Filing Details

CUSIP No. 381119106

Page 2 of 15

1.	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Sentient Global Resources Fund III, L.P.
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) x (b) o
3.	SEC USE ONLY
4.	SOURCE OF FUNDS (See Instructions) OO
5.	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:		7.	SOLE VOTING POWER 3,582,746
		8.	SHARED VOTING POWER 0
		9.	SOLE DISPOSITIVE POWER 3,582,746
		10.	SHARED DISPOSITIVE POWER 0
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,582,746
12.	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES ¨
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 3.21%
14.	TYPE OF REPORTING PERSON PN

CUSIP No. 381119106

Page 3 of 15

1.	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) SGRF III Parallel I, L.P.
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) x (b) o
3.	SEC USE ONLY
4.	SOURCE OF FUNDS (See Instructions) OO
5.	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:		7.	SOLE VOTING POWER 357,044
		8.	SHARED VOTING POWER 0
		9.	SOLE DISPOSITIVE POWER 357,044
		10.	SHARED DISPOSITIVE POWER 0
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 357,044
12.	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES ¨
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.32%
14.	TYPE OF REPORTING PERSON PN

CUSIP No. 381119106

Page 4 of 15

1.	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Sentient Executive GP III, Limited
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) x (b) o
3.	SEC USE ONLY
4.	SOURCE OF FUNDS (See Instructions) OO
5.	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:		7.	SOLE VOTING POWER 3,939,790
		8.	SHARED VOTING POWER 0
		9.	SOLE DISPOSITIVE POWER 3,939,790
		10.	SHARED DISPOSITIVE POWER 0
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,939,790
12.	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES ¨
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 3.53%
14.	TYPE OF REPORTING PERSON CO

CUSIP No. 381119106

Page 5 of 15

1.	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Sentient GP III, L.P.
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) x (b) o
3.	SEC USE ONLY
4.	SOURCE OF FUNDS (See Instructions) OO
5.	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:		7.	SOLE VOTING POWER 3,939,790
		8.	SHARED VOTING POWER 0
		9.	SOLE DISPOSITIVE POWER 3,939,790
		10.	SHARED DISPOSITIVE POWER 0
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,939,790
12.	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES ¨
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 3.53%
14.	TYPE OF REPORTING PERSON CO

CUSIP No. 381119106

Page 6 of 15

1.	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Sentient GP IV, L.P.
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) x (b) o
3.	SEC USE ONLY
4.	SOURCE OF FUNDS (See Instructions) OO
5.	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:		7.	SOLE VOTING POWER 41,768,676
		8.	SHARED VOTING POWER 0
		9.	SOLE DISPOSITIVE POWER 41,768,676
		10.	SHARED DISPOSITIVE POWER 0
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 41,768,676
12.	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES ¨
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 36.08%
14.	TYPE OF REPORTING PERSON CO

CUSIP No. 381119106

Page 7 of 15

1.	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Sentient Global Resources Fund IV, L.P.
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) x (b) o
3.	SEC USE ONLY
4.	SOURCE OF FUNDS (See Instructions) OO
5.	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:		7.	SOLE VOTING POWER 41,768,676
		8.	SHARED VOTING POWER 0
		9.	SOLE DISPOSITIVE POWER 41,768,676
		10.	SHARED DISPOSITIVE POWER 0
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 41,768,676
12.	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES ¨
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 36.08%
14.	TYPE OF REPORTING PERSON PN

CUSIP No. 381119106

Page 8 of 15

1.	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Sentient Executive GP IV, Limited
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) x (b) o
3.	SEC USE ONLY
4.	SOURCE OF FUNDS (See Instructions) OO
5.	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:		7.	SOLE VOTING POWER 41,768,676
		8.	SHARED VOTING POWER 0
		9.	SOLE DISPOSITIVE POWER 41,768,676
		10.	SHARED DISPOSITIVE POWER 0
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 41,768,676
12.	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES ¨
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 36.08%
14.	TYPE OF REPORTING PERSON CO

``

CUSIP No. 381119106

Page 9 of 15

Item 1.  

Security and Issuer

This filing relates to the Common Stock (the Common Stock) of Golden Minerals Company (Golden Minerals or the Issuer), a Delaware corporation. The address of Golden Minerals principal office is 350 Indiana Street, Suite 800, Golden, Colorado 80401.

Item 2.  

Identity and Background is amended to read as follows:

(a) (c) This Schedule is being filed jointly by: (i) Sentient Global Resources Fund III, L.P. (Fund III),  (ii) SGRF III Parallel I, L.P. (Parallel I), (iii) Sentient Executive GP III, Limited (Sentient Executive III), (iv) Sentient GP III, L.P. (GP III); (v) Sentient Global Resources Fund IV, L.P. (Fund IV); (vi) Sentient GP IV, L.P. (GP IV); and (vii) Sentient Executive GP IV, Limited (Sentient Executive IV) (the foregoing are collectively referred to herein as the Reporting Persons or Sentient).   Sentient Executive IV is the general partner of the general partner of Fund IV and makes the investment decisions for those entities.

Fund III and Parallel I are both Cayman Islands limited partnerships. The sole general partner of each is Sentient GP III, L.P. which is a Cayman Islands limited partnership (GP III). The sole general partner of GP III is Sentient Executive III which is a Cayman Islands exempted company. Fund IV is a Cayman Islands limited partnership. The sole general partner is Sentient GP IV, L.P. which is a Cayman Islands limited partnership (GP IV). The sole general partner of GP IV is Sentient Executive IV which is a Cayman Islands exempted company. The principal business of Fund III, Parallel I, and Fund IV is making investments in public and private companies engaged in mining and other natural resources activities.  The principal business of GP III is performing the functions of and serving as the sole general partner of Fund III, Parallel I and other similar funds and the principal business of Sentient Executive III is performing the functions of and serving as the sole general partner of GP III. Investment decisions related to investments of Fund III and Parallel I are made by Sentient Executive with the approval of Fund III and Parallel I, as appropriate. The principal business of GP IV is performing the functions of and serving as the sole general partner of Fund IV, and other similar funds and the principal business of Sentient Executive IV is performing the functions of and serving as the sole general partner of GP IV. Investment decisions related to investments of Fund IV are made by Sentient Executive IV with the approval of Fund IV.

The principal offices of each of the Reporting Persons is: Landmark Square, 1st Floor, 64 Earth Close, West Bay Beach South, P.O. Box 10795, George Town, Grand Cayman KY1-1007, Cayman Islands.

(d)

During the past 5 years, none of the Reporting Persons, and to the best knowledge of the Reporting Persons, none of the Schedule A Persons has been convicted in a criminal proceeding (excluding traffic violations and similar misdemeanors).

(e)

During the past 5 years, none of the Reporting Persons, and to the best knowledge of the Reporting persons, none of the Schedule A Persons a party to a civil proceeding of a judicial or administrative body of competent jurisdiction that resulted in a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws, or a party to a civil proceeding of a judicial or administrative body of competent jurisdiction that resulted in a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

(f)

The citizenship of the Schedule A Persons who are natural persons is set forth on Schedule A and incorporated herein by this reference.

Item 3.

Source and Amount of Funds or Other Consideration

The funds used by Fund IV to make the investments in Golden Minerals described below are funds held by it for investment.  

Item 4.

Purpose of Transaction is amended to read as follows:

 

(a) The acquisition of additional securities of the Issuer, or the disposition of securities of the Issuer.  

CUSIP No. 381119106

Page 10 of 15

Convertible Note

On October 27, 2015, the Issuer, entered into a Loan Agreement (the Loan Agreement ) with Fund IV (Fund IV ). At that time the Reporting Persons owned, in the aggregate, approximately 27% of the Issuers outstanding Common Stock (excluding restricted Common Stock held by the Issuers employees and excluding shares reserved for issuance pursuant to the exercise of warrants and conversion of the Note described herein).

 

Pursuant to the terms of the Loan Agreement, on October 27, 2015, the Issuer borrowed from Fund IV $5.0 million, the entire amount available under the Loan Agreement, and the Issuer delivered a Senior Secured Convertible Note (the Note ) in favor of Fund IV, with principal and accrued interest thereunder due on October 27, 2016.  Pursuant to the Loan Agreement and as required by NYSE MKT rules, the conversion features of the Note would only be effective if approved by the Issuers shareholders which approval occurred on January 19, 2016.  As a result, at the option of Fund IV, all or any of the  the outstanding principal balance together with accrued and unpaid interest evidenced by the Note became convertible into shares of the Issuers Common Stock at a conversion price equal to the lowest of (i) $0.29 (90 percent of the 15-day volume weighted average price (VWAP) for the period immediately preceding the loan funding date), (ii) 90 percent of the 15-day VWAP for the period immediately preceding any election to convert, or (iii) an anti-dilution adjusted price based on the lowest price for which the Issuer has sold its stock following the borrowing date (subject to certain exceptions set forth in the Note). 

On February 11, 2016, Sentient converted a portion of the Note ($3,874,416 in principal and $132,772 in accrued interest) (the Partial Note Conversion) leaving an unpaid principal balance of $1,125,584.  The partial conversion of principal and interest was at a conversion price of $0.1715773, which was 90% of the 15 day VWAP for the period immediately preceding the conversion date.  The Partial Note Conversion resulted in the acquisition by Fund IV of an additional 23,355,000 shares of Common Stock and an additional 102,182 September 2012 Warrants, defined below, pursuant to the anti-dilution adjustment feature of the September 2012 Warrants triggered by the Partial Note Conversion.

On June 10, 2016, Sentient converted the final portion of the Note ($1,125,583.61 in principal and $34,064.20 in accrued interest) (the Final Note Conversion) leaving an unpaid principal balance of $0.  The final conversion of principal and interest was at a conversion price of $0.289063541, which was 90% of the 15 day VWAP for the period immediately preceding the loan funding date.  The Final Note Conversion resulted in the acquisition by Fund IV of an additional 4,011,740 shares of Common Stock and an additional 1,589 September 2012 Warrants, defined below, pursuant to the anti-dilution adjustment feature of the September 2012 Warrants triggered by the Final Note Conversion.

Warrant Adjustments

  

In September 2012, the Issuer closed on a 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 $8.42 per share (the September 2012 Warrants).  The exercise price was subsequently adjusted downward to $7.17 per share based on the weighted average anti-dilution provision in the September 2012 Warrants as a result of the September 2014 public offering and concurrent Fund IV private placement described below. As a result of the Partial Note Conversion, the number of shares of Common Stock issuable upon exercise of the September 2012 Warrants beneficially owned by Fund IV was increased from 1,027,690 shares to 1,129,872 shares, an increase of 102,182, and the exercise price was decreased to approximately $5.09 per share due to the anti-dilution provisions of the September 2012 Warrants.   As a result of the May 2016 Offering described below the number of shares of Common Stock issuable upon exercise of the September 2012 Warrants beneficially owned by Fund IV was increased from 1,129,872 shares to 1,216,403 shares, an increase of 86,531 shares, and the exercise price was decreased from $5.06 to approximately $4.73 per share due to the anti-dilution provisions of the September 2012 Warrants. As a result of the Final Note Conversion, the number of shares of Common Stock issuable upon exercise of the September 2012 Warrants beneficially owned by Fund IV was increased from 1,216,403 shares to 1,217,992 shares, an increase of 1,589 shares, and the exercise price was decreased from $4.73 to approximately $4.72 per share due to the anti-dilution provisions of the September 2012 Warrants (the 2012 Warrant Adjustment). 

  

CUSIP No. 381119106

Page 11 of 15

In September 2014, the Issuer closed on a public offering and concurrent private placement with Fund IV in which the Issuer 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 (the September 2014 Warrants and together with the September 2012 Warrants, the Warrants). Fund IV purchased September 2014 Warrants exercisable to purchase an aggregate of 2.9 million shares in that private placement. As a result of the Partial Note Conversion, pursuant to the anti-dilution provisionsin theSeptember 2014 Warrants, the number of shares of Common Stock issuable upon exercise of the September 2014 Warrants held by Fund IV did not change, but the September 2014 Warrants exercise price was decreased to approximately $0.91 per share (the 2014 Warrant Adjustment, and together with the 2012 Warrant Adjustment, the Warrant Adjustment).

On May 6, 2016, the Issuer closed on a public offering of an aggregate of 8,000,000 shares of Common Stock at a price of $.50 per share and a concurrent private placement of warrants exercisable to purchase an additional 6,000,000 shares of Common Stock at an exercise price of $0.75 per share (collectively the May 2016 Offering).  As a result of the May 2016 Offering, pursuant to the weighted-average anti-dilution provisions of the September 2012 Warrants, the number of shares of Common Stock issuable upon exercise of the 2012 Warrants increased from1,129,872 shares to 1,216,403 shares, an increase of 86,531 shares, and the exercise price was decreased from $5.06 per share to approximately $4.73 per share. Also as a result of the May 2016 Offering, the number of shares issuable upon exercise of the September 2014 Warrants did not change, but the exercise price decreased from $0.91 per share to approximately $0.87 per share.  

The May 2016 Offering did not trigger any adjustment to the conversion price of the Convertible Note because the price of the securities sold in the May 2016 Offering was higher than the conversion price of the Convertible Note.

On June 10, 2016, as a result of the Final Note Conversion, pursuant to the anti-dilution provisionsin theSeptember 2014 Warrants, the number of shares of Common Stock issuable upon exercise of the September 2014 Warrants held by Fund IV, as well as the exercise price per share, did not change.

Summary of Ownership

The following table shows the number of shares of the Issuers Common Stock after giving effect to the Final Note Conversion as well as the purchase price paid by Fund IV and the percentage ownership of Fund III, Parallel I, and Fund IV.

	Number of Shares owned as of June 10, 2016	Number of Warrants previously owned and acquired as a result of anti-dilution as of June 10, 2016	Total ownership as a % of fully diluted shares as of June 10, 2016

Fund III

3,582,746

0

         3.21%**

Parallel I

357,044

0

          0.32%**

Fund IV

37,650,684

 4,117,992*

        36.08%**

Total

   41,590,474

     4,117,992

   39.48%***

*

Includes (i) September 2012 Warrants exercisable to purchase an aggregate of 1,217,992 shares at an exercise price of $4.72 per share and (ii) September 2014 Warrants exercisable to purchase an aggregate of 2.9 million shares at an exercise price of $0.87 per share, after giving effect to all anti-dilution adjustments.

**

The percentages shown for Fund III and Parallel I do not include shares issuable upon exercise of the 2012 Warrants, the 2014 Warrants or any shares issuable upon conversion of any remaining amounts due under the Note, while the percentage shown for Fund IV includes these shares in the calculation.

CUSIP No. 381119106

Page 12 of 15

***

Total percentages dont tie due to rounding.

The percentage of outstanding shares is based upon the Issuer having a total of 111,644,272 shares of Common Stock issued and outstanding after giving effect to the Final Note Conversion.

The Reporting Persons reserve the right to acquire beneficial ownership or control over additional securities of the Issuer.

 

 (b) Any extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Issuer or any of its subsidiaries.

None. The Reporting Persons reserve the right to explore future opportunities.

(c) A sale or transfer of a material amount of assets of the Issuer or any of its subsidiaries.  

None.

(d) Any change in the present board or directors or management of the Issuer, including plans or proposals to change the number of term of directors or to fill any existing vacancies on the board.

None.

(e) Any material change in the present capitalization or dividend policy of the Issuer.  

None.

(f) Any other material change in the Issuers business or corporate structure. None, except as set forth herein.

None.

(g) Changes to the Issuers charter, bylaws or instruments corresponding thereto or other actions which may impede the acquisition of control of the Issuer by any person.

None.

(h) Causing a class of securities of the Issuer to be delisted form a national securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association.

None.

(i) Causing a class of equity securities of the Issuer becoming eligible for termination of registration pursuant to Section 12(g)(4) of the Act.

None.

(j) Any action similar to any of those enumerated above.

None.

Item 5.

Interest in Securities of the Issuer is amended to read as follows:

CUSIP No. 381119106

Page 13 of 15

Fund III owns 3,582,746 shares of the Issuers Common Stock.

Parallel I owns 357,044 shares of the Issuers Common Stock.

Fund IV owns (i) 37,650,684 shares of the Issuers Common Stock, and (ii) warrants exercisable to purchase an additional 4,117,992 shares of the Issuers Common Stock at prices ranging from $0.87 to $4.72 per share.  

Item 6.

Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer

None.

Item 7.

Material to be Filed as Exhibits

Filing Agreement dated to be effective June 10, 2016 by and among Sentient Global Resources Fund III, L.P., SGRF III Parallel I, L.P.; Sentient Executive GP III, Limited; Sentient GP III, L.P.; Sentient Global Resources Fund IV, L.P., Sentient GP IV, L.P., its General Partner and Sentient Executive GP IV, Limited, General Partner filed herewith.

Registration Rights Agreement between Golden Minerals Company and Sentient Global Resources Fund IV, L.P. dated as of June 10, 2016 and filed as Exhibit 10.1 on the Companys Current Report on Form 8-K filed with the Commission on June 14, 2016 and incorporated herein by reference.

CUSIP No. 381119106

Page 14 of 15

Signatures

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Sentient Global Resources Fund III, L.P.      By: Sentient GP III, L.P., General Partner             By: Sentient Executive GP III, Limited,                                      General Partner By:  /s/ Andrew Pullar                        Andrew Pullar, Director Date: June 17, 2016	SGRF III Parallel I, L.P.      By: Sentient GP III, L.P., General Partner             By: Sentient Executive GP III, Limited,                                      General Partner By:  /s/ Andrew Pullar                        Andrew Pullar, Director Date: June 17, 2016
Sentient GP III, L.P. By:  /s/ Andrew Pullar                        Andrew Pullar, Director Date: June 17, 2016 Sentient Executive GP III, Limited By:  /s/ Andrew Pullar                        Andrew Pullar, Director Date: June 17, 2016	Sentient Global Resources Fund IV, L.P.      By: Sentient GP IV, L.P., General Partner             By: Sentient Executive GP IV, Limited,                                      General Partner By:  /s/ Andrew Pullar                        Andrew Pullar, Director Date: June 17, 2016
Sentient GP IV, L.P. By:  /s/ Andrew Pullar                        Andrew Pullar, Director Date: June 17, 2016 Sentient Executive GP IV, Limited By:  /s/ Andrew Pullar                        Andrew Pullar, Director Date: June 17, 2016

CUSIP No. 381119106

Page 15 of 15

SCHEDULE A

The (i) name, (ii) title, (iii) citizenship, (iv) principal occupation and (v) business address of each director of Sentient Executive GP III, Limited and Sentient Executive GP IV, Limited are as follows. Neither Sentient Executive GP III, Limited nor Sentient Executive GP IV, Limited has any executive officers.

Name		Title		Citizenship		Principal Occupation		Business Address
Peter Cassidy		Director		Australia		Investment Manager		Level 44, Grosvenor Place 225 George Street Sydney NSW 2000 Australia
Greg Link		Director		New Zealand		Director		Landmark Square 1st Floor, 64 Earth Close West Bay Beach South P.O. Box 10795 George Town, Grand Cayman KY1-1007 Cayman Islands
Peter Weidmann		Director		Germany		Investor Relations Manager		Schellingstrasse 76 80799 Munich  Germany
Andrew Pullar		Director		Australian U.K.		Director		Landmark Square 1st Floor, 64 Earth Close West Bay Beach South P.O. Box 10795 George Town, Grand Cayman KY1-1007Cayman Islands