages and injunctive relief.

On July 30, 2014, NetApp, the Company and the individual defendants participated in mediation of both lawsuits to work towards a mutually agreeable resolution to these cases, which was unsuccessful. The parties also participated in a settlement conference under the jurisdiction of the United States District Court, Northern District of California on February 9, 2015, February 19, 2015 and March 16, 2015. The parties entered into a written settlement agreement effective March 16, 2015, the terms of which are confidential. The settlement, which is not material to the Company’s consolidated financial statements, resolved all remaining claims in the two pending litigations. Dismissals with prejudice will be entered within five days of executing the settlement agreement.

On January 23, 2015, one of the Company’s insurance carriers, Beazley Insurance Company, Inc., filed a lawsuit in the United States District Court for the Northern District of California, seeking a declaratory judgment and reimbursement against the Company, the individual defendants in the federal and state lawsuits with NetApp, and the Company’s other insurance carrier, National Union Fire Insurance Company of Pittsburg, PA. Through the lawsuit, Beazley is seeking a legal determination that it has no duty to defend or indemnify the defendants in the federal and state NetApp lawsuits, and that it is entitled to reimbursement of amounts paid under its insurance policy with the Company. The lawsuit has not yet been served and there has been no formal activity in the matter. The Company has agreed to voluntarily participate in a mediation currently scheduled for April 13, 2015 in an effort to resolve the insurance coverage dispute. A case management conference has been scheduled for May 21, 2015. No other activity has occurred in the case.

ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELIATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market Information for Common Stock

Our common stock has been listed on the New York Stock Exchange under the symbol “NMBL” since December 13, 2013, the date of our initial public offering. Prior to our initial public offering, there was no public market for our common stock.

The following table sets forth for the indicated periods the high and low closing sales prices of our common stock as reported by the New York Stock Exchange.


	High		Low
Year ended January 31, 2014
Fourth quarter (from December 13, 2013)	$	48.67	$	33.86
Year ended January 31, 2015
First quarter	$	56.23	$	24.65
Second quarter	$	30.72	$	20.55
Third quarter	$	29.58	$	22.50
Fourth quarter	$	29.41	$	22.09

The last reported sale price for our common stock on the New York Stock Exchange was $22.62 per share on March 25, 2015.

Holders of Record

As of March 25, 2015, there were 118 registered stockholders of record of our common stock. Because many of our shares of common stock are held by brokers or other institutions on behalf of stockholders, we are unable to estimate the total number of stockholders represented by the record holders.

Dividend Policy

We have never declared or paid cash dividends on our common stock. We currently intend to retain all available funds and any future earnings for use in the operation of our business and do not anticipate paying any dividends on our common stock in the foreseeable future. Any future determination to declare dividends will be made at the discretion of our board of directors and will depend on our financial condition, operating results, capital requirements, general business conditions and other factors that our board of directors may deem relevant. In addition, our credit facility contains restrictions on our ability to pay dividends.

Securities Authorized for Issuance under Equity Compensation Plans

The information concerning our equity compensation plans is incorporated by reference herein to the section of the Proxy Statement entitled “Equity Compensation Plan Information.”

Stock Performance Graph

The following shall not be deemed “soliciting material” or “filed” for purposes of Section 18 of the Exchange Act, or incorporated by reference into any of our other filings under the Exchange Act or the Securities Act of 1933, as amended, except to the extent we specifically incorporate it by reference into such filing.

This chart compares the cumulative total return on our common stock with that of the S&P 500 Index and the S&P Information Technology Index from December 13, 2013 (the date our common

stock commenced trading on the New York Stock Exchange) through January 31, 2015. The chart assumes $100 was invested at the close of market on December 13, 2013, in each of the common stock of Nimble Storage, Inc., the S&P 500 Index and the S&P Information Technology Index, and assumes the reinvestment of any dividends. The stock price performance on the following graph is not necessarily indicative of future stock price performance.

LOGO

Recent Sale of Unregistered Securities and Use of Proceeds

Sale of Unregistered Securities

None.

Use of Proceeds

On December 12, 2013, the Securities and Exchange Commission declared our registration statement on Form S-1 (File No. 333-191789) effective for our initial public offering, pursuant to which we sold an aggregate of 9,200,000 shares of our common stock at a price to the public of $21.00 per share. There has been no material change in the planned use of proceeds from our initial public offering as described in our final prospectus filed with the Securities and Exchange Commission on December 13, 2013 pursuant to Rule 424(b).

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

During the fourth quarter of the year ended January 31, 2015, we repurchased the following shares of common stock from former employees by exercising our right to repurchase unvested shares upon termination of employment at a price equal to the lower of the fair market value on the repurchase date or the original exercise price paid for such shares:

Period

Total
Number of
Shares
Purchased

Average
Price
Paid per
Share

Total Number of
Shares Purchased
as Part of Publicly
Announced Plans
or Programs

Approximate Dollar
Value of Shares
That May Yet Be
Purchased Under
the Plans or
Programs

November 1, 2014 to November 30, 2014

N/A

December 1, 2014 to December 31, 2014

11,250

3.27

N/A

January 1, 2015 to January 31, 2015

N/A

ITEM 6. SELECTED FINANCIAL DATA

The selected consolidated statements of operations data for the years ended January 31, 2015, 2014 and 2013 and the consolidated balance sheet data as of January 31, 2015 and 2014 are derived from our audited consolidated financial statements included elsewhere in this Annual Report on Form 10-K. The selected consolidated statement of operations data for the years ended January 31, 2012 and 2011 and the consolidated balance sheet data as of January 31, 2013 and 2012 have been derived from our audited consolidated financial statements, which are not included in this Annual Report on Form 10-K. The selected consolidated financial data below should be read in conjunction with the section entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our consolidated financial statements and related notes included elsewhere in this Annual Report on Form 10-K. Our historical results are not necessarily indicative of the results that may be expected in any future period. The selected consolidated financial data in this section are not intended to replace the financial statements and are qualified in their entirety by the consolidated financial statements and related notes included elsewhere in this Annual Report on Form 10-K.


	Year Ended January 31,
	2015			2014			2013			2012			2011
	(in thousands, except per share data)
Consolidated Statements of Operations Data:
Revenue:
Product	$	198,129		$	112,812		$	49,765		$	13,113		$	1,632
Support and service		29,544			12,921			4,075			900			49

Total revenue		227,673			125,733			53,840			14,013			1,681
Cost of revenue:
Product(1)		62,780			36,231			17,266			5,233			604
Support and service(1)		16,173			7,980			3,184			1,045			230

Total cost of revenue		78,953			44,211			20,450			6,278			834
Total gross profit		148,720			81,522			33,390			7,735			847
Operating expenses:
Research and development(1)		70,338			35,247			16,135			7,903			4,415
Sales and marketing(1)		143,575			75,107			39,851			12,863			2,934
General and administrative(1)		30,884			13,737			5,168			3,756			325

Total operating expenses		244,797			124,091			61,154			24,522			7,674

Loss from operations		(96,077	)		(42,569	)		(27,764	)		(16,787	)		(6,827	)
Interest income, net		139			21			32			6			5
Other expense, net		(2,071	)		(150	)		(26	)		(4	)		—

Loss before provision for income taxes		(98,009	)		(42,698	)		(27,758	)		(16,785	)		(6,822	)
Provision for income taxes		837			425			99			5			—

Net loss		(98,846	)		(43,123	)		(27,857	)		(16,790	)		(6,822	)
Accretion of redeemable convertible preferred stock		—			(36	)		(34	)		(23	)		(16	)

Net loss attributable to common stockholders	$	(98,846	)	$	(43,159	)	$	(27,891	)	$	(16,813	)	$	(6,838	)

Net loss per share attributable to common stockholders, basic and diluted	$	(1.37	)	$	(1.61	)	$	(1.53	)	$	(1.04	)	$	(0.47	)

Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted		72,304			26,772			18,236			16,226			14,457

(1)	Includes stock-based compensation expense as follows:


	Year Ended January 31,
	2015		2014		2013		2012		2011
	(in thousands)
Cost of product revenue	$	1,508	$	232	$	48	$	10	$	—
Cost of support and service revenue		2,380		468		114		31		5
Research and development		15,137		3,049		874		268		46
Sales and marketing		27,752		3,674		1,029		244		37
General and administrative		10,290		1,726		539		267		16

Total stock-based compensation expense	$	57,067	$	9,149	$	2,604	$	820	$	104


	As of January 31,
	2015		2014		2013			2012
	(in thousands)
Consolidated Balance Sheet Data:
Cash and cash equivalents	$	208,394	$	208,486	$	49,205		$	28,796
Working capital		177,384		195,787		48,835			29,787
Total assets		301,574		259,071		72,563			37,420
Deferred revenue, current and non-current		74,446		33,509		10,896			2,028
Redeemable convertible preferred stock		—		—		98,559			57,921
Total stockholders’ equity (deficit)		168,572		191,686		(53,662	)		(29,741	)

ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

You should read the following discussion and analysis of our financial condition and results of operations together with the consolidated financial statements and related notes that are included elsewhere in this Annual Report on Form 10-K. This discussion contains forward-looking statements based upon current plans, expectations and beliefs that involve risks and uncertainties. Our actual results may differ materially from those anticipated in these forward-looking statements as a result of various factors, including those set forth under “Risk Factors” and in other parts of this Annual Report on Form 10-K.

Overview

Our mission is to provide our customers with the industry’s most efficient data storage platform. We have designed and sell a flash-optimized storage platform, Adaptive Flash, that we believe is disrupting the market by enabling significant improvements in application performance and storage capacity with superior data protection, while simplifying business operations and lowering costs. At the core of our innovative Adaptive Flash platform is our Cache-Accelerated Sequential Layout file system software, which we call our CASL technology, and our cloud-based storage management and support service, InfoSight.

We were incorporated in November 2007, and we initially focused on the development of our CASL file system software and our storage platform. We shipped our first product line, our CS200 series, in August 2010. In August 2012, we introduced our CS400 series of products and a number of scale-to-fit products, including expansion shelves and controller upgrades. In April 2013, we launched InfoSight. In addition, as of May 2014, we made our scale-out firmware release generally available to all customers with a support and services agreement. From June 2014 to October 2014, we introduced several new product lines, which include the CS700 series, CS500 series, and CS300 series. The CS500 series and CS300 series replaced certain CS400 series and CS200 series products. In addition, in October 2014, we made available Fibre Channel protocol support for the CS-series arrays. In November 2014, we launched flexible pricing and deployment models (Storage on Demand) for enterprises and service providers managing storage in cloud environments. We typically recognize product revenue upon the shipment of these products. We also offer support and maintenance services including InfoSight, for periods ranging from one to five years, and recognize revenue over the term of the related support and maintenance agreement. In addition, we recognize revenue for our Storage on Demand business as services are performed.

Since shipping our first product in August 2010, our end-customer base has grown rapidly. We had over 4,970, 2,640 and 1,090 end-customers as of January 31, 2015, 2014 and 2013, respectively. Our end-customers span a range of industries such as cloud-based service providers, education, financial services, healthcare, manufacturing, state and local government and technology. To continue to grow our business, it is important that we both obtain new customers and sell additional products

and services to our existing customers. For example, in the years ended January 31, 2015, 2014 and 2013, approximately 41%, 34% and 25% of the dollar amount of orders received were from existing end-customers.

We sell our products through our network of VARs and distributors, and also engage our end-customers through our global sales force. Our channel partners act as an extension of our sales force to market our solutions directly to end-customers and generally do not hold inventory. For a certain end-customer orders, products are shipped to resellers, distributors and third-party systems integrators for various reasons including importing of products to non-U.S. countries and systems integration (e.g. SmartStack integrations) prior to shipment to the end-customer or the end-customer specified location(s). We have sales offices located in several international locations, including Australia, England, Germany and Singapore. In addition, we have sales employees located in 20 countries and distribution agreements in 30 countries. Our revenue outside North America was 18% of our total revenue for the year ended January 31, 2015, as we increased our sales and marketing efforts on a global basis.

We outsource the manufacturing of our hardware products to our contract manufacturer, Flextronics, which assembles and tests our products. Our contract manufacturer generally procures the components used in our products directly from third-party suppliers. Inventory and shipment are handled by our third-party logistics partners. Distributors and VARs generally handle fulfillment and, in some situations, shipment for our domestic and international end-customers.

We have experienced significant growth in recent periods with total revenue of $227.7 million, $125.7 million and $53.8 million in the years ended January 31, 2015, 2014 and 2013. Our net loss was $98.8 million, $43.1 million and $27.9 million in the years ended January 31, 2015, 2014 and 2013. As our sales and customer base have grown, we have also experienced growth in our deferred revenue from $10.9 million as of January 31, 2013 to $33.5 million as of January 31, 2014 and to $74.4 million as of January 31, 2015. Our gross margin has improved from approximately 62% for the year January 31, 2013 to 65% for the years ended January 31, 2014 and 2015. As a percentage of total revenue, our operating expenses declined from 114% for the year ended January 31, 2013 to 99% for the year ended January 31, 2014 and increased to 108% for the year ended January 31, 2015. As a percentage of total revenue, our non-GAAP operating loss declined from (47%) for the year ended January 31, 2013 to (27%) for the year ended January 31, 2014 to (17%) for the year ended January 31, 2015. We expect our non-GAAP operating loss as a percentage of revenue to continue to decline as we experience operating leverage in our business.

As a consequence of the rapidly evolving nature of our business and our limited operating history, we believe that period-to-period comparisons of revenue and other operating results, including gross margin and operating expenses as a percentage of our total revenue, are not necessarily meaningful and should not be relied upon as indications of future performance. Although we have experienced significant percentage growth in our total revenue, we do not believe that our historical growth rates are likely to be sustainable or indicative of future growth.

Since our founding, we have invested heavily in growing our business, particularly in research and development and sales and marketing. From January 31, 2012 to January 31, 2015, our headcount has increased from 147 to 838 employees. We intend to continue to invest in development of our solutions and sales and marketing programs to drive sustainable long-term growth. To support future sales, we plan to continue to invest significant resources in sales and marketing.

The successful growth of our business will depend on our ability to continue to expand our customer base by gaining new customers and in turn grow revenues from our existing customer base. As a result, we intend to hire additional sales and marketing personnel. We are also expanding our VAR network and contracting directly with large distributors. While these areas represent significant opportunities for us, they also pose risks and challenges that we must successfully address in order to

sustain the growth of our business and improve our operating results. For example, our investments in these areas might not result in a significant increase in productive sales personnel or channel partners. If this were to occur, we might not be able to expand our base of new customers or succeed in selling additional products to existing customers, which would affect our ability to continue to grow our revenues.

Our future performance will also depend on our ability to continue to innovate, improve functionality in our products and adapt to new technologies or changes to existing technologies. Accordingly, we also intend to continue to invest in our research and development activities. It is difficult for us to predict the timing and impact that these investments will have on future revenue. Additionally, we face significant competition in the storage market, which makes it more important that the investments we make in our business are successful. Weak global economic conditions, particularly market and financial uncertainty in the United States and Europe, or a reduction in spending even if economic conditions improve, could adversely impact our business, financial condition and operating results. If we are unable to address these challenges, our business could be adversely affected.

Key Business Metrics

We monitor the key business metrics set forth below in managing our business. We discuss revenue and gross margin below under “—Components of Operating Results.” Deferred revenue, cash flow used in operating activities, Non-GAAP Net Loss and Non-GAAP Operating Income are discussed immediately below the following table.


	Year Ended or as of January 31,
	2015			2014			2013
	(dollars in thousands)
Total revenue	$	227,673		$	125,733		$	53,840
Year-over-year percentage increase		81	%		134	%		284	%
Gross margin		65.3	%		64.8	%		62.0	%
Deferred revenue, current and non-current		74,446			33,509			10,896
Net cash provided by (used in) operating activities		5,376			(6,742	)		(18,754	)
Non-GAAP Net Loss		(41,779	)		(33,974	)		(25,253	)
Non-GAAP Operating Loss		(39,010	)		(33,420	)		(25,160	)
Non-GAAP Operating Loss as a percentage of total revenue		-17	%		-27	%		-47	%
Adjusted EBITDA		(32,328	)		(29,393	)		(24,068	)

Deferred Revenue

Our deferred revenue consists of amounts that have been either invoiced or prepaid but have not yet been recognized as revenue as of the period end. The majority of our deferred revenue consists of the unrecognized portion of revenue from sales of our support and service contracts. We monitor our deferred revenue balance because it represents a portion of revenue to be recognized in future periods.

Net Cash Provided by (Used in) Operating Activities

We monitor net cash provided by (used in) operating activities as a measure of our overall business performance. Our net cash provided by (used in) operating activities is driven in large part by our net losses. Monitoring net cash provided by (used in) operating activities enables us to analyze our financial performance without the non-cash effects of certain items such as depreciation and stock-based compensation costs, thereby allowing us to better understand and manage the cash needs of our business.

Non-GAAP Net Loss and Non-GAAP Operating Loss

To provide investors with additional information regarding our financial results, we have disclosed in this Annual Report on Form 10-K Non-GAAP Net Loss and Non-GAAP Operating Loss. We define Non-GAAP Net Loss as our net loss adjusted to exclude stock-based compensation. We define Non-GAAP Operating Loss as our operating loss adjusted to exclude stock-based compensation. We have provided reconciliations below of Non-GAAP Net Loss to net loss and Non-GAAP Operating Loss to operating loss, the most directly comparable GAAP financial measures.

Adjusted EBITDA

To provide investors with additional information regarding our financial results, we have disclosed in this Annual Report on Form 10-K Adjusted EBITDA, a non-GAAP financial measure. We define Adjusted EBITDA as our net loss, adjusted to exclude stock-based compensation, interest income, provision for income taxes and depreciation. We have provided a reconciliation below of Adjusted EBITDA to net loss, the most directly comparable GAAP financial measure.

We have included Non-GAAP Net Loss, Non-GAAP Operating Loss and Adjusted EBITDA in this Annual Report on Form 10-K because they are key measures used by our management and board of directors to understand and evaluate our core operating performance and trends, to prepare and approve our annual budget and to develop short-term and long-term operational and compensation plans. In particular, the exclusion of certain expenses in calculating Non-GAAP Net Loss, Non-GAAP Operating Loss and Adjusted EBITDA can provide useful measures for period-to-period comparisons of our core business. Accordingly, we believe that Non-GAAP Net Loss, Non-GAAP Operating Loss and Adjusted EBITDA provide useful information to investors and others in understanding and evaluating our operating results in the same manner as our management and board of directors.

Our use of Non-GAAP Net Loss, Non-GAAP Operating Loss and Adjusted EBITDA has limitations as analytical tools, and you should not consider these measures in isolation or as a substitute for analysis of our results as reported under GAAP. Some of these limitations are:

Non-GAAP Net Loss and Non-GAAP Operating Loss do not consider the potentially dilutive impact of equity-based compensation, which is an ongoing expense for us;

Adjusted EBITDA does not reflect cash capital expenditure requirements for additional capital expenditures;

Adjusted EBITDA does not reflect tax payments that may represent a reduction in cash available to us; and

Other companies, including companies in our industry, may calculate Non-GAAP Net Loss, Non-GAAP Operating Loss and Adjusted EBITDA differently, which reduces their usefulness as comparative measures.

Because of these limitations, you should consider Non-GAAP Net Loss, Non-GAAP Operating Loss and Adjusted EBITDA alongside other financial performance measures, including various cash flow metrics, net loss and our other GAAP results. We compensate for these limitations by also reviewing our GAAP financial statements.

Reconciliations of Non-GAAP Net Loss and Adjusted EBITDA to net loss and Non-GAAP Operating Loss to operating loss are provided below:


	Year Ended January 31,
	2015			2014			2013
	(in thousands)
Net loss	$	(98,846	)	$	(43,123	)	$	(27,857	)
Stock-based compensation expense		57,067			9,149			2,604

Non-GAAP Net Loss	$	(41,779	)	$	(33,974	)	$	(25,253	)

Interest income, net		(139	)		(21	)		(32	)
Provision for income taxes		837			425			99
Depreciation		8,753			4,177			1,118

Adjusted EBITDA	$	(32,328	)	$	(29,393	)	$	(24,068	)

Loss from operations	$	(96,077	)	$	(42,569	)	$	(27,764	)
Stock-based compensation expense		57,067			9,149			2,604

Non-GAAP Operating Loss	$	(39,010	)	$	(33,420	)	$	(25,160	)

Components of Operating Results

Revenue

Our total revenue is comprised of the following:

Product Revenue. We generate the substantial majority of our product revenue from the sales of our storage products. It is our practice to identify a direct customer or an end-customer from our VARs and distributors prior to shipment. In the majority of instances, products are shipped directly to the direct customer or the end-customers. For a certain end-customer orders, products are shipped to resellers, distributors and third-party systems integrators for various reasons including importing of products to non-U.S. countries and systems integration (e.g. SmartStack integrations) prior to shipment to the end-customer or the end-customer specified location. Assuming all other revenue recognition criteria have been met, we generally recognize revenue on sales upon shipment from our origin location in California, as title and risk of loss are transferred at that time. For certain VARs and distributors, title and risk of loss is transferred upon delivery to the end-customers and revenue is recognized after delivery has been completed. Our arrangements with VARs and distributors do not contain rights of return, subsequent price discounts, price protection or other allowances for shipments completed.

Support and Service Revenue. We generate our support and service revenue primarily from support and service contracts, which include our InfoSight cloud-based monitoring and management platform. The majority of our product sales are bundled with support and service contracts with terms ranging from one to five years. We recognize revenue from support and service contracts over the contractual service period. Our support and service revenue also includes our Storage on Demand (SoD) service offering. Under this pay-as-you-go subscription model, customers are generally billed on a monthly basis based on the amount of data consumed during the month. The SoD service offering includes all support services such as InfoSight. Revenue is recognized as services are performed. As a percentage of total revenue, we expect our support and service revenue to increase as we add new customers and renew existing support and service contracts, and our customers consume more usage of our SoD service.

See “—Critical Accounting Policies and Estimates, Revenue Recognition” for further information on our revenue recognition policy.

Cost of Revenue

Our total cost of revenue is comprised of the following:

Cost of Product Revenue. Cost of product revenue primarily includes costs paid to our third-party contract manufacturer, which includes the costs of our components, and personnel costs associated with our manufacturing operations. Personnel costs consist of salaries, benefits, bonuses and stock-based compensation. Our cost of product revenue also includes warranty costs, inventory related expenses, freight and allocated overhead costs. Overhead costs consist of certain facilities, depreciation, benefits and IT costs. We expect our cost of product revenue to increase as our product revenue increases.

Cost of Support and Service Revenue. Cost of support and service revenue includes personnel costs associated with our global customer support organization, operation and administration of our service depots, cost from service inventory reserves and allocated overhead costs. Personnel costs consist of salaries, benefits, bonuses and stock-based compensation. Overhead costs consist of certain facilities, depreciation, benefits and IT costs. We expect our cost of support and service revenue to increase as our installed end-customer base grows.

Gross Margin

Gross margin, or gross profit as a percentage of total revenue, has been and will continue to be affected by a variety of factors, including the average sales price of our storage products and related support and service contracts, manufacturing and overhead costs, component costs, the mix of products sold, and our ability to leverage our existing infrastructure as we continue to grow. We expect our gross margins to fluctuate over time depending on the factors described above.

Operating Expenses

Our operating expenses consist of research and development, sales and marketing, and general and administrative expense. Personnel costs are the most significant component of operating expenses.

Research and Development. Research and development expense consists primarily of personnel costs and allocated overhead and also includes depreciation expense from property and equipment purchases, consulting and other costs to support our development activities. To date, we have expensed all research and development costs as incurred. We expect research and development expense to continue to increase in absolute dollars as we continue to invest in our research and product development efforts to enhance our product capabilities, expand our product offerings and access new customer markets, although such expense may fluctuate as a percentage of total revenue.

Sales and Marketing. Sales and marketing expense consists primarily of personnel costs, sales commission costs and allocated overhead. We expense sales commission costs as incurred. Sales and marketing expense also includes costs for recruiting and training channel partners, market development programs, promotional and other marketing activities, travel, office equipment, depreciation of proof-of-concept evaluation units and outside consulting costs. We expect sales and marketing expense to continue to increase in absolute dollars as we expand our sales and marketing headcount in all markets and expand our international operations, although such expense may fluctuate as a percentage of total revenue.

General and Administrative. General and administrative expense consists of personnel costs, professional services and allocated overhead. General and administrative personnel include our executive, finance, human resources, investor relations, compliance, administrative, IT, facilities and legal organizations. Professional services consist primarily of legal, auditing, accounting and other consulting costs. We expect general and administrative expense to continue to increase in absolute

dollars as we have recently incurred, and expect to continue to incur, additional general and administrative expenses as we grow our operations and operate as a public company, including higher legal, corporate insurance and accounting expenses.

Interest Income and Other Expense, Net

Interest income consists of interest earned on our cash and cash equivalent balances. We have historically invested our cash in money-market funds. We expect interest income, which has not been historically significant to our operations, to vary each reporting period depending on our average investment balances during the period, types and mix of investments and market interest rates.

Other expense, net consists primarily of gains and losses from foreign currency transactions and revaluation of non-U.S. dollar denominated assets and liabilities.

Provision for Income Taxes

Provision for income taxes consists primarily of state income taxes in the United States and income taxes in certain foreign jurisdictions in which we conduct business. We provide a full valuation allowance for U.S. deferred tax assets, which includes net operating loss, or NOL, carryforwards and tax credits related primarily to research and development. We expect to maintain this full valuation allowance for the foreseeable future as it is more likely than not that the assets will not be realized based on our history of losses. At January 31, 2015, we had federal and state NOL carryforwards of $170.8 million and $90.5 million that expire between 2028 through 2035. Under Section 382 of the U.S. Internal Revenue Code of 1986, or the Code, a corporation that undergoes an “ownership change” is subject to limitations on its ability to utilize its pre-change NOLs to offset future taxable income. In September 2013, we completed an analysis to evaluate whether there are any limitations of our NOLs and concluded no limitations currently exist. We believe our facts and circumstances have not changed that would create any additional limitations as of January 31, 2015. While we do not believe that we have experienced an ownership change that would result in limitations, regulatory changes, such as suspension on the use of NOLs, could result in the expiration of our NOLs or otherwise cause them to be unavailable to offset future income tax liabilities.

Results of Operations

The following tables summarize our consolidated results of operations for the periods presented and as a percentage of our total revenue for those periods. The period-to-period comparison of results is not necessarily indicative of results for future periods.


	Year Ended January 31,
	2015			2014			2013
	(in thousands)
Consolidated Statements of Operations Data:
Revenue:
Product	$	198,129		$	112,812		$	49,765
Support and service		29,544			12,921			4,075

Total revenue		227,673			125,733			53,840
Cost of revenue:
Product(1)		62,780			36,231			17,266
Support and service(1)		16,173			7,980			3,184

Total cost of revenue		78,953			44,211			20,450
Total gross profit		148,720			81,522			33,390
Operating expenses:
Research and development(1)		70,338			35,247			16,135
Sales and marketing(1)		143,575			75,107			39,851
General and administrative(1)		30,884			13,737			5,168

Total operating expenses		244,797			124,091			61,154

Loss from operations		(96,077	)		(42,569	)		(27,764	)
Interest income, net		139			21			32
Other expense, net		(2,071	)		(150	)		(26	)

Loss before provision for income taxes		(98,009	)		(42,698	)		(27,758	)
Provision for income taxes		837			425			99

Net loss	$	(98,846	)	$	(43,123	)	$	(27,857	)

(1)	Includes stock-based compensation expense as follows:


	Year Ended January 31,
	2015		2014		2013
	(in thousands)
Cost of product revenue	$	1,508	$	232	$	48
Cost of support and service revenue		2,380		468		114
Research and development		15,137		3,049		874
Sales and marketing		27,752		3,674		1,029
General and administrative		10,290		1,726		539

Total stock-based compensation expense	$	57,067	$	9,149	$	2,604


	Year Ended January 31,
	2015			2014			2013
Revenue:
Product		87	%		90	%		92	%
Support and service		13			10			8

Total revenue		100			100			100
Cost of revenue:
Product		28			29			32
Support and service		7			6			6

Total cost of revenue		35			35			38
Total gross profit		65			65			62
Operating expenses:
Research and development		31			28			30
Sales and marketing		63			60			74
General and administrative		14			11			10

Total operating expenses		108			99			114

Loss from operations		(43	)		(34	)		(52	)
Interest income, net		—			—			—
Other expense, net		—			—			—

Loss before provision for income taxes		(43	)		(34	)		(52	)
Provision for income taxes		—			—			—

Net loss		(43	)%		(34	)%		(52	)%

Comparison of the Years Ended January 31, 2015 and 2014

Revenue


	Year Ended January 31,
	2015		2014		Change
	Amount		Amount		Amount		%
	(dollars in thousands)
Revenue:
Product	$	198,129	$	112,812	$	85,317		76	%
Support and service		29,544		12,921		16,623		129

Total revenue	$	227,673	$	125,733	$	101,940		81	%

Total revenue increased by $101.9 million, or 81%, during the year ended January 31, 2015 compared to the year ended January 31, 2014. The revenue growth reflects increased demand for our storage products and related support and service. The increase in product revenue was driven by higher sales of our storage products to existing and new end-customers, expansion into Global 5000 enterprises and cloud service providers, and international expansion. We acquired 2,334 new end-customers during the year ended January 31, 2015. The increase in support and service revenue was driven by higher product sales and the resulting expansion of our installed base of end-customers.

Cost of Revenue and Gross Margin


	Year Ended January 31,
	2015			2014			Change
	Amount			Amount			Amount		%
	(dollars in thousands)
Cost of revenue:
Product	$	62,780		$	36,231		$	26,549		73	%
Support and service		16,173			7,980			8,193		103

Total cost of revenue	$	78,953		$	44,211		$	34,742		79	%

Gross margin		65.3	%		64.8	%

Cost of revenue increased by $34.7 million, or 79%, during the year ended January 31, 2015 compared to the year ended January 31, 2014. The increase in cost of product revenue was driven primarily by higher product sales. The increase in cost of product revenue was also impacted by higher costs of $3.0 million in our manufacturing operations, primarily driven by personnel costs, including stock-based compensation, associated with increased headcount and increase in allocated overhead resulting from higher facilities utilization. The increase in cost of support and service revenue was primarily attributable to higher costs of $6.5 million in our global customer support organization, which is primarily driven by higher headcount. This includes higher personnel costs, stock-based compensation, and allocated overhead resulting from higher facilities utilization.

Gross margin increased from 64.8% during the year ended January 31, 2014 to 65.3% during the year ended January 31, 2015. Our gross margin improvement from prior year was driven by increases in both product and support and service margins. Product gross margin increased by 0.4 percentage points from 67.9% to 68.3% during the year ended January 31, 2015 compared to the year ended January 31, 2014. The majority of the improvement in product gross margin from prior year was due to continuing operational leverage and efficiencies in our supply chain infrastructure as well as improving manufacturing yield and quality. Support and service gross margin increased by 7.1 percentage points from 38.2% to 45.3% during the year ended January 31, 2015 compared to the year ended January 31, 2014. The improvements in support and service gross margin from prior year were driven by increased revenue from our larger base of end-customers and economies of scale from our support organization, enabled by the automation capabilities of InfoSight.

Operating Expenses


	Year Ended January 31,
	2015					2014					Change
	Amount		% of Total Revenue			Amount		% of Total Revenue			Amount		%
	(dollars in thousands)
Operating expenses:
Research and development	$	70,338		31	%	$	35,247		28	%	$	35,091		100	%
Sales and marketing		143,575		63			75,107		60			68,468		91
General and administrative		30,884		14			13,737		11			17,147		125

Total operating expenses	$	244,797		108	%	$	124,091		99	%	$	120,706		97	%

Includes stock-based compensation expense of:
Research and development	$	15,137				$	3,049				$	12,088		396	%
Sales and marketing		27,752					3,674					24,078		655
General and administrative		10,290					1,726					8,564		496

Total	$	53,179				$	8,449				$	44,730		529	%

Research and Development

Research and development expense increased by $35.1 million, or 100%, during the year ended January 31, 2015 compared to the year ended January 31, 2014. The increase was primarily due to a $27.6 million increase in personnel costs, including stock-based compensation, resulting from headcount growth to support further development of our storage products, $3.4 million increase in allocated overhead resulting from higher facilities utilization, and $1.7 million increase in depreciation expense from property and equipment purchases as we further invest in our laboratory and test infrastructure.

Sales and Marketing

Sales and marketing expense increased by $68.5 million, or 91%, during the year ended January 31, 2015 compared to the year ended January 31, 2014. The increase was primarily due to a $46.8 million increase in personnel costs, including stock-based compensation, resulting from headcount growth, a $8.4 million increase in commission expense related to higher sales, a $3.9 million increase in travel and entertainment expenses, a $3.5 million increase in advertising and tradeshow expenses, and a $2.3 million increase in allocated overhead resulting from higher facilities utilization.

General and Administrative

General and administrative expense increased by $17.1 million, or 125%, during the year ended January 31, 2015 compared to the year ended January 31, 2014. The increase was primarily due to a $13.2 million increase in personnel costs, including stock-based compensation, resulting from headcount growth, a $1.1 million increase in accounting and professional services, and a $0.8 million increase in legal costs.

Interest Income and Other Expense, Net


	Year Ended January 31,
	2015			2014			Change
	Amount			Amount			Amount			%
	(dollars in thousands)
Interest income, net	$	139		$	21		$	118			562	%
Other expense, net		(2,071	)		(150	)		(1,921	)		1,281	%

Other expense, net consisted primarily of losses from the remeasurement of our foreign currency denominated assets. The increase in the loss from the remeasurement of our foreign currency denominated assets during the year ended January 31, 2015 compared to the year ended January 31, 2014 resulted from higher non-U.S. dollar denominated net asset balances due to increased international expansion, and the appreciation of the U.S. dollar against the Euro, British pound sterling, Australian dollar, and Canadian dollar. In November 2014, we entered into foreign currency forward contracts to minimize the short-term impact of foreign currency exchange rate fluctuations on cash and certain trade and inter-company receivables and payables. For the year ended January 31, 2015, we recognized $0.7 million in gains related to foreign currency forward contracts.

Provision for Income Taxes


	Year Ended January 31,
	2015		2014		Change
	Amount		Amount		Amount		%
	(dollars in thousands)
Provision for income taxes	$	837	$	425	$	412		97	%

The increase in the provision for income taxes during the year ended January 31, 2015 compared to the year ended January 31, 2014 was primarily due to an increase in foreign taxes related to intercompany cost plus agreements with our international subsidiaries.

Comparison of the Years Ended January 31, 2014 and 2013

Revenue


	Year Ended January 31,
	2014		2013		Change
	Amount		Amount		Amount		%
	(dollars in thousands)
Revenue:
Product	$	112,812	$	49,765	$	63,047		127	%
Support and service		12,921		4,075		8,846		217

Total revenue	$	125,733	$	53,840	$	71,893		134	%

Total revenue increased by $71.9 million, or 134%, during the year ended January 31, 2014 compared to the year ended January 31, 2013. The revenue growth reflects increased demand for our storage products and related support and service. The increase in support and service revenue was driven by higher product sales and the resulting expansion of our installed base.

Cost of Revenue and Gross Margin


	Year Ended January 31,
	2014			2013			Change
	Amount			Amount			Amount		%
	(dollars in thousands)
Cost of revenue:
Product	$	36,231		$	17,266		$	18,965		110	%
Support and service		7,980			3,184			4,796		151

Total cost of revenue	$	44,211		$	20,450		$	23,761		116	%

Gross margin		64.8	%		62.0	%

Cost of revenue increased by $23.8 million, or 116%, during the year ended January 31, 2014 compared to the year ended January 31, 2013. The increase in cost of product revenue was driven primarily by higher product sales. The increase in cost of product revenue was also impacted by higher costs of $2.3 million in our manufacturing operations, primarily driven by personnel costs associated with increased headcount. The increase in cost of support and service revenue was primarily attributable to higher costs of $3.7 million in our global customer support organization primarily driven by personnel costs associated with increased headcount and increased investments in our service depots, which are physical warehouse locations that hold service inventory in support of our customer service agreements.

Gross margin increased from 62.0% during the year ended January 31, 2013 to 64.8% during the year ended January 31, 2014 primarily as a result of higher product gross margin. Product gross margin increased by 2.6 percentage points from 65.3% to 67.9% during the year ended January 31, 2014 compared to the year ended January 31, 2013, primarily driven by our mix of products sold, lower average standard component costs from higher volume discounts and benefit from economies of scale as we improved the utilization of our existing infrastructure. Support and service gross margin increased by 16.3 percentage points from 21.9% to 38.2% during the year ended January 31, 2014 compared to the year ended January 31, 2013, due to increased recognition of deferred support and service revenue resulting from the increase in our installed base.

Operating Expenses


	Year Ended January 31,
	2014					2013					Change
	Amount		% of Total Revenue			Amount		% of Total Revenue			Amount		%
	(dollars in thousands)
Operating expenses:
Research and development	$	35,247		28	%	$	16,135		30	%	$	19,112		118	%
Sales and marketing		75,107		60			39,851		74			35,256		88
General and administrative		13,737		11			5,168		10			8,569		166

Total operating expenses	$	124,091		99	%	$	61,154		114	%	$	62,937		103	%

Includes stock-based compensation expense of:
Research and development	$	3,049				$	874				$	2,175		249	%
Sales and marketing		3,674					1,029					2,645		257
General and administrative		1,726					539					1,187		220

Total	$	8,449				$	2,442				$	6,007		246	%

Research and Development

Research and development expense increased by $19.1 million, or 118%, during the year ended January 31, 2014 compared to the year ended January 31, 2013. The increase was primarily due to a $14.9 million increase in personnel costs, including stock-based compensation, resulting from headcount growth to support further development of our storage products, $2.4 million increase in allocated overhead resulting from higher facilities utilization, and $0.9 million increase in depreciation expense from property and equipment purchases as we further invest in our laboratory and test infrastructure.

Sales and Marketing

Sales and marketing expense increased by $35.3 million, or 88%, during the year ended January 31, 2014 compared to the year ended January 31, 2013. The increase was primarily due to a $21.0 million increase in personnel costs, including stock-based compensation, resulting from headcount growth, a $3.7 million increase in commission expense related to higher sales, a $3.3 million increase in travel and entertainment expenses and a $1.7 million increase in advertising and tradeshow expenses.

General and Administrative

General and administrative expense increased by $8.6 million, or 166%, during the year ended January 31, 2014 compared to the year ended January 31, 2013. The increase was primarily due to a $5.9 million increase in personnel costs, including stock-based compensation, resulting from headcount growth and a $2.7 million increase in spending on consulting resources and professional services.

Interest Income and Other Expense, Net


	Year Ended January 31,
	2014			2013			Change
	Amount			Amount			Amount			%
	(dollars in thousands)
Interest income, net	$	21		$	32		$	(11	)		(34	)%
Other expense, net		(150	)		(26	)		(124	)		(477	)%

The decrease in interest income, net was primarily due to the commitment fee for the line of credit during the year ended January 31, 2014, partially offset by an increase in interest income, primarily due to higher cash and cash equivalent balances.

Other expense, net consisted primarily of foreign currency remeasurement losses as a result of the US dollar strengthening during the year ended January 31, 2014. This resulted in remeasurement losses on our foreign currency denominated assets.

Provision for Income Taxes


	Year Ended January 31,
	2014		2013		Change
	Amount		Amount		Amount		%
	(dollars in thousands)
Provision for income taxes	$	425	$	99	$	326		329	%

The increase in the provision for income taxes during the year ended January 31, 2014 compared to the year ended January 31, 2013 was primarily due to an increase in foreign taxes related to intercompany cost plus agreements with our international subsidiaries.

Liquidity and Capital Resources


	As of January 31,
	2015		2014		2013
	(in thousands)
Cash and cash equivalents	$	208,394	$	208,486	$	49,205


	Year Ended January 31,
	2015			2014			2013
	(dollars in thousands)
Cash provided by (used in) operating activities	$	5,376		$	(6,742	)	$	(18,754	)
Cash used in investing activities		(20,903	)		(17,486	)		(3,554	)
Cash provided by financing activities		15,684			183,501			42,700
Foreign exchange impact on cash and cash equivalents		(249	)		8			17

Net increase (decrease) in cash and cash equivalents	$	(92	)	$	159,281		$	20,409

Other Financial and Operational Metrics:
Days Sales Outstanding		36			39			53
Days Sales Inventory(1)		42			41			55

(1)	Average number of days we hold our inventory before sale. This is calculated by taking the average beginning and ending inventory divided by total cost of revenue excluding stock-based compensation for the periods presented.

At January 31, 2015, our cash and cash equivalents were $208.4 million, of which approximately $2.8 million was held outside of the United States and not immediately available to fund domestic operations and obligations. We do not enter into investments for trading or speculative purposes.

In October 2013, we entered into an agreement with Wells Fargo Bank, National Association, or Wells Fargo, to provide a secured revolving credit facility that allows us to borrow up to $15.0 million for general corporate purposes. There was a $0.9 million reduction of the available line related to the Letter of Credit issued in July 2014 for our new facility lease in North Carolina. As of January 31, 2015, the remaining credit facility available for borrowings was $14.1 million. Amounts outstanding under the credit facility will bear interest at Wells Fargo’s prime rate with accrued interest payable on a monthly basis. In addition, we are obligated to pay a commitment fee of 0.20% per annum on the unused portion of the credit facility, with such fee payable on a quarterly basis. As of January 31, 2015, the commitment fee was capitalized and being amortized on our consolidated balance sheet. The Credit Facility was renewed in October 2014 for an incremental two-year period and now expires in October 2016. Under the credit facility renewal, we granted to Wells Fargo a first priority lien in our accounts receivable and other corporate assets, agreed to not pledge our intellectual property to other parties and became subject to certain reporting and financial covenants, including: (1) maintaining minimum tangible net worth, defined as the aggregate of total stockholders’ equity plus subordinated debt less any intangible assets and less any loans or advances to, or investments in, any related entities or individuals, of $135 million; and (2) maintaining a monthly ratio of not less than 1.25 to 1.00, based on the aggregate of our cash and net accounts receivable divided by total current liabilities minus current deferred revenue. As of January 31, 2015, no amounts had been drawn against the credit facility.

We believe that our existing cash and cash equivalents will be sufficient to meet our anticipated cash needs for at least the next 12 months. Our future capital requirements will depend on many factors, including our growth rate, the timing and extent of spending to support development efforts, the expansion of sales and marketing activities, the introduction of new and enhanced product and service offerings, and the continuing market acceptance of our products. In the event that additional financing is required from outside sources, we may not be able to raise such financing on terms acceptable to us or at all. If we are unable to raise additional capital when desired, our business, operating results and financial condition would be adversely affected.

Operating Activities

During the year ended January 31, 2015, cash provided by operating activities was $5.4 million. The primary factors affecting our cash flows from operations during this period were our net loss of $98.8 million, offset by non-cash charges of $57.1 million for stock-based compensation, $8.8 million for depreciation of our property and equipment, and net cash flows of $38.5 million provided by changes in our operating assets and liabilities. The primary driver of the changes in operating assets and liabilities was a $40.9 million increase in deferred revenue due to higher sales of support and service contracts, and a $23.2 million increase in accounts payable and accrued liabilities as a result of increase in inventory purchases and timing of payments. This was partially offset by the increase of $17.6 million in accounts receivable which was attributable to increased sales, a $6.2 million increase in inventories as a result of increased purchases to meet higher overall demand for our storage products, and a $1.8 million increase in prepaid expenses. We expect operating cash flows to continue to be affected by timing of sales and timing of collections.

During the year ended January 31, 2014, cash used in operating activities was $6.7 million. The primary factors affecting our cash flows from operations during this period were our net loss of $43.1 million, partially offset by non-cash charges of $9.1 million for stock-based compensation and $4.2 million for depreciation of our property and equipment, and net cash flows of $22.6 million provided by changes in our operating assets and liabilities. The primary driver of the changes in operating assets and liabilities was a $22.6 million increase in deferred revenue. The increase in deferred revenue was due to a greater number of support and service contracts related to the growth in our storage product sales and increased renewal of existing support and service contracts associated with our larger installed product base. Changes in our operating assets and liabilities were also significantly affected by a $7.5 million increase in accounts payable and accrued liabilities, a

$4.1 million increase in accounts receivable, a $2.2 million increase in prepaid expenses and a $1.3 million increase in inventories. The increase in accounts payable and accrued liabilities was primarily attributable to increased personnel costs to support the overall growth of our business and higher third-party professional fees for consulting and audit services as a result of our initial public offering. The increase in accounts receivable was attributable to increased sales, partially offset by improved cash collections from our customers as supported by the decrease in days sales outstanding, or DSO, as compared to the year ended January 31, 2013. The increase in inventories was primarily due to increased purchases from our contract manufacturers and the higher overall demand for our storage products.

During the year ended January 31, 2013, cash used in operating activities was $18.8 million. The primary factors affecting our cash flows during this period were our net loss of $27.9 million, partially offset by non-cash charges of $2.6 million for stock-based compensation, and $1.1 million for depreciation of our property and equipment, and net cash flows of $5.0 million provided by changes in our operating assets and liabilities. The primary drivers of the changes in operating assets and liabilities were a $9.2 million increase in accounts receivable, partially offset by an $8.9 million increase in deferred revenue. The increase in accounts receivable was attributable to increased sales, partially offset by improved cash collections from our customers as supported by the year over year decrease in DSO. We expect operating cash flows to continue to be affected by timing of sales and timing of collections. The increase in deferred revenue was due to a greater number of support and service contracts related to the growth in our storage product sales and increased renewal of existing support and service contracts associated with our larger installed product base. Changes in our operating assets and liabilities were also significantly affected by an $8.9 million increase in accounts payable and accrued liabilities and a $3.0 million increase in inventories. The increase in accounts payable and accrued liabilities was primarily attributable to increased personnel costs to support the overall growth of our business and higher third-party professional fees for consulting and audit services as we prepared for our initial public offering. The increase in inventories was primarily due to increased purchases from our contract manufacturers to support the development of new storage products in the third quarter of the year ended January 31, 2013 and the higher overall demand for our storage products.

Investing Activities

Cash used in investing activities during the year ended January 31, 2015 was $20.9 million, primarily resulting from $20.8 million used to purchase property and equipment due to an increase in expansion of our research and development and leasehold improvements related to our corporate headquarters and other facility locations. We expect to continue to make such purchases to support continued growth of our business.

Cash used in investing activities during the year ended January 31, 2014 was $17.5 million, primarily resulting from $13.6 million used to purchase property and equipment due to an increase in leasehold improvements related our new corporate headquarters, and the increase in expansion of our research and development infrastructure. Cash used in investing activities was also impacted by a $3.9 million increase in restricted cash related to a condition of our facility lease agreement of our new corporate headquarters that requires us to maintain a letter of credit, with the landlord named as the beneficiary.

Cash used in investing activities for the years ended January 31, 2013 was $3.6 million, primarily resulting from the purchase of property and equipment. We expect to continue to make such purchases to support continued growth of our business.

Financing Activities

During the year ended January 31, 2015, financing activities provided $15.7 million in cash, primarily resulting from $9.2 million of proceeds from issuance of common stock under our employee

stock purchase plan, and $7.7 million of proceeds from the exercise of stock options, net of repurchases of unvested early exercised shares, partially offset by $1.3 million payment of issuance costs related to our initial public offering in December 2013.

During the year ended January 31, 2014, financing activities provided $183.5 million in cash. In December 2013, we completed our initial public offering, which generated net proceeds of $176.7 million. We received $5.2 million of proceeds from the exercise of stock options, net of repurchases of unvested early exercised shares, and $1.6 million of proceeds from the repayment of two stockholder loans.

During the year ended January 31, 2013, financing activities provided $42.7 million in cash, primarily from $40.6 million of net proceeds received from the issuance of Series E redeemable convertible preferred stock and $2.1 million of proceeds from the exercise of stock options, net of repurchases of unvested early exercised shares.

Contractual Obligations and Commitments

The following summarizes our contractual obligations and commitments as of January 31, 2015:


	Payments Due by Period
	Total		Less Than 1 Year		1 - 3 Years		3 - 5 Years		More Than 5 Years
	(in thousands)
Operating leases(1)	$	43,003	$	6,045	$	12,461	$	12,956	$	11,541
Purchase commitments(2)		20,687		20,687		—		—		—
License commitments(3)		1,968		1,554		414		—		—
Asset retirement obligations(4)		365		—		—		—		365

Total	$	66,023	$	28,286	$	12,875	$	12,956	$	11,906

(1)

We have several operating leases in the US and at various international locations. This includes a 96-month lease commenced on November 1, 2013 for a 164,608 square foot facility in San Jose, California, and an 84-month lease commenced on August 1, 2014 for an 86,895 square foot facility for our North Carolina office. Future minimum commitments under these operating leases are as follows (in thousands):


Years ending January 31:
2016	$	6,045
2017		6,215
2018		6,246
2019		6,399
2020		6,557
Thereafter		11,541

	$	43,003

(2)	As of January 31, 2015, we had purchase commitments of $20.7 million to fulfill inventory requirements.

(3)

During the year ended January 31, 2014, we entered into two non-cancelable three-year software license and service agreements for internal use of software and services for human resource and inventory forecasting applications. During the year ended January 31, 2015, we entered into several additional non-cancelable one to three-year software license and service agreements for the internal use of software and services for communication and desktop applications, and vendor/customer relationship management.

(4)	As of January 31, 2014 and 2015, we had asset retirement obligations of $0.4 million associated with our facility lease in California, which expires in October 2021. This obligation is included in other noncurrent liabilities in the consolidated balance sheet as of January 31, 2015.

As of January 31, 2015, we had $3.8 million of unrecognized tax benefits, including interest and penalties, related to uncertain tax positions. Because of the high degree of uncertainty regarding the settlement of these liabilities, we are unable to estimate the years in which future cash outflows may occur. As a result, this amount is not included in the table above.

Off-Balance Sheet Arrangements

As of January 31, 2015 and 2014, we did not have any relationships with unconsolidated entities or financial partnerships, such as structured finance or special purpose entities that were established for the purpose of facilitating off-balance sheet arrangements or other purposes.

Segment Information

We have one primary business activity and operate in one reportable segment.

ITEM 7A. Quantitative and Qualitative Disclosures about Market Risk

Foreign Currency Exchange Risk

Our sales contracts are primarily denominated in U.S. dollars with a number of contracts denominated in foreign currencies. A portion of our operating expenses are incurred outside the United States and denominated in foreign currencies and are subject to fluctuations due to changes in foreign currency exchange rates, particularly changes in the British pound sterling, Australian dollar, Canadian dollar and Euro.

The combination of our higher non-U.S. dollar denominated net asset balances from increased international expansion, primarily in our U.S. entity, and the appreciation of the U.S. dollar caused us to recognize transaction losses of $2.1 million and $0.1 million during the years ended January 31, 2015 and 2014, respectively, in other expense, net, in the consolidated statements of operations. The $2.1 million in foreign exchange transaction losses recognized for the year ended January 31, 2015 was net of $0.7 million in gains from foreign currency forward contracts which we entered during the fourth quarter for the year ended January 31, 2015. In November 2014, we entered into foreign currency forward contracts to minimize the short-term impact of foreign currency exchange rate fluctuations on cash and certain trade and inter-company receivables and payables. These contracts reduce the exposure to fluctuations in foreign currency exchange rate movements as the gains and losses associated with foreign currency balances are offset with the gains and losses on the forward contracts. These instruments are marked to market through earnings every period and generally are one month in original maturity. We do not enter into foreign currency forward contracts for trading or speculative purposes. As our international operations grow, we will continue to reassess our approach to managing the risks relating to fluctuations in currency rates. It is difficult to predict the impact hedging activities could have on our results of operations. The fair value of foreign exchange forward contracts outstanding as of January 31, 2015 was a loss of $59,000.

Interest Rate Risk

We had cash and cash equivalents of $208.4 million as of January 31, 2015, consisting of bank deposits. Such interest-earning instruments carry a degree of interest rate risk. To date, fluctuations in interest income have not been significant.

We do not enter into investments for trading or speculative purposes and have not used any derivative financial instruments to manage our interest rate risk exposure. We have not been exposed to, nor do we anticipate being exposed to, material risks due to changes in interest rates. A hypothetical 10% change in interest rates during any of the periods presented would not have had a material impact on our financial statements.

Critical Accounting Policies and Estimates

Our consolidated financial statements have been prepared in accordance with GAAP. The preparation of these consolidated financial statements requires us to make estimates and assumptions

that affect the reported amounts of assets, liabilities, revenue and expenses, and related disclosures. We base our estimates on historical experience and on various other assumptions that we believe are reasonable under the circumstances. We evaluate our estimates and assumptions on an ongoing basis. Actual results may differ from these estimates. To the extent that there are material differences between these estimates and our actual results, our future financial statements will be affected.

The critical accounting policies requiring estimates, assumptions, and judgments that we believe have the most significant impact on our consolidated financial statements are described below.

Revenue Recognition

We generate revenue from sales of software-enabled storage products and related support and service. Our software that is integrated into the storage products is more than incidental, and functions together with the storage product to deliver its essential functionality. We also offer an optional support and service plan with a typical term of one to five years. The support plan includes automated support (Proactive Wellness), bug fixes, updates and upgrades to product firmware and our management platform, including InfoSight, telephone support and expedited delivery times for replacement hardware parts. While support is not contractually mandatory, substantially all products shipped have been purchased together with a support and service plan. We also periodically sell optional installation services with our products that are not essential to the functionality of the storage product. Substantially all of our customer arrangements contain multiple deliverables. As a result, arrangements are divided into separate units of accounting based on whether the delivered items have stand-alone value. In our typical customer arrangements, we consider the following to be separate units of accounting: the storage product (together with the integrated software), support services and installation services. We have determined that each unit of accounting has stand-alone value because they are sold separately by us or could be resold by a customer on a stand-alone basis. We allocate the total consideration to all deliverables based on our determination of the units of accounting and their relative selling prices. As we have not yet established vendor-specific objective evidence (VSOE) or identified third-party evidence of fair value for our storage product (together with the integrated software) and installation services, we use the best estimate of the selling price (BESP) of each deliverable to allocate the total arrangement fee among the separate units of accounting. Our process to determine its BESP for our products and services is based on qualitative and quantitative considerations of multiple factors, which primarily include historical stand-alone sales, margin objectives and discount behavior. Additional considerations are given to factors such as customer demographics, competitive alternatives, anticipated sales volume, costs to manufacture products or provide services, pricing practices and market conditions. During the first quarter of the year ended January 31, 2013, we established VSOE of fair value for support services based on stand-alone renewals offered to our customers. As a result, beginning in the second quarter of the year ended January 31, 2013, we allocated the fair value of consideration related to support services based on VSOE of fair value for the support services. Prior to this change, we allocated consideration related to support service based on BESP. The effect of the change from BESP to VSOE of fair value for support services did not have a material impact on the allocation of consideration.

Revenue is recognized when all of the following criteria are met:

•

Persuasive Evidence of an Arrangement Exists. We rely upon non-cancelable sales agreements and purchase orders to determine the existence of an arrangement.

•

Delivery Has Occurred. We use shipping documents to verify delivery.

•

The Fee Is Fixed or Determinable. We assess whether the fee is fixed or determinable based on the payment terms associated with the transaction.

•

Collectability Is Reasonably Assured. We assess collectability based on credit analysis and payment history.

In November 2014, we announced our Storage on Demand (SoD) service offering, for enterprises and service providers managing storage in cloud environments. Under this pay-as-you-go subscription model, customers are generally billed on a monthly basis based on the amount of data consumed during the month. The SoD service offering includes all support services such as InfoSight. Revenue is recognized as services are performed. SoD revenue is recognized in support and service revenue in the consolidated statements of operations.

Stock-Based Compensation

Compensation expense related to stock-based transactions, including employee and non-employee director stock options, is measured and recognized in the financial statements based on the fair value of the awards granted. The fair value of each option award and purchases under our 2013 Employee Stock Purchase Plan (2013 ESPP) is estimated on the grant date using the Black-Scholes-Merton option-pricing model. Stock-based compensation expense is recognized, net of forfeitures, over the requisite service periods of the awards, which is generally four years for stock options, and six months to two years for stock purchased under our 2013 ESPP.

Our use of the Black-Scholes-Merton option-pricing model requires the input of highly subjective assumptions, including the fair value of the underlying common stock, the expected term of the option, the expected volatility of the price of our common stock, risk-free interest rates and the expected dividend yield of our common stock. The assumptions used in our option-pricing model represent management’s best estimates. These estimates involve inherent uncertainties and the application of management’s judgment. If factors change and different assumptions are used, our stock-based compensation expense could be materially different in the future.

These assumptions and estimates are as follows:

•

Fair Value of Common Stock. Prior to our initial public offering in December 2013, we estimated the fair value of common stock using various valuation methodologies, including valuation analyses performed by third-party valuation firms. After the initial public offering, we used the publicly quoted price as the fair value of our common stock.

•

Risk-Free Interest Rate. We base the risk-free interest rate used in the Black-Scholes-Merton option-pricing model on the implied yield available on U.S. Treasury zero-coupon issues with a remaining term equivalent to that of the options for each option group.

•

Expected Term. The expected term represents the period that our stock-based awards are expected to be outstanding. We base the expected term assumption on our historical exercise behavior combined with estimates of the post-vesting holding period.

•

Volatility. We determine the price volatility factor based on the historical volatilities of our publicly traded peer group as we do not have a sufficient trading history for our common stock. Industry peers consist of several public companies in the technology industry that are similar to us in size, stage of life cycle, and financial leverage. We did not rely on implied volatilities of traded options in our industry peers’ common stock because the volume of activity was relatively low. We intend to continue to consistently apply this process using the same or similar public companies until a sufficient amount of historical information regarding the volatility of our own common stock share price becomes available, or unless circumstances change such that the identified companies are no longer similar to us, in which case, more suitable companies whose share prices are publicly available would be utilized in the calculation.

•

Dividend Yield. The expected dividend assumption is based on our current expectations about our anticipated dividend policy. Consequently, we used an expected dividend yield of zero.

We estimate the fair value of the RSUs using the closing market price of our common stock on the date of grant. RSUs typically vest over a four-year period.

In addition to the assumptions used in the Black-Scholes-Merton option-pricing model, we must also estimate a forfeiture rate to calculate the stock-based compensation expense for our awards. Our forfeiture rate is based on an analysis of our actual forfeitures. We will continue to evaluate the appropriateness of the forfeiture rate based on actual forfeiture experience, analysis of employee turnover and other factors. Quarterly changes in the estimated forfeiture rate can have a significant impact on our stock-based compensation expense as the cumulative effect of adjusting the rate is recognized in the period the forfeiture estimate is changed. If a revised forfeiture rate is higher than the previously estimated forfeiture rate, an adjustment is made that will result in a decrease to the stock-based compensation expense recognized in the financial statements. If a revised forfeiture rate is lower than the previously estimated forfeiture rate, an adjustment is made that will result in an increase to the stock-based compensation expense recognized in the financial statements.

We will continue to use judgment in evaluating the assumptions related to our stock-based compensation on a prospective basis. As we continue to accumulate additional data related to our common stock, we may have refinements to our estimates, which could materially impact our future stock-based compensation expense.

Income Taxes

We account for income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in our financial statements or tax returns. In addition, deferred tax assets are recorded for the future benefit of utilizing net operating losses and research and development credit carryforwards. Valuation allowances are provided when necessary to reduce deferred tax assets to the amount expected to be realized.

We apply the authoritative accounting guidance prescribing a threshold and measurement attribute for the financial recognition and measurement of a tax position taken or expected to be taken in a tax return. We recognize liabilities for uncertain tax positions based on a two-step process. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step requires us to estimate and measure the tax benefit as the largest amount that is more than 50% likely to be realized upon ultimate settlement.

Significant judgment is required in evaluating our uncertain tax positions and determining our provision for income taxes. Although we believe our judgments are reasonable, no assurance can be given that the final tax outcome of these matters will not be different from that which is reflected in our historical income tax provisions and accruals. We adjust these reserves in light of changing facts and circumstances, such as the closing of a tax audit or the refinement of an estimate. To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences may impact the provision for income taxes in the period in which such determination is made.

Significant judgment is also required in determining any valuation allowance recorded against deferred tax assets. In assessing the need for a valuation allowance, we consider all available evidence, including past operating results, estimates of future taxable income, and the feasibility of tax planning strategies. In the event that we change our determination as to the amount of deferred tax assets that can be realized, we will adjust our valuation allowance with a corresponding impact to the provision for income taxes in the period in which such determination is made.

Estimates of future taxable income are based on assumptions that are consistent with our plans. Assumptions represent management’s best estimates and involve inherent uncertainties and the application of management’s judgment. Should actual amounts differ from our estimates, the amount of our tax expense and liabilities could be materially impacted.

Recent Accounting Pronouncements

See Note 2. Summary of Significant Accounting Policies contained in the “Notes to Consolidated Financial Statements” in Item 8 of Part II of this Annual Report on Form 10-K for a full description of the recent accounting pronouncements and our expectation of their impact, if any, on our results of operations and financial conditions.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS


	Page

Report of Independent Registered Public Accounting Firm		63

Consolidated Balance Sheets		64

Consolidated Statements of Operations		65

Consolidated Statements of Comprehensive Loss		66

Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders’ Equity (Deficit)		67

Consolidated Statements of Cash Flows		68

Notes to Consolidated Financial Statements		69

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Stockholders

Nimble Storage, Inc.

We have audited the accompanying consolidated balance sheets of Nimble Storage, Inc. as of January 31, 2015 and 2014, and the related consolidated statements of operations, comprehensive loss, redeemable convertible preferred stock and stockholders’ equity (deficit), and cash flows for each of the three years in the period ended January 31, 2015. These financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. We were not engaged to perform an audit of the Company’s internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the consolidated financial position of Nimble Storage, Inc. at January 31, 2015 and 2014, and the consolidated results of its operations and its cash flows for each of the three years in the period ended January 31, 2015, in conformity with U.S. generally accepted accounting principles.

/s/ Ernst & Young LLP

San Jose, California

April 2, 2015

Nimble Storage, Inc.

Consolidated Balance Sheets

(in thousands, except per share data)


	As of January 31,
	2015			2014
Assets
Current assets:
Cash and cash equivalents	$	208,394		$	208,486
Accounts receivable, net of allowance for doubtful accounts of $0 and $76 as of January 31, 2015 and 2014, respectively		35,271			17,676
Inventories		11,981			5,412
Prepaid expenses and other current assets		4,974			3,176

Total current assets		260,620			234,750
Property and equipment, net		36,716			20,209
Restricted cash, non-current		3,983			3,900
Other long-term assets		255			212

Total assets	$	301,574		$	259,071

Liabilities and Stockholders’ Equity
Current liabilities:
Accounts payable	$	19,799		$	9,093
Accrued compensation and benefits		21,128			9,837
Deferred revenue, current portion		34,246			16,178
Other current liabilities		8,063			3,855

Total current liabilities		83,236			38,963
Deferred revenue, non-current portion		40,200			17,331
Other long-term liabilities		9,566			11,091

Total liabilities		133,002			67,385

Commitments and contingencies (Note 6)
Stockholders’ equity:
Preferred stock, par value of $0.001 per share; 5,000 shares authorized, no shares issued and outstanding as of January 31, 2015 and 2014		—			—
Common stock, par value of $0.001 per share; 750,000 shares authorized as of January 31, 2015 and 2014, respectively; 76,191 and 71,643 shares issued and outstanding as of January 31, 2015 and 2014, respectively		71			67
Additional paid-in capital		368,689			292,686
Accumulated other comprehensive income (loss)		(250	)		25
Accumulated deficit		(199,938	)		(101,092	)

Total stockholders’ equity		168,572			191,686

Total liabilities and stockholders’ equity	$	301,574		$	259,071

See Notes to Consolidated Financial Statements.

Nimble Storage, Inc.

Consolidated Statements of Operations

(in thousands, except per share data)


	Year Ended January 31,
	2015			2014			2013
Revenue:
Product	$	198,129		$	112,812		$	49,765
Support and service		29,544			12,921			4,075

Total revenue		227,673			125,733			53,840
Cost of revenue:
Product		62,780			36,231			17,266
Support and service		16,173			7,980			3,184

Total cost of revenue		78,953			44,211			20,450
Gross profit		148,720			81,522			33,390
Operating expenses:
Research and development		70,338			35,247			16,135
Sales and marketing		143,575			75,107			39,851
General and administrative		30,884			13,737			5,168

Total operating expenses		244,797			124,091			61,154

Loss from operations		(96,077	)		(42,569	)		(27,764	)
Interest income, net		139			21			32
Other expense, net		(2,071	)		(150	)		(26	)

Loss before provision for income taxes		(98,009	)		(42,698	)		(27,758	)
Provision for income taxes		837			425			99

Net loss		(98,846	)		(43,123	)		(27,857	)
Accretion of redeemable convertible preferred stock		—			(36	)		(34	)

Net loss attributable to common stockholders	$	(98,846	)	$	(43,159	)	$	(27,891	)

Net loss per share attributable to common stockholders, basic and diluted	$	(1.37	)	$	(1.61	)	$	(1.53	)

Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted		72,304			26,772			18,236

See Notes to Consolidated Financial Statements.

Nimble Storage, Inc.

Consolidated Statements of Comprehensive Loss

(in thousands)


	Year Ended January 31,
	2015		2014			2013
Net loss	$	(98,846)	$	(43,123	)	$	(27,857	)
Other comprehensive income (loss), net of taxes:
Change in cumulative translation adjustment		(275)		8			17

Comprehensive loss	$	(99,121)	$	(43,115	)	$	(27,840	)

See Notes to Consolidated Financial Statements.

Nimble Storage, Inc.

Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders’ Equity (Deficit)

(in thousands)


	Redeemable Convertible Preferred Stock						Common Stock					Additional Paid-In Capital			Notes Receivable from Stockholders			Accumu- lated Other Compre- hensive Income (Loss)			Accumu- lated Deficit			Total Stock- holders’ Equity (Deficit)



	Shares			Amount			Shares			Amount
Balance at January 31, 2012		34,620		$	57,921			19,128		$	11	$	1,403		$	(1,043	)	$	—		$	(30,112	)	$	(29,741	)
Issuance of Series E redeemable convertible preferred stock for cash, net of issuance costs of $96		4,248			40,604			—			—		—			—			—			—			—
Accretion of redeemable convertible preferred stock to redemption value		—			34			—			—		(34	)		—			—			—			(34	)
Issuance of common stock upon exercise stock options, net of repurchases		—			—			2,260			6		875			—			—			—			881
Notes receivable from stockholders		—			—			—			—		—			(519	)		—			—			(519	)
Vesting of early exercise of stock options		—			—			—			—		987			—			—			—			987
Stock-based compensation		—			—			—			—		2,604			—			—			—			2,604
Net loss		—			—			—			—		—			—			17			(27,857	)		(27,840	)

Balance at January 31, 2013		38,868			98,559			21,388			17		5,835			(1,562	)		17			(57,969	)		(53,662	)
Accretion of redeemable convertible preferred stock to redemption value		—			36			—			—		(36	)		—			—			—			(36	)
Issuance of common stock upon initial public offering, net of issuance costs of $3,973		—			—			9,200			9		175,693			—			—			—			175,702
Conversion of preferred stock into shares of common stock		(38,868	)		(98,595	)		38,868			39		98,556			—			—			—			98,595
Issuance of common stock upon stock option exercises, net of repurchases		—			—			2,187			2		1,484			—			—			—			1,486
Repayment of notes receivable from stockholders		—			—			—			—		—			1,562			—			—			1,562
Vesting of early exercise of stock options		—			—			—			—		2,005			—			—			—			2,005
Stock-based compensation		—			—			—			—		9,149			—			—			—			9,149
Net loss		—			—			—			—		—			—			8			(43,123	)		(43,115	)

Balance at January 31, 2014		—			—			71,643			67		292,686			—			25			(101,092	)		191,686
Issuance costs for initial public offering		—			—			—			—		(283	)		—			—			—			(283	)
Issuance of common stock upon stock option exercises, net of repurchases		—			—			3,508			3		7,671			—			—			—			7,674
Issuance of common stock for settlement of restricted stock units (RSUs)		—			—			532			—		—			—			—			—			—
Shares withheld related to net share settlement of RSUs		—			—			(3	)		—		(125	)		—			—			—			(125	)
Issuance of common stock under employee stock purchase plan		—			—			511			1		9,226			—			—			—			9,227
Vesting of early exercise of stock options		—			—			—			—		2,340			—			—			—			2,340
Tax benefit from employee stock plans		—			—			—			—		163			—			—			—			163
Stock-based compensation		—			—			—			—		57,011			—			—			—			57,011
Net loss		—			—			—			—		—			—			(275	)		(98,846	)		(99,121	)

Balance at January 31, 2015		—		$	—			76,191		$	71	$	368,689		$	—		$	(250	)	$	(199,938	)	$	168,572

See Notes to Consolidated Financial Statements.

Nimble Storage, Inc.

Consolidated Statements of Cash Flows

(In thousands)


	Year Ended January 31,
	2015			2014			2013
Cash flows from operating activities:
Net loss	$	(98,846	)	$	(43,123	)	$	(27,857	)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation		8,753			4,177			1,118
Stock-based compensation expense		57,067			9,149			2,604
Loss on disposal of property and equipment		—			148			—
Provision (recoveries) for allowance for doubtful accounts		(32	)		104			—
Provision (recoveries) for excess and obsolete inventories		(101	)		252			421
Changes in operating assets and liabilities:
Accounts receivable		(17,563	)		(4,055	)		(9,187	)
Inventories		(6,158	)		(1,305	)		(3,043	)
Prepaid expenses and other assets		(1,841	)		(2,182	)		(570	)
Accounts payable		8,451			333			4,318
Deferred revenue		40,937			22,613			8,868
Accrued and other liabilities		14,709			7,147			4,574

Net cash provided by (used in) operating activities		5,376			(6,742	)		(18,754	)
Cash flows from investing activities:
Purchase of property and equipment		(20,820	)		(13,613	)		(3,954	)
Proceeds from sale of property and equipment		—			27			—
Change in restricted cash		(83	)		(3,900	)		400

Net cash used in investing activities		(20,903	)		(17,486	)		(3,554	)
Cash flows from financing activities:
Proceeds from issuance of common stock, net of issuance costs		(1,310	)		176,729			—
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs		—			—			40,604
Proceeds from exercise of stock options, net of repurchases		7,729			5,201			2,096
Proceeds from issuance of stock under employee stock purchase plan		9,227			—			—
Excess tax benefit from employee stock plans		163			—			—
Proceeds from repayment of loans from stockholders		—			1,571			—
Payment of taxes related to net settlement of restricted stock units		(125	)		—			—

Net cash provided by financing activities		15,684			183,501			42,700
Foreign exchange impact on cash and cash equivalents		(249	)		8			17

Net increase (decrease) in cash and cash equivalents		(92	)		159,281			20,409
Cash and cash equivalents, beginning of period		208,486			49,205			28,796

Cash and cash equivalents, end of period	$	208,394		$	208,486		$	49,205

Supplemental disclosure of cash flow information:
Cash paid for income taxes	$	394		$	37		$	—
Cash paid for interest		23			—			—
Supplemental disclosure of noncash investing and financing activities:
Increase in accounts payable and accrued liabilities related to property and equipment purchase	$	4,776		$	6,888		$	—
Vesting of early exercised stock options		2,340			2,005			987
Conversion of preferred stock to common stock upon IPO		—			98,595			—
Deferred offering costs		—			1,027			—
Accretion of redeemable convertible preferred stock		—			36			34
Issuance of employee loan for stock options exercised		—			—			439

See Notes to Consolidated Financial Statements.

Nimble Storage, Inc.

Notes to Consolidated Financial Statements

1. Description of Business and Basis of Presentation

Description of Business

Nimble Storage, Inc. (the Company) was incorporated in the state of Delaware in November 2007. The Company’s mission is to provide its customers with the industry’s most efficient data storage platform. The Company has designed and sells a flash-optimized storage platform, Adaptive Flash, that it believes is disrupting the market by enabling significant improvements in application performance and storage capacity with superior data protection, while simplifying business operations and lowering costs. With the combination of the Company’s file system, CASL, and its cloud-based storage management and support service, InfoSight, the Company’s platform serves a broad array of enterprises and cloud-based service providers, and the Company’s software and storage systems effectively handle mainstream applications, including virtual desktops, databases, email, collaboration and analytics. The Company is headquartered in San Jose, California, with employees in several international locations, including the United Kingdom, Australia, Canada, Germany, and Singapore.

Basis of Presentation and Consolidation

The consolidated financial statements are prepared in accordance with U.S. generally accepted accounting principles (U.S. GAAP) and include the consolidated accounts of the Company and its subsidiaries. Intercompany accounts and transactions have been eliminated in consolidation.

2. Summary of Significant Accounting Policies

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Such estimates include, but are not limited to, the determination of the best estimated selling prices of deliverables included in multiple-deliverable revenue arrangements; the allowance for doubtful accounts; provision for excess or obsolete inventory; the useful lives of property and equipment; the warranty reserve; and the fair value of the Company’s common stock and stock options issued. Actual results could differ from these estimates.

Concentrations

The Company’s financial instruments that are exposed to concentrations of credit risk are primarily cash and cash equivalents and trade accounts receivable. Cash and cash equivalents are maintained primarily at one financial institution, and deposits may exceed the amount of insurance provided on such deposits. Risks associated with cash and cash equivalents are mitigated by banking with a creditworthy institution. The Company has not experienced any losses on its deposits of cash and cash equivalents.

The Company performs ongoing credit evaluations of its customers’ financial condition whenever deemed necessary and generally does not require collateral. The Company maintains an allowance for doubtful accounts based upon the expected collectability of its accounts receivable, which takes into consideration specific customer creditworthiness and current economic trends. During the third and fourth quarters of the year ended January 31, 2014, the Company consolidated the majority of its North American sales to two distributors, and as a result, accounts receivable and revenue increased in concentration. The majority of previous value added resellers (VARs) are now purchasing from these two distributors. Of all the Company’s customers, which include direct end-customers, VARs and distributors, the following customers individually accounted for more than 10% of the Company’s accounts receivable and revenue at the end of and for each period presented:


	% of Accounts Receivable						% of Revenue
	As of January 31,						Year Ended January 31,
	2015			2014			2015			2014			2013
Customer A		44	%		47	%		48	%		16	%		*
Customer B		18	%		*			*			*			*
Customer C		16	%		21	%		21	%		*			*
Customer D		*			10	%		*			*			*
Customer E		*			*			*			*			15	%

*	Represents less than 10%.

There are no concentrations of business transacted with a particular market that would severely impact the Company’s business in the near term. However, the Company currently relies on one key contract manufacturer and supplier to produce most of its products; any disruption or termination of these arrangements could materially adversely affect the Company’s operating results.

Foreign Currency Translation and Transactions

The functional currency of each of the Company’s foreign subsidiaries is its respective local currency. The Company translates all monetary assets and liabilities denominated in foreign currencies into U.S. dollars using the exchange rates in effect at the balance sheet dates and other assets and liabilities using historical exchange rates. Revenue and expenses are translated at average exchange rates in effect during the year. Translation adjustments are recorded within accumulated other comprehensive income (loss), a separate component of stockholders’ equity.

Foreign currency denominated transactions are initially recorded and re-measured at the end of each period using the applicable exchange rate in effect. Foreign currency re-measurement losses are recognized in other expense, net, in the consolidated statements of operations. Foreign currency re-measurement net losses recognized were $2.1 million, $149,000, and $26,000 for the years ended January 31, 2015, 2014, and 2013, respectively. For the year ended January 31, 2015, the $2.1 million net losses from foreign currency remeasurement included $0.7 million gains related to foreign currency forward contracts.

Fair Value

The carrying value of the Company’s financial instruments, including cash and cash equivalents, accounts receivable, accounts payable and accrued liabilities, approximates fair value.

Cash and Cash Equivalents

The Company considers all highly liquid investments with an original maturity of 90 days or less at the date of purchase to be cash equivalents. Cash and cash equivalents consist principally of cash accounts and investments in money market funds.

Restricted Cash

As a condition of the Company’s headquarters facility lease agreement, the Company is required to maintain a letter of credit of $3.9 million, with the landlord named as the beneficiary. These restricted cash balance have been excluded from the Company’s cash and cash equivalents balance and are classified as restricted cash on the Company’s consolidated balance sheets. As of January 31, 2015 and 2014, the amount of restricted cash was $4.0 million and $3.9 million, respectively, and classified as non-current (see Note 6).

Accounts Receivable

Accounts receivable are recorded at the invoiced amounts and do not bear interest. The Company maintains an allowance for doubtful accounts for estimated losses inherent in its accounts receivable portfolio. An allowance for doubtful accounts is calculated based on the aging of the Company’s trade receivables, historical experience, and management judgment. The Company writes off trade receivables against the allowance when management determines a balance is uncollectible and no longer actively pursues collection of the receivable. As of January 31, 2015 and 2014, the allowance for doubtful accounts was $0 and $76,000, respectively.

Inventories

Inventories consist primarily of raw materials related to component parts, finished goods, which include both inventory held for sale and service inventory held at service depots in support of customer service agreements, and customer evaluation inventory.

The following is a summary of the Company’s inventories by major category (in thousands):


	As of January 31,
	2015		2014
Raw materials	$	2,383	$	679
Finished goods		6,871		3,605
Evaluation inventory		2,727		1,128

	$	11,981	$	5,412

Inventory values are stated at the lower of cost (on a first-in, first-out method), or market value. A provision is recorded to adjust inventory to its estimated realizable value when inventory is determined to be in excess of anticipated demand or obsolete. In determining the provision, the Company also considers estimated recovery rates based on the nature of the inventory. Service inventory is written down to its net realizable value based upon the estimated loss of utility starting from the date the service inventory is placed in the service depots. Customer evaluation inventory is written down to its net realizable value based upon its estimated loss of utility, starting from 180 days after the unit is placed in the evaluation pool, which is the expected life of the finished goods in the evaluation pool.

The Company recorded inventory recoveries of $101,000 and inventory provisions of $252,000 and $421,000 for the years ended January 31, 2015, 2014 and 2013, respectively.

Property and Equipment

Property and equipment are stated at cost, net of accumulated depreciation. Demonstration units are not sold and are transferred from inventory at cost. Depreciation is computed using the straight-line method over the following estimated useful lives:


Property and Equipment		Useful Life
Computer equipment, lab equipment and software		3 years
Furniture and fixtures		5 years
Leasehold improvements		Shorter of estimated useful life or remaining lease term
Demonstration equipment		2 years

Repairs and maintenance are expensed as incurred.

Impairment of Long-Lived Assets

The Company evaluates events and changes in circumstances that could indicate carrying amounts of long-lived assets, including property and equipment, may not be recoverable. When such events or changes in circumstances occur, the Company assesses the recoverability of long-lived assets by determining whether or not the carrying value of such assets will be recovered through undiscounted expected future cash flows. If the total of the future undiscounted cash flows is less than the carrying amount of an asset, the Company records an impairment charge for the amount by which the carrying amount of the assets exceeds the fair value of the asset. Through January 31, 2015, the Company had not written down any of its long-lived assets as a result of impairment.

Warranties

The Company provides a standard one-year warranty for hardware components covering material defects in materials and workmanship. In addition, the Company provides a 90-day warranty on the embedded software in its products for non-conformance with documented specifications. The Company accrues for estimated warranty costs based upon historical experience, and periodically assesses the adequacy of its recorded warranty liability at the end of each period. These costs are expensed as incurred and included in cost of product revenue in the Company’s consolidated statements of operations. The Company records warranty liability in other current liabilities in its consolidated balance sheet.

The table below summarizes the activity in the warranty accrual (in thousands):


	Year Ended January 31,
	2015			2014
Beginning balance	$	537		$	275
Warranty expense for new warranties issued		1,372			1,432
Utilization of warranty obligation		(1,233	)		(1,181	)
Changes in estimates for pre-existing warranties		(485	)		11

Ending balance	$	191		$	537

Revenue Recognition

The Company generates revenue from sales of software-enabled storage products and related support. The Company’s software that is integrated on the storage products is more than incidental, and functions together with the storage product to deliver its essential functionality. The Company also offers an optional support plan (typically one to five years). The support plan includes automated support (Proactive Wellness), bug fixes, updates and upgrades to product firmware and the Company’s

management platform, including InfoSight, telephone support and expedited delivery times for replacement hardware parts. While support is not contractually mandatory, substantially all products shipped have been purchased together with a support plan. The Company also periodically sells optional installation services with its products that are not essential to the functionality of the storage product.

Substantially all of the Company’s customer arrangements contain multiple deliverables. As a result, the Company accounts for the revenue for these sales in accordance with Accounting Standards Codification (ASC) 605-25 Revenue Recognition – Multiple Element Arrangements. Arrangements are divided into separate units of accounting based on whether the delivered items have stand-alone value. In its typical customer arrangements, the Company considers the following to be separate units of accounting: the storage product (together with the integrated software), support services and installation services. The Company has determined that each unit of accounting has stand-alone value because they are sold separately by the Company or could be resold by a customer on a stand-alone basis. The Company allocates the total consideration to all deliverables based on its determination of the units of accounting and their relative selling prices.

As the Company has not yet established vendor-specific objective evidence (VSOE) or identified third-party evidence of fair value for its storage product (together with the integrated software) and installation services, it uses the best estimate of the selling price (BESP) of each deliverable to allocate the total arrangement fee among the separate units of accounting. The Company’s process to determine its BESP for its products and services is based on qualitative and quantitative considerations of multiple factors, which primarily include historical stand-alone sales, margin objectives, and discount behavior. Additional considerations are given to factors such as customer demographics, competitive alternatives, anticipated sales volume, costs to manufacture products or provide services, pricing practices, and market conditions. During the second quarter of the year ended January 31, 2013, the Company established VSOE of fair value for support services based on stand-alone renewals offered to its customers. As a result, beginning in the second quarter of the year ended January 31, 2013, the Company allocated the fair value of consideration related to support services based on VSOE of fair value for its support services. Prior to this change, the Company allocated consideration related to support services based on BESP. The effect of the change from BESP to VSOE of fair value for support services did not have a material impact on the allocation of consideration.

Revenue is recognized when all of the following criteria are met:

•

Persuasive Evidence of an Arrangement Exists. The Company relies upon non-cancelable sales agreements and purchase orders to determine the existence of an arrangement.

•

Delivery Has Occurred. The Company uses shipping documents to verify delivery.

•

The Fee Is Fixed or Determinable. The Company assesses whether the fee is fixed or determinable based on the payment terms associated with the transaction.

•

Collectability Is Reasonably Assured. The Company assesses collectability based on credit analysis and payment history.

It is the Company’s practice to identify a direct customer or an end-customer from its VARs and distributors prior to shipment. In the majority of instances, products are shipped directly to the direct customer or the end-customers. For a certain end-customer orders, products are shipped to resellers, distributors and third-party systems integrators for various reasons including importing of products to non-U.S. countries and systems integration (e.g. SmartStack integrations) prior to shipment to the end-customer or the end-customer specified location. Assuming all other revenue recognition criteria have been met, the Company generally recognizes revenue upon shipment, as title and risk of loss are transferred at that time. For certain VARs and distributors, title and risk of loss is transferred upon

delivery to the end-customer and revenue is recognized after delivery has been completed. The Company’s arrangements with VARs and distributors do not contain rights of return, subsequent price discounts, price protection or other allowances for shipments completed.

The majority of the Company’s deferred revenue consists of the unrecognized portion of revenue from sales of its support and service contracts. The Company records amounts to be recognized during the twelve months following the balance sheet date in deferred revenue, current portion in the consolidated balance sheets, and the remainder in deferred revenue, non-current portion in the consolidated balance sheets. As of January 31, 2015, the weighted average remaining contract period related to non-current deferred revenue was approximately 2.2 years.

In November 2014, the Company announced its Storage on Demand (SoD) service offering, for enterprises and service providers managing storage in cloud environments. Under this pay-as-you-go subscription model, customers are generally billed on a monthly basis based on the amount of data consumed during the month. The SoD service offering includes all support services such as InfoSight. Revenue is recognized as services are performed. SoD revenue is recognized in support and service revenue in the consolidated statements of operations.

Shipping Costs

Shipping charges billed to customers are included in product revenue and the related shipping and handling costs are included in cost of revenue.

Research and Development

Research and development expense consists of personnel costs, including stock-based compensation expense, for the Company’s research and development personnel and product development costs, including engineering services, development software and hardware tools, depreciation of capital equipment and facility costs. Research and development costs are expensed as incurred.

Advertising Costs

Advertising costs are expensed as incurred and are included in sales and marketing expense. Advertising costs for the years ended January 31, 2015, 2014 and 2013 were $3.0 million, $1.2 million and $0.4 million, respectively.

Stock-Based Compensation

Prior to the Company’s initial public offering on December 13, 2013, the Company’s board of directors determined the fair value of its common stock using various valuation methodologies, including valuation analyses performed by third-party valuation firms. After the initial public offering, the Company used the publicly quoted price as the fair value of its common stock.

The Company determines the fair value of its stock options and shares of common stock to be issued related to its employee stock purchase plan (ESPP) on the date of grant utilizing the Black-Scholes-Merton option-pricing model, and is impacted by the fair value of its common stock, as well as changes in assumptions regarding a number of highly complex and subjective variables. These variables include, but are not limited to, the expected common stock price volatility over the term of the option awards, the expected term of the awards, risk-free interest rates and expected dividend yield. The Company generally recognizes compensation expense for stock option grants and ESPP on a straight-line basis over the requisite service period, which is generally four years for stock options, and six months to two years for ESPP. Stock-based compensation expense recognized at fair value includes the impact of estimated forfeitures.

Stock-based compensation cost for restricted stock units (RSUs) is measured based on the fair value of the underlying shares on the date of grant. The RSUs generally vest over the requisite service

period. The fair value of RSUs is determined by the estimated fair value of the Company’s common stock at the time of grant. Stock-based compensation expense is recognized at fair value and includes the impact of estimated forfeitures.

Income Taxes

The Company accounts for income taxes under the asset and liability method. Deferred tax assets and liabilities are determined based on the difference between the financial statement and tax bases of assets and liabilities using the enacted tax rates in effect for the years in which the temporary differences are expected to affect taxable income. Valuation allowances are established when necessary to reduce deferred tax assets to the amounts expected to be realized.

Derivative Financial Instruments

During the year ended January 31, 2015, the Company entered into foreign currency forward contracts to minimize the short-term impact of foreign currency exchange rate fluctuations on cash and certain trade and inter-company receivables and payables. These contracts reduce the exposure to fluctuations in foreign currency exchange rate movements as the gains and losses associated with foreign currency balances are offset with the gains and losses on the forward contracts. The Company does not enter into foreign currency forward contracts for trading or speculative purposes. These instruments are marked to market through earnings every period and generally are one month in original maturity. The net gain or loss from the settlement of these foreign currency forward contracts is recorded in other expense, net in the consolidated statements of operations.

Net Loss Per Share Attributable to Common Stockholders

Prior to the Company’s initial public offering on December 13, 2013, the Company calculated its basic and diluted net loss per share attributable to common stockholders in conformity with the two-class method required for companies with participating securities. The Company considers all series of its redeemable convertible preferred stock to be participating securities. In the event a dividend is declared or paid on the Company’s common stock, holders of redeemable convertible preferred stock are entitled to a proportionate share of such dividend in proportion to the holders of common stock on an as-if converted basis. Under the two-class method, basic net loss per share attributable to common stockholders is calculated by dividing the net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding for the period, less shares subject to repurchase. Net loss attributable to common stockholders is determined by allocating undistributed earnings between common and redeemable convertible preferred stockholders. The diluted net loss per share attributable to common stockholders is computed by giving effect to all potential dilutive common stock equivalents outstanding for the period. For purposes of this calculation, redeemable convertible preferred stock, options to purchase common stock, repurchasable shares from early exercised options, unvested RSUs and shares subject to ESPP withholding are considered common stock equivalents but have been excluded from the calculation of diluted net loss per share attributable to common stockholders as their effect is antidilutive. Under the two-class method, the net loss attributable to common stockholders is not allocated to the convertible redeemable preferred stock as the convertible redeemable preferred stock do not have a contractual obligation to share in the Company’s losses.

On December 13, 2013, all shares of redeemable convertible preferred stocks were converted to common stock.

The following table sets forth the computation of net loss per share (in thousands, except per share amounts):


	Year Ended January 31,
	2015			2014			2013
Numerator:
Net loss	$	(98,846	)	$	(43,123	)	$	(27,857	)
Add: accretion of redeemable convertible preferred stock		—			(36	)		(34	)

Net loss attributable to common stockholders	$	(98,846	)	$	(43,159	)	$	(27,891	)

Denominator:
Weighted-average number of shares outstanding—basic and diluted		72,304			26,772			18,236

Net loss per share—basic and diluted	$	(1.37	)	$	(1.61	)	$	(1.53	)

The following potentially dilutive securities were excluded (as common stock equivalents) from the computation of diluted net loss per share for the periods presented as their effect would have been antidilutive (in thousands):


	As of January 31,
	2015		2014		2013
Shares subject to options to purchase common stock		12,360		16,329		12,019
Unvested restricted stock units		5,743		626		—
Unvested early exercised common shares		704		1,593		1,866
Employee stock purchase plan		320		—		—
Redeemable convertible preferred stock		—		—		38,868

Recent Accounting Pronouncements

In May 2014, the Financial Accounting Standards Board (FASB) released Accounting Standards Update (ASU) No. 2014-09, Revenue from Contracts with Customers, requiring an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. The guidance in ASU No. 2014-09 supersedes the revenue recognition requirements in Accounting Standards Codification Topic 605, Revenue Recognition and permits the use of either the retrospective or cumulative effect transition method. The Company is required to adopt this standard starting in the first quarter of fiscal 2018. Early adoption is not permitted. The Company has not yet selected a transition method and is currently in the process of determining the impact of ASU No. 2014-09 on its consolidated financial statements and related disclosures.

In July 2013, the FASB released ASU No. 2013-11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. The new standard requires that an unrecognized tax benefit should be presented as a reduction of a deferred tax asset for a net operating loss carryforward or other tax credit carryforward when settlement in this manner is available under the tax law. The Company adopted this accounting standard update on February 1, 2014 and the adoption did not have a significant impact on its consolidated financial position, results of operations, comprehensive loss or cash flows.

In February 2013, the FASB issued an accounting standard update to require reclassification adjustments from other comprehensive income to be presented either in the financial statements or in the notes to the financial statements. The Company adopted this accounting standard update on February 1, 2013 and the adoption did not have a significant impact on its consolidated financial position, results of operations, comprehensive loss or cash flows.

3. Fair Value Measurements

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The standard describes a fair value hierarchy based on three levels of inputs, of which the first two are considered observable and the last unobservable, to measure the fair value:

•

Level 1—Inputs are unadjusted quoted prices in active markets for identical assets or liabilities.

•

Level 2—Inputs are quoted prices for similar assets and liabilities in active markets or inputs other than quoted prices that are observable for the assets or liabilities, either directly or indirectly through market corroboration, for substantially the full term of the financial instruments.

•

Level 3—Inputs are unobservable inputs based on our own assumptions used to measure assets and liabilities at fair value. The inputs require significant management judgment or estimation.

In November 2014, the Company entered into foreign currency forward contracts to minimize the short-term impact of foreign currency exchange rate fluctuations on cash and certain trade and inter-company receivables and payables. These instruments are marked to market through earnings every period and generally are one month in original maturity. These instruments are classified within level 2 of the fair value hierarchy. As of January 31, 2015, the fair value of foreign exchange forward contracts outstanding was a loss of $59,000. The Company’s derivative assets and derivative liabilities as of January 31, 2015 are as follows (in thousands):


	As of January 31, 2015
	Nominal Amount		Fair Value
Forward Contracts:
Purchased	$	—	$	—
Sold	$	17,324	$	(59	)

4. Balance Sheet Components

Property and Equipment

Property and equipment, net consisted of the following (in thousands):


	As of January 31,
	2015			2014
Computer equipment	$	9,226		$	5,619
Lab equipment		17,768			6,517
Software		3,443			1,443
Furniture and fixtures		3,287			2,069
Leasehold improvements		14,461			8,377
Construction in progress		1,223			694
Demonstration equipment		1,256			770

Total property and equipment		50,664			25,489
Less: accumulated depreciation		(13,948	)		(5,280	)

Total property and equipment, net	$	36,716		$	20,209

Costs incurred in connection with the development of the Company’s software are accounted for as follows: all costs incurred in the preliminary project and post-implementation stages are expensed as incurred. Certain costs incurred in the application development stage of a new product or projects are capitalized if certain criteria are met. Such costs are depreciated on a straight-line basis over the estimated useful lives of the related assets, which was estimated to be three years. Maintenance and training costs are typically expensed as incurred.

Depreciation expense related to property and equipment for the years ended January 31, 2015, 2014 and 2013 was $8.8 million, $4.2 million and $1.1 million, respectively.

5. Employee Loans

During the years ended January 31, 2011 and 2012, the Company issued full recourse loans to two employees to facilitate the exercise of their stock options. The first of these loans was issued in December 2011 with a principal amount of $1.0 million and an interest rate of at 1.3% per annum. The loan was contractually due and payable in full in December 2020 or upon such earlier date that the Company files a registration statement related to an initial public offering. The second of these loans was issued in June 2012 with a principal amount of $439,000 and an interest of 2.3% per annum. The loan was contractually due and payable in full in June 2020 or upon such earlier date that the Company files a registration statement related to an initial public offering. The principal loan amount and the accrued interest were $1.6 million as of January 31, 2013, and were reported as a deduction from stockholders’ equity on the Company’s consolidated balance sheets. Both of these loans and related interest were repaid in full in August 2013.

6. Commitments and Contingencies

Leases

The Company leases its facilities under various noncancelable operating leases with fixed rental payments. Rent expense totaled $5.3 million, $3.1 million and $0.5 million for the years ended January 31, 2015, 2014 and 2013, respectively. Future minimum commitments under these operating leases as of January 31, 2015 were as follows (in thousands):


Years ending January 31:
2016	$	6,045
2017		6,215
2018		6,246
2019		6,399
2020		6,557
Thereafter		11,541

	$	43,003

In July 2014, the Company entered into a new facility lease agreement for its North Carolina office. The 84-month lease commenced on August 1, 2014 and provides 47,986 square feet of space. Total rent, including common area maintenance expense and fixed operating expense, payable over the lease period is $5.0 million. As part of the lease agreement, the Company will receive an allowance of $1.4 million for tenant improvements. This allowance was included in the calculation of rent expense and related deferred rent balances. As a condition of the lease agreement, the Company is required to maintain a letter of credit of $0.9 million, with the landlord named as the beneficiary. In December 2014, the Company amended the lease agreement for its North Carolina office which grants the Company access to an additional 38,909 square feet of space on February 1, 2016 through the same term as the original facility lease.

In April 2013, the Company entered into a facility lease agreement. The 96-month lease commenced on November 1, 2013 and provides 164,608 square feet space in San Jose, California.

Total rent, including operating expenses, payable over the lease period is $35.5 million. As part of the lease agreement, the Company received $4.9 million in tenant improvement allowance during the year ended January 31, 2014. This tenant improvement allowance was included in the calculation of rent expense and related deferred rent balances. As a condition of the lease agreement, the Company is required to maintain a letter of credit of $3.9 million, with the landlord named as the beneficiary. The Company has the option to extend the term of the lease for an additional period of 60 months.

Contingencies

From time to time, the Company is party to litigation and subject to claims that arise in the ordinary course of business, including actions with respect to employment claims and other matters. Although the results of litigation and claims are inherently unpredictable, the Company believes that the final outcome of such matters will not have a material adverse effect on the business, consolidated financial position, results of operations or cash flows.

On July 30, 2014, NetApp, the Company and the individual defendants participated in mediation of both lawsuits to work towards a mutually agreeable resolution to these cases, which was

unsuccessful. The parties also participated in a settlement conference under the jurisdiction of the United States District Court, Northern District of California on February 9, 2015, February 19, 2015 and March 16, 2015. The parties entered into a written settlement agreement effective March 16, 2015, the terms of which are confidential. The settlement, which is not material to the Company’s consolidated financial statements, resolved all remaining claims in the two pending litigations. Dismissals with prejudice will be entered within five days of executing the settlement agreement.

Indemnification

Some of the Company’s sales contracts require the Company to indemnify its customers against third-party claims asserting infringement of certain intellectual property rights, which may include patents, copyrights, trademarks, or trade secrets, and to pay judgments entered on such claims. The Company’s exposure under these indemnification provisions is generally limited to the total amount paid by the customer under the contract. However, certain contracts include indemnification provisions that could potentially expose the Company to losses in excess of the amount received under the contract. In addition, the Company indemnifies its officers, directors, and certain key employees while they are serving in good faith in their respective capacities. To date, there have been no claims under any indemnification provisions.

Purchase Commitments

The Company purchases components from a variety of suppliers and one contract manufacturer to provide manufacturing services for products. During the normal course of business, in order to manage manufacturing lead times and help ensure adequate component supply, the Company enters into agreements with its contract manufacturer and supplier that either allow them to procure inventory based upon criteria as defined by the Company or that establish the parameters defining the requirements. These agreements generally do not include any legally binding minimum commitment obligations. As of January 31, 2015, the Company had $22.7 million in several non-cancelable software license and service agreements for the internal use of software and services for vendor and customer relationship management, human resource, inventory forecasting application and communication and desktop applications and several operating commitments to fulfill inventory requirements arising from growing forecasts.

7. Common Stock

In December 2013, the Company completed its initial public offering of 9,200,000 shares of its common stock at a public offering price of $21.00 per share. Net cash proceeds from the initial public offering were approximately $175.4 million.

In connection with the closing of the initial public offering, all of the shares of preferred stock outstanding automatically converted into an aggregate of 38.9 million shares of common stock.

On December 18, 2013, the Company filed its Amended and Restated Certificate of Incorporation in connection with the closing of its initial public offering. Following the amendment, the Company had authorized capital stock of 755.0 million shares, comprising: (i) 750.0 million shares of common stock, par value $0.001 per share and (ii) 5.0 million shares of preferred stock, par value $0.001 per share.

As of January 31, 2015, there were 750,000,000 shares of common stock authorized with a par value of $0.001 per share. The Company had reserved the following shares of authorized but unissued common stock:


	As of January 31, 2015
Issued and outstanding stock options		12,360,137
Unvested restricted stock units		5,743,117
Equity incentive plans		8,548,742
Employee stock purchase plan		2,400,928

		29,052,924

8. Equity Incentive Plans

Plan Descriptions

2008 Equity Incentive Plan

In May 2008, the Company adopted the 2008 Equity Incentive Plan (the 2008 Plan) for the benefit of its eligible employees, consultants, and independent directors. The 2008 Plan provides for the grant of stock awards, including incentive stock options, nonqualified stock options, restricted stock, stock appreciation rights and restricted stock units (RSUs). The Company grants stock options with an exercise price equal to the fair market value of its common stock on the date of the grant, as determined by the Board. The Company’s equity awards vest over a period of time as determined by the Board and expire no later than 10 years from the date of grant. Grants to new employees generally vest over a four-year period, at a rate of 25% one year from the date the optionee’s service period begins and 1/48 monthly thereafter. Subject to adjustment for certain changes in the Company’s capital structure, the maximum aggregate number of shares of common stock that may be issued under the 2008 Plan is 55,563,156.

In December 2013, in connection with the closing of the Company’s initial public offering, the 2008 Plan was terminated and shares authorized for issuance under the 2008 Plan were cancelled (except for those shares reserved for issuance upon exercise of outstanding stock options). As of January 31, 2015, options to purchase and restricted stock units to convert to a total of 12,675,050 shares of common stock were outstanding under the 2008 Plan pursuant to their original terms and no shares were available for future grant.

2013 Equity Incentive Plan

In September 2013, the Company adopted the 2013 Equity Incentive Plan (the 2013 Plan), which became effective on December 12, 2013 and serves as the successor to the Company’s 2008 Plan. Upon completion of the Company’s initial public offering, the Company ceased granting awards under the 2008 Plan and any remaining shares available for issuance under the 2008 Plan were added to the shares reserved under the 2013 Plan. The 2013 Plan will terminate in September 2023, unless sooner terminated by the board of directors.

The 2013 Plan provides for the grant of incentive stock options, non-statutory stock options, restricted stock awards, stock bonus awards, stock appreciation rights, RSUs and performance awards, all of which may be granted to eligible employees, consultants or directors.

Under the terms of the 2013 Plan, awards may be granted at prices not less than 100% of the fair value of the Company’s common stock, as determined by the Company’s board of directors, on the date of grant for stock options. Options vest over a period of time as determined by the board of directors, generally over a four-year period, and expire ten years from date of grant.

Initially, the aggregate number of shares of the Company’s common stock that may be issued pursuant to stock awards under the 2013 Plan after the 2013 Plan becomes effective is 10,168,504 shares, plus any reserved shares not issued or subject to outstanding grants under the 2008 Plan on the date the 2013 Plan became effective, shares that are subject to stock options or RSUs granted under the 2008 Plan that cease to be subject to such stock options or other awards by forfeiture or otherwise or are issued and later forfeited or repurchased by the Company after the date the 2013 Plan became effective, and shares that are subject to stock options or other awards under the 2008 Plan that are used to pay the exercise price of an option or withheld to satisfy the tax withholding obligations related to any award. The number of shares available for grant and issuance under the 2013 Plan will automatically increase on February 1^st of each of the calendar years 2014 through 2022, by the lesser of (i) 5% of the number of shares issued and outstanding on each January 31^st immediately prior to the date of increase or (ii) such number of shares determined by the Company’s board of directors. The maximum number of shares that may be issued pursuant to the exercise of incentive stock options under the 2013 Plan is 300 million shares. As of January 31, 2015, stock options to purchase and restricted stock units to convert to a total of 5,428,204 shares of common stock were outstanding under the 2013 Plan and 8,548,742 shares were reserved for future issuance.

2013 Employee Stock Purchase Plan

In September 2013, the Company adopted the 2013 Employee Stock Purchase Plan (the 2013 ESPP), which became effective on December 12, 2013.

The 2013 ESPP initially authorizes the issuance of 2,015,299 shares of the Company’s common stock pursuant to purchase rights granted to eligible employees. The number of shares of common stock reserved for issuance will automatically increase on February 1^st of each calendar year, by an amount equal to (i) 1% of the total number of outstanding shares of common stock and common stock equivalents on the immediately preceding January 31^st, or (ii) such lesser number of shares of common stock as determined by the Company’s board of directors. The maximum number of shares that may be issued pursuant to the 2013 ESPP is 30 million shares. The 2013 ESPP is intended to qualify as an “employee stock purchase plan” within the meaning of Section 423 of the Code.

The 2013 ESPP was implemented through a series of offerings of purchase rights to eligible employees. Except for the initial offering period, each offering period is for 24 months beginning March 10^th and September 10^th of each year, with each such offering period consisting of four six-month purchase periods. The initial offering period began December 12, 2013 and will end on March 9, 2016, with purchase dates on September 9, 2014, March 9, 2015, September 9, 2015 and March 9, 2016.

Eligible employees may participate through payroll deductions of 1% to 15% of their earnings. Common stock will be issued to participating employees at a price per share equal to 85% of the lesser of (a) the fair market value on the offering date, or (b) the fair market value on the purchase date. In accordance with the 2013 ESPP, the fair market value of the Company’s common stock on the first day of the initial offering period was $21.00, the price per share at which shares were first sold to the public in the Company’s initial public offering, as specified in the Company’s final prospectus filed with the Securities and Exchange Commission on December 13, 2013 pursuant to Rule 424(b). As of January 31, 2015, the Company had 2,400,928 shares reserved for future issuance.

Early Exercises of Stock Options

Stock options granted under the 2008 Plan provide employee option holders, if approved by the Board, the right to exercise unvested options in exchange for restricted common stock, which is subject

to a repurchase right held by the Company at the lower of (i) the fair market value of its common stock on the date of repurchase or (ii) the original purchase price. Early exercises of options are not deemed to be substantive exercises for accounting purposes and accordingly, amounts received for early exercises are recorded as a liability. As of January 31, 2015 and 2014, there were 704,226 and 1,593,298 shares, respectively, subject to repurchase related to stock options early exercised and unvested. These amounts are reclassified to common stock and additional paid-in capital as the underlying shares vest. As of January 31, 2015 and 2014, the Company recorded a liability related to these shares subject to repurchase in the amount of $2.1 million and $4.4 million, respectively, within other long-term liabilities in its consolidated balance sheets.

During the year ended January 31, 2015, the Company repurchased 35,146 early exercised shares of outstanding common stock at a weighted-average price of $3.59 per share for an aggregate purchase price of $126,000. During the year ended January 31, 2014, the Company repurchased 125,035 early exercised shares of outstanding common stock at a weighted-average price of $1.75 per share for an aggregate purchase price of $219,000. During the year ended January 31, 2013, the Company repurchased 17,844 shares of outstanding common stock at a weighted-average price of $1.34 per share for an aggregate purchase price of $24,000. The common stock repurchased is removed from common stock outstanding, is not held in treasury stock and is available for reissuance.

Fair Value of Common Stock

Prior to the Company’s initial public offering, the Company’s board of directors considered numerous objective and subjective factors to determine the fair value of common stock at each grant date. These factors included, but were not limited to, (i) contemporaneous valuations of common stock performed by unrelated third-party firms; (ii) the prices for the preferred stock sold to outside investors; (iii) the rights, preferences and privileges of the preferred stock relative to the common stock; (iv) the lack of marketability of the Company’s common stock; (v) developments in the business; and (vi) the likelihood of achieving a liquidity event, such as an initial public offering or a merger or acquisition of the Company, given prevailing market conditions.

The Company has used the publicly quoted price as the fair value of its common stock since its common stock became publicly traded in December 2013.

Stock Options and RSUs

The following is a summary of the Company’s stock option and RSU activity during the year ended January 31, 2015 (in thousands, except per-share amounts):


				Shares Subject to Options Outstanding					Outstanding RSUs
	Shares Available for Grant			Shares Subject to Outstanding Options			Weighted- Average Exercise Price		Outstanding RSUs			Weighted- Average Grant Date Fair Value
Balance as of January 31, 2014		10,142			16,329		$	2.99		626		$	18.81
Additional options and RSUs authorized for issuance		3,583			—			N/A		—			N/A
Options granted		(100	)		100			25.94		—			N/A
Options exercised		—			(3,543	)		2.22		—			N/A
Options canceled		526			(526	)		8.49		—			N/A
Options repurchased		35			—			N/A		—			N/A
RSUs granted		(5,988	)		—			N/A		5,988			31.30
RSUs vested		—			—			N/A		(523	)		33.21
RSUs canceled		348			—			N/A		(348	)		28.08
RSUs withheld for tax		3			—			N/A		—			N/A

Balance as of January 31, 2015		8,549			12,360		$	3.16		5,743		$	30.07

The following table summarizes information about the Company’s stock options outstanding as of January 31, 2015 (in thousands, except per-share amounts):


	Shares Subject to Options Outstanding
	Number of Shares Subject to Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term		Aggregate Intrinsic Value
					(years)		(in thousands)
Vested and expected to vest as of January 31, 2015		11,705	$	3.07		7.38	$	226,648
Exercisable as of January 31, 2015		11,468		2.77		7.32		225,446

The options exercisable as of January 31, 2015 included options that are exercisable prior to vesting. The intrinsic value of options vested and expected to vest and become exercisable as of January 31, 2015 was calculated based on the difference between the exercise price and the fair value of the Company’s common stock as of January 31, 2015. The intrinsic value of exercised options for the years ended January 31, 2015, 2014 and 2013 was $89.1 million, $10.0 million and $2.5 million, respectively, and was calculated based on the difference between the exercise price and the fair value of the Company’s common stock as of the exercise date.

The fair value of stock options that vested in the years ended January 31, 2015, 2014 and 2013 was $11.4 million, $3.9 million and $2.4 million, respectively.

Stock-Based Compensation

The following table summarizes the components of stock-based compensation expense related to stock options, RSUs and ESPP (in thousands):


	Year Ended January 31,
	2015		2014		2013
Cost of product revenue	$	1,508	$	232	$	48
Cost of support and service revenue		2,380		468		114
Research and development		15,137		3,049		874
Sales and marketing		27,752		3,674		1,029
General and administrative		10,290		1,726		539

Total stock-based compensation expense	$	57,067	$	9,149	$	2,604

The weighted-average fair value of options granted was $14.52, $3.94 and $1.33 per share for the years ended January 31, 2015, 2014 and 2013, respectively. The Company started to issue RSUs in the year ended January 31, 2014. The weighted-average fair value of RSUs granted was $31.30 and $18.92 per share for the years ended January 31, 2015 and 2014, respectively. The weighted average fair value of stock purchase rights granted was $7.20 and $6.91 per share for the year ended January 31, 2015 and 2014, respectively.

As of January 31, 2015, there was $18.8 million of unrecognized stock-based compensation expense for stock options that will be recognized over the remaining weighted-average period of 2.4 years. As of January 31, 2015, there was $154.5 million of unrecognized stock-based compensation expense for RSUs that will be recognized over the remaining weighted-average period of 3.4 years. As of January 31, 2015, there was $3.5 million of unrecognized stock-based compensation expense for stock purchase rights that will be recognized over the remaining offering period, through September 2016.

The Company estimated the fair value of employee stock options using a Black-Scholes-Merton option-valuation model with the following assumptions:


	Year Ended January 31,
	2015			2014			2013
Expected term (in years)		6.0			6.0			5.8
Volatility		59	%		62	%		62	%
Risk-free interest rate		1.8	%		0.8% - 2.0	%		0.6% - 3.6	%
Dividend yield		0	%		0	%		0	%

Expected Term. Given the Company’s limited historical exercise behavior, the expected term of options granted was determined using the “simplified” method. Under this approach, the expected term is presumed to be the average of the vesting term and the contractual term of the option.

Expected Volatility. Since the Company does not have sufficient trading history for its common stock, the expected volatility used is based on volatility of similar entities. In evaluating similarity, the Company considered factors such as industry, stage of life cycle, size, and financial leverage.

Risk-Free Interest Rate. The risk-free rate that the Company uses is based on U.S. Treasury zero-coupon issues with remaining terms similar to the expected term of the options.

Dividend Yield. The Company has never declared or paid any cash dividends and does not plan to pay cash dividends in the foreseeable future and, therefore, uses an expected dividend yield of zero in the valuation model.

The Company is required to estimate forfeitures at the time of grant and revise those estimates in subsequent periods if actual forfeitures differ from those estimates. The Company uses historical data to estimate pre-vesting option forfeitures and records stock-based compensation expense only for those awards that are expected to vest. All stock-based payment awards are amortized on a straight-line basis over the requisite service periods of the awards, which are generally the vesting periods.

The Company accounted for the stock purchase rights at the grant date (first day of the offering period) by valuing the four purchase periods separately. The value of the stock purchase right consists of: (1) 15% discount on the purchase of the stock and (2) 85% of the call option. The call option was valued using the Black-Scholes-Merton option-pricing model with the following assumptions:


	Year Ended January 31,
	2015			2014
Expected term (in years)		0.5 - 2.0			0.8 - 2.3
Volatility		32% - 47	%		43% - 48	%
Risk-free interest rate		0.1% - 0.6	%		0.1% - 0.4	%
Dividend yield		0	%		0	%

9. 401(k) Plan

The Company has a qualified defined contribution plan under Section 401(k) of the Internal Revenue Code covering eligible employees. Participants may make pre-tax contributions to the plan from their eligible earnings up to the statutorily prescribed annual limit on pre-tax contributions under the Code. Although the plan provides for a discretionary employer matching contribution, to date the Company has not made such a contribution on behalf of employees.

10. Income Taxes

The provision for income taxes is based upon the loss before provision for income taxes as follows (in thousands):


	Year Ended January 31,
	2015			2014			2013
U.S. operations	$	(100,136	)	$	(44,007	)	$	(27,972	)
Non-U.S. operations		2,127			1,309			214

	$	(98,009	)	$	(42,698	)	$	(27,758	)

The Company’s provision for income taxes of $0.8 million for the year ended January 31, 2015 consisted of current foreign taxes, current state taxes and deferred foreign taxes. The Company’s provision for income taxes of $0.4 million for the year ended January 31, 2014 consisted of current foreign taxes, current federal taxes, current state taxes and deferred foreign taxes. The Company’s provision for income taxes of $0.1 million for the year ended January 31, 2013 consisted of current foreign taxes and current state taxes.

The Company’s effective tax rate differs from the U.S. federal statutory tax rate due to the following (in thousands):


	Year Ended January 31,
	2015			2014			2013
U.S. federal taxes at statutory tax rate	$	(33,323	)	$	(14,492	)	$	(9,438	)
State taxes, net of federal benefit		(2,743	)		(1,414	)		(1,414	)
Nondeductible expenses		396			218			187
Nondeductible stock-based compensation		5,293			1,469			689
Research and development credits		(2,739	)		(1,609	)		(855	)
Change in valuation allowance		33,942			16,253			10,930
Other		11			—			—

Provision for income taxes	$	837		$	425		$	99

The significant components of net deferred tax assets were as follows (in thousands):


	As of January 31,
	2015			2014
Deferred tax assets:
Net operating losses	$	42,696		$	25,379
Depreciation		352			366
Accruals and reserves		8,090			6,528
Deferred revenue		6,748			2,285
Stock-based compensation		9,197			1,174
Research and development tax credits		6,427			3,600

Gross deferred tax assets		73,510			39,332
Depreciation and amortization		(11	)		—

Net deferred tax assets prior to valuation allowance		73,499			39,332
Valuation allowance		(73,235	)		(39,260	)

Total net deferred tax assets	$	264		$	72

The net valuation allowance increased by $34.0 million during the years ended January 31, 2015. Management has recorded a full valuation allowance against its net domestic deferred tax assets as it is not more likely than not that the assets will be realized based on the Company’s history of losses.

As of January 31, 2015, the Company had net operating loss carryforwards and research and development credits as follows (in thousands):


	Amount		Expiration Year
Net operating losses, federal	$	170,787	2028-2035
Net operating losses, state		90,534	2028-2035
Research and development credits, federal		5,689	2028-2035
Research and development credits, California		5,749	2029 - Indefinite
Research and development credits, North Carolina		74	2029 - Indefinite

The Company uses the ‘with-and-without’ approach to determine the recognition and measurement of excess tax benefits. Accordingly, the Company has elected to recognize excess income tax benefits from stock option exercises in additional paid in capital only if an incremental income tax benefit would be realized after considering all other tax attributes presently available to the Company. As of January 31, 2015, the amount of such excess tax benefits from stock options included in net operating losses was $57.9 million and $9.7 million for federal and California purposes. In

addition, the Company has elected to account for the indirect effects of stock-based awards on other tax attributes, such as the research and alternative minimum tax credits, through its statements of operations. Federal and California tax laws impose limitations on the utilization of net operating loss and credit carryforwards in the event of an “ownership change” for tax purposes, as defined in Section 382 of the Internal Revenue Code. The Company determined there was no “ownership change” as of January 31, 2015.

The Company does not intend on remitting undistributed earnings of foreign subsidiaries and, accordingly, no deferred tax liability has been established relative to these earnings. As of January 31, 2015, the Company’s undistributed earnings of foreign subsidiaries were $2.4 million.

The Company recognizes interest and penalties related to uncertain tax positions, if any, as a component of its income tax provision. The Company recognized de minimis interest and penalties related to uncertain tax positions for the years ended January 31, 2015, 2014 and 2013.

A reconciliation of the beginning and ending balances of gross unrecognized tax benefits, before interest and penalties is as follows (in thousands):


	Amount
Balance as of January 31, 2012	$	548
Additions for tax positions related to prior year		0
Additions for tax positions related to current year		535
Reductions for tax positions related to prior year		0

Balance as of January 31, 2013		1,083
Additions for tax positions related to prior year		9
Additions for tax positions related to current year		955
Reductions for tax positions related to prior year		0

Balance as of January 31, 2014		2,047
Additions for tax positions related to prior year		153
Additions for tax positions related to current year		1,594
Reductions for tax positions related to prior year		(6	)

Balance as of January 31, 2015	$	3,788

The gross unrecognized tax benefits, if recognized, would affect the effective tax rate by approximately $39,000 as of January 31, 2015. While it is often difficult to predict the final outcome of any particular uncertain tax position, the Company does not believe it is reasonably possible that the total amount of unrecognized tax benefits as of January 31, 2015 will materially change in the next 12 months.

The Company files federal, state, and foreign income tax returns in many jurisdictions in the United States and abroad. For U.S. federal and state income tax purposes, the statute of limitations currently remains open for all years due to the Company’s NOL carryforwards. The Company is not currently under examination in any jurisdiction.

The Company recorded an income tax provision of $0.8 million for the year ended January 31, 2015. The income tax provision for the year ended January 31, 2015 reflected mainly income tax expense in non-U.S. jurisdictions. The Company continues to maintain a valuation allowance for its U.S. federal and state deferred tax assets.

11. Segments

The Company’s chief operating decision maker is its chief executive officer. The chief executive officer reviews consolidated financial information accompanied by information about revenue by product line for purposes of allocating resources and evaluating financial performance. The Company has one business activity and there are no segment managers who are held accountable for operations, or operating results for levels or components. In addition, the majority of the Company’s operations and customers are located in the United States. As such, the Company has a single reporting segment and operating unit structure.

Revenue by country or region, based on the mailing address of the customer, for the periods presented was as follows (in thousands):


	Year Ended January 31,
	2015		2014		2013
North America	$	186,145	$	107,305	$	49,330
EMEA		28,210		11,731		3,895
APAC		13,303		6,550		573
Other		15		147		42

Total revenue	$	227,673	$	125,733	$	53,840

Long-lived assets located in the following countries and regions as of each period end were as follows (in thousands):


	As of January 31,
	2015		2014
North America	$	40,521	$	24,069
Other		433		252

Total long-lived assets	$	40,954	$	24,321

12. Line of Credit

In October 2013, the Company entered into an agreement with Wells Fargo Bank, National Association (Wells Fargo) to provide a secured revolving credit facility (the Credit Facility) that allows the Company to borrow up to $15.0 million for general corporate purposes. There was a $0.9 million reduction of the available line related to the Letter of Credit issued in July 2014 for the Company’s new facility lease in North Carolina. As of January 31, 2015, the remaining Credit Facility available for borrowings was $14.1 million. Amounts outstanding under the Credit Facility will bear interest at Wells Fargo’s prime rate with accrued interest payable on a monthly basis. In addition, the Company is obligated to pay a commitment fee of 0.20% per annum on the unused portion of the Credit Facility, with such fee payable on a quarterly basis. As of January 31, 2015, the commitment fee was capitalized and being amortized on the Company’s consolidated balance sheet. The Credit Facility was renewed in September 2014 for an incremental two-year period and now expires in October 2016. Under the credit facility renewal, the Company granted to Wells Fargo a first priority lien in its accounts receivable and other corporate assets, agreed to not pledge its intellectual property to other parties and became subject to certain reporting and financial covenants, as follows: (1) maintain minimum tangible net worth, defined as the aggregate of total stockholders’ equity plus subordinated debt less any intangible assets and less any loans or advances to, or investments in, any related entities or individuals, of $135 million; and (2) maintain a monthly ratio of not less than 1.25 to 1.00, based on the aggregate of its cash and net accounts receivable divided by total current liabilities minus current deferred revenue. As of January 31, 2015, no amounts had been drawn against the Credit Facility.

13. Selected Quarterly Financial Data (unaudited)

The following tables set forth selected unaudited quarterly consolidated statements of operations data for each of the eight quarters in fiscal 2015 and 2014 (in thousands, except per share data):


	Quarter Ended
	April 30, 2013			July 31, 2013			October 31, 2013			January 31, 2014			April 30, 2014			July 31, 2014			October 31, 2014			January 31, 2015
Net revenues	$	22,124		$	28,478		$	33,411		$	41,720		$	46,547		$	53,761		$	59,096		$	68,269
Gross profit		13,581			18,180			22,022			27,739			30,212			35,245			38,432			44,831
Net loss		(9,371	)		(10,463	)		(10,136	)		(13,153	)		(19,595	)		(26,117	)		(28,389	)		(24,745	)
Accretion of redeemable convertible preferred stock		(10	)		(11	)		(10	)		(5	)		—			—			—			—

Net loss attributable to common stockholders	$	(9,381	)	$	(10,474	)	$	(10,146	)	$	(13,158	)	$	(19,595	)	$	(26,117	)	$	(28,389	)	$	(24,745	)

Net loss per share attributable to common stockholders, basic and diluted	$	(0.47	)	$	(0.51	)	$	(0.48	)	$	(0.29	)	$	(0.28	)	$	(0.37	)	$	(0.39	)	$	(0.33	)

ITEM 9.

CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A. CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures

Regulations under the Securities Exchange Act of 1934, or the Exchange Act, require public companies to maintain “disclosure controls and procedures.” Rule 13a-15(e) and Rule 15d-15(e) require that a company’s controls and other procedures are designed to ensure information required to be disclosed in the reports it files, or submits under the Exchange Act, is recorded, processed, summarized and reported, within the time periods specified in the U.S. Securities and Exchange Commission’s, or the SEC’s, rules and forms. Disclosure controls and procedures include, without limitation, controls and other procedures designed to ensure information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the company’s management, including its principal executive and principal financial officers, as appropriate, to allow timely decisions regarding required disclosure.

In designing and evaluating our disclosure controls and procedures, management recognizes that disclosure controls and procedures, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the disclosure controls and procedures are met. Additionally, in designing disclosure controls and procedures, our management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible disclosure controls and procedures. Our management, with the participation of our principal executive officer and principal financial officer, evaluated the effectiveness of our disclosure controls and procedures pursuant to Rules 13a-15 under the Exchange Act, as of the end of the period covered by this Annual Report on Form 10-K for the financial year ended January 31, 2015. Based on the evaluation, as of January 31, 2015, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures are designed at a reasonable assurance level and are effective to provide reasonable assurance that information we are required to disclose in reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our chief executive officer and chief financial officer, as appropriate, to allow timely decisions regarding required disclosure.

Management’s Annual Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act). Management conducted an assessment of the effectiveness of our internal control over financial reporting based on the criteria set forth in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework). Based on the assessment, management has concluded that its internal control over financial reporting was effective as of January 31, 2015 to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements in accordance with U.S. GAAP.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting identified in management’s evaluation pursuant to Rules 13a-15(d) or 15d-15(d) of the Exchange Act during the quarter ended January 31, 2015 that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

ITEM 9B. OTHER INFORMATION

None.

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

The information required by this item is incorporated herein by reference to information contained in the Proxy Statement for our 2015 Annual Meeting of Stockholders.

Section 16(a) Beneficial Ownership Reporting Compliance

Section 16(a) of the Exchange Act requires our directors, executive officers and any persons who own more than 10% of the Company’s common stock (collectively “reporting persons”), to file initial reports of ownership and reports of changes in ownership with the SEC. Such persons are required by SEC regulation to furnish us with copies of all Section 16(a) forms that they file.

Based solely on our review of the copies of such forms furnished to us and written representations from reporting persons that all reportable transactions were reported, we believe that during the fiscal year ended January 31, 2015 the Company’s reporting persons timely filed all reports they were required to file under Section 16(a); except two reports, covering a total of six transactions, were filed late by Mr. Maheshwari; and one report, covering a total of two transactions, was filed late by Mr. Leary.

Codes of Business Conduct and Ethics

We have adopted codes of ethics, our Code of Business Conduct and Ethics for employees, which applies to all employees, including our principal executive officers, our principal financial officer and all other executive officers, and our Code of Business Conduct and Ethics for Directors, which applies to our board of directors. The Codes of Business Conduct and Ethics are available on our website at www.investors.nimblestorage.com under “Governance Documents.” We intend to satisfy the disclosure requirement under Item 5.05 of Form 8-K regarding amendment to, or waiver from, a provision of our Code of Business Conduct and Ethics by posting such information on our website at the address and location specified above.

ITEM 11. EXECUTIVE COMPENSATION

The information required by this item is incorporated herein by reference to information contained in the Proxy Statement for our 2015 Annual Meeting of Stockholders.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

The information required by this item is incorporated herein by reference to information contained in the Proxy Statement for our 2015 Annual Meeting of Stockholders.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE

The information required by this item is incorporated herein by reference to information contained in the Proxy Statement for our 2015 Annual Meeting of Stockholders.

ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES

The information required by this item is incorporated herein by reference to information contained in the Proxy Statement for our 2015 Annual Meeting of Stockholders.

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

We have filed the following documents as a part of this Annual Report on Form 10-K:

(a) Financial Statements


	Page
Report of Independent Registered Public Accounting Firm		63
Consolidated Balance Sheet		64
Consolidated Statements of Operations		65
Consolidated Statements of Comprehensive Loss		66
Consolidated Statements of Convertible Preferred Stock and Stockholders’ Equity (Deficit)		67
Consolidated Statements of Cash Flows		68
Notes to Consolidated Financial Statements		69

(b) Financial Statement Schedules

All schedules have been omitted because the required information is not present or not present in amounts sufficient to require submission of the schedules or because the information required is included in the Consolidated Financial Statements or notes thereto.

(c) Exhibits

The list of exhibits filed with this report is set forth in the Exhibit Index following the signature pages and is incorporated herein by reference.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the Registrant has duly caused this Annual Report on Form 10-K to be signed on its behalf by the undersigned, thereunto duly authorized, in San Jose, California, on the second day of April, 2015.


NIMBLE STORAGE, INC.

By:		/s/ Suresh Vasudevan
		Suresh Vasudevan Chief Executive Officer

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below hereby constitutes and appoints Suresh Vasudevan and Anup Singh, and each of them, as his true and lawful attorneys-in-fact, proxies and agents, each with full power of substitution, for him in any and all capacities, to sign any and all amendments to this Annual Report on Form 10-K, and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, granting unto said attorneys-in-fact, proxies and agents full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith, as fully for all intents and purposes as he might or could do in person, hereby ratifying and confirming all that said attorneys-in-fact, proxies and agents, or their or his substitute or substitutes, may lawfully do or cause to be done by virtue hereof.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.


Signature	Title	Date

/s/ Suresh Vasudevan Suresh Vasudevan	Chief Executive Officer and Director (Principal Executive Officer)	April 2, 2015

/s/ Anup Singh Anup Singh	Chief Financial Officer (Principal Accounting and Financial Officer)	April 2, 2015

/s/ Varun Mehta Varun Mehta	Founder, Vice President of Engineering and Director	April 2, 2015

/s/ Frank Calderoni Frank Calderoni	Director	April 2, 2015

/s/ James J. Goetz James J. Goetz	Director	April 2, 2015

/s/ William D. Jenkins, Jr. William D. Jenkins, Jr.	Director	April 2, 2015

/s/ Jerry M. Kennelly Jerry M. Kennelly	Director	April 2, 2015

/s/ Ping Li Ping Li	Director	April 2, 2015

/s/ William J. Schroeder William J. Schroeder	Director	April 2, 2015

EXHIBIT INDEX

Exhibit

Incorporated by Reference

Filed
Herewith

Number

Exhibit Description

Form

File No.

Exhibit

Filing Date

3.1

Restated Certificate of Incorporation.

S-1

333-191789

3.2

December 2, 2013

3.2

Amended and Restated Bylaws.

S-1

333-191789

3.4

December 2, 2013

4.1

Form of Common Stock Certificate.

S-1

333-191789

4.1

December 10, 2013

4.2

Amended and Restated Investors Rights Agreement, dated August 10, 2012, by and among the Registrant and certain of its stockholders, as amended.

S-1

333-191789

4.2

October 18, 2013

10.1+

Form of Indemnification Agreement.

S-1

333-191789

10.1

December 2, 2013

10.2+

2008 Equity Incentive Plan and forms of award agreements.

S-1

333-191789

10.2

October 18, 2013

10.3+

2013 Equity Incentive Plan, as amended and restated, and forms of award agreements.

10-Q

001-36233

10.3

December 12, 2014

10.4+

2013 Employee Stock Purchase Plan and form of subscription agreement.

S-1

333-191789

10.4

December 2, 2013

10.5+

Offer Letter, accepted and agreed to January 3, 2011, by and between the Registrant and Suresh Vasudevan.

S-1

333-191789

10.5

October 18, 2013

10.6+

Offer Letter, accepted and agreed to October 22, 2011, by and between the Registrant and Anup Singh.

S-1

333-191789

10.6

October 18, 2013

10.8

Office Lease, dated April 19, 2013, by and between the Registrant and RO Parkway Associates, LLC.

S-1

333-191789

10.8

October 18, 2013

10.9+

Change in Control Severance Policy.

S-1

333-191789

10.9

October 18, 2013

10.10

Credit Agreement dated October 1, 2013, by and between the Registrant and Wells Fargo Bank, National Association.

S-1

333-191789

10.10

October 18, 2013

10.11

Security Agreement dated October 1, 2013, by and between the Registrant and Wells Fargo Bank, National Association.

S-1

333-191789

10.11

October 18, 2013

10.12

Third Amendment to Credit Agreement dated September 19, 2014, by and between Registrant and Wells Fargo Bank, National Association.

10-Q

001-36233

10.4

December 12, 2014

21.1

Subsidiaries of the Registrant.

S-1

333-191789

21.1

October 18, 2013

23.1

Consent of Independent Registered Public Accounting Firm.

24.1

Power of Attorney (see page 94 to this report).

31.1

Certification of Periodic Report by Principal Executive Officer under Section 302 of the Sarbanes-Oxley Act of 2002.

31.2

Certification of Periodic Report by Principal Financial Officer under Section 302 of the Sarbanes-Oxley Act of 2002.

32.1*

Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

32.2*

Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

101.INS

XBRL Instance Document

101.SCH

XBRL Taxonomy Schema Linkbase Document

101.CAL

XBRL Taxonomy Calculation Linkbase Document

101.DEF

XBRL Taxonomy Definition Linkbase Document

101.LAB

XBRL Taxonomy Labels Linkbase Document

101.PRE

XBRL Taxonomy Presentation Linkbase Document

Indicates a management contract or compensatory plan.

As contemplated by Securities Exchange Commission Release No. 33-8212, these exhibits are furnished with this Annual Report on Form 10-K and are not deemed filed with the Securities and Exchange Commission and are not incorporated by reference in any filing of Nimble Storage, Inc. under the Securities Act of 1933, as amended, or the Exchange Act of 1934, whether made before or after the date hereof and irrespective of any general incorporation language in such filings.

Large accelerated filer

Accelerated filer

Non-accelerated filer

¨ (Do not check if a smaller reporting Company)

Smaller reporting company