UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

(MARK ONE)

FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2016.

OR

FOR THE TRANSITION PERIOD FROM                 TO                 

COMMISSION FILE NUMBER 1-13627

GOLDEN MINERALS COMPANY

(EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

(303) 839-5060

(REGISTRANT’S TELEPHONE NUMBER, INCLUDING AREA CODE)

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 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 ☒    NO ☐

INDICATE BY CHECK MARK WHETHER THE REGISTRANT HAS SUBMITTED ELECTRONICALLY AND POSTED ON ITS CORPORATE WEB SITE, 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 ☒   NO ☐

INDICATE BY CHECK MARK WHETHER THE REGISTRANT IS A LARGE ACCELERATED FILER, AN ACCELERATED FILER, A NON-ACCELERATED FILER, OR A SMALLER REPORTING COMPANY:

INDICATE BY CHECK MARK WHETHER THE REGISTRANT IS A SHELL COMPANY (AS DEFINED IN RULE 12B-2 OF THE EXCHANGE ACT):  YES ☐       NO ☒

INDICATE BY CHECK MARK WHETHER THE REGISTRANT HAS FILED ALL DOCUMENTS AND REPORTS REQUIRED TO BE FILED BY SECTIONS 12, 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 SUBSEQUENT TO THE DISTRIBUTION OF SECURITIES UNDER A PLAN CONFIRMED BY A COURT:  YES ☒  NO ☐

AT APRIL 27, 2016, 76,690,333 SHARES OF COMMON STOCK, $0.01 PAR VALUE PER SHARE, WERE ISSUED AND OUTSTANDING.

GOLDEN MINERALS COMPANY

FORM 10-Q

QUARTER ENDED MARCH 31, 2016

INDEX

PART I. FINANCIAL INFORMATION

Item 1.Financial Statements

GOLDEN MINERALS COMPANY

CONDENSED CONSOLIDATED BALANCE SHEETS

(Expressed in United States dollars)

The accompanying notes form an integral part of these condensed consolidated financial statements.

GOLDEN MINERALS COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS

(Expressed in United States dollars)

(Unaudited)

(1)Potentially dilutive shares have not been included because to do so would be anti-dilutive.

The accompanying notes form an integral part of these condensed consolidated financial statements.

GOLDEN MINERALS COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(Expressed in United States dollars)

(Unaudited)

See Note 19 for supplemental cash flow information.

The accompanying notes form an integral part of these condensed consolidated financial statements.

GOLDEN MINERALS COMPANY

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(Expressed in United States dollars)

(Unaudited)

The accompanying notes form an integral part of these condensed consolidated financial statements.

GOLDEN MINERALS COMPANY

NOTES TO THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(Expressed in United States dollars)

(Unaudited)

1.     Basis of Preparation of Financial Statements and Nature of Operations

Golden Minerals Company (the “Company”), a Delaware corporation, has prepared these unaudited interim condensed consolidated financial statements in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”). Such rules and regulations allow the omission of certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States (“GAAP”), so long as such omissions do not render the financial statements misleading.  The year-end balance sheet data was derived from audited financial statements, but does not include all disclosures normally required by GAAP.

In the opinion of management, these financial statements reflect all adjustments that are necessary for a fair presentation of the financial results for the periods presented. These interim financial statements should be read in conjunction with the annual financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2015, and filed with the SEC on February 25, 2016.

The Company is a mining company, holding a 100% interest in the Velardeña and Chicago precious metals mining properties and associated oxide and sulfide processing plants in Mexico (the “Velardeña Properties”).  During November 2015 the Company suspended mining and sulfide processing activities at its Velardeña Properties in order to conserve the asset until the Company is able to develop mining and processing plans that at then current prices for silver and gold indicate a sustainable positive operating margin (defined as revenues less costs of sales) or the Company is able to locate, acquire and develop alternative mineral sources that could be economically mined and transported to the Velardeña Properties for processing.  The Company has placed the mine and sulfide processing plant on care and maintenance to enable a re-start of either the mine or mill when mining and processing plans and metals prices support a cash positive outlook.  The Company incurred approximately $1.2 million in related costs for employee severance, net working capital obligations, and other shutdown expenditures to place the property on care and maintenance in the fourth quarter 2015 and $0.6 million in shutdown and care and maintenance costs in the first quarter 2016 and expects to incur approximately $0.3 million in quarterly holding costs while mining and processing remain suspended.  The Company has retained a core group of employees, most of whom have been assigned to operate the oxide plant, which is leased to a third party and not affected by the shutdown.  The oxide plant began processing material in December 2015, and the Company expects to receive net cash flow under the lease of between $4.0 and $5.0 million in 2016.  The retained employees also include an exploration group and an operations and administrative group to continue to advance the Company’s plans in Mexico, oversee corporate compliance activities, and to maintain and safeguard the longer term value of the Velardeña assets.

The Company remains focused on evaluating and searching for mining opportunities in North America (including Mexico) with near term prospects of mining, and particularly for properties within reasonable haulage distances of our Velardeña Properties in order to generate sufficient revenue to fund continuing business activities. These assets may include the Santa Maria Mine located in the Parral District in Chihuahua State, the Santa Rosa vein, located in the San Luis del Cordero District in Durango, or the Rodeo property located west of the Velardeña Properties in Durango.  The Company is continuing its exploration efforts on selected properties in its portfolio of approximately 10 exploration properties located primarily in Mexico. It continues to hold its El Quevar advanced exploration property in Argentina on care and maintenance until it can find a partner to further advance the project. The Company is also reviewing strategic opportunities, focusing primarily on development or operating properties in North America, including Mexico.

The Company is considered an exploration stage company under the criteria set forth by the SEC as the Company has not yet demonstrated the existence of proven or probable mineral reserves, as defined by SEC Industry Guide 7, at the Velardeña Properties, or any of the Company’s other properties.  As a result, and in accordance with GAAP for exploration stage companies, all expenditures for exploration and evaluation of the Company’s properties are expensed as incurred. As such the Company’s financial statements may not be comparable to the financial statements of mining companies that do have proven and probable mineral reserves.  Such companies would typically capitalize certain development costs including infrastructure development and mining activities to access the ore. The capitalized costs would be amortized on a units-of-production basis as reserves are mined.  The amortized costs are typically allocated to inventory and eventually to cost of sales as the inventories are sold.  As the Company does not have proven and probable reserves, substantially all

expenditures at the Company’s Velardeña Properties for mine construction activity, as well as costs associated with the mill facilities, and for items that do not have a readily identifiable market value apart from the mineralized material, have been expensed as incurred. Such costs are charged to cost of metals sold or project expense during the period depending on the nature of the costs. Certain of the costs may be reflected in inventories prior to the sale of the product. The term “mineralized material” as used herein, although permissible under SEC Industry Guide 7, does not indicate “reserves” by SEC standards. The Company cannot be certain that any deposits at the Velardeña Properties or any other exploration property will ever be confirmed or converted into SEC Industry Guide 7 compliant “reserves”.

2.     Liquidity, Capital Resources and Going Concern

At March 31, 2016 the Company’s aggregate cash and cash equivalents totaled $2.1 million, $2.0 million lower than the $4.1 million in similar assets held at December 31, 2015. The reduction is due primarily to $0.6  million in shutdown and care and maintenance costs at the Velardeña Properties, $0.8 million in exploration expenditures, including costs related to drilling at the San Luis del Cordero property, $0.2 million in care and maintenance and property holding costs at the El Quevar project, $1.2 million in general and administrative expenses, and a $0.2 million increase in net working capital primarily due to a reduction in deferred revenue from the lease of the oxide plant, offset in part by $1.0 million of net operating margin received pursuant to the lease (defined as oxide plant lease revenue less oxide plant lease costs).

In addition to its $2.1 million cash balance at March 31, 2016, the Company expects to receive approximately $3.6 million in net operating margin from the lease of the oxide plant during the remaining three quarters of 2016. The Company currently plans to spend approximately $5.7 million in the remaining three quarters of 2016, as detailed below, resulting in a projected zero cash balance at the end of 2016.  In addition, the Company is required to pay the remaining approximately $1.2 million principal and interest to Sentient Global Resources Fund IV, LP. (“Sentient”) on the October 27, 2016 maturity date of a Senior Secured Convertible Note (the “Sentient Note”) if Sentient does not convert these amounts to the Company’s common stock as permitted under the Sentient Note. On February 11, 2016, Sentient converted approximately $3.9 million of principal and $0.1 million of accrued interest (representing the total amount of accrued interest at the conversion date) into 23,355,000 shares of the Company’s common stock. See Note 11 for a full discussion of the Sentient Note.

Even if Sentient converts the remaining principal and interest under the Sentient Note to the Company’s common stock, the Company does not currently expect that it will have sufficient cash to continue its business plan into 2017 without external funding.  The Company plans, and is required by the Sentient loan, to seek external funding through the sale of equity or securities convertible into equity.  There can be no assurance that the Company will be successful in obtaining sufficient external funding on terms acceptable to the Company or at all.  If the Company is not successful in obtaining sufficient external funding, the Company expects to reduce its planned 2016 expenditures.

The Company plans to spend the following amounts totaling approximately $5.7 million during the remaining three quarters of 2016.

The actual amount that the Company spends during the remainder of 2016 and the projected yearend cash balance may vary significantly from the amounts specified above and will depend on a number of factors, whether Sentient converts

the remaining principal and interest due on the Sentient Note to the Company’s common stock, whether the Company is successful in raising external funding and the amount of such funding, including variations from anticipated care and maintenance costs at the Velardeña Properties and costs for continued exploration, project assessment, and development at the Company’s other exploration properties, including San Luis del Cordero.

The consolidated financial statements have been prepared on a going concern basis under which an entity is considered to be able to realize its assets and satisfy its liabilities in the normal course of business.  However, the continuing operations of the Company are dependent upon its ability to secure sufficient funding and to generate future profitable operations.  The underlying value and recoverability of the amounts shown as property, plant and equipment in Note 8 are dependent on the ability of the Company to generate positive cash flows from operations and to continue to fund exploration and development activities that would lead to profitable mining activities or to generate proceeds from the disposition of property, plant and equipment.  There can be no assurance that the Company will be successful in generating future profitable operations or securing additional funding in the future on terms acceptable to the Company or at all.  These material uncertainties, including repayment of the remaining Sentient Loan, may cast significant doubt on the Company’s ability to continue as a going concern.  These consolidated financial statements do not include any adjustments relating to the recoverability and classification of recorded assets or liabilities which might be necessary should the Company not continue as a going concern.

3.     New Accounting Pronouncements

In March 2016, the Financial Accounting Standards Board (“FASB) issued Accounting Standards Update (“ASU”) 2016-09, “Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting” (“ASU 2016-09”), which simplifies several aspects of the accounting for share-based payment award transactions including accounting for income taxes and classification of excess tax benefits on the statement of cash flows, forfeitures and minimum statutory tax withholding requirements.  For the Company, the amendments in this Update are effective for annual periods beginning after December 15, 2016, and interim periods within those annual periods. Early adoption is permitted for any interim or annual period. The adoption of this update is not expected to have a material impact on the Company’s consolidated financial position or results of operations.

In March 2016, the FASB issued ASU 2016-08,  “Revenue from Contracts with Customers (Topic 606): Principal versus Agent Considerations (Reporting Revenue Gross versus Net)” (“ASU 2016-09”) which clarifies principal versus agent when another party, along with the entity, is involved in providing a good or service to a customer. Topic 606, Revenue from Contracts with Customers requires an entity to determine whether the nature of its promise is to provide that good or service to the customer (i.e., the entity is a principal) or to arrange for the good or service to be provided to the customer by the other party (i.e., the entity is an agent). For the Company, ASU 2016-08 is effective for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The adoption of this update is not expected to have a material impact on the Company’s consolidated financial position or results of operations.

In January 2016, the FASB issued ASU No. 2016-01, “Recognition and Measurement of Financial Assets and Financial Liabilities” (“ASU 2016-01”) which amended its standards related to the accounting of certain financial instruments. This amendment addresses certain aspects of recognition, measurement, presentation and disclosure. The new rules will become effective for annual and interim periods beginning after December 15, 2017. Early adoption is not permitted. We are in the process of evaluating the impact the amendment will have on our consolidated financial position or results of operations.

In November 2015, the FASB issued ASU No. 2015-17, “Income Taxes: Balance Sheet Classification of Deferred Taxes” (“ASU 2015-17”). ASU 2015-17 requires that deferred tax assets and liabilities be classified as noncurrent on the balance sheet. This update is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016. The adoption of this update is not expected to have a material impact on the Company’s consolidated financial position or results of operations.

In July 2015, the FASB issued ASU No. 2015-11, “Inventory, Simplifying the Measurement of Inventory” (“ASU 2015-11”). ASU 2015-11 affects reporting entities that measure inventory using first-in, first-out or average cost. ASU 2015-11 requires that inventory be measured at the lower of cost and net realizable value. Net realizable value is the estimated selling price in the ordinary course of business, less reasonably predictable costs of completion, disposal, and

transportation. ASU 2015-11 is effective for annual periods beginning after December 15, 2016, with early adoption permitted. The adoption of ASU 2015-11 is not expected to have a material impact on the consolidated financial position or results of operations.

On August 27, 2014, the FASB issued ASU No. 2014-15, “Presentation of Financial Statements - Going Concern (Subtopic 205-40), Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern” (“ASU 2014-15”).  ASU 2014-15 will require management to evaluate whether there are conditions and events that raise substantial doubt about the Company’s ability to continue as a going concern within one year after the financial statements are issued on both an interim and annual basis. Management will be required to provide certain footnote disclosures if it concludes that substantial doubt exists or when its plans alleviate substantial doubt about the Company’s ability to continue as a going concern. ASU 2014-15 becomes effective for annual periods beginning in 2016 and for interim reporting periods starting in the first quarter of 2017. The Company does not expect the adoption of this update to have a material impact on its consolidated financial position or results of operations.

In May 2014, FASB and the International Accounting Standards Board issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”). ASU 2014-09 outlines a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers and supersedes most current revenue recognition guidance, including industry-specific guidance. In addition, the guidance requires improved disclosures to help users of financial statements better understand the nature, amount, timing and uncertainty of revenue that is recognized and the related cash flows. ASU 2014-09 is effective for interim and annual periods beginning after December 15, 2017; early adoption is not permitted. The Company is evaluating the financial statement implications of adopting ASU 2014-09 but does not believe adoption of ASU 2014-09 will have a material impact on its consolidated financial position or results of operations.

4.     Cash and Cash Equivalents and Short-term Investments

The Company considers all highly liquid investments with a maturity of three months or less when purchased to be cash equivalents. Short-term investments include investments with maturities greater than three months, but not exceeding 12 months, or highly liquid investments with maturities greater than 12 months that the Company intends to liquidate during the next 12 months for working capital needs.

The Company determines the appropriate classification of its investments in equity securities at the time of acquisition and re-evaluates those classifications at each balance sheet date.  Available for sale investments are marked to market at each reporting period with changes in fair value recorded as a component of other comprehensive income (loss). If declines in fair value are deemed other than temporary, a charge is made to net income (loss) for the period.

The following tables summarize the Company’s short-term investments at March 31, 2016 and December 31, 2015:

The available for sale common stock consists of 5,000,000 shares of a junior mining company received during the first quarter 2015 in a transaction involving the Company’s 50% interest in the San Diego exploration property in Mexico.  The Company received shares in the junior mining company that holds the other 50% interest in the property in exchange for extending by two years from March 24, 2015 the period of time in which the junior mining company can earn an

additional 10% interest in the property by completing an additional $0.8 million of exploration work.  Following the receipt of the shares the Company owns approximately 9% of the outstanding shares of the junior mining company.   The extension agreement was executed on March 23, 2015 and the value of shares on that date was recorded by the Company as a short-term investment using quoted market prices.  See Note 13 for further discussion on the fair value measurement techniques used by the Company to value the above investments.

5.     Prepaid Expenses and Other Assets

Prepaid expenses and other current assets consist of the following:

The prepaid contractor fees and vendor advances consist of advance payments made to contractors and suppliers primarily at the Company’s Velardeña Properties in Mexico.

6.     Inventories

Inventories at the Velardeña Properties at March 31, 2016 and December 31, 2015 consist of the following:

The Company had no metals or in process inventories at March 31, 2016 or December 31, 2015 as the result of the suspension of mining and processing at the Velardeña Properties (see Note 1). The material and supplies inventory at March 31, 2016 and December 31, 2015 is reduced by a $0.3 million obsolescence charge reflected in shutdown costs.

7.     Value Added Tax Receivable, Net

The Company has recorded VAT paid in Mexico and related to the Velardeña Properties as a recoverable asset. Mexico law allows for certain VAT payments to be recovered through ongoing applications for refunds. The Company expects that the current amounts will be recovered within a one year period.

The Company has also paid VAT in Mexico as well as other countries, primarily related to exploration projects, which has been charged to expense as incurred because of the uncertainty of recoverability.

8.     Property, Plant and Equipment, Net

The components of property, plant and equipment are as follows:

The asset retirement cost (“ARC”) is all related to the Company’s Velardeña Properties. The decrease in the ARC during the period is related to an adjustment to the asset retirement obligation (“ARO”), as discussed below in Note 10.

9.     Accounts Payable and Other Accrued Liabilities

The Company’s accounts payable and other accrued liabilities consist of the following:

March 31, 2016

Accounts payable and accruals at March 31, 2016 are primarily related to amounts due to contractors and suppliers in the amounts of $0.5 million and $0.2 million related to the Company’s Velardeña Properties and corporate administrative activities, respectively.  In the case of the Velardeña Properties, amounts due also include a VAT payable that is not an offset to the VAT receivable.

Accrued employee compensation and benefits at March 31, 2016 consist of $0.1 million of accrued vacation payable and $0.4 million related to withholding taxes and benefits payable, of which $0.2 million is related to activities at the Velardeña Properties.

December 31, 2015

Accounts payable and accruals at December 31, 2015 consist primarily of $0.3 million due to contractors and suppliers and $0.3 million related to the Company’s Velardeña Properties and corporate administrative activities, respectively.  In the case of the Velardeña Properties, amounts due also include a VAT payable that is not an offset to the VAT receivable.

Accrued employee compensation and benefits at December 31, 2015 consist of $0.1 million of accrued vacation payable and $0.4 million related to withholding taxes and benefits payable, of which $0.2 million is related to activities at the Velardeña Properties.

10.     Asset Retirement Obligations

The Company retained the services of a mining engineering firm to prepare a detailed closure plan for the Velardeña Properties. The plan was completed during the second quarter 2012 and indicated that the Company had an ARO and offsetting ARC of approximately $1.9 million. The estimated $3.5 million ARO and ARC that was recorded at the time of the acquisition of the Velardeña Properties was adjusted accordingly.

The Company will continue to accrue additional estimated ARO amounts based on an asset retirement plan as activities requiring future reclamation and remediation occur.  During the first three months of 2016 the Company recognized approximately $0.1 million of accretion expense and approximately $20,000 of amortization expense related to the ARC.

The following table summarizes activity in the Velardeña Properties ARO:

The decreases in the ARO recorded during the 2016 and 2015 periods are the result of changes in assumptions related to inflation factors and the timing of future expenditures used in the determination of future cash flows.

The ARO set forth on the accompanying Condensed Consolidated Balance Sheets at March 31, 2016 and December 31, 2015 includes approximately $0.1 million of reclamation liabilities related to activities at the El Quevar project in Argentina.

11.     Convertible Note Payable, Net

On October 27, 2015, the Company borrowed $5.0 million from Sentient, pursuant to the terms of the Sentient Note and a related loan agreement (the "Sentient Loan"), with principal and accrued interest due on October 27, 2016. To comply with security regulations and stock exchange rules in the United States and Canada, the Company received stockholder approval on January 19, 2016 to allow the Sentient Note principal and accrued interest to be converted, solely at Sentient's option, into shares of the Company's common stock at a price equal to the lowest of: 1) $0.29, 90 percent of the 15-day volume weighted average price ("VWAP") for the period immediately preceding the Loan closing date, 2) 90 percent of the 15-day VWAP for the period immediately preceding the loan conversion date, or 3) an anti-dilution adjusted price based on the lowest price for which the Company has sold its stock following the loan closing date. The loan bears interest at a rate of 9.0% per annum, compounded monthly.

The beneficial conversion feature of the Sentient Note represents an embedded derivative as defined by ASC 815 "Derivatives and Hedging" ("ASC 815"). ASC 815 provides that a derivative instrument's fair value must be bifurcated from the note and separately recorded on the Company's Consolidated Balance Sheet.  The Company used a third party consultant to value the embedded derivative in the Sentient Note employing a Monte Carlo type probability analysis, which falls within Level 3 of the fair value hierarchy (see Note 13). For purposes of valuing the embedded derivative as of the Sentient Loan closing date, at December 31, 2015, at February 11, 2016 (conversion date), and at March 31, 2016 the valuation model takes into account, among other items: 1) the probability of successfully achieving stockholder approval of the Sentient Notes’ conversion feature, 2) future variations in the Company’s stock price, and 3) the probability of entering into an equity transaction prior to the Sentient Loan maturity date that would lower the conversion price.  It was determined that the embedded derivative had a fair value of approximately $1.1 million at October 27, 2015, the date the Company entered into the Sentient Loan.  Subsequent mark-to-market changes in the value of the derivative are recorded as income or loss in the Consolidated Statements of Operations and Comprehensive Loss.  The Sentient Note was recorded net of the bifurcated embedded derivative at October 27, 2015 with the $1.1 million difference between the face value and the recorded value of the note representing a loan discount that is being amortized to interest expense over the life of the loan using the effective interest method. 

The Company also incurred approximately $0.3 million in legal and other costs associated with the Sentient Loan. Per the guidance of ASU 2015-03 the loan costs are presented as a reduction to the note payable on the accompanying Consolidated Balance Sheets and will be amortized to interest expense over the life of the Sentient Note using the interest rate method.

Because the Sentient Loan has been recorded net of the bifurcated embedded derivative and loan costs, both of which will be amortized to interest expense over the life of the loan, the effective rate of interest on the recorded loan obligation is higher than the stated nominal rate of interest. The effective interest rate on the Sentient Note is approximately 36%, compounded monthly, compared to the stated nominal rate of 9% per annum, compounded monthly.

On February 11, 2016, Sentient converted approximately $3.9 million of principal and $0.1 million of accrued interest (representing the total amount of accrued interest at the conversion date) on the Sentient Note into 23,355,000 shares of the Company's common stock at an exercise price of approximately $0.172 per share, equal to 90% of the 15-day VWAP immediately preceding the conversion date (the “Conversion”). Following the Conversion, approximately $1.1 million of principal remained outstanding on the Sentient Note. If the remaining principal and additional accrued interest from February 11, 2016 is not converted into the Company's common stock, the Company would owe approximately $1.2 million to Sentient on the October 27, 2016 maturity date.

The Company adjusted the recorded value of the Sentient Loan as of the Conversion date to reflect the amortization of the loan discount and loan costs, shown as interest expense in the Consolidated Statements of Operations and Comprehensive Loss. The Company then recorded a loss on debt extinguishment of $2.2 million reflecting the difference between the value of the shares issued to Sentient as a result of the Conversion and the portion of the recorded value of the Sentient Loan, including related loan costs and loan discount that was converted. The Company also determined that the value of the embedded derivative at February 11, 2016, the date of the Conversion, was $0.6 million. The mark-to-market increase in the value of the derivative, as compared to its value at December 31, 2015, was recorded as a derivative loss in the Consolidated Statements of Operations and Comprehensive Loss. Following the mark-to market adjustment, $0.5 million, reflecting the portion of the derivative value eliminated as a result of the Conversion, was offset against the loss on debt extinguishment described above, resulting in a net loss on debt extinguishment related to the Conversion of $1.7 million.  The loss on debt extinguishment has been recorded as a separate line item in the Consolidated Statements of Operations and Comprehensive Loss.

Following the Conversion date and through the end of the first quarter 2016 the Company recorded additional amortization of the loan costs and discount related to the remaining Sentient Loan, shown as interest expense in the Consolidated Statements of Operations and Comprehensive Loss. At March 31, 2016 approximately $41,000 of unamortized loan costs and $136,000 of unamortized loan discount remains. 

The remaining embedded derivative related to the Sentient Note was determined to have a fair value of $0.7 million at March 31, 2016 (see note 13), resulting in a total mark-to-market derivative loss for the first quarter 2016 of $0.6 million, recorded on a separate line in the Consolidated Statements of Operations and Comprehensive Loss.

12.     Other Liabilities

The Company recorded other current liabilities of approximately $0.3 million and $0.6 million at March 31, 2016 and December 31, 2015, respectively.  The March 31, 2016 and December 31, 2015 amounts include a net liability of approximately $0.3 million and $0.4 million respectively related to the Argentina tax on equity due for years 2009 through 2012 stemming from a tax audit of those years.  For March 31, 2016 the amount includes $0.1 million in taxes and $0.2 million in estimated interest and penalties.  The $0.1 million in net taxes due will be paid ratably over a four month period ending July 31, 2016.  The Company is awaiting the final assessment of interest and penalties, estimated to be approximately $0.2 million, payable immediately upon final assessment, which is expected by the end of the second quarter 2016.  The December 31, 2015 amount also includes $0.1 million of accrued interest on the Sentient Loan and $0.1 million as a loss contingency on a disputed contract with a third party contractor in Mexico.  The dispute was settled during the first quarter 2016 for the amount previously accrued.

13.     Fair Value Measurements

Financial assets and liabilities and nonfinancial assets and liabilities are measured at fair value under a framework of a fair value hierarchy which prioritizes the inputs into valuation techniques used to measure fair value into three broad levels.  This hierarchy gives the highest priority to quoted prices (unadjusted) in active markets and the lowest priority to unobservable inputs.  Further, financial assets and liabilities should be classified by level in their entirety based upon the lowest level of input that was significant to the fair value measurement.  The three levels of the fair value hierarchy per ASC 820 are as follows:

Level 1:  Unadjusted quoted market prices in active markets for identical assets or liabilities that are accessible at the measurement date.

Level 2:  Quoted prices in inactive markets for identical assets or liabilities, quoted prices for similar assets or liabilities in active markets, or other observable inputs either directly related to the asset or liability or derived principally from corroborated observable market data.

Level 3:  Unobservable inputs due to the fact that there is little or no market activity. This entails using assumptions in models which estimate what market participants would use in pricing the asset or liability.

The following table summarizes the Company’s financial assets and liabilities at fair value on a recurring basis at March 31, 2016 and December 31, 2015, by respective level of the fair value hierarchy:

The Company’s cash equivalents, comprised principally of U.S. treasury securities, are classified within Level 1 of the fair value hierarchy.

The Company’s trade accounts receivable are classified within Level 1 of the fair value hierarchy, are related to the sale of metals at our Velardeña Properties and the oxide plant lease and are valued at published metals prices per the terms of the refining and smelting agreements and lease rates per the plant lease agreement.

At March 31, 2016 and December 31, 2015, the Company recorded a liability for warrants to acquire the Company’s stock as a result of anti-dilution clauses in the warrant agreements that could result in a resetting of the warrant exercise price in the event the Company were to issue additional shares of its common stock in a future transaction at a price lower than the current exercise price of the warrants (see Note 15). The Company assesses the fair value of its warrant liability at the end of each reporting period, with changes in the value recorded as a separate line item on the Company’s Condensed Consolidated Statements of Operations and Comprehensive Loss. The valuation policies are approved by the Chief Financial Officer who reviews and approves the inputs used in the fair value calculations and the changes in fair value measurements from period to period for reasonableness. Fair value measurements are discussed with the Company’s Chief Executive Officer, as deemed appropriate.  The warrant liability has been recorded at fair value as of March 31, 2016 and December 31, 2015 based primarily on a valuation performed by a third party expert using a Monte Carlo simulation, which falls within Level 3 of the fair value hierarchy.  The valuation model takes into account the probability that the Company could issue additional shares in a future transaction at a lower price than the current exercise price of the warrants.

The beneficial conversion feature of the Sentient Note represents an embedded derivative as defined by ASC 815 (see Note 11). ASC 815 provides that a derivative instrument’s fair value must be bifurcated from the host contract and separately recorded on the Company’s Consolidated Balance Sheets.  At March 31, 2016 and December 31, 2015 the Company had recorded a derivative liability related to the beneficial conversion feature of the Sentient Note.  The Company assesses the fair value of the derivative liability at the end of each reporting period, with changes in the value recorded as a separate line item on the Company’s Condensed Consolidated Statements of Operations and Comprehensive Loss. The valuation policies are approved by the Chief Financial Officer who reviews and approves the inputs used in the fair value calculations and the changes in fair value measurements from period to period for reasonableness. Fair value measurements are discussed with the Company’s Chief Executive Officer, as deemed appropriate. The derivative liability has been recorded at fair value as of March 31, 2016 and December 31, 2015 based primarily on a valuation performed by a third party expert using a Monte Carlo simulation, which falls within Level 3 of the fair value hierarchy. The valuation model takes into account, among other items: 1) the probability of successfully achieving stockholder approval of the loan’s conversion feature, 2) future variations in the Company’s stock price, and 3) the probability of entering into an equity transaction prior to the Loan maturity date that would lower the conversion price.

In addition to the warrant exercise prices (see Note 15) and Sentient Note conversion price (see Note 11) other significant inputs to the warrant valuation model and derivative valuation model included the following as applicable:

An increase or decrease in the Company’s stock price, in isolation, would result in a relatively lower or higher fair value measurement respectively.  A decrease in the probability of the issuance of additional common stock at a lower price than the current warrant exercise price would result in a lower value for the warrants.  The table below highlights the change in fair value of the warrant and derivative liabilities.

Non-recurring Fair Value Measurements

There were no non-recurring fair value measurements at March 31, 2016.

14.     Income Taxes

The Company accounts for income taxes in accordance with the provisions of ASC 740, “Income Taxes” (“ASC 740”), on a tax jurisdictional basis.  For the three months ended March 31, 2016 the Company had no income tax benefit or expense.  The Company operates in jurisdictions that have generated ordinary losses on a year-to-date basis, however, the Company is unable to recognize a benefit for those losses, thus an estimated effective tax rate has not been used to report the year-to-date results.   

In accordance with ASC 740, the Company presents deferred tax assets net of its deferred tax liabilities on a tax jurisdictional basis on its Condensed Consolidated Balance Sheets.  As of March 31, 2016 and as of December 31, 2015, the Company had no net deferred tax assets or net deferred tax liabilities reported on its balance sheet.   

The Company, a Delaware corporation, and its subsidiaries file tax returns in the United States and in various foreign jurisdictions.  The tax rules and regulations in these countries are highly complex and subject to interpretation. The Company’s income tax returns are subject to examination by the relevant taxing authorities and in connection with such examinations, disputes can arise with the taxing authorities over the interpretation or application of certain tax rules within the country involved.  In accordance with ASC 740, the Company identifies and evaluates uncertain tax positions, and recognizes the impact of uncertain tax positions for which there is less than a more-likely-than-not probability of the position being upheld upon review by the relevant taxing authority.  Such positions are deemed to be “unrecognized tax benefits” which require additional disclosure and recognition of a liability within the financial statements.  The Company had no unrecognized tax benefits at March 31, 2016 or December 31, 2015.

15.     Equity

Sentient Note conversion

On February 11, 2016, Sentient converted approximately $3.9 million of principal and $0.1 million of accrued interest (representing the total amount of accrued interest at the conversion date) pursuant to the Sentient Note into 23,355,000 shares of the Company's common stock at an exercise price of approximately $0.172 per share, reflecting 90% of the 15-day VWAP immediately preceding the conversion date (see Note 11).

Equity Incentive Plans

In May 2014, the Company’s stockholders approved amendments to the Company’s 2009 Equity Incentive Plan, adopting the Amended and Restated 2009 Equity Incentive Plan (the “Equity Plan”) pursuant to which awards of the Company’s common stock may be made to officers, directors, employees, consultants and agents of the Company and its subsidiaries.  The Company recognizes stock-based compensation costs using a graded vesting attribution method whereby costs are recognized over the requisite service period for each separately vesting portion of the award.

The following table summarizes the status of the Company’s restricted stock grants issued under the Equity Plan at March 31, 2016 and the changes during the three months then ended:

Restrictions were lifted on 834 shares during the three months ended March 31, 2016 according to the terms of grants made to an employee in prior years. 

For the three months ended March 31, 2016 the Company recognized approximately $2,000 of compensation expense related to the restricted stock grants.  The Company expects to recognize additional compensation expense related to these awards of approximately $5,000 over the next nine months.

The following table summarizes the status of the Company’s stock option grants issued under the Equity Plan at March 31, 2016 and the changes during the three months then ended:

Also, pursuant to the Equity Plan, the Company’s Board of Directors adopted the Non-Employee Director’s Deferred Compensation and Equity Award Plan (the “Deferred Compensation Plan”).  Pursuant to the Deferred Compensation Plan the non-employee directors receive a portion of their compensation in the form of Restricted Stock Units (“RSUs”) issued under the Equity Plan. The RSUs vest on the first anniversary of the grant and each vested RSU entitles the director to receive one unrestricted share of common stock upon the termination of the director’s board service.

The following table summarizes the status of the RSU grants issued under the Deferred Compensation Plan at March 31, 2016 and the changes during the three months then ended:

For the three months ended March 31, 2016 the Company recognized approximately $31,000 of compensation expense related to the RSU grants.  The Company expects to recognize additional compensation expense related to the RSU grants of approximately $10,000 over the next 3 months.

Key Employee Long-Term Incentive Plan

In December 2013, the Board of Directors of the Company approved and the Company adopted the 2013 Key Employee Long-Term Incentive Plan (the “KELTIP”), which became effective immediately. The KELTIP provides for the grant of units (“KELTIP Units”) to certain officers and key employees of the Company, which units will, once vested, entitle such officers and employees to receive an amount, in cash or in Company common stock issued pursuant to the Company’s Amended and Restated 2009 Equity Incentive Plan, measured generally by the price of the Company’s common stock on the settlement date. KELTIP Units are not an actual equity interest in the Company and are solely unfunded and unsecured obligations of the Company that are not transferable and do not provide the holder with any stockholder rights. Payment of the settlement amount of vested KELTIP Units is deferred generally until the earlier of a change of control of the Company or the date the grantee ceases to serve as an officer or employee of the Company.  The KELTIP Units are recorded as a liability. At March 31, 2016 and December 31, 2015 there were no KELTIP Units outstanding.

Common stock warrants

The following table summarizes the status of the Company’s common stock warrants at March 31, 2016 and the changes during the three months then ended:

The warrants relate to prior registered offerings and private placements of the Company’s stock.  In September 2012, the Company closed on a registered offering and concurrent private placement with Sentient in which it sold units, consisting of one share of common stock and a five-year warrant to acquire one half of a share of common stock at an exercise price of $8.42 per share. Pursuant to certain dilution adjustment provisions in the warrant agreement governing the September 2012 warrants, the number of shares of common stock issuable upon exercise of the September 2012 warrants was increased from 3,431,649 shares to 4,031,409 shares (599,760 share increase) and the exercise price was reduced from $8.42 per share to $7.17 per share pursuant to a weighted average dilution calculation based on the pricing of the September 2014 Offering and the Private Placement.

In September 2014 the Company closed on a registered public offering and concurrent private placement with Sentient in which it sold units, consisting of one share of common stock and a five-year warrant to acquire one half of a share of common stock at an exercise price of $1.21 per share.  A total of 4,746,000 warrants were issued that became exercisable on March 11, 2015 and will expire on September 10, 2019, five years from the date of issuance.

The warrants issued in September 2012 and September 2014 are being recorded as a liability on the balance sheet as a result of anti-dilution clauses in the warrant agreements that could result in a resetting of the warrant exercise price in the event the Company were to issue additional shares of its common stock in a future transaction at an offering price lower than the current exercise price of the warrants. 

Pursuant to the anti-dilution clauses in the September 2012 and 2014 warrant agreements, the exercise price of the warrants was adjusted downward as a result of stockholder approval of the convertibility of the Sentient Note.  At January 19, 2016, the date of the stockholders’ approval, the conversion price determinable for the Sentient Note, pursuant to the terms of the Sentient Note, was $0.29, a price equal to 90 percent of the 15-day VWAP for the period immediately preceding the loan closing date of October 27, 2015.  As a result, effective January 19, 2016, the number of shares of common stock issuable upon exercise of the September 2012 Warrants was increased from 4,031,409 shares to 5,084,193 shares (1,052,784 share increase) and the exercise price was reduced from $7.17 per share to $5.68 per share.  The number of shares of common stock issuable upon exercise of the September 2014 Warrants was increased from 4,746,000 shares to 5,108,347 shares (362,347 share increase) and the exercise price was reduced from $1.21 per share to $1.01 per share.

As a result of the Sentient Note conversion on February 11, 2016, the number of shares of common stock issuable upon exercise of the September 2012 Warrants was increased pursuant to applicable anti-dilution provisions from 5,084,193 shares to 5,677,757 shares (593,564 share increase) and the exercise price was reduced from $5.68 per share to $5.09 per share.  The number of shares of common stock issuable upon exercise of the September 2014 Warrants was increased from 5,108,347 shares to 5,365,983 shares (257,636 share increase) and the exercise price was reduced from $1.01 per share to $0.91 per share.

At March 31, 2016 the total liability recorded for the warrants was $1.4 million, consisting of $1.2 million for the 2014 warrants and $0.2 million for the 2012 warrants.  The warrant liability has been recorded at fair value as of

March 31, 2016 based primarily on a valuation performed by a third party expert using a Monte Carlo simulation, which falls within Level 3 of the fair value hierarchy (see Note 13).

16.     Revenue and Related Costs

Oxide Plant Lease and Oxide Plant Lease Costs

For the three months ended March 31, 2016 the Company recorded revenue of approximately $1.5 million and related costs of approximately $0.5 million associated with the lease of the Velardeña Properties oxide plant. The Company recognizes oxide plant lease fees and reimbursements for labor, utility and other costs as "Revenue from Oxide plant lease" in the Consolidated Statements of Operations and Comprehensive Loss following the guidance of ASC 605 regarding "income statement characterization of reimbursements received for "out-of-pocket" expenses incurred" and "reporting revenue gross as a principal versus net as an agent". ASC 605 supports recording as gross revenue fees received for the reimbursement of expenses in situations where the recipient is the primary obligor and has certain discretion in the incurrence of the reimbursable expense. The actual costs incurred for reimbursed direct labor and utility costs are reported as "Oxide plant lease costs" in the statement of operations. The Company recognizes lease fees during the period the fees are earned per the terms of the lease.

In addition, the Company had received an advance lease payment of $0.5 million during 2015 that is being applied to the lease amounts due during the first four months of 2016. At March 31, 2016 and December 31, 2015 the advance payment balance was recorded as deferred revenue in the amounts of $0.1 million and $0.5 million respectively, on the accompanying Consolidated Balance Sheets.

For the three months ended March 31, 2015 the Company had no plant lease revenue or plant lease costs.

Sale of Metals and Cost of Metals Sold

For the three months ended March 31, 2016 the Company had no sale of metals or cost of metals sold as a result of the suspension of operations at the Velardeña Properties in November 2015.

During the three months ended March 31, 2015 the Company sold marketable lead and zinc concentrates from its Velardeña Properties to a single customer.  Under the terms of the Company’s agreement with its concentrates customer, title passed when a provisional payment was made, which occurred generally after the product was shipped and customary sales documents were completed.  Costs related to the sale of metals products include direct and indirect costs incurred to mine, process and market the products.  At March 31, 2015 the Company had written down its metals and in-process inventories to net realizable value including a charge to the cost of metals sold of approximately $0.1 million.

17.     Interest and Other Income

For the three months ended March 31, 2016 the Company had only a nominal amount of interest and other income.  For the three months ended March 31, 2015 the Company reported interest and other income of $0.9 million related primarily to the reduction of a loss contingency liability related to foreign withholding taxes that the government could assert are owed by the Company, acting as withholding agent, on certain interest payments made to a third lender.

18.     Derivative Loss

During the three months ended March 31, 2016 the Company recorded approximately $1.2 million of warrant derivative loss related to an increase in the fair value of the liability recorded for warrants to acquire the Company’s common stock (see Note 15).  During the three months ended March 31, 2015 the Company recorded approximately $0.7 million of warrant derivative income related to a decrease in the fair value of the liability recorded for the warrants. The warrant liability has been recorded at fair value as of March 31, 2016 and 2015 based primarily on a valuation performed by a third party expert using a Monte Carlo simulation, which falls within Level 3 of the fair value hierarchy (see Note 13).  The valuation model takes into account the probability that the Company could issue additional shares in a future transaction at a lower price than the current exercise price of the warrants.  Significant inputs to the valuation model included prices for the warrants disclosed above, the probability of an additional issuance of the Company’s common stock at a lower price than the current warrant exercise price and the inputs in the table below for the respective periods.

During the three months ended March 31, 2016 the Company recorded approximately $0.6 million of derivative loss related to an increase in the fair value of the derivative liability related to the Sentient Loan (see Note 11). The derivative liability has been recorded at fair value as of March 31, 2016 based primarily on a valuation performed by a third party expert using a Monte Carlo simulation, which falls within Level 3 of the fair value hierarchy (see Note 13).  Significant inputs to the valuation model included: 1) the probability of successfully achieving stockholder approval of the loan’s conversion feature, 2) future variations in the Company’s stock price, and 3) the probability of entering into an equity transaction prior to the loan maturity date that would lower the conversion price.

19.     Supplemental Cash Flow Information

The following table reconciles net loss for the period to cash used in operations: