Document:

Form of Global Debenture

 Exhibit 4.2 
 FORM OF DEBENTURE 
 UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC”), NEW YORK, NEW YORK, TO THE ISSUER OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR
SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO., OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC) ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR
VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN. 

TRANSFERS OF THIS GLOBAL NOTE SHALL BE LIMITED TO TRANSFERS IN WHOLE, BUT NOT IN PART, TO NOMINEES OF DTC OR TO A SUCCESSOR THEREOF OR SUCH
SUCCESSOR’S NOMINEE AND TRANSFERS OF PORTIONS OF THIS GLOBAL NOTE SHALL BE LIMITED TO TRANSFERS MADE IN ACCORDANCE WITH THE RESTRICTIONS SET FORTH IN THE INDENTURE REFERRED TO ON THE REVERSE HEREOF. 

GOLDEN STAR RESOURCES LTD. 
 (A corporation continued pursuant to the federal laws of Canada) 
 5.00%
Convertible Senior Unsecured Debenture Due June 1, 2017 
  

			
		  	  

		
	No. 1	  	CUSIP 38119T AE4
		  	  

		
	Date of Initial Issue: May 31, 2012	  	Maturity Date: June 1, 2017
		
	Holder: CEDE & Co.	  	

 Golden Star Resources Ltd. (the “Company”), for value received, hereby
acknowledges itself indebted and promises to pay to the order of the registered holder on June 1, 2017 (the “Maturity Date”), or on such earlier date as the principal amount hereof may become due in accordance with the provisions of
the Indenture hereinafter mentioned and defined, the principal sum of 

  
 Schedule A
– Page 1 

 Seventy-seven million four hundred ninety thousand four hundred Dollars ($77,490,400)

 in lawful money of the United States of America, on presentation and surrender of this Debenture at the principal
office of the Indenture Trustee (defined below) in the manner specified in the Indenture, in The City of New York, State of New York, and to pay interest on the principal amount hereof to the Holder of record on the 15th day of May and November in each year, as the case may be, at the
rate of 5.00% per annum from and including the Issue Date or from and including the most recent Interest Payment Date to which interest has been paid or made available for payment on the Debentures then outstanding, whichever is later, to but
excluding the next Interest Payment Date, in like money in equal semi-annual installments in arrears on the first day of June and December in each year (each such date an “Interest Payment Date”), commencing December 1, 2012
with overdue interest, if any, at the same rate after as well as before maturity and after as well as before default in payment of principal or interest. The December 1, 2012 interest payment will represent accrued interest from and including
the Issue Date. 
 As interest on this Debenture becomes due, the Company (subject to early repurchase or conversion pursuant to
the terms of the Indenture) shall forward or cause to be forwarded by courier or ordinary post to the registered address of the Holder of the Debenture for the time being, or in the case of joint Holders to the registered address of any one of such
joint Holders, or in accordance with the procedures established by the Depository if this is a Book-Entry Only Debenture, electronic funds transfer for such interest, payable to the order of such Holder or Holders. The forwarding of such electronic
funds transfer shall satisfy and discharge the liability for interest on this Debenture to the extent of the sum represented thereby. 
 This Debenture is one of the 5.00% Convertible Senior Unsecured Debentures due June 1, 2017 (the “Debentures”) in the aggregate principal amount of up to $77,490,400 in lawful money of
the United States created and issued under a Trust Indenture (the “Indenture”) dated as of May 31, 2012 made between the Company and The Bank of New York Mellon, as trustee (the “Indenture Trustee”). Reference is
hereby made to the Indenture for a description of the rights of the Holders of the Debentures, the Company and the Indenture Trustee and of the terms and conditions upon which the Debentures are issued and held, all to the same effect as if the
provisions of the Indenture were herein set forth, to all of which provisions the Holder of this Debenture, by acceptance hereof, agrees. To the extent that the terms and conditions stated in this Debenture conflict with the terms and conditions of
the Indenture, the latter shall prevail. All capitalized terms used herein have the meaning ascribed thereto in the Indenture unless otherwise indicated. 
 The Debentures are issuable as fully registered Debentures in denominations of $1,000 and integral multiples of $1,000. The Debentures of any authorized denomination may be exchanged, as provided in the
Indenture, for Debentures in equal aggregate principal amount. The Debentures may only be transferred in denominations of $1,000 and integral multiples of $1,000. 
 This Debenture and all other Debentures authenticated and issued under the Indenture rank pari passu with one another, in accordance to their tenor without discrimination, preference or priority.
The Indenture does not contain any financial covenants or restrictions on the Company’s ability to pay dividends, incur indebtedness or issue or repurchase securities. 

 Subject to regulatory approval, the Company may, at its option, upon not less than 40 days
and not more than 60 days prior notice, repay the principal amount of the outstanding Debentures at Maturity by issuing and delivering, for each $1,000 principal amount of Debentures, that number of fully paid and non-assessable Freely Tradable
Common Shares equal to the number obtained by dividing such principal amount of Debentures by 95% of the Current Market Price of the Common Shares on the Maturity Date; provided, however, that no Event of Default shall have occurred and be
continuing and the Company is a reporting issuer or equivalent in good standing or equivalent under Applicable Securities Laws in the United States and provinces of Canada in which the Company is a reporting issuer on Maturity. No fractional Common
Shares will be delivered to the Holders upon such share redemption, but in lieu thereof, if such a fraction shall become owing, the Company will make an equivalent cash payment. Notwithstanding the foregoing, the aggregate number of Common Shares
contemplated to be so issued, combined with any Common Shares issued upon conversion of the Debentures prior to the Maturity Date may not exceed 19.99% of the issued and outstanding Common Shares as of the date of the Indenture, unless the Company
obtains (i) additional listing approval for the Common Shares to be so issued, if required, from the NYSE MKT, the TSX and/or any other relevant Recognized Stock Exchange, as applicable, and (ii) consent for the issuance of such Common
Shares from the Holders of not less than a majority of the aggregate principal amount of the Debentures Outstanding at the time such consent is solicited. The balance of the amount payable at Maturity that is not repaid by the issuance of Common
Shares (the value of such Common Shares being calculated by multiplying the number of Common Shares so issued by 95% of the Current Market Price of the Common Shares on the Maturity Date), shall be paid in cash. 

Each $1,000 principal amount of Debentures is convertible at any time and from time to time prior to the close of
business on the Business Day immediately preceding Maturity or the Payment Date, at the option of the Holder, into that number of Common Shares obtained by dividing $1,000 by the conversion price of $1.65 per Common Share, subject to adjustment upon
the occurrence of certain events specified in the Indenture. No fractional Common Shares will be delivered to the Holders upon conversion, but in lieu thereof, if such a fraction shall become owing, the Company will make an equivalent cash payment.
The accrued and unpaid interest on any Debentures so converted shall be paid in cash. Notwithstanding the foregoing, in lieu of delivering Common Shares to the Holder upon conversion of a Debenture, the Company may elect to pay cash to such Holder
in an amount based on the daily volume weighted average price of the Common Shares on the NYSE MKT as measured over a period of 10 consecutive Trading Days commencing on the third day following the date of conversion or, if conversion occurs in the
12 Trading Days prior to Maturity, over the 10 Trading Days commencing with the 12th Trading Day prior to Maturity (the “Cash Payment Option”). Notwithstanding the foregoing but subject to certain exceptions as set forth in the Indenture, the Company shall not effect any
conversion of the Debenture and the Holder shall not have the right to convert the Debenture in excess of that portion of the principal amount thereof that, upon giving effect to such conversion, would cause the aggregate number of Common Shares
beneficially owned by the Holder and its affiliates to exceed 4.99% of the total outstanding Common Shares following such conversion (or 9.99% of the total outstanding Common Shares following such conversion if the Holder so

 
elects and provides written notice to increase the threshold, which increase shall be effective 61 days after receipt of the notice by the Company). The foregoing limitations shall not apply to
the Common Shares issuable on the Maturity of the Debentures, or to the Additional Shares (as defined below). 
 Upon the giving
of notice by the Indenture Trustee of the occurrence of an Event of Default and declaration of acceleration made in accordance with the Indenture, the Debentures will become immediately due and payable. 

The Company must commence, within 30 days of the occurrence of a Change of Control, an Offer to Purchase for all Debentures then
Outstanding. The Offer to Purchase shall be made at a purchase price equal to 100% of the principal amount thereof, plus accrued and unpaid interest thereon, if any, to but excluding the Payment Date (the “Change of Control Purchase
Price”). An Offer to Purchase shall be open for at least 20 Business Days and the Payment Date shall be the Business Day following the expiry of the Offer to Purchase. If 90% or more in aggregate principal amount of Debentures outstanding
on the date the Company commences the Offer to Purchase have been tendered for purchase pursuant to the Offer to Purchase, the Company has the right following the expiration of the Offer to Purchase to redeem all, but not less than all, the
Debentures remaining outstanding on the expiration of the Offer to Purchase at the Change of Control Purchase Price. 
 If 10%
or more of the fair market value of the consideration for Common Shares in a Change of Control transaction consists of cash, equity securities that are not traded on a Recognized Stock Exchange, or other property that is not traded on a Recognized
Stock Exchange (a “Cash Transaction”), Holders may, prior to the effective date of such transaction (the “Effective Date”), elect to convert their Debentures, in which case they shall be entitled to receive, in
addition to the number of Common Shares to which they would otherwise have been entitled on conversion, an additional number of Common Shares (“Additional Shares”) determined by reference to the table set out in
Schedule “C” to the Indenture based on the Effective Date of the Cash Transaction and the Common Share Price. 

Any payments made by or on behalf of the Company under or with respect to the Debentures will be made free and clear of and without
withholding or deduction for or on account of any Taxes, unless the Company or any other payor is required to withhold or deduct Taxes by Applicable Law or by the interpretation or administration thereof by the relevant Governmental Authority. If
the Company is so required to withhold or deduct any amount for or on account of Taxes from any payment made under or with respect to the Debentures, the Company will make such withholding or deduction and will remit the full amount withheld or
deducted to the relevant Governmental Authority as and when required by Applicable Law and the Company will pay such Additional Amounts as may be necessary so that the net amount received by each Holder of Debentures (including Additional Amounts)
after such withholding or deduction will not be less than the amount such Holder would have received if such Taxes had not been withheld or deducted; provided, however, that no Additional Amounts will be payable with respect to any payment to an
Excluded Holder. 
 The Indenture contains provisions for the holding of meetings of Holders and rendering certain resolutions
passed at such meetings by, or by instruments in writing signed by, the 

 
Holders of the majority (or, in certain cases, 75% or the consent of each Holder who is affected thereby) in aggregate principal amount of the Debentures Outstanding binding upon all Holders,
subject to the provisions of the Indenture. 
 This Debenture may only be transferred upon compliance with Applicable Securities
Law and the conditions precedent in the Indenture on the register kept at the principal office of the Indenture Trustee and at such other place or places, if any, and/or by such other registrar or registrars, if any, as the Company with the approval
of the Indenture Trustee may designate, and may be exchanged at any such place, by the Holder hereof or his executors or administrators or other legal representatives or his or their attorney duly appointed by an instrument in writing in form and
execution satisfactory to the Indenture Trustee, and upon compliance with such reasonable requirements as the Indenture Trustee and/or registrar may prescribe, and such transfer shall be duly noted thereon by the Indenture Trustee or other
registrar. 
 This Debenture shall not become obligatory for any purpose until it shall have been authenticated by the Indenture
Trustee for the time being under the Indenture. 
 This Debenture shall be governed by and construed in accordance with the laws
of the State of New York. 
 The Holder of this Debenture, by receiving and holding same, hereby accepts and agrees to be bound
by the terms, and to be entitled to the benefits of this Debenture and of the Indenture and confirms the appointment of the Indenture Trustee, in accordance with and subject to the respective provisions thereof. 

[Execution and certification on next page] 

 IN WITNESS WHEREOF Golden Star Resources Ltd. has caused this Debenture to be signed
by its officers duly authorized to sign. 
 DATED as of the 31 day of May, 2012. 

 

			
	GOLDEN STAR RESOURCES LTD.
		
	Per:	 	  

		 	 Name:

Title:

 TRUSTEE’S CERTIFICATE OF AUTHENTICATION 

This Debenture is one of the 5.00% Convertible Senior Unsecured Debentures due June 1, 2017 referred to in the within-mentioned
Indenture. 
 DATE OF AUTHENTICATION: May 31, 2012 

 

			
	 THE BANK OF NEW YORK MELLON,
 as Indenture Trustee

		
	Per:	 	  

		 	Authorized Signatory

 Appendix I 
 For the purposes of a Global Debenture only: 
 PRINCIPAL AMOUNT GRID

 TO THE GLOBAL DEBENTURE No. 1 
 5.00% Convertible Senior Unsecured Debentures due June 1, 2017 
 CUSIP
38119T AE4 
 Initial Principal Amount:
                     
  

											
	 Date
	  	 Amount 
of Increase
	  	 Amount 
of Decrease
	  	 New 
Principal Amount
	  	 Maturity

Date
	  	 Trustee
Endorsement

		  		  		  		  		  	
		  		  		  		  		  	
		  		  		  		  		  	
		  		  		  		  		  	
		  		  		  		  		  	
		  		  		  		  		  	
		  		  		  		  		  	

  
 Schedule A
– Page 7 

 APPENDIX II 
 FORM OF ASSIGNMENT 
 FOR VALUE RECEIVED, the undersigned hereby
sells, assigns and transfers unto
                                        , whose
address and social insurance number or social security number, if applicable, are set forth below, this Debenture (or $             principal amount hereof*) of Golden Star Resources
Ltd. (the “Company”) standing in the name(s) of the undersigned in the register maintained by the registrar appointed by the Company with respect to such Debenture and does hereby irrevocably authorize and direct the Indenture
Trustee to transfer such Debenture in such register, with full power of substitution in the premises. 
 Dated:
                     
  

	
	  

	Signature of Holder

 Address of Transferee: 
  

			
	  
	  	

 (Street Address, City, Province/State and Postal Zip Code) 

			
		
	  
	  	
	Social Insurance Number or Social Security Number of Transferee, if applicable

  

	*	If less than the full principal amount of the within Debenture is to be transferred, indicate in the space provided above the principal amount (which must be $1,000 or
an integral multiple thereof) to be transferred. 

 Securities Act Compliance 

In connection with any transfer of this Debenture, the undersigned confirms that this Debenture is being transferred [please check one]:

  

					
	(1)	 	 ̈	  	to the Company or a subsidiary thereof; or
			
	(2)	 	 ̈	  	to a “Qualified Institutional Buyer” pursuant to and in compliance with Rule 144A under the United States Securities Act of 1933, as amended (the “Securities
Act”); or
			
	(3)	 	 ̈	  	pursuant to an effective registration statement under the Securities Act;
			
	(4)	 	 ̈	  	outside of the United States to a person other than a “U.S. person” in compliance with Rule 904 of Regulation S under the Securities Act; or
			
	(5)	 	 ̈	  	pursuant to the exemption from registration provided by Rule 144 under the Securities Act.

  
 Schedule A
– Page 8 

 Unless one of the boxes is checked, the Indenture Trustee will refuse to register any of the securities
evidenced by this certificate in the name of any person other than the registered holder thereof, provided that if box (4) or (5) is checked, the Company may require, prior to registering any such transfer of securities, in its sole
discretion, such legal opinions, certifications (including an investment letter in the case of box (4)) and other information as the Company may reasonably request to confirm that such transfer is being made pursuant to an exemption from, or in
a transaction not subject to, the registration requirements of the Securities Act. 
 Signature Guarantee 

The signature(s) to this assignment must correspond with the name(s) as written upon the face of this Debenture in every particular without alteration or
any change whatsoever. The signature(s) on this form must be guaranteed by one of the following methods: 
 Canada and the
USA: A Medallion Signature Guarantee obtained from a member of an acceptable Medallion Signature Guarantee Program (STAMP, SEMP, MSP). Many commercial banks, savings banks, credit unions, and all broker dealers participate in a Medallion
Signature Guarantee Program. The Guarantor must affix a stamp bearing the actual words “Medallion Guaranteed”. 

Canada: A Signature Guarantee obtained from a major Canadian Schedule I chartered bank. The Guarantor must affix a stamp bearing
the actual words “Signature Guaranteed”. Signature Guarantees are not accepted from Treasury Branches, Credit Unions or Caisses Populaires unless they are members of a Medallion Signature Guarantee Program. 

Outside North America: For holders located outside North America, present the certificate(s) and/or document(s) that require a
guarantee to a local financial institution that has a corresponding Canadian or American affiliate which is a member of an acceptable Medallion Signature Guarantee Program. The corresponding affiliate will arrange for the signature to be
over-guaranteed. 
 The registered Holder of this Debenture is responsible for the payment of any documentary, stamp or other transfer taxes
that may be payable in respect of the transfer of this Debenture. 
 Signature of Guarantor: 

 

					
	  
	 		  	  

	Authorized Officer	 		  	Name of InstitutionForm of Purchase and Exchange Agreement

 Exhibit 10.1 
 FORM OF 
 PURCHASE AND EXCHANGE AGREEMENT 

5.00% CONVERTIBLE SENIOR DEBENTURES DUE JUNE 1, 2017 
 This PURCHASE AND EXCHANGE AGREEMENT (the “Agreement”) is made as of May 17, 2012 by and between Golden Star Resources Ltd. (the “Company”) and the undersigned
(including any other person or entities exchanging Debentures (as defined below) hereunder for whom the undersigned holds contractual and investment authority, the “Holder”). 
 RECITALS 
 WHEREAS, the Holder at the Closing Time (as defined below)
will be the beneficial owner of the aggregate principal amount of 4.00% convertible senior unsecured debentures due November 30, 2012 of the Company (the “Debentures”), identified on Schedule “A” hereto in respect of
the Holder, issued pursuant to a trust indenture dated as of November 8, 2007 (the “Indenture”), between the Company and The Bank of New York Mellon, as successor to Bank of New York, as trustee (the
“Trustee”); 
 WHEREAS, the Debentures, to date, have not matured and have not been transferred,
pledged, assigned or otherwise encumbered; 
 WHEREAS, the Holder desires to sell, and the Company desires to acquire
from the Holder, the aggregate principal amount of Debentures identified on Schedule “A” hereto in respect of the Holder (the “Subject Debentures”); 
 WHEREAS, the Holder and the Company have agreed that the Company will acquire the Holder’s Subject Debentures and the Holder will deliver for exchange the Subject Debentures in exchange for
the issuance by the Company to the Holder of the aggregate principal amount of new convertible senior unsecured debentures of the Company due June 1, 2017 (the “New Debentures”) set forth on Schedule “A” hereto in
respect of the Holder in accordance with the terms set forth in this Agreement; and 
 WHEREAS, the Company has duly
authorized the creation of the New Debentures with the tenor and amount and with such terms and conditions as set forth in a new trust indenture between the Company and the Trustee, in substantially the form attached on Schedule “B” hereto
and to be dated the date of closing of this transaction (the “New Indenture”). 

 NOW THEREFORE, in consideration of the mutual promises, representations, warranties,
covenants and agreements of the parties contained herein and for good and valuable consideration, the receipt and sufficiency of which is hereby acknowledged, the parties hereto agree as follows: 

SECTION 1 
 EXCHANGE OF THE SUBJECT DEBENTURES 
 1.1 Subject to the terms and conditions of this
Agreement, the Company agrees to exchange with the Holder and the Holder agrees to deliver, transfer and assign, with good and marketable title and free and clear of any and all Encumbrances (as defined below) whatsoever, to the Company the
aggregate principal amount of Subject Debentures and New Debentures set forth on Schedule “A” hereto, such amounts representing an exchange of 1.04 New Debentures for each 1.00 Subject Debenture. Notwithstanding anything herein, in the
Indenture or otherwise to the contrary, the Company shall pay interest to May 31, 2012 to the Holder in respect of the Subject Debentures exchanged hereunder in the same manner as payment shall be made in respect of Debentures that are not
exchanged. The Company is repurchasing the Subject Debentures in compliance with Section 3.2.1 of the Indenture. 
 1.2 The Holder hereby
agrees that receipt of the New Debentures is sufficient consideration for the sale, transfer and assignment of the Holder’s interest in the Subject Debentures to the Company without reservation and the Company hereby agrees that receipt of the
transferred Subject Debentures from the Holder is sufficient consideration for the due issuance of the New Debentures to the Holder as fully paid securities of the Company. 
 1.3 The delivery of the Holder’s interest in the Subject Debentures to the Company and issuance of the New Debentures by the Company to each the Holder and payment of any accrued and unpaid interest
contemplated hereby shall take place at a closing to be held on or about noon (New York City time), May 31, 2012 or at such other time and place as the Company may designate by notice to the Holder with the consent of the Holder (the
“Closing Time”). The obligations of the parties to exchange Subject Debentures for New Debentures are subject to the satisfaction (or waiver) at or prior to the Closing Time of the conditions precedent set forth in Section 2
for the benefit of the Holder and Section 3 for the benefit of the Company. 
 1.4 On or prior to the Closing Time, the Holder shall
deliver the Holder’s Subject Debentures to the Company, duly endorsed to the Company or accompanied by an assignment duly endorsed to the Company in a form reasonably acceptable to the Trustee and the Company, or by means of the book-entry or
DWAC (automated system for deposits and withdrawals of securities) transfer procedures of The Depositary Trust Company (“DTC”), as depositary for the Subject Debentures, or by other means of transfer reasonably acceptable to the
Company and the Trustee. The New Debentures will be represented by one or more definitive global securities in book-entry form which will be deposited by or on behalf of the Company with DTC or its designated custodian. On or prior to the Closing
Time, the Company will deliver the New Debentures to the Holder, against delivery by or on behalf of the Holder of the Holder’s Subject Debentures, by causing DTC to credit the New Debentures to the account of the Holder at DTC. The Company is
responsible for the payment of any documentary, stamp or other transfer taxes that may be payable in respect of the transfer of the Subject Debentures. 

  
 -2-

 1.5 The Holder hereby agrees that upon delivery of the Holder’s New Debentures and unpaid interest
thereon, the Subject Debentures shall be cancelled by the Trustee and the Company shall have no further obligation to the Holder or any other person thereunder. 
 1.6 The parties acknowledge and agree that the terms and conditions of the New Debentures will be governed by the terms and conditions of the New Debentures and the New Indenture. 

1.7 The Company and the Holder hereby acknowledge and agree that the exchange of the Subject Debentures for New Debentures shall constitute a payment
made by or on behalf of the Company under or with respect to the Subject Debentures for the purposes of Section 2.16 of the Indenture and, accordingly, subject to the limitation set forth therein, the Company agrees to pay all “Additional
Amounts”. 
 SECTION 2 
 CONDITIONS PRECEDENT TO THE HOLDER’S OBLIGATION TO CLOSE 
 The
Holder’s obligation to deliver, transfer and assign the Holder’s Subject Debentures and to take the other actions required to be taken by the Holder pursuant to this Agreement are subject to the satisfaction, or waiver, of the following
conditions: 
 2.1 The representations and warranties of the Company made in Section 5 of this Agreement shall be true and correct in all
respects, as of the date hereof and as of the Closing Time as though then made (except for representations and warranties that speak as of a specific date or time which shall be true and correct in all respects as of such specified date or time).

 2.2 The Company shall have duly performed and complied with all of the obligations that the Company is required to perform or to comply with
pursuant to this Agreement on or prior to the Closing Time. 
 2.3 The Company and the Trustee shall have executed the New Indenture, in
substantially the form and substance attached as Schedule “B” hereto, with changes as agreed by the parties, for the issuance of the New Debentures. 
 2.4 The common shares of the Company issuable upon conversion or maturity of the New Debentures (the “Shares”) shall have been approved for listing by the NYSE MKT LLC stock exchange (the
“NYSE MKT”) and conditionally approved (subject only to compliance with the documentary filing requirements set forth in a conditional approval letter of the TSX) for listing by the Toronto Stock Exchange (the “TSX”
and together with the NYSE MKT, the “Exchanges”). 
 2.5 The New Debentures shall be qualified for settlement through the
book-entry or DWAC (automated system for deposits and withdrawals of securities) transfer procedures of DTC. 
 2.6 The Holder receiving at the
Closing Time legal opinions dated the date of the closing of the purchase and exchange transaction contemplated by this agreement, addressed to the 

  
 -3-

 
Holder, (i) from Fasken Martineau DuMoulin LLP, Canadian counsel to the Company in respect of the matters set forth in Schedule “C”, (ii) from Davis Graham & Stubbs
LLP, the Company’s United States counsel, in respect of the matters set forth in Schedule “D-1” and (iii) from Hughes Hubbard & Reed LLP, the Company’s New York counsel, in the form attached as Schedule
“D-2”; in giving the opinions contemplated above, counsel to the Company shall be entitled to deliver opinions of local counsel, and counsel to the Company and any such local counsel shall be entitled to rely, as to matters of fact only,
upon, among other things, the representations and warranties of Holder contained in this Agreement, certificates from the Company signed by officers of the Company in positions to have knowledge of such facts and their accuracy, certificates of such
public officials and other persons as are necessary or desirable and certificates of the Company’s registrar and transfer agent as to the number of capital stock of the Company issued and outstanding. 

2.7 No action or proceeding shall be pending or threatened by any person to enjoin, restrict or prohibit any of the transactions contemplated by this
Agreement and there shall not be any order, ruling or decision issued or granted by a court or other regulatory or administrative authority that has the effect of prohibiting or restricting the issuance of the New Debentures or the Shares on
conversion or maturity of the New Debentures and no proceedings for such purposes have been instituted or are pending or threatened. 
 2.8 At
the closing of the transactions hereunder Debentures in an aggregate principal amount of no less than US$74,510,000 (including the Debentures being exchanged pursuant hereto) shall simultaneously be exchanged for new debentures being issued pursuant
to the New Indenture pursuant to agreements substantially identical to this Agreement and on terms identical to the terms hereunder. 
 SECTION 3 
 CONDITIONS PRECEDENT TO THE COMPANY’S OBLIGATION TO
CLOSE 
 The Company’s obligation to issue the New Debentures in exchange for the Subject Debentures and to take the
other actions required to be taken by the Company pursuant to this Agreement are subject to the satisfaction, or waiver, of the following conditions: 
 3.1 The representations and warranties of the Holder made in Section 4 and in Schedule “E” shall be true and correct in all respects, as of the date hereof and as of the Closing Time as
though then made (except for representations and warranties that speak as of a specific date or time which shall be true and correct in all respects as of such specified date or time). 
 3.2 The Holder shall have duly performed and complied with all of the obligations that the Holder is required to perform or to comply with pursuant to this Agreement on or prior to the Closing Time.

 3.3 The Shares shall have been approved for listing by the NYSE MKT and conditionally approved for listing by the TSX (subject only to
compliance with the documentary filing requirements of the TSX set forth in a conditional approval letter of the TSX). 

  
 -4-

 3.4 The Trustee shall have executed the New Indenture regarding the issuance of the New Debentures.

 3.5 No action or proceeding shall be pending or threatened by any person to enjoin, restrict or prohibit any of the transactions contemplated
by this Agreement and no order, ruling or decision has been or will have been issued or granted by a court or other regulatory or administrative authority that has the effect of prohibiting or restricting any distribution or trade of the New
Debentures or the Shares issuable thereunder and no proceedings for such purposes have been instituted or are pending or threatened. 
 SECTION 4 
 REPRESENTATIONS AND WARRANTIES OF THE HOLDER

 The Holder, severally and not jointly, represents and warrants to the Company with respect to only itself, as of the date
hereof and as of Closing Time that: 
  

	 	(a)	The execution, delivery and performance by the Holder of this Agreement, and the consummation of the transactions contemplated hereby are within the powers of the
Holder and have been or will have been duly authorized by all necessary action on the part of the Holder, and that this Agreement constitutes a valid and binding agreement of the Holder, enforceable in accordance with its terms, except (i) as
limited by applicable bankruptcy, insolvency, reorganization, moratorium, and other laws of general application affecting enforcement or creditors’ rights generally or (ii) as limited by laws relating to the availability of specific
performance, injunctive relief, or other equitable remedies. 

  

	 	(b)	The execution, delivery and performance by the Holder of this Agreement and the consummation of the transactions contemplated hereby require no order, license, consent,
authorization or approval of, or exemption by, or action by or in respect of, or notice to, or filing or registration with, any governmental body, agency or official on the part of the Holder. 

 

	 	(c)	The execution, delivery and performance by the Holder of this Agreement, and the consummation of the transactions contemplated by this Agreement, do not and will not
(i) violate the articles of incorporation or bylaws (or similar constituent documents) of the Holder, (ii) violate any agreement to which the Holder is a party or by which the Holder or any of its property or assets is bound, or
(iii) violate any law, rule, regulation, judgment, injunction, order or decree applicable to the Holder, except in the case of clauses (ii) and (iii) above, for such violations which would not, individually or in the aggregate,
reasonably be expected to have a material adverse effect on the ability of the Holder to perform its obligations hereunder. 

  

	 	(d)	 As of the Closing Time, the Holder will be the beneficial owner of the Subject Debentures, free and clear of any encumbrances, including, without
limitation, any charge, claim, condition, equitable interest, lien, option, 

  
 -5-

	 	
pledge, security interest, right of first refusal, or restriction of any kind, including any restriction on use, voting, transfer, receipt of income, or exercise of any other attribute of
ownership (other than any restrictions on transfer that may be applicable under any applicable securities laws) (collectively, “Encumbrances”). 

 

	 	(e)	The Holder has received all the information it considers necessary or appropriate to determine whether to exchange the Subject Debentures for the New Debentures
pursuant to this Agreement. The Holder represents that (i) the Company has not made any representation or warranty, express or implied, except as set forth herein, regarding any aspect of the exchange of the Subject Debentures for the New
Debentures, the operations or financial condition of the Company or the value of the Subject Debentures or the New Debentures; (ii) the Holder has conducted its own evaluation of the Company, the New Debentures and the transactions contemplated
in this Agreement; (iii) the Holder is relying upon the representations in this Agreement and its own independent evaluation of the Company, the Subject Debentures, and the New Debentures and has had access to such information concerning the
Company, the Subject Debentures and the New Debentures as it deems necessary to enable it to make an informed investment decision concerning the exchange of the New Debentures for the Subject Debentures; (iv) the Holder is sophisticated and has
knowledge and experience in business and financial matters and is capable of evaluating the risks and merits of an investment in the New Debentures; (v) the Holder is able to bear the economic risk of the loss of its entire investment in the
New Debentures; and (vi) neither the Company nor any of its affiliates is acting or has acted as an advisor to the Holder in deciding to invest in the New Debentures. 

 

	 	(f)	The Holder has had an opportunity to evaluate the applicable tax consequences of the exchange of the Subject Debentures for the New Debentures and the transactions
contemplated by this Agreement with its own tax advisors. With respect to its evaluation of the tax consequences, the Holder is relying on such advisors and not, except as set forth herein, on any statements or representations of the Company.

  

	 	(g)	The Holder acknowledges that the Company’s offer of an exchange of New Debentures for the Subject Debentures was not, to the Holder’s knowledge, part of a
general solicitation. The Holder acknowledges that this Agreement and the transactions contemplated hereunder have been negotiated at arms-length and that it is independently represented by legal advisors. 

 

	 	(h)	The Holder acknowledges that: 

  

	 	(i)	No federal, state or provincial securities commission or similar regulatory authority has reviewed or passed on the merits, fairness or advisability of the New
Debentures; 

  
 -6-

	 	(ii)	There is no government or other insurance covering the New Debentures; 

  

	 	(iii)	There are risks associated with the purchase of the New Debentures and the Holder is aware of the risks, including the risk factors in the Company’s Annual Report
on Form 10-K for the year ended December 31, 2011 filed under the United States Securities Exchange Act of 1934, as amended (the “U.S. Exchange Act”) and the risk factors set forth in Schedule “G” hereto; and

  

	 	(iv)	The Company is relying upon the truth of the representations and warranties in this Section 4 and Schedule “E” in connection with the exchange of the
Subject Debentures for New Debentures hereunder. 

  

	 	(i)	The Holder represents and warrants to the Company that the Holder is not an “affiliate” of the Company as such term is defined in Rule 12b-2 of the U.S.
Exchange Act. 

  

	 	(j)	The Holder hereby makes the representations in Schedule “E” hereto. 

 

	 	(k)	The Holder is not resident in any province or territory of Canada and the Holder agrees and acknowledges that no offer to purchase the Debentures, solicitation of an
offer to sell the Debentures, acceptance of an offer to sell the Debentures or any combination of the foregoing was made to the Holder in any province or territory of Canada. 

 

	 	(l)	The Holder is acquiring the New Debentures as principal for its own account and not for the benefit of any other person and not with a view to the resale or
distribution of all or any of the New Debentures; provided, however, that by making the representations herein, the Holder does not agree to hold any of the New Debentures for any minimum or other specific term and reserves the right,
subject to the provisions of Section 7.5, to dispose any of the New Debentures at any time in accordance with or pursuant to a registration statement or an exemption under the U.S. Securities Act (as defined below). 

 

	 	(m)	The Holder is at arm’s length with, and is not an insider or affiliate (each, within the meaning of the Canadian Securities Laws (as defined below)) of the
Company. The Holder is not and will not become a “control person” of the Company by virtue of the acquisition of the New Debentures and does not intend to act in concert with any other person to form a control group of the Company.

  

	 	(n)	The Holder has not received, nor has it requested any offering memorandum (as defined under Canadian Securities Law) or any other document from the Company describing
the business and affairs of the Company with respect to the transaction contemplated by this Agreement or the New Debentures or the Shares. 

  
 -7-

	 	(o)	The Holder acknowledges that the Company may be required by applicable Canadian Securities Laws to disclose to certain regulatory authorities the identity of the Holder
and certain other information relating to its acquisition of New Debentures. 

  

	 	(p)	The Holder and its advisors have had a full opportunity to, and have reviewed, the New Indenture and the form of New Debenture, and have had an opportunity to and have
asked, the Company all questions and received all the information they consider necessary or appropriate in regards thereto. 

 SECTION 5 
 REPRESENTATIONS AND WARRANTIES OF COMPANY 

The Company represents and warrants to the Holder, as of the date hereof and as of the Closing Time, that: 

 

	 	(a)	The execution, delivery and performance by the Company of this Agreement and the New Indenture, and the consummation of the transactions contemplated hereby are within
the powers of the Company and have been or will have been duly authorized by all necessary action on the part of the Company, and that this Agreement and the New Indenture constitute valid and legally binding agreements of the Company, enforceable
in accordance with their terms, except (i) as limited by applicable bankruptcy, insolvency, reorganization, moratorium, fraudulent conveyance and other laws of general application affecting enforcement or creditors’ rights generally or
(ii) as limited by laws relating to the availability of specific performance, injunctive relief, or other equitable remedies (collectively, the “Enforceability Exceptions”). 

 

	 	(b)	Assuming the accuracy of the representations of the Holder set forth herein, the execution, delivery and performance by the Company of this Agreement and the
consummation of the transactions contemplated hereby require no order, license, consent, authorization or approval of, or exemption by, or action by or in respect of, or notice to, or filing or registration with, any governmental body, agency or
official on the part of the Company, except for such filings as have been made or will be made after the Closing Time within such times prescribed by applicable securities laws, and such consents, approvals, authorizations, registrations or
qualifications as may be required under provincial or state securities or blue sky laws or the rules of any applicable stock exchange. 

  

	 	(c)	 The execution, delivery and performance by the Company of this Agreement, and the consummation of the transactions contemplated by this Agreement, do
not and will not (i) violate the articles of arrangement or bylaws of the Company (or other constituent documents), (ii) violate any agreement to which the Company is a party or by which the Company or any of its property or assets is
bound, (iii) violate any law, rule, regulation, judgment, 

  
 -8-

	 	
injunction, order or decree applicable to the Company, except where the violations in (ii) and (iii) would not, in the aggregate, reasonably be expected to have a Material Adverse
Effect. As used herein, “Material Adverse Effect” means any material adverse effect, individually or in the aggregate with all other effects, on (i) the business, properties, assets, operations, results of operations, condition
(financial or otherwise) or prospects of the Company and its subsidiaries, individually or taken as a whole, or on the transactions contemplated hereby and the New Indenture or by the agreements and instruments to be entered into in connection
herewith or therewith or (ii) the Company’s authority or ability to perform its obligations hereunder or under the New Indenture. 

  

	 	(d)	The New Debentures have been duly authorized by the Company and, when duly executed, authenticated, issued and delivered as provided in the New Indenture and exchanged
for the Subject Debentures as provided herein, will be duly and validly issued and outstanding (and the issuance of the New Debentures will not be subject to any taxes in Canada or any liens or charges or any preemptive or similar rights) and will
constitute valid and legally binding obligations of the Company enforceable against the Company in accordance with their terms, subject to the Enforceability Exceptions, and will be entitled to the benefits of the New Indenture.

  

	 	(e)	Upon issuance and delivery of the New Debentures in accordance with this Agreement and the New Indenture, the New Debentures will be convertible at the option of the
holder thereof into Shares in accordance with the terms of the New Debentures and the New Indenture; the Shares issuable upon conversion or maturity of the New Debentures have been duly authorized and reserved and, when issued upon conversion of the
New Debentures in accordance with the terms of the New Debentures and the New Indenture, will be validly issued, fully paid and non-assessable, and the issuance of the Shares will not be subject to any taxes in Canada or any liens or charges or any
preemptive or similar rights. 

  

	 	(f)	On or before the Closing Time, the Shares issuable upon conversion or maturity of the New Debentures shall have been approved for listing on the NYSE MKT and
conditionally approved for listing on the TSX (subject only to compliance with the documentary filing requirements of the TSX set forth in a conditional approval letter of the TSX). 

 

	 	(g)	The Company has made no general solicitation in connection with the exchange of the Subject Debentures for the New Debentures. 

 

	 	(h)	The Company is not, and has never been, an issuer identified in Rule 144(i)(1) under the U.S. Securities Act of 1933 (the “U.S. Securities Act”).

  

	 	(i)	The New Debentures are an “excluded obligation” for purposes of subsection 214(8) of the Income Tax Act (Canada). 

  
 -9-

	 	(j)	Since December 31, 2008, the Company has (i) been subject to and in compliance in all material respects with the reporting requirements of Section 13 or
Section 15(d) of the U.S. Securities Exchange Act of 1934 (together with the U.S. Securities Act, the “U.S. Securities Laws”); (ii) properly filed on a timely basis with the NYSE MKT, all material reports and documents
required to have been filed by it pursuant to the rules and regulations of the NYSE MKT, and (iii) properly filed on a timely basis all material reports or other documents required to have been filed by it with the securities commission or
similar regulatory body of each province of Canada, the TSX or any other applicable Canadian governmental authorities pursuant to applicable securities statutes of the provinces of Canada, the respective rules and regulations under such statutes,
and applicable published policy statements, instruments, notices and blanket orders of the securities regulatory authorities in the provinces of Canada (the “Canadian Securities Laws”), except in each case where failure to file such
reports or other documents would not have a material adverse effect; true and complete copies of all such reports and other documents are available upon request. 

 

	 	(k)	The Company’s common shares are posted and listed for trading on the Exchanges and the Company is not in default in any material respect of any of the listing
requirements of the Exchanges. 

  

	 	(l)	Each document filed under applicable Canadian Securities Laws and each document filed with the SEC since December 31, 2011 (the “Company Public Disclosure
Documents”) pursuant to Section 13(a) or 15(d) of the U.S. Exchange Act complied when so filed in all material respects with U.S. Securities Laws and Canadian Securities Laws, as applicable; and none of such documents contained, at the
time of its filing, any untrue statement of a material fact or omitted at the time of its filing to state a material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were
made, not misleading, except to the extent superseded by any subsequent information or statement in a subsequent Company Public Disclosure Document filed prior to the date hereof. 

 

	 	(m)	No order, ruling or determination having the effect of ceasing, suspending or restricting trading in any securities of the Company or prohibiting the sale of the New
Debentures or any of the Company’s issued securities has been issued and no proceeding, investigations or inquiries for such purpose is pending or, to the knowledge of the Company threatened; 

 

	 	(n)	The Company is a “reporting issuer” or its equivalent under the securities laws of each of the Canadian provinces, and is not noted as being in default.

  

	 	(o)	No material change relating to the Company on a consolidated basis has occurred as of the date hereof with respect to which the requisite material change report has not
been filed and no such disclosure has been made on a confidential basis that remains subject to confidentiality. 

  
 -10-

	 	(p)	The Company’s common shares are registered under Section 12(b) of the U.S. Exchange Act; and accordingly, the Company is subject to the reporting requirements
of Section 13 of the U.S. Exchange Act. 

  

	 	(q)	The Company meets the general eligibility requirements for use of Form S-3 under the U.S. Securities Act. 

 

	 	(r)	The Company has complied with the requirements of the Canadian Securities Laws to which it is subject and any documents filed by the Company pursuant to Canadian
Securities Laws do not contain any misrepresentation as of the date hereof (as defined in the Securities Act (Ontario)); provided that the foregoing shall not apply with respect to statements contained in documents relating solely to the
Holder or provided by the Holder and to the extent any information or statement in a Company Public Disclosure Document or document filed pursuant to applicable Canadian Securities Laws has been superseded by any subsequent information or statement
in a subsequent Company Public Disclosure Document filed prior to the date hereof. 

  

	 	(s)	The New Debentures are not, and as of the Closing Time will not be, (i) listed on a national securities exchange in the United States registered under
Section 6 of the U.S. Exchange Act, (ii) quoted in an “automated inter-dealer quotation system”, as such term is used in the U.S. Exchange Act, or (iii) convertible or exchangeable into common shares at an effective
conversion premium (calculated as specified in paragraph (a)(6) of Rule 144A promulgated under the U.S. Securities Act) of less than 10 percent for securities so listed. 

 

	 	(t)	No registration or filing under the Trust Indenture Act of 1939, as amended, relating to the New Indenture (the “Form T-3”) is required to be
filed with the SEC. 

  

	 	(u)	No Event of Default (as defined in the Indenture) has occurred that is continuing as of the date hereof. 

 

	 	(v)	The Company is a company duly organized and is existing in good standing under the laws of Canada. 

 

	 	(w)	No commission or other remuneration based on arrangements made by the Company shall be payable by the Holder in connection with the transactions contemplated hereby.

  

	 	(x)	Assuming the accuracy of the representations of the Holder set forth herein, and subject to the provisions of Section 7.5, the Shares will be freely transferable
without restriction by the Holder. The certificates representing the Shares will not bear any restrictive legend under the U.S. Securities Act or otherwise. 

  
 -11-

	 	(y)	Except for any information that is disclosed in the 8-K Filing (as defined below), the Company confirms that neither it nor any other person acting on its behalf has
provided any Holder or its agents or counsel with any information that constitutes or could reasonably be expected to constitute material, non-public information. The Company understands and confirms that the Holder will rely on the foregoing
representations in effecting transactions in securities of the Company. No event or circumstance other than those described in the 8-K Filing has occurred or information exists with respect to the Company or any of its subsidiaries or its or their
business, properties, prospects, operations or financial conditions, which, under applicable law, rule or regulations, requires public disclosure or announcement by the Company but which has not been so publicly announced or disclosed. No Material
Adverse Effect currently exists. 

  

	 	(z)	For United States Federal income tax purposes, the Company will treat the exchange of the Subject Debentures for the New Debentures as a recapitalization within the
meaning of Section 368(a)((1)(E) of the Internal Revenue Code of 1986, as amended, and the Company will file all Tax returns, reports and other forms in a manner consistent with that treatment. 

 

	 	(aa)	The Company (i) has an active non-securities business; (ii) has not held itself out as being in the business of trading in securities; (iii) trades in
securities infrequently; (iv) has not, and does not expect to be, compensated for trading in securities; (v) does not act as an intermediary (as defined under applicable securities laws); (vi) does not produce, or intend to produce, a
profit from trading in securities; (vii) does not employ or otherwise contract individuals to perform activities on its behalf that are similar to those performed by a registrant under applicable securities laws (other than underwriting in the
normal course of a distribution or trading for its own account); (viii) does not solicit investors actively; and (ix) does not act as an intermediary by investing client money in securities. 

SECTION 6 
 EXEMPT TRANSACTION 
 6.1 The Holder understands and acknowledges that the New Debentures
and the Shares have not been and will not be registered under the U.S. Securities Act or any applicable state securities laws and that the exchange of the Subject Debentures for the New Debentures hereby is intended to be exempt from such
registration requirements pursuant to Section 4(2) of the U.S. Securities Act and exemptions from state securities laws, and will not be subject to resale restrictions in the U.S. under applicable U.S. securities laws and under the rules of the
NYSE MKT, which exemptions and absence of resale restrictions depend upon, among other things, the accuracy of the Holder’s representations set forth herein. For the purposes of Rule 144, the Company acknowledges that the holding period of the
New Debentures (including the corresponding Shares into which they are converted) may be tacked onto the holding period of the Subject Debentures, and the Company agrees not to take any position contrary to this Section 6.1 unless such position
is required by subsequent 

  
 -12-

 
changes in applicable laws and regulations make such position contrary to such applicable laws and regulations. The Company agrees to take all actions, including, without limitation, the issuance
by its legal counsel of any necessary legal opinions required by its transfer agent or otherwise, necessary to (i) issue the New Debentures on the Closing Date without restriction and not containing any restrictive legends without the need for
any action by any Holder, and (ii) issue the Shares upon the conversion or maturity of the New Debentures without restriction and not containing any restrictive legends without the need for any action by any Holder other than as may be
reasonably requested by Company or its counsel including to assure compliance with the requirements of Rule 144. 

SECTION 7 
 COVENANTS 
 7.1 The Company will reserve and keep available at all times, free of
pre-emptive rights, Shares for the purpose of enabling the Company to satisfy all obligations to issue the Shares upon conversion or maturity of the New Debentures. The Shares issuable upon conversion or maturity of the New Debentures are duly
listed, and admitted and authorized for trading, subject only to official notice of issuance and approval, on the NYSE MKT and have been conditionally approved for listing on the TSX (subject only to compliance with the documentary filing
requirements of the TSX set forth in a conditional approval letter of the TSX). The Company shall use reasonable best efforts to secure the listing of all of the Shares on the NYSE MKT and the TSX and commercially reasonable efforts to maintain such
listings until the Maturity Date of the New Debentures. The Company shall pay all fees and expenses in connection with satisfying its obligations under this Section 7.1. 
 7.2 While the New Debentures remain outstanding, the Company will, during any period in which the Company is either not subject to or not in compliance with Section 13 or 15(d) of the U.S. Exchange
Act, furnish to holders of the New Debentures, prospective purchasers of the New Debentures designated by such holders, in each case upon request, the information required to be delivered pursuant to Rule 144A(d)(4) under the U.S. Securities Act.

 7.3 The Company agrees to take reasonable best efforts, including, without limitation, the issuance by its legal counsel of any reasonably
necessary legal opinions, necessary to issue Shares that are freely tradable on the NYSE MKT without restriction and not containing any restrictive legend as and to the extent permitted by Rule 144 of the U.S. Securities Act without the need for any
action by the Holder other than as may be reasonably requested by Company or its counsel including to assure compliance with the requirements of Rule 144. 
 7.4 On or prior to 8:30 a.m., New York City time, on the trading day immediately succeeding the date of this Agreement, the Company shall issue a press release announcing the entry into this Agreement and
file a Form 8-K with the Securities and Exchange Commission (the “SEC”) describing the terms of the transactions contemplated by this Agreement and the New Indenture in the form required by the U.S. Exchange Act, and attaching this
Agreement, the New Indenture and such other agreements ancillary thereto as required under the U.S. securities laws as exhibits to such filing (including all attachments, the “8-K Filing”). From and after the 8-K Filing, no Holder
shall be in 

  
 -13-

 
possession of any material, nonpublic information received from the Company, any of its subsidiaries or any of its respective officers, directors, employees or agents, that is not disclosed in
the 8-K Filing. The Company shall provide the Holder with a copy of the press release and 8-K Filing and an opportunity to review and comment thereon prior to its release or filing, as applicable. The Company shall not, and shall cause each of its
subsidiaries and its and their respective officers, directors, employees and agents, not to, provide any Holder with any material, non-public information regarding the Company or any of its subsidiaries from and after the filing of the 8-K Filing,
without the express written consent of the Holder. If a Holder has, or believes it has, received any such material, nonpublic information regarding the Company or any of its subsidiaries from the Company, any of its subsidiaries or any of their
respective officers, directors, or agents, other than as required in writing by the Holder, it may provide the Company with written notice thereof. The Company shall, within five (5) business days of receipt of such notice, make public
disclosure of such material, nonpublic information. In the event of a breach of the foregoing covenant by the Company, any of its subsidiaries, or any of its or their respective officers, directors, employees and agents, in addition to any other
remedy provided herein or in the New Indenture, a Holder shall have the right to make a public disclosure, in the form of a press release, public advertisement or otherwise, of such material, nonpublic information without the prior approval by the
Company, its subsidiaries, or any of its or their respective officers, directors, employees or agents. No Holder shall have any liability to the Company, its subsidiaries, or any of its or their respective officers, directors, employees,
stockholders or agents for any such disclosure. Subject to the foregoing, neither the Company, its subsidiaries nor any Holder shall issue any press releases or any other public statements with respect to the transactions contemplated hereby;
provided, however, that the Company shall be entitled, without the prior approval of any Holder, to make any press release or other public disclosure with respect to such transactions (i) in substantial conformity with the 8-K Filing and
contemporaneously therewith and (ii) as is required by applicable law and regulations (provided that in the case of clause (i) the Holder shall be consulted by the Company in connection with any such press release or other public
disclosure prior to its release). Without the prior written consent of the Holder, and except as contemplated by the prior subsection (i) or as required by applicable law or regulation, neither the Company nor any of its subsidiaries or
affiliates shall disclose the name of the Holder in any filing, announcement, release or otherwise. 
 7.5 The Holder covenants and agrees that
it will not, during the period ending on the date that is four (4) months plus one (1) day after the date of issuance of the New Debentures pursuant to the terms of this Agreement, sell or otherwise effect a trade of any of the New
Debentures held by the Holder, or any Shares issued to the Holder upon conversion of such New Debentures, to any person resident in Ontario, Canada or any person acquiring such New Debentures or Shares for the benefit of another person resident in
Ontario, Canada, other than in a transaction to which the prospectus or registration requirements applicable in Ontario, Canada will be deemed/construed to apply (subject to available exemptions therefrom). 

  
 -14-

 SECTION 8 
 SURVIVAL; INDEMNITY 
 The representations and warranties of the parties
hereto contained in this Agreement shall survive the consummation of the transactions contemplated hereby. The Company agrees to indemnify and protect the Holder, its employees, contractors, agents and attorneys and its successors and assigns and
hold them harmless from and against any and all losses, liabilities, costs and expenses (including reasonable attorneys’ fees) incurred as a result of (a) the breach by the Company of any of its representations, warranties or covenants
contained in this Agreement or (b) any cause of action, suit or claim brought or made against (i) the Holder by a third party (including for these purposes a derivative action brought on behalf of the Company) and arising out of or
resulting from the execution, delivery, performance or enforcement of this Agreement or the New Indenture or any other certificate, instrument or document contemplated hereby or thereby which cause of action, suit or claim does not arise out of
arrangements or regulatory requirements relating to the Holder that do not relate to the Company or (ii) the Holder by a third party and arising out of or resulting from any disclosure made by the Holder pursuant to Section 7.4. To the
extent that the foregoing undertaking by the Company may be unenforceable for any reason, the Company shall make the maximum contribution to the payment and satisfaction of each of the losses, liabilities, costs and expenses (including reasonable
attorneys’ fees) which is permissible under applicable law. 
 SECTION 9 

NOTICES 

All notices, requests and other communications to any party hereunder shall be in writing (including facsimile transmission) and shall be
given, 
 if to a Holder, as indicated on the signature pages hereto, 
 with a copy (for informational purposes only) to: 
  

			
	 Schulte Roth & Zabel LLP
 919 Third Avenue
 New York, New York 10022

	Telephone:	  	(212) 756-2000
	Facsimile:	  	(212) 593-5955
	Attention:	  	Eleazer N. Klein, Esq.
	Email:	  	eleazer.klein@srz.com

  
 -15-

 if to the Company to: 

Golden Star Resources Ltd. 
 Suite 300-10901 West Toller Drive 
 Littleton, Colorado 80127-6312 

Attention: Bruce Higson-Smith, Senior Vice President Finance and Corporate Development 

Fax: 303-830-9094 
 With a copy to: 
 Davis Graham & Stubbs LLP 

1550 Seventeenth Street, Suite 500 
 Denver, Colorado, USA M5J 2S1 
 Attn: Michelle Shepston 

Fax: 303-893-1379 
 and to: 
 Fasken Martineau DuMoulin LLP 

Suite 2400, 333 Bay Street, Bay Adelaide Centre, Box 20 
 Toronto, Ontario, Canada M5H 2T6 
 Attn: John Turner 

Fax: 416-364-7813 
 or to such
other address, e-mail address or telecopy number and with such other copies as such party may hereafter specify for the purpose of notice. All such notices, requests and other communications shall be deemed received on the date of receipt by the
recipient thereof if received prior to 6 p.m. (New York time) in the place of receipt and such day is a business day in the place of receipt. Otherwise, any such notice, request or communication shall be deemed not to have been received until the
next succeeding business day in the place of receipt. 
 SECTION 10 

AMENDMENTS AND WAIVERS 
 Any provision of this Agreement may be amended or waived if, but only if, such amendment or waiver is in writing and is signed, in the case of an amendment, by each party to this Agreement, or in the case
of a waiver, by such party against whom the waiver is to be effective. No failure or delay by any party in exercising any right, power or privilege hereunder shall operate as a waiver thereof nor shall any single or partial exercise thereof preclude
any other or further exercise thereof or the exercise of any other right, power or privilege. The rights and remedies herein provided shall be cumulative and not exclusive of any rights or remedies provided by law. 

  
 -16-

 SECTION 11 

EXPENSES 

The Company shall not be responsible for the fees or expenses of any person engaged by any Holder in connection with the transaction
contemplated by this Agreement and all costs and expenses incurred in connection with this Agreement shall be paid by the party incurring such cost or expense; provided, however, that the reasonable fees and expenses of one legal advisor for the
holders participating in the exchange in each of Canada and the United States in connection with the transactions contemplated hereby and in connection with our previous potential exchange transactions shall be paid and reimbursed by the Company.

 SECTION 12 
 SUCCESSORS AND ASSIGNS 
 The provisions of this Agreement shall be binding
upon and inure to the benefit of the parties hereto and their respective successors and assigns; provided that no party may assign, delegate or otherwise transfer any of its rights or obligations under this Agreement without the consent of each
other party hereto. 
 SECTION 13 
 GOVERNING LAW 
 All questions concerning the construction, validity,
enforcement and interpretation of this Agreement shall be governed by the internal laws of the State of New York, without giving effect to any choice of law or conflict of law provision or rule (whether of the State of New York or any other
jurisdictions) that would cause the application of the laws of any jurisdictions other than the State of New York. Each party hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in The City of New York,
Borough of Manhattan, for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein, and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding,
any claim that it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is brought in an inconvenient forum or that the venue of such suit, action or proceeding is improper. Each party hereby
irrevocably waives personal service of process and consents to process being served in any such suit, action or proceeding by mailing a copy thereof to such party at the address for such notices to it under this Agreement and agrees that such
service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any manner permitted by law. EACH PARTY HEREBY IRREVOCABLY WAIVES ANY
RIGHT IT MAY HAVE, AND AGREES NOT TO REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN CONNECTION WITH OR ARISING OUT OF THIS AGREEMENT OR ANY TRANSACTION CONTEMPLATED HEREBY. 

  
 -17-

 SECTION 14 

COUNTERPARTS; THIRD PARTY BENEFICIARIES 
 This Agreement may be signed in any number of counterparts, each of which shall be an original, with the same effect as if the signatures thereto and hereto were upon the same instrument. This Agreement
shall become effective when each party hereto shall have signed this Agreement and the Closing Time has occurred. No provision of this Agreement shall confer upon any person other than the parties hereto any rights or remedies hereunder. 

SECTION 15 
 ENTIRE AGREEMENT 
 This Agreement and the New Indenture constitute the
entire agreement between the parties with respect to the subject matter of this Agreement and the New Indenture and supersede all prior agreements and understandings, both oral and written, between the parties with respect to the subject matter of
this Agreement and the New Indenture. 
 SECTION 16 

CAPTIONS 

The captions herein are included for convenience of reference only and shall be ignored in the construction or interpretation hereof.

 SECTION 17 
 SEVERABILITY 
 If any provision of this Agreement is prohibited by law or
otherwise determined to be invalid or unenforceable by a court of competent jurisdiction, the provision that would otherwise be prohibited, invalid or unenforceable shall be deemed amended to apply to the broadest extent that it would be valid and
enforceable, and the invalidity or unenforceability of such provision shall not affect the validity of the remaining provisions of this Agreement so long as this Agreement as so modified continues to express, without material change, the original
intentions of the parties as to the subject matter hereof and the prohibited nature, invalidity or unenforceability of the provision(s) in question does not substantially impair the respective expectations or reciprocal obligations of the parties or
the practical realization of the benefits that would otherwise be conferred upon the parties. The parties will endeavor in good faith negotiations to replace the prohibited, invalid or unenforceable provision(s) with a valid provision(s), the effect
of which comes as close as possible to that of the prohibited, invalid or unenforceable provision(s). 
 SECTION 18

 FURTHER ASSURANCES 
 Each party hereby agrees to execute any additional documents and take any additional actions as may be reasonably necessary to carry out the terms of this Agreement. 

  
 -18-

 SECTION 19 

SEDAR AND EDGAR FILING 
 The Holder understands and acknowledges that the Company may be required pursuant to applicable securities laws to file this Agreement on SEDAR and EDGAR. By completing this Agreement, the Holder consents
to such disclosure and authorizes the Company, if required, to file this Agreement on SEDAR and EDGAR. If required by applicable Canadian Securities Laws, the Holder authorizes the indirect collection of personal information pertaining to the Holder
by the Ontario Securities Commission (the “OSC”) and acknowledges and agrees that the Holder has been notified by the Company (i) of the delivery to the OSC of personal information pertaining to the Holder, including, without
limitation, the full name, residential address and telephone number of the Holder, the number and type of securities purchased and the number and type of securities surrendered in respect of the New Debentures, (ii) that this information is
being collected indirectly by the OSC under the authority granted to it in securities legislation, (iii) that this information is being collected for the purposes of the administration and enforcement of the securities legislation of Ontario,
and (iv) that the title, business address and business telephone number of the public official in Ontario who can answer questions about the OSC’s indirect collection of the information is the Administrative Support Clerk of the Ontario
Securities Commission, Suite 1903, Box 55, 20 Queen Street West, Toronto, Ontario, Canada M5H 3S8, Telephone: +1 (416) 593-3684. 
 SECTION 20 
 MOST FAVORED NATION 

The Company hereby represents and warrants as of the date hereof and covenants and agrees that for a period of 45 days after the date
hereof none of the terms offered to any person or entity with respect to any exchange, amendment or waiver (each an “Exchange Document”) relating to the Debentures or the New Debentures, is or will be more favorable to such person
or entity than those terms applicable to New Debentures owned by the Holder, and this Agreement, the New Indenture and the New Debentures shall be, without any further action by the Holder or the Company, deemed amended and modified in an
economically and legally equivalent manner such that the Holder shall receive the benefit of the more favorable terms contained in any such Exchange Document. Notwithstanding the foregoing, the Company agrees, at its expense, to take such other
actions (such as entering into amendments to this Agreement, the New Indenture, the New Debentures or any other transaction documents ancillary thereto) as any Holder may reasonably request to further effectuate the foregoing. 

[Signature page follows] 

  
 -19-

 IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed as of the date first
written above by their respective officers thereunto duly authorized. 
  

			
	Golden Star Resources Ltd.
		
	By:	 	 /s/ Bruce Higson-Smith

		 	Name: Bruce Higson-Smith
		 	Title: Senior Vice President Finance and Corporate Development

  

			
	[HOLDER’S LEGAL NAME]
		
	By:	 	  

	 Name:
	 	
		
	 Title:

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00204-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00204-of-00352.parquet"}]]