Exhibit 99.1

Marvell Technology Group Ltd. Reports Fourth Fiscal Quarter and Fiscal Year 2016 Financial Results

Santa Clara, Calif. (July 19, 2016) — Marvell Technology Group Ltd. (NASDAQ: MRVL), a global leader in integrated silicon solutions, today reported financial results for the fourth fiscal quarter and fiscal year 2016, ended January 30, 2016, and reported updated financial results for the second and third quarters of fiscal 2016, ended August 1, 2015 and October 31, 2015, respectively.

Key Fourth Quarter of Fiscal 2016 and Fiscal Year 2016 Financial Highlights

Fourth Quarter of Fiscal 2016 and Fiscal Year 2016 Summary

Revenues for the fourth quarter of fiscal 2016 were $616 million, down approximately 9 percent from $675 million in the third quarter of fiscal 2016, ended October 31, 2015, and down approximately 28 percent from $857 million in the fourth quarter of fiscal 2015, ended January 31, 2015.

In the fourth quarter of fiscal 2016, storage revenue increased 12 percent sequentially, reflecting improved demand from HDD customers but was partially offset by slightly lower SSD controller sales. Networking revenue in the fourth quarter of fiscal 2016 grew 8 percent sequentially due to broad-based demand improvement across most of our product areas. Mobile and wireless revenue decreased 34 percent sequentially, mainly driven by the previously anticipated declines in revenue resulting from Marvell’s exit of the mobile handset business. The Company anticipates mobile handset platform-related revenue to decline through fiscal year 2017 due to the restructuring actions announced on September 24, 2015.

For the fiscal year end January 30, 2016, revenue was $2.7 billion, a decrease of 26 percent from $3.7 billion for the fiscal year ended January 31, 2015. For the fiscal year 2016, storage revenues declined 31 percent from fiscal year 2015 mainly due to soft PC demand compounded by lower SSD controller shipments. Networking revenue in fiscal 2016 declined 18 percent due to weak enterprise switching/routing demand. Mobile and wireless revenue in fiscal 2016 declined 27 percent mainly due to lower mobile handset platform-related revenue resulting from Marvell’s exit of the mobile handset business.

GAAP net earnings for the fourth quarter of fiscal 2016 was $4 million, or $0.01 per share (diluted) compared with a GAAP net loss of ($58) million, or ($0.11) loss per share (diluted), for the third quarter of fiscal 2016, and GAAP net income of $82 million, or $0.16 per share (diluted), for the fourth quarter of fiscal 2015.

For the fiscal year ended January 30, 2016, GAAP net loss was ($811) million, or ($1.59) per share (diluted), compared with GAAP net income of $435 million, or $0.84 per share (diluted), for the fiscal year ended January 31, 2015. The GAAP net loss in fiscal year 2016 was largely due to the payment of $750 million related to the Carnegie Mellon University litigation settlement.

Non-GAAP net income for the fourth quarter of fiscal 2016 was $55 million, or $0.11 per share (diluted), which included adjustments of approximately $50 million including: $4 million for restructuring related to the mobile handset platform business, $32 million for share-based compensation, $4 million for litigation reserves and settlements, and $10 million for other items. By comparison, non-GAAP net income for the third quarter of fiscal 2016 was $29 million, or $0.06 per share (diluted), which included adjustments of $87 million including: $46 million for restructuring related to the mobile handset platform business, $31 million for share-based compensation, $1 million for litigation reserves and settlements, and $9 million for other items. Non-GAAP net income for the fourth quarter of fiscal 2015 was $131 million, or $0.25 per share (diluted), which included adjustments of $49 million including: $38 million for share-based compensation and $11 million for other items. Refer to the GAAP to Non-GAAP reconciliation table and related footnotes contained in this press release for more details.

For the fiscal year ended January 30, 2016, non-GAAP net income was $194 million, or $0.37 per share (diluted), compared with non-GAAP net income of $611 million, or $1.15 per share (diluted) for the fiscal year ended January 31, 2015.

Marvell reports net income, basic and diluted net income per share, in accordance with generally accepted accounting principles (GAAP) and on a non-GAAP basis as outlined below. Reconciliations of GAAP net income to non-GAAP net income for the three months ended January 30, 2016, October 31, 2015, and August 31, 2015, as well as the fiscal years ended January 30, 2016 and January 31, 2015, appear in the financial statements below. Non-GAAP net income, where applicable, excludes the effect of share-based compensation, amortization and write-off of acquired intangible assets, acquisition-related costs, restructuring and other related charges, estimated litigation reserves and settlements, and certain one-time expenses and benefits that are driven by discrete events that management does not consider to be directly related to Marvell’s core operating performance.

GAAP gross margin percentage for the fourth quarter of fiscal 2016 was 50.9 percent, compared to 43.8 percent for the third quarter of fiscal 2016 and 51.4 percent for the fourth quarter of fiscal 2015. GAAP gross margin for fiscal year 2016 was 45.2 percent as compared to 50.3 percent in fiscal year 2015.

Non-GAAP gross margin percentage for the fourth quarter of fiscal 2016 was 51.9 percent, compared to 46.0 percent for the third quarter of fiscal 2016 and 51.8 percent for the fourth quarter of fiscal 2015. The sequential improvement in fourth quarter GAAP and Non-GAAP gross margin percentages was mainly due to a more lower mix of lower margin mobile handset platform-related revenues relative the prior quarter. Non-GAAP gross margin for fiscal year 2016 was 49.1 percent compared to 50.5 percent in fiscal year 2015. The decline in GAAP and non-GAAP gross margin percentages in fiscal year 2016 was mainly due to a higher mix of lower margin mobile handset platform-related revenues relative to fiscal year 2015. Refer to the GAAP to Non-GAAP reconciliation table and related footnotes at the end of this press release for more details.

Operating expenses on a GAAP basis for the fourth quarter of fiscal 2016 were $311 million, or 12 percent lower compared with $355 million in the third quarter of fiscal year 2016, and 14 percent lower compared to $360 million in the fourth quarter of fiscal 2015. Operating expenses on a GAAP basis for fiscal year 2016 were $2 billion, or 41 percent higher compared to $1.5 billion in fiscal year 2015. GAAP operating expenses for fiscal 2016 include approximately $655 million related to the Carnegie Mellon University litigation settlement, with $78.9 million of the $750 million settlement recorded in COGS. Operating expenses for the third and fourth quarters of fiscal year 2016 include $6 million and $11 million, respectively, of legal and accounting fees related to the Audit Committee investigation, and the related shareholder litigation and inquiries by the SEC and United States Attorney’s Office.

Non-GAAP operating expenses were $267 million in the fourth quarter compared to $283 million in the third quarter, a 6 percent decline, and $315 million in the fourth quarter of fiscal 2015, a 15 percent decline. For fiscal year 2016, non-GAAP operating expenses were $1.2 billion (excluding the impact of $655 million related to Carnegie Mellon University litigation settlement recorded in operating expenses), a decline of 10 percent from $1.3 billion in fiscal year 2015. Refer to the GAAP to Non-GAAP reconciliation table and related footnotes contained in this press release for more details.

Shares used to compute GAAP net income per diluted share for the fourth quarter of fiscal 2016 were 509 million shares, compared with 505 million shares in the third quarter of fiscal 2016 and 522 million shares in the fourth quarter of fiscal 2015. Shares used to compute GAAP net income per diluted share for fiscal year 2016 were 511 million shares as compared with 521 million shares for fiscal year 2015.

Shares used to compute non-GAAP net income per diluted share for the fourth quarter of fiscal 2016 were 519 million shares, compared with 519 million shares for the third quarter of fiscal 2016 and 533 million shares for the fourth quarter of fiscal 2015. Shares used to compute non-GAAP net income per diluted share for fiscal year 2016 were 526 million shares as compared with 532 million shares for fiscal year 2015.

Cash flow from operations for the fourth quarter of fiscal 2016 was $53 million, compared to $67 million in the third quarter of fiscal 2016 and $155 million reported in the fourth quarter of fiscal 2015. Cash flow from operations for fiscal year 2016 was $205 million, compared to $729 million in fiscal year 2015. Free cash flow for the fourth quarter of fiscal 2016 was $47 million, compared to the $64 million in the third quarter of fiscal 2016 and the $135 million reported in the fourth quarter of fiscal 2015. Free cash flow for fiscal year 2016 was $147 million, compared to $636 million in fiscal year 2015. Free cash flow as presented above is defined as cash flow from operations, less capital expenditures and purchases of technology licenses reported under investing and financing activities in the consolidated statement of cash flows.

Marvell made no share repurchases in the fourth quarter of fiscal 2016. In fiscal year 2016, under the company’s authorized share repurchase program, Marvell repurchased approximately 19.7 million shares for about $261 million. The remaining authorized amount for share repurchases at the end of fiscal 2016 was approximately $183 million.

Marvell paid a quarterly dividend of $0.06 per share on December 29, 2015 to all shareholders of record as of December 16, 2015. On March 16 and May 18, 2016, the Company declared cash dividends of $0.06 per share that were paid on April 22 and July 12, 2016, respectively.

The payment of future quarterly cash dividends on Marvell’s common shares is subject to, among other things, the best interests of the company and its shareholders, its results of operations, cash balances and future cash requirements, financial condition, developments in ongoing litigation, statutory requirements of Bermuda law, and other factors that the board of directors may deem relevant.

Key Third Quarter of Fiscal 2016 Financial Highlights (Updated)

On December 7, 2015, Marvell released preliminary financial results for the third quarter of fiscal 2016, ended October 31, 2015. Due to the Company’s delayed filing of its Form 10-Q, the Company is obligated to continue to adjust its financial results to account for subsequent activities (Type 1 subsequent events) occurring after December 7, 2015. For the third quarter of fiscal 2016, adjustments that have been recorded to the Company’s preliminary financial results after December 7, 2015 are detailed in the footnotes to the condensed consolidated statements of operations at the end of this press release. Accordingly, the Company’s GAAP net loss and GAAP diluted loss per share for the third quarter of fiscal 2016 are approximately ($4) million and ($0.01) less than previously reported, respectively. Due to the delayed filing and as a result of future subsequent events, there may be additional adjustments to these preliminary financial results through the date of the Company’s filing of its Form 10-Q for the third quarter of fiscal 2016.

Key Second Quarter of Fiscal 2016 Financial Highlights (Updated)

On December 7, 2015, Marvell released updated preliminary financial results for the second quarter of fiscal 2016, ended August 1, 2015. Due to the Company’s delayed filing of its Form 10-Q, the Company is obligated to continue to adjust its financial results to account for subsequent activities (Type 1 subsequent events) occurring after September 11, 2015. For the second quarter of fiscal 2016, adjustments that that have been recorded to the Company’s preliminary financial results after December 7, 2015 are detailed in the footnotes to the condensed consolidated statements of operations at the end of this press release including an additional $350.5 million charge due to the subsequent settlement in February 2016 for the Carnegie Mellon litigation (of which $78.9 million was recorded to COGS). Accordingly, the Company’s GAAP net loss and GAAP diluted loss per share for the second quarter of fiscal 2016 are approximately ($369) million and ($0.71) more than previously reported, respectively. Due to the delayed filing and as a result of future subsequent events, there may be additional adjustments to these preliminary financial results through the date of the Company’s filing of its Form 10-Q for the second quarter of fiscal 2016.

From time to time, our customers agreed to take shipments in an earlier fiscal quarter than the fiscal quarter they originally requested delivery. When such agreement would not have occurred but for the request made by Marvell, we refer to such transactions internally as “pull-ins.” Pull-in sales increased compared to historical levels beginning in the fourth quarter of fiscal 2015 and returned to historical levels in the third quarter of fiscal 2016. Net revenue in fiscal 2016 related to pull-in sales for shipments taken early by our customers was approximately 9 percent and 11 percent of net revenue in the first and second quarters of fiscal 2016, respectively, and declined to less than 1 percent of net revenue in both the third and fourth quarters of fiscal 2016. This compares to net revenue in fiscal 2015 related to pull-in sales for shipments taken early by our customers, which was less than 1 percent in the first and second quarters of fiscal 2015, 1 percent in the third quarter of fiscal 2015, and increased to 3 percent in the fourth quarter of fiscal 2015. Beginning in fiscal 2017, our policy is not to engage in pull-in transactions and we therefore do not expect them to have any meaningful impact on net revenue in future periods.

CMU Settlement

On February 17, 2016, Marvell announced that, pursuant to a court-ordered mediation, the company and Carnegie Mellon University settled their patent infringement lawsuit. The parties resolved the case on mutually acceptable terms, including an aggregate payment by Marvell to CMU of $750 million, with no ongoing royalty payments. Marvell paid the $750 million in the first quarter of fiscal 2017.

NASDAQ Compliance Plan

On May 3, 2016, Marvell announced that the company received written notification from Nasdaq that, following Marvell’s hearing before The Nasdaq Hearings Panel on April 14, 2016, it granted the Company an extension of time to September 6, 2016 to regain compliance with continued listing requirements. Until that time, shares of Marvell stock will remain listed on The Nasdaq Stock Market.

On February 22, 2016, the Audit Committee approved the engagement of Deloitte & Touche LLP as the Company’s new independent public accounting firm. On March 1, 2016, the Company reported the results of the Audit Committee’s independent investigation of certain accounting and internal control matters. The preparation and filing of the Company’s Annual Report on Form 10-K for fiscal 2016 and its Quarterly Reports on Form 10-Q for the second and third quarters of fiscal 2016 and for the first quarter of fiscal 2017 have yet to be completed. The Company is working diligently to complete these filings as soon as practicable, at which time Marvell believes it will regain full compliance with continued listing requirements.

Additions to Company Leadership

On April 5, 2016, Marvell announced a senior leadership transition with the departure of Chief Executive Officer Dr. Sehat Sutardja and President Weili Dai from their management positions. On May 1, 2016, Richard S. Hill was appointed Chairman of the Board. Mr. Hill will also serve as the company’s principal executive officer through the filing of Marvell’s Quarterly Report on Form 10-Q for the quarter ended July 30, 2016.

On July 11, 2016, Matthew J. Murphy joined Marvell as President and Chief Executive Officer and as a director. A veteran of Maxim Integrated, Mr. Murphy joins an executive team and Board of Directors that has seen a significant infusion of new talent over the past few months, and will be leading that team in the transformation of the Company with a focus on profitable growth.

In addition to Mr. Murphy and Mr. Hill, joining the Board of Directors since April 1, 2016 are Peter A. Feld, Oleg Khaykin, Robert E. Switz and Michael Strachan. Recent additions to the executive team include Mitchell Gaynor, Executive Vice President and Chief Legal Officer, Chris Koopmans, Executive Vice President Marketing and Sales, and Andy Micallef, Chief Operations Officer. Maya Strelar-Migotti has returned to her role as Executive Vice President of the Smart Networked Devices and Solutions Business Group and Pantelis Alexopoulos has returned to his role as Executive Vice President of the Storage Business Group. While a search for a permanent Chief Financial Officer is on-going, the company also recently announced Willem Meintjes as Senior Vice President of Finance.

Conference Call

Marvell will conduct a conference call on Tuesday, July 19, 2016 at 1:45 p.m. Pacific Time to discuss results for the fourth quarter and full year fiscal 2016. Interested parties may join the conference call by dialing 1-844-647-5488 or 1-615-247-0258, pass-code 45077084. The call will be webcast by Thomson Reuters and can be accessed at the Marvell Investor Relations website at http://investor.marvell.com/ with a replay available following the call until August 19, 2016.

Discussion of Non-GAAP Financial Measures

Non-GAAP financial measures exclude the effect of share-based compensation expense, amortization and write-off of acquired intangible assets, acquisition-related costs, restructuring and other related charges, litigation settlement, and certain one-time expenses and benefits that are driven primarily by discrete events that management does not consider to be directly related to Marvell’s core operating performance. Non-GAAP diluted net income per share is calculated by dividing non-GAAP net income by non-GAAP weighted average shares outstanding (diluted). For purposes of calculating non-GAAP diluted net income per share, the GAAP weighted average shares outstanding (diluted) is adjusted to exclude the potential benefits of share-based compensation expected to be incurred in future periods but not yet recognized in the financial statements. The expected compensation costs are treated as proceeds assumed to be used to repurchase shares under the GAAP treasury stock method and also include the dilutive/anti-dilutive effects of common stock options and restricted stock units.

Marvell believes that the presentation of non-GAAP financial measures provides important supplemental information to management and investors regarding financial and business trends relating to Marvell’s financial condition and results of operations. While Marvell uses non-GAAP financial measures as a tool to enhance its understanding of certain aspects of its financial performance, Marvell does not consider these measures to be a substitute for, or superior to, the information provided by GAAP financial measures. Consistent with this approach, Marvell believes that disclosing non-GAAP financial measures to the readers of its financial statements provides such readers with useful supplemental data that, while not a substitute for GAAP financial measures, allows for greater transparency in the review of its financial and operational performance. For further information regarding why Marvell believes that these non-GAAP measures provide useful information to investors, the specific manner in which management uses these measures, and some of the limitations associated with the use of these measures, please refer to Marvell’s Current Report on Form 8-K filed today with the SEC. The Form 8-K is available on the SEC’s website at www.sec.gov as well as on the Marvell website in the Investor Relations section at www.marvell.com.

Forward-Looking Statements under the Private Securities Litigation Reform Act of 1995

This press release contains forward-looking statements within the meaning of the federal securities laws that involve risks and uncertainties, including: its use of non-GAAP financial measures as important supplemental information. Words such as “anticipates,” “expects,” “intends,” “plans,” “believes,” “seeks,” “estimates,” “can,” “will” and similar expressions identify such forward-looking statements. These statements are not guarantees of results and should not be considered as an indication of future activity or future performance. Actual events or results may differ materially from those described in this press release due to a number of risks and uncertainties, including, but not limited to: actions that may be taken by Marvell as a result of the Audit Committee’s investigation; adverse impacts of litigation or regulatory activities; Marvell’s ability to hire a permanent Chief Financial Officer and Chief Accounting Officer and Controller in a timely manner; Marvell’s ability to regain compliance with its SEC reporting obligations within the time of the exemption granted by NASDAQ; Marvell’s ability to compete in products and prices in an intensely competitive industry; Marvell’s reliance on the hard disk drive and mobile and wireless markets, which are highly cyclical and intensely competitive; costs and liabilities relating to current and future litigation; Marvell’s reliance on a few customers for a significant portion of its revenue; Marvell’s ability to develop and introduce new and enhanced products in a timely and cost effective manner and the adoption of those products in the market; seasonality in sales of consumer devices in which Marvell’s products are incorporated; uncertainty in the worldwide economic conditions; risks associated with manufacturing and selling a majority of Marvell’s products and Marvell’s customers’ products outside of the United States; and other risks detailed in Marvell’s SEC filings from time to time. For other factors that could cause Marvell’s results to vary from expectations, please see the risk factors identified in Marvell’s latest Annual Report on Form 10-K for the year ended January 31, 2015 and its latest Quarterly Report on Form 10-Q for the quarter ended May 2, 2015 as filed with the SEC on June 4, 2015, and other factors detailed from time to time in Marvell’s filings with the SEC. Marvell undertakes no obligation to revise or update publicly any forward-looking statements.

About Marvell

Marvell (NASDAQ: MRVL) is a global leader in providing complete silicon solutions. From storage to cloud infrastructure, Internet of Things (IoT), connectivity and multimedia, Marvell’s diverse product portfolio aligns complete platform designs with industry-leading performance, security, reliability and efficiency. At the core of the world’s most powerful consumer, network and enterprise systems, Marvell empowers partners and their customers to always stand at the forefront of innovation, performance and mass appeal. By providing people around the world with mobility and ease of access to services, adding value to their social, personal and work lives, Marvell is committed to enhancing the human experience.

As used in this release, the term “Marvell” refers to Marvell Technology Group Ltd. and its subsidiaries. For more information, please visit www.Marvell.com.

Marvell® and the Marvell logo are registered trademarks of Marvell and/or its affiliates.

Condensed Consolidated Statements of Operations

(Unaudited)

(In thousands, except per share amounts)

Marvell Technology Group Ltd.

Condensed Consolidated Balance Sheets

(Unaudited)

(In thousands)

Marvell Technology Group Ltd.

Condensed Consolidated Statements of Cash Flows

(Unaudited)

(in thousands)

Marvell Technology Group Ltd.

Reconciliations from GAAP to Non-GAAP

(Unaudited)

(In thousands, except per share amounts)