SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D/A

(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO RULE 13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT

TO RULE 13d-2(a)

(Amendment No. 17)^*

Golden Queen Mining Co. Ltd.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

38115J100

(CUSIP Number)

Landon T. Clay

Thomas M. Clay

Landon T. Clay 2009 Irrevocable Trust u/a dated March 6, 2009

c/o East Hill Management Company, LLC

10 Memorial Boulevard, Suite 902

Providence, RI 02903

(401) 490-0700

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

March 26, 2014

(Date of Event which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box o.

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7(b) for other parties to whom copies are to be sent.

(Continued on following pages)

(Page 1 of 11 Pages)

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

SCHEDULE 13D

SCHEDULE 13D

SCHEDULE 13D

SCHEDULE 13D

This Amendment No. 17 to Schedule 13D (the “Amendment”) is being filed by the undersigned to amend and restate the disclosures contained in Schedule 13D originally filed on June 2, 2006 by Landon T. Clay, as amended by a Schedule 13D/A filed on February 2, 2010 by Landon T. Clay and Thomas M. Clay, as amended by a Schedule 13D/A filed on April 16, 2010, as amended by a Schedule 13D/A filed on June 16, 2010, as amended by a Schedule 13D/A filed on February 10, 2011, as amended by a Schedule 13D/A filed on April 12, 2011, as amended by a Schedule 13D/A filed on October 14, 2011, as amended by a Schedule 13D/A filed on February 9, 2012, as amended by a Schedule 13D/A filed on April 25, 2012, as amended by a Schedule 13D/A filed on July 16, 2012, as amended by a Schedule 13D/A filed on October 26, 2012, as amended by a Schedule 13D/A filed on February 21, 2013, as amended by a Schedule 13D/A filed on March 27, 2013, as amended by a Schedule 13D/A filed on May 2, 2013, as amended by a Schedule 13D/A filed on July 30, 2013, as amended by a Schedule 13D/A filed on July 31, 2013, and as amended by a Schedule 13D/A filed on December 10, 2013. This Amendment is being filed to update the beneficial holdings resulting from (i) the transfer of shares from the Landon T. Clay 2013-6 Annuity Trust u/a dated December 9, 2013 (the “2013-6 GRAT”) to Landon T. Clay and (ii) the transfer of shares from the Landon T. Clay 2009 Irrevocable Trust u/a dated March 6, 2009 (the “2009 Irrevocable Trust”) to Landon T. Clay. Landon T. Clay, Thomas M. Clay and the 2009 Irrevocable Trust are hereinafter referred to as the “Reporting Persons”.

Item 1. Security and Issuer.

This Amendment relates to the Common Stock (the “Common Stock”) of Golden Queen Mining Co. Ltd., a corporation organized under the laws of British Columbia, Canada. The principal executive office of the Company is 6411 Imperial Ave., West Vancouver, BC V7W 2J5.

Item 2. Identify and Background.

SCHEDULE 13D

Item 3. Source and Amount of Funds or Other Consideration.

The Reporting Persons acquired the shares of Common Stock by purchase through their personal assets.

On July 14, 2009, Landon T. Clay purchased an aggregate of 1,200,000 shares of Common Stock of Golden Queen pursuant to a private placement of shares for a total purchase price of $780,000 CAD.

On January 28, 2009, Thomas M. Clay was granted options to purchase an aggregate of 300,000 shares of Common Stock of Golden Queen at an exercise price of $0.26 CAD per share (the “Options”). Such Options are exercisable at any time and expire on January 28, 2014. As of the date of hereof, Thomas M. Clay has not exercised any of the Options.

Landon T. Clay owned 50% of the outstanding shares of Arctic Coast Petroleums, Ltd., a corporation organized under the laws of Alberta, Canada (“Arctic Coast”). Arctic Coast owns an aggregate of 807,250 shares of Common Stock of Golden Queen. On October 22, 2009, Landon T. Clay transferred his ownership in Arctic Coast to the Clay Family 2009 Irrevocable Trust u/a dated April 14, 2009 (the “Irrevocable Trust”). Thomas M. Clay and Harris Clay, are the trustees of the Irrevocable Trust. The transfer was made as a gift to the Irrevocable Trust without payment or receipt of any consideration by Landon T. Clay or the Irrevocable Trust. Thomas M. Clay is a director of Arctic Coast.

On February 2, 2010, Landon T. Clay transferred an aggregate of 11,361,245 shares of Common Stock of Golden Queen into the Landon T. Clay 2010-1 Annuity Trust u/a dated February 2, 2010 (the “2010-1 GRAT”). Thomas M. Clay is the sole trustee under the 2010-1 GRAT. The transfer was made as a gift to the 2010-1 GRAT without payment or receipt of any consideration by Landon T. Clay or the 2010-1 GRAT.

On April 9, 2010, Landon T. Clay transferred an aggregate of 4,990,474 shares of Common Stock of Golden Queen into the Landon T. Clay 2010-2 Annuity Trust u/a dated April 9, 2010 (the “2010-2 GRAT”). Thomas M. Clay is the sole trustee under the 2010-2 GRAT. The transfer was made as a gift to the 2010-2 GRAT without payment or receipt of any consideration by Landon T. Clay or the 2010-2 GRAT.

On February 3, 2011, Thomas M. Clay, as Trustee of the 2010-1 GRAT authorized the transfer of 1,999,389 shares of Golden Queen from the 2010-1 GRAT to Landon T. Clay as satisfaction of the annuity amount authorized by the 2010-1 GRAT.

SCHEDULE 13D

On April 7, 2011, Winter Place Associates, a general partnership, of which each of Messrs. has a partnership interest, purchased an aggregate of 10,000 shares of Golden Queen. Each of Messrs. Clay disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

On April 11, 2011, Thomas M. Clay, as Trustee of the 2010-2 GRAT authorized the transfer of 829,579 shares of Golden Queen from the 2010-2 GRAT to Landon T. Clay as satisfaction of the annuity amount authorized by the 2010-2 GRAT.

On October 12, 2011, Landon T. Clay transferred an aggregate of 3,524,268 shares of Common Stock of Golden Queen into the Landon T. Clay 2011-2 Annuity Trust u/a dated October 12, 2011 (the “2011-2 GRAT”). Thomas M. Clay is the sole trustee under the 2011-2 GRAT. The transfer was made as a gift to the 2011-2 GRAT without payment or receipt of any consideration by Landon T. Clay or the 2011-2 GRAT.

On February 7, 2012, Thomas M. Clay, as Trustee of the 2010-1 GRAT authorized the transfer of 2,024,044 shares of Golden Queen from the 2010-1 GRAT to Landon T. Clay as satisfaction of the annuity amount authorized by the 2010-1 GRAT. On February 7, 2012, Thomas M. Clay, as Trustee of the 2010-1 GRAT authorized the transfer of 7,337,812 shares of Golden Queen from the 2010-1 GRAT to the Landon T. Clay 2009 Irrevocable Trust u/a March 9, 2009 (the “2009 Irrevocable Trust”). Thomas M. Clay is a trustee of the 2009 Irrevocable Trust.

On April 24, 2012, Thomas M. Clay, as Trustee of the 2010-2 GRAT authorized the transfer of 1,338,197 shares of Golden Queen from the 2010-2 GRAT to Landon T. Clay as satisfaction of the annuity amount authorized by the 2010-2 GRAT. On April 24, 2012, Thomas M. Clay, as Trustee of the 2010-2 GRAT authorized the transfer of 2,822,698 shares of Golden Queen from the 2010-2 GRAT to the 2009 Irrevocable Trust.

On July 12, 2012, Landon T. Clay transferred an aggregate of 3,362,241 shares of Common Stock of Golden Queen into the Landon T. Clay Annuity Trust u/a dated July 12, 2012 (the “2012-1 GRAT”). Thomas M. Clay is the sole trustee under the 2012-1 GRAT. The transfer was made as a gift to the 2012-1 GRAT without payment or receipt of any consideration by Landon T. Clay or the 2012-1 GRAT.

On October 24, 2012, Thomas M. Clay, as Trustee of the 2011-2 GRAT authorized the transfer of 1,966,651 shares of Golden Queen from the 2011-2 GRAT to Landon T. Clay as satisfaction of the annuity amount authorized by the 2011-2 GRAT.

On February 15, 2013, the Landon T. Clay Charitable Annuity Lead Trust II distributed an aggregate of 2,545,825 shares of the Issuer’s Common Stock to the named beneficiaries of the Trust.

SCHEDULE 13D

On March 21, 2013, Thomas M. Clay as Trustee of the 2011-2 GRAT and the 2012-1 GRAT authorized the transfer of an aggregate of 4,919,858 shares from the GRATS to Landon T. Clay in exchange for cash in the amount of $10,085,708.90. Under the terms of each of the 2011-2 GRAT and the 2012-1 GRAT, Landon T. Clay, as the Grantor of the GRATS exercised his right to substitute property of equivalent value, valued on the date of substitution, in each of the GRATS.

On March 26, 2013, Landon T. Clay transferred an aggregate of 6,886,509 shares of Common Stock of Golden Queen into the Landon T. Clay 2013-2 Annuity Trust u/a March 26, 2013 (the “2013-2 GRAT”). Thomas M. Clay is the sole trustee under the 2013-2 GRAT. The transfer was made as a gift to the 2013-2 GRAT without payment or receipt of any consideration by Landon T. Clay or the 2013-2 GRAT.

On April 23, 2013, Thomas M. Clay as Trustee of the 2013-2 GRAT authorized the transfer of an aggregate of 6,886,509 shares from the 2013-2 GRAT to Landon T. Clay in exchange for cash in the amount of $6,848,633.20. Under the terms of the 2013-2 GRAT, Landon T. Clay, as the Grantor of the GRAT exercised his right to substitute property of equivalent value, valued on the date of substitution, in the GRAT.

On April 30, 2013, Landon T. Clay transferred an aggregate of 6,886,509 shares of Common Stock of Golden Queen into the Landon T. Clay 2013-3 Annuity Trust u/a dated April 30, 2013 (the “2013-3 GRAT”). Thomas M. Clay is the sole trustee under the 2013-3 GRAT. The transfer was made as a gift to the 2013-3 GRAT without payment or receipt of any consideration by Landon T. Clay or the 2013-3 GRAT.

On July 26, 2013, the Landon T. Clay 2013-4 Annuity Trust u/a dated June 17, 2013 (the “2013-4 GRAT”) acquired a convertible debenture in the amount of $7,500,000 CAD from the Issuer (the “Debenture”). Thomas M. Clay is the sole trustee under the 2013-4 GRAT. The Debenture is unsecured and bears interest at 2% per annum payable annually. Such Debenture is convertible into shares of the Issuer’s common stock at a conversion rate of $1.03 CAD per share for a period of two years. The Debenture expires on July 26, 2015 (the “Maturity Date”). The Debenture is currently exercisable and if converted within the next sixty (60) days it would convert into 7,281,553 shares of the Issuer’s Common Stock. If the Debenture has not been converted by the 2013-4 GRAT prior to the Maturity Date, the Issuer or the 2013-4 GRAT may convert the Debenture at the lower of $1.03 CAD or the market price as at the Maturity Date.

On October 28, 2013 Thomas M. Clay exercised his options to purchase 300,000 shares of Common Stock of Golden Queen at an exercise price of $0.26 CAD per share (the “Options). Such Options were granted on January 28, 2009, were exercisable at any time, and would expire on January 28, 2014

On December 2, 2013, Thomas M. Clay as Trustee of the 2013-3 GRAT authorized the transfer of an aggregate of 6,886,509 shares from the 2013-3 GRAT to Landon T. Clay in exchange for cash in the amount of $5,416,721.38. Under the terms of the 2013-3 GRAT, Landon T. Clay, as the Grantor of the GRAT exercised his right to substitute property of equivalent value, valued on the date of substitution, in the GRAT.

SCHEDULE 13D

On December 9, 2013, Landon T. Clay transferred an aggregate of 6,886,509 shares of Common Stock of Golden Queen into the Landon T. Clay 2013-6 Annuity Trust u/a dated December 9, 2013 (the “2013-6 GRAT”). Thomas M. Clay is the sole trustee under the 2013-6 GRAT. The transfer was made as a gift to the 2013-6 GRAT without payment or receipt of any consideration by Landon T. Clay or the 2013-6 GRAT.

On March 26, 2014, Thomas M. Clay as Trustee of the 2013-6 GRAT authorized the transfer of an aggregate of 6,886,509 shares from the 2013-6 GRAT to Landon T. Clay in exchange for cash in the amount of $11,338,168.79. Under the terms of the 2013-6 GRAT, Landon T. Clay, as the Grantor of the GRAT exercised his right to substitute property of equivalent value, valued on the date of substitution, in the GRAT. Also, on March 26, 2014, Thomas M. Clay as Trustee of the 2009 Irrevocable Trust authorized the transfer of an aggregate of 10,160,510 shares from the 2009 Irrevocable Trust to Landon T. Clay in exchange for cash in the amount of $16,728,588.20. Under the terms of the 2009 Irrevocable Trust, Landon T. Clay, as the Donor of the Trust exercised his right to substitute property of equivalent value, valued on the date of substitution, in the Trust.

Item 4. Purpose of this Transaction.

All of the shares of Golden Queen common stock beneficially owned by Landon T. Clay and Thomas M. Clay and reported in this Amendment were acquired for investment purposes.

Item 5. Interest in Securities of the Issuer.

SCHEDULE 13D

Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.

The Debenture is subject to a Private Placement Subscription Agreement dated as of July 24, 2013 and the terms of the Convertible Debenture issued thereunder on July 26, 2013.

There are no other contracts, arrangements, understandings or relationships with respect to the securities of the Company by and between the Company and the Reporting Persons.

Item 7. Material to be Filed as Exhibits

SCHEDULE 13D

*Included as an exhibit to the Schedule 13D/A filed on February 2, 2010.

** Included as an exhibit to the Schedule 13D/A filed on April 25, 2012.

SIGNATURE

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.