UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM 6-K
REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934
For the month of July 2015 .
Commission File Number 001-12284
GOLDEN STAR RESOURCES LTD.
(Translation of registrant's name into English)

150 King Street West
Suite 1200
Toronto, Ontario
M5H 1J9, Canada
(Address of principal executive office)
Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.
Form 20-F ¨     Form 40-F þ
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ____
Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ____
Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.
Yes      ¨     No      þ
If “Yes” is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): ____

INCORPORATION BY REFERENCE

This Report on Form 6-K is incorporated by reference in the Registration Statements on Form S-8 of the Registrant as each may be amended from time to time (File Nos. 333-105820, 333-105821, 333-118958, 333-169047 and 333-175542) and Form F-10, as may be amended from time to time (File No. 333-196906) to the extent not superseded by documents or reports subsequently filed by us under the Securities Act of 1933 or the Securities Exchange Act of 1934, in each case as amended.

SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
GOLDEN STAR RESOURCES LTD.

Date: July 29, 2015
(signed) André van Niekerk
_______________________
André van Niekerk
Executive Vice President and Chief Financial Officer

EXHIBIT INDEX

		
Exhibit	Description of Furnished Exhibit	
99.1	Management's Discussion and Analysis of Financial Condition and Results of Operations for the three and six months ended June 30, 2015	
99.2	Condensed Interim Consolidated Financial Statements for the three and six months ended June 30, 2015	
99.3	Form 52-109F2 - Certification of Interim Filing - CEO	
99.4	Form 52-109F2 - Certification of Interim Filing - CFO	

Management's Discussion and Analysis
of Financial Condition and Results of Operations
For the Three and Six Months Ended June 30, 2015

TABLE OF CONTENTS

	

OVERVIEW OF GOLDEN STAR	 	5	
SUMMARY OF OPERATING AND FINANCIAL RESULTS	 	5	
OUTLOOK FOR 2015	 	7	
CORPORATE DEVELOPMENTS	 	7	
DEVELOPMENT PROJECTS UPDATE	 	8	
WASSA OPERATIONS	 	10	
BOGOSO OPERATIONS	 	12	
SUMMARIZED QUARTERLY FINANCIAL RESULTS	 	14	
LIQUIDITY AND FINANCIAL CONDITION	 	14	
LIQUIDITY OUTLOOK	 	15	
TABLE OF CONTRACTUAL OBLIGATIONS	 	15	
RELATED PARTY TRANSACTIONS	 	16	
OFF-BALANCE SHEET ARRANGEMENTS	 	16	
NON-GAAP FINANCIAL MEASURES	 	16	
OUTSTANDING SHARE DATA	 	19	
CRITICAL ACCOUNTING POLICIES AND ESTIMATES	 	19	
CHANGES IN ACCOUNTING POLICIES	 	19	
FINANCIAL INSTRUMENTS	 	20	
DISCLOSURES ABOUT RISKS	 	20	
CONTROLS AND PROCEDURES	 	20	
ADDITIONAL INFORMATION	 	21	

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
The following discussion and analysis provides information that management believes is relevant to an assessment and understanding of the consolidated financial condition and results of operations of Golden Star Resources Ltd. and its subsidiaries("Golden Star" or "the Company" or "we" or "our"). This Management’s Discussion and Analysis of Financial Condition and Results of Operations ("MD&A") should be read in conjunction with the Company's audited consolidated financial statements for the years ended December 31, 2014 and the unaudited condensed interim consolidated financial statements and related notes for the three and six months ended June 30, 2015 , which are prepared in accordance with International Financial Reporting Standards ("IFRS") as issued by the International Accounting Standards Board ("IASB"). This MD&A includes information available to, and is dated, July 29, 2015 . Unless noted otherwise, all amounts shown are in thousands of dollars, all currency amounts are stated in U.S. dollars and all information presented in this MD&A is prepared in accordance with IFRS.
CAUTIONARY NOTE REGARDING FORWARD-LOOKING INFORMATION
This MD&A contains "forward-looking information" within the meaning of applicable Canadian securities laws and “forward-looking statements” within the meaning of the United States Private Securities Litigation Reform Act of 1995, concerning the business, operations and financial performance and condition of Golden Star. Forward-looking information and statements include, but are not limited to, information or statements with respect to: the timing and amount of estimated future production and grades and associated cash operating costs per ounce; estimates of mineral reserves and mineral resources, including grades; the timing for transforming and the ability to transform Wassa and Prestea into lower cost producers; production, cash operating cost and capital expenditure guidance for the Company's operations at Wassa and Bogoso in 2015; timing for completing mining at Chujah; the results of the Wassa feasibility study for combined operations and the Prestea underground preliminary economic assessment, including the post-tax internal rate of return, net present value (including assumed discount rates) and payback period; timing for first production from each of Wassa Underground Mine and Prestea Underground Mine; the life of mine at each of Wassa, Wassa Underground Mine and Prestea Underground Mine; pre-production capital costs, cash operating costs and all-in sustaining costs for each of Wassa Underground Mine and Prestea Underground Mine, and future work to be completed at each of Wassa Underground Mine and Prestea Underground Mine; timing of receipt of outstanding environmental permits and funding at Prestea Underground Mine; plans to suspend the refractory mining operation and place the Bogoso refractory plant on care and maintenance, and the timing thereof; the timing of mining operations at Prestea South; the sources of funds and sufficiency thereof to fund operations and capital expenditures; employee severance to be incurred and expensed in 2015; the timing and amount of payments from the Streaming Agreement (as referred to herein); working capital, debt repayments and requirements for additional capital and sources of funding for operations and capital projects.
Generally, forward-looking information and statements can be identified by the use of forward-looking terminology such as “plans”, “expects”, “is expected”, “budget”, “scheduled”, “estimates”, “forecasts”, “intends”, “anticipates”, “believes” or variations of such words and phrases (including negative or grammatical variations) or statements that certain actions, events or results “may”, “could”, “would”, “might” or “will be taken”, “occur” or “be achieved” or the negative connotation thereof.
Forward-looking information and statements are made based upon certain assumptions and other important factors that, if untrue, could cause the actual results, performances or achievements of Golden Star to be materially different from future results, performances or achievements expressed or implied by such statements. Such statements and information are based on numerous assumptions regarding present and future business strategies and the environment in which Golden Star will operate in the future, including the price of gold, anticipated costs and ability to achieve goals. Certain important factors that could cause actual results, performances or achievements to differ materially from those set forth in the forward-looking information and statements include, among others, gold price volatility, discrepancies between actual and estimated production, mineral reserves and resources and metallurgical recoveries, mining operational and development risks, litigation risks, regulatory restrictions (including environmental regulatory restrictions and liability), activities by governmental authorities (including changes in taxation), currency fluctuations, the speculative nature of gold exploration, the global economic climate, dilution, share price volatility, the availability of capital on reasonable terms or at all, local and community impacts and issues, results of pending or future feasibility studies, competition, loss of key employees, additional funding requirements and defective title to mineral claims or property. Although Golden Star has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking information and statements, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended.
Forward-looking information and statements are subject to known and unknown risks, uncertainties and other important factors that may cause the actual results, performance or achievements of Golden Star to be materially different from those expressed or implied by such forward-looking information and statements, including but not limited to: risks related to international operations, including economic and political instability in foreign jurisdictions in which Golden Star operates; risks related to current global financial conditions; risks related to joint venture operations; actual results of current exploration activities; environmental risks;

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future prices of gold; possible variations in mineral reserves and mineral resources, grade or recovery rates; mine development and operating risks; an inability to obtain power for operations on favourable terms or at all; mining plant or equipment breakdowns or failures; an inability to obtain products or services for operations or mine development from vendors and suppliers on reasonable terms, including, pricing, or at all; accidents, labor disputes and other risks of the mining industry; delays in obtaining governmental approvals or financing or in the completion of development or construction activities; risks related to indebtedness and the service of such indebtedness, as well as those factors discussed in the section entitled “Risk Factors” in Golden Star's Annual Information Form for the year ended December 31, 2014. Although Golden Star has attempted to identify important factors that could cause actual results, performances and achievements to differ materially from those contained in forward-looking information and statements, there may be other factors that cause results, performances and achievements not to be as anticipated, estimated or intended. There can be no assurance that such statements will prove to be accurate, as actual results, performances, and achievements and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking information and statements. Forward-looking information and statements are made as of the date hereof and accordingly are subject to change after such date. Except as otherwise indicated by Golden Star, these statements do not reflect the potential impact of any non-recurring or other special items or of any dispositions, monetizations, mergers, acquisitions, other business combinations or other transactions that may be announced or that may occur after the date hereof. Forward-looking information and statements are provided for the purpose of providing information about management's current expectations and plans and allowing investors and others to get a better understanding of the Company's operating environment. Golden Star does not undertake to update any forward-looking information and statements that are included in this MD&A, except as required by applicable securities laws.
CAUTIONARY NOTE REGARDING RESERVES AND RESOURCES
Scientific and technical information contained in this MD&A was reviewed and approved by Dr. Martin Raffield, Senior Vice- President, Technical Services for Golden Star who is a “qualified person” as defined by National Instrument 43-101 - Standards of Disclosure for Mineral Projects (“NI 43-101”) and by S. Mitchel Wasel, BSc Geology who is a Qualified Person pursuant to NI 43-101.  Mr. Wasel is Vice President Exploration for Golden Star and an active member of the Australasian Institute of Mining and Metallurgy. All mineral reserves and mineral resources have been calculated in accordance with the standards of the Canadian Institute of Mining, Metallurgy and Petroleum (“CIM”) and NI 43-101. All mineral resources are reported inclusive of mineral reserves. Mineral resources which are not mineral reserves have not demonstrated economic viability. Information on data verification performed on the mineral properties mentioned in this MD&A that are considered to be material mineral properties to the Company are contained in Golden Star's Annual Information Form for the year ended December 31, 2014 and the following current technical reports for those properties available at www.sedar.com: (i) Wassa - "NI 43-101 Technical Report on feasibility study of the Wassa open pit mine and underground project in Ghana” effective date December 31, 2014; (ii) Bogoso - “NI 43-101 Technical Report on Resources and Reserves Golden Star Resources Ltd., Bogoso Prestea Gold Mine, Ghana” effective date December 31, 2013; and (iii) Prestea Underground - “NI 43-101 Technical Report on Preliminary Economic Assessment for the Shrinkage Mining of the West Reef Resource, Prestea Underground Mine, Ghana” effective date December 18, 2014.
Cautionary Note to U.S. Investors
This MD&A has been prepared in accordance with the requirements of the securities laws in effect in Canada, which differ materially from the requirements of United States securities laws applicable to U.S. companies. Information concerning our mineral properties has been prepared in accordance with the requirements of Canadian securities laws, which differ in material respects from the requirements of the Securities and Exchange Commission (the “SEC”) set forth in Industry Guide 7. Under the SEC's Industry Guide 7, mineralization may not be classified as a “reserve” unless the determination has been made that the mineralization could be economically and legally produced or extracted at the time of the reserve determination, and the SEC does not recognize the reporting of mineral deposits which do not meet the SEC Industry Guide 7 definition of “Reserve”. In accordance with NI 43-101, the terms “mineral reserve”, “proven mineral reserve”, “probable mineral reserve”, “mineral resource”, “measured mineral resource”, “indicated mineral resource” and “inferred mineral resource” are defined in accordance with CIM standards. While the terms “mineral resource”, “measured mineral resource”, “indicated mineral resource” and “inferred mineral resource” are recognized and required by NI 43-101, the SEC does not recognize them. You are cautioned that, except for that portion of mineral resources classified as mineral reserves, mineral resources do not have demonstrated economic viability. Inferred mineral resources have a high degree of uncertainty as to their existence and as to whether they can be economically or legally mined. It cannot be assumed that all or any part of an inferred mineral resource will ever be upgraded to a higher category. Therefore, you are cautioned not to assume that all or any part of an inferred mineral resource exists, that it can be economically or legally mined, or that it will ever be upgraded to a higher category. Likewise, you are cautioned not to assume that all or any part of measured or indicated mineral resources will ever be upgraded into mineral reserves.

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OVERVIEW OF GOLDEN STAR
Golden Star is an established gold mining company that holds a 90% interest in the Wassa, Prestea and Bogoso gold mines in Ghana. The Company is pursuing brownfield development projects at its Wassa and Prestea mines that are expected to transform these mines into lower cost producers from 2016 onwards. The Company is a reporting issuer or the equivalent in all provinces of Canada, in Ghana and in the United States, and files disclosure documents with securities regulatory authorities in Canada, Ghana and with the SEC in the United States.
SUMMARY OF OPERATING AND FINANCIAL RESULTS

													
 	 	Three Months Ended 
 June 30,	 	Six Months Ended June 30,	
OPERATING SUMMARY	 	2015	 	2014	 	2015	 	2014	
Wassa gold sold	oz	24,829		 	29,446		 	48,023		 	64,284		
Bogoso gold sold	oz	30,303		 	32,275		 	70,354		 	63,249		
Total gold sold	oz	55,132		 	61,721		 	118,377		 	127,533		
Average realized gold price	$/oz	1,193		 	1,289		 	1,202		 	1,290		
 	 	 	 	 	 	 	 	 	
Cash operating cost per ounce - Wassa 1	$/oz	918		 	967		 	1,015		 	960		
Cash operating cost per ounce - Bogoso 1	$/oz	1,273		 	1,415		 	1,133		 	1,451		
Cash operating cost per ounce 1	$/oz	1,113		 	1,201		 	1,085		 	1,204		
All-in sustaining cost per ounce 1	$/oz	1,302		 	1,349		 	1,268		 	1,370		
 	 	 	 	 	 	 	 	 	
FINANCIAL SUMMARY	 	 	 	 	 	 	 	 	
Gold revenues	$'000	65,796		 	79,567		 	142,315		 	164,571		
Cost of sales excluding depreciation and amortization	$'000	78,738		 	78,432		 	150,941		 	162,728		
Depreciation and amortization	$'000	13,175		 	5,182		 	24,760		 	11,798		
Mine operating loss	$'000	(26,117	)	 	(4,047	)	 	(33,386	)	 	(9,955	)	
General and administrative expense	$'000	4,829		 	4,120		 	8,461		 	9,826		
Loss/(gain) on fair value of 5% Convertible Debentures	$'000	1,266		 	(2,392	)	 	5,002		 	7,782		
Impairment charges	$'000	34,396		 	—		 	34,396		 	—		
Income tax expense	$'000	—		 	—		 	—		 	85		
 	 	 	 	 	 	 	 	 	
Net loss attributable to Golden Star shareholders	$'000	(61,503	)	 	(5,153	)	 	(74,630	)	 	(27,517	)	
Adjusted net loss attributable to Golden Star shareholders 2	$'000	(15,979	)	 	(7,545	)	 	(37,709	)	 	(19,735	)	
Net loss per share attributable to Golden Star shareholders - basic and diluted	$/share	(0.24	)	 	(0.02	)	 	(0.29	)	 	(0.11	)	
Adjusted net loss per share attributable to Golden Star shareholders - basic and diluted 2	$/share	(0.06	)	 	(0.03	)	 	(0.15	)	 	(0.08	)	
Cash (used in)/provided by operations	$'000	(2,664	)	 	951		 	2,174		 	(996	)	
Cash used in operations before working capital changes 3	$'000	(8,670	)	 	(3,802	)	 	(10,091	)	 	(9,968	)	
Cash (used in)/provided by operations per share - basic and diluted	$/share	(0.01	)	 	0.01		 	0.01		 	(0.01	)	
Cash used in operations before working capital changes per share - basic and diluted 3	$/share	(0.03	)	 	(0.01	)	 	(0.04	)	 	(0.04	)	
 	 	 	 	 	 	 	 	 	
Capital expenditures	$'000	12,754		 	6,272		 	25,536		 	18,484		
1  See "Non-GAAP Financial Measures" below for a reconciliation of cash operating cost per ounce and all-in sustaining cost per ounce to cost of sales before depreciation and amortization.
2  See "Non-GAAP Financial Measures" below for a reconciliation of adjusted net loss attributable to Golden Star shareholders and adjusted net loss per share attributable to Golden Star shareholders to net loss attributable to Golden Star shareholders and net loss per share attributable to Golden Star shareholders.
3  See "Non-GAAP Financial Measures" below for an explanation of the calculation of cash provided used in operations before working capital changes and cash used in operations before working capital changes per share.

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•	Consolidated cash operating cost per ounce was $1,113 in the second quarter of 2015 , 7% lower than $1,201 in the same period in 2014 . Bogoso's cash operating cost per ounce was $1,273 in the second quarter of 2015 compared to $1,415 in the same period in 2014 .Wassa's cash operating cost per ounce was $918 in the second quarter of 2015 compared to $967 in the same period in 2014 . The decrease in cash operating cost per ounce at Bogoso was a result of lower strip ratio and lower mining costs as the mine realized the benefits of the betterment stripping in the Chujah pit that was completed in May 2014. The lower cash operating cost per ounce at Wassa was due to a decline in mining cost per tonne. For the six months ended June 30, 2015 , consolidated cash operating cost per ounce was $1,085 compared to $1,204 in the same period in 2014 .	

•	Gold sales of 55,132 ounces in the second quarter of 2015 were 11% lower than the 61,721 ounces sold in the same period in 2014 . Bogoso gold sales decreased by 6% in the second quarter of 2015 compared to the same period in 2014 mainly as a result of lower plant throughput, lower ore grade processed and lower recovery at the refractory operation as it is nearing suspension. The lower throughput at Bogoso during the second quarter of 2015 was a result of inconsistent power supply and mechanical failures in the soon-to-be suspended refractory plant. Wassa gold sales decreased by 16% due mainly to the lower plant throughput and lower grades processed as a result of the completion of mining of the Father Brown pit in May 2014. For the six months ended June 30, 2015 , gold sales of 118,377 ounces were 7% lower than the 127,533 ounces sold in the same period in 2014 , due mainly to the lower throughput at both operations.	

•	Gold revenues totaled $65.8 million in the second quarter of 2015 , compared to $79.6 million in the same period in 2014 . For the six months ended June 30, 2015 , gold revenue totaled $142.3 million compared to $164.6 million in the same period in 2014 . The decline in realized gold price and fewer ounces sold resulted in the decrease in revenue for both the three and six months period ended June 30, 2015 compared to the same periods in 2014.	

•	Cost of sales excluding depreciation and amortization in the second quarter of 2015 totaled $78.7 million compared to $78.4 million in the same period in 2014 . The slight increase of cost of sales excluding depreciation and amortization was resulted from the $13.0 million severance charge recognized in the second quarter in anticipation of the planned suspension of the Bogoso refractory operation in the third quarter of 2015 and a $0.9 million reduction in usage of inventory, offset by $12.6 million reduction in mine operating expenses compared to the same period in 2014. For the six months ended June 30, 2015 , cost of sales excluding depreciation and amortization totaled $150.9 million compared to $162.7 million in the same period in 2014 as the lower mine operating expenses for the first half of 2015 were offset by the $13.8 million severance charges recognized in the period.	

•	Depreciation and amortization expense totaled $13.2 million in the second quarter of 2015 compared to $5.2 million in the same period in 2014 . For the six months ended June 30, 2015 , depreciation and amortization expense increased to $24.8 million from $11.8 million in the same period in 2014. The increase in depreciation and amortization expense for both the three and six months period ended June 30, 2015 reflects the decrease in recoverable ounces at the Bogoso operation offset slightly by the lower production at Wassa.	

•	General and administrative costs totaled $4.8 million in the second quarter of 2015 , compared to $4.1 million in the same period in 2014 . The 12% increase in head office costs compared to the same period in 2014 were mainly due to an increase in professional fees as a result of legal and consulting fees incurred with respect to the Royal Gold financing arrangement. For the six months ended June 30, 2015 , general and administrative costs totaled $8.5 million compared to $9.8 million in the same period in 2014 mainly due to the higher legal fees incurred during the first half of 2014 .	

•	The Company recorded a non-cash fair value loss of $1.3 million on the 5% Convertible Debentures in the second quarter of 2015 compared to a non-cash fair value gain of $2.4 million in the same period in 2014 . This was calculated based on the discounted cash flows of the debt component and a Black-Scholes valuation of the conversion feature. The higher non-cash fair value loss in the second quarter of 2015 was a result of an decrease in the the risk profile of the 5% Convertible Debentures. For the six months ended June 30, 2015 , the Company recorded a non-cash fair value loss of $5.0 million on the 5% Convertible Debentures compared to a non-cash fair value loss of $7.8 million in the same period in 2014 .	

•	An impairment charge of $34.4 million was recorded for the second quarter of 2015. No impairment charge was recorded in the same period of 2014. The impairment charge for the three and six months ended June 30, 2015 is related to the soon-to-be suspended Bogoso refractory operation and was comprised of $8.7 million of mining interests, $12.9 million on materials and supplies inventory and $12.8 million refractory ore inventory.	

•	Net loss attributable to Golden Star shareholders for the second quarter of 2015 totaled $61.5 million or $0.24 loss per share, compared with a net loss of $5.2 million or $0.02 loss per share for the same period in 2014 . Adjusted net loss attributable to Golden Star shareholders (see "Non-GAAP Financial Measures" section) was $16.0 million in the second quarter of 2015 , compared to $7.5 million for the same period in 2014 .  For the six months ended June 30, 2015 , net loss attributable to Golden Star shareholders totaled $74.6 million compared to $27.5 million for the same period in 2014. Adjusted net loss was $37.7 million and $19.7 million respectively for the six months ended June 30, 2015 and 2014. Net loss and adjusted net loss for the three and six months ended June 30, 2015 were higher than the same periods in 2014 mainly due to lower revenues during those periods compared to 2014 .	

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•	Cash used in operations before working capital changes was $8.7 million for the second quarter of 2015 , compared to $3.8 million in the same period in 2014 . Cash used in operations increased in the second quarter of 2015 compared to the same period in 2014 due to lower production and realized gold price resulting in lower mine operating margins at Wassa and Bogoso. For the six months ended June 30, 2015 , cash used in operations before working capital changes was $10.1 million , consistent to the $10.0 million for the same period in 2014.	

•	Capital expenditures for the second quarter of 2015 totaled $12.8 million compared to $6.3 million in the same period in 2014 . The major capital expenditures in the second quarter of 2015 at Wassa included $3.4 million on expenditures relating to the development of the Wassa Underground Mine and $2.8 million on the expansion of the tailings storage facility and improvements to the processing plant. Capital expenditures at Bogoso during the second quarter of 2015 included $5.5 million on the Prestea Mine. For the six months ended June 30, 2015 , capital expenditures totaled $25.5 million compared to $18.5 million incurred in the same period of 2014. The major capital expenditures in the first half of 2015 at Wassa included $9.4 million on expenditures relating to the development of the Wassa Underground and $5.9 million on improvements to the tailings storage facility and the processing plant. Capital expenditures at Bogoso during the first half of 2015 included $7.6 million on the development of the Prestea Mine.	
OUTLOOK FOR 2015
Production and cost guidance for 2015 for the Company's operations are now expected to be the following:

								
 	Gold production	 	Cash operating costs	 	Capital spending	
 	thousands of ounces	 	$ per ounce	 	$ millions	
Wassa	110 - 115	 	850 - 990	 	$	41		
Bogoso	 95 - 100	 	1,065 - 1,150	 	31		
Consolidated	205 - 215	 	955 - 1,050	 	$	72		
The gold production and cash operating costs per ounce for Wassa remain within the original guidance provided earlier in 2015.
Production in the first half of 2015 was lower than anticipated due to power restrictions and mechanical issues in the processing plant which reduced throughput as well as a slip in the pit wall in the Chujah pit which reduced ore tonnes mined and limited access to higher grade ore sections of the pit. The production forecast for Bogoso is revised to 95,000 - 100,000 ounces for 2015 due to performance of the refractory operation in the first half of 2015 and the anticipated early suspension of the refractory operation. The Company expects that the lost production from the refractory operation may be partially offset with production from Prestea South in the second half of 2015. As a result, the Company expects cash operating costs per ounce of Bogoso to be approximately $1,065 - $1,150 for the remainder of 2015.
CORPORATE DEVELOPMENTS
Gold prices
Spot gold prices decreased marginally from $1,187 per ounce at the end of the first quarter of 2015 to $1,171 per ounce at the end of the second quarter of 2015. The Company realized an average gold price of $1,193 per ounce for gold sales during the second quarter of 2015, 7% lower than the average realized gold price of $1,289 per ounce for the same prior year quarter due to the decline in average spot price of gold. The spot gold price on July 29, 2015 was $1,095 per ounce.
$130 million gold stream agreement and $20 million loan
On July 28, 2015, the Company successfully closed the $150 million streaming and loan financing with Royal Gold, Inc. (“RGI”) and its wholly-owned subsidiary RGLD Gold AG (“RGLD”) that was previously announced on May 7, 2015. The $150 million transaction consists of a $130 million stream transaction with RGLD and a further $20 million term loan from RGI. Golden Star has received the $20 million from RGI in a term loan and will receive initial upfront payment of $40 million from RGLD in relation to the stream. The initial upfront payment was reduced from $55 million to $40 million in conjunction with the Company’s draw down of $15 million on its existing $25 million Ecobank loan II in advance of the conclusion of the financing. The full amount of the stream transaction remains $130 million and the effective date remains April 1, 2015. Golden Star is in the process of retiring $38 million on its Ecobank loan I, this being the full amount outstanding, with funds received from RGI and RGLD.
$15 million draw down on Ecobank loan II
During the three months ended June 30, 2015 , the Company drew down $15.0 million of the $25 million Ecobank loan II. The Ecobank loan II has a term of 60 months from the date of initial drawdown and is secured by, among other things, Wassa’s existing plant, machinery and equipment. The interest rate on the loan is three-month LIBOR plus 11% per annum, payable monthly in

7

arrears beginning a month following the initial drawdown. Payment of principal commences six months following the initial drawdown and is thereafter payable quarterly in arrears. The Company will be required to adhere to certain financial covenants from the end of 2016. The Company has until the third quarter of 2015 to make further drawndowns on the remaining $10 million available from the loan.
Bogoso refractory operation
The Company plans to suspend the Bogoso refractory operation and place it on care and maintenance in the third quarter of 2015. This is in keeping with the Company's strategy of lowering the cash operating cost per ounce by focusing future mining and processing on non-refractory ore types which require lower processing costs than refractory ores. However due to lower than expected grade and pitwall slippages, the Company decided to suspend the refractory operation sooner than originally anticipated. During the second quarter of 2015, impairment charges of $34.4 million and a severance charge of $13.0 million were recorded in anticipation of the suspension of the refractory operation in the third quarter of 2015. Mining property related impairment charges totaled $8.7 million , which comprised of $4.2 million relating to mine property, and $4.5 million relating to plant and equipment. These impairment charges represent the excess of carrying values over the recoverable amounts of the Bogoso refractory assets. An additional $12.9 million of material and supplies inventory and $13 million of ore inventory at the Bogoso refractory operation were also written down.
Power restrictions in Ghana
Since December 2014, the Volta River Authority ("VRA"), the Ghana government's subsidiary which controls Ghanaian power supply, has rationed electric power to all power users in Ghana, including the mining sector. Ghana's major power generating source, the Akosombo Hydroelectric Power Station on the Volta river has cut back its power output over the past several months due to historical low water levels in the Akosombo reservoir which feeds the Akosombo power plant. Rainfall over the last several months has not been sufficient to restore the reservoir water levels to a point that would allow continuous unrestricted operations. Additionally, the thermal power plants are running significantly below capacity causing a further power shortfall of almost 300 megawatts in Ghana.
Ghana has implemented both short and long-term remediation plans to bring the power supply back to capacity. These projects include increasing the gas supply, construction of power barges, construction of a power plant and pursuing solar, wind, liquefied natural gas and oil projects.
In light of the power supply deficit in Ghana, the Company supported the Ghanaian Ministry of Power's load shedding plan introduced in December 2014. The reduction in power usage was achieved by a combination of limiting activities at the Prestea underground mine and operating our stand-by diesel generating capacity. By taking these actions, the Company was able to continue operations at Wassa and Bogoso but the high cost of diesel for our generators has contributed to higher operating costs.
DEVELOPMENT PROJECTS UPDATE
Wassa Underground development
Drilling below the Wassa Main pit since late 2011 was successful in increasing the Wassa Mineral Resource. In March 2015 the results of a Feasibility Study on the economic viability of an underground mine operating in conjunction with the existing open pit mine were announced and the decision to progress with the construction of the underground mine was affirmed. The primary access to the underground mine will be a decline from the bottom of the Wassa Main pit. The activities related to the development of an exploration decline progressed well during the second quarter of 2015. Should the bulk sampling from this exploration decline deliver favourable results then the decline will be expanded for full operational usage. The following is a summary of the major advances:

•	Mining equipment has arrived on site;	
		
•	The installation of the electrical infrastructure, including 4MVA genset capacity, is progressing well	
		
•	The first blast for the development of the decline took place in July 2015 and development of the decline is ongoing; and	
		
•	The construction of support infrastructure is progressing well.	
It is anticipated that that stoping will commence late in the first quarter of 2016.
Bogoso
Prestea Mine
The Prestea mine consists of an underground mine that has been in existence for over 100 years along with adjacent surface deposits. The Prestea mine is located 16 km south of the Bogoso mine and processing plants in the town of Prestea. The underground mine is currently on care and maintenance.  A number of high grade surface deposits exist to the south of underground mine that have historically been exploited by artisanal miners.

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The surface deposits are host to approximately 122,000 ounces of non-refractory Mineral Reserves at an average grade of 2.24 g/t Au. The environmental permit required to mine the surface deposits was issued by the Environmental Protection Agency in June 2015 after Golden Star undertook extensive environmental and community impact assessments and local community consultations. Mining of these surface operations began early in the third quarter and 20,000 - 30,000 ounces of gold are expected to be produced in 2015.
The preliminary economic assessment ("PEA") on the development of the Prestea underground mine was completed and published on SEDAR in 2014. The PEA, which is based on development of a non-mechanized mining operation, indicated a post-tax IRR of 72% and net present value of $121 million at a $1,200 per ounce gold price. Cash operating costs of $370 per ounce and All-in sustaining costs of $518 per ounce were estimated over the life of mine. The Company plans to bring the Prestea underground mine into production by 2016 pending receipt of environmental permits and the completion of a feasibility study, which is expected to be finalized during the third quarter of 2015.
During the six months ended June 30, 2015, the Company incurred capital expenditures totaling $8.1 million at the Prestea Mine. The Company expects to incur approximately $20 million on capital at the Prestea Mine for the remainder of 2015.

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WASSA OPERATIONS
Through a 90% owned subsidiary Golden Star (Wassa) Limited, the Company owns and operates the Wassa open pit mine, located approximately 35 kilometers east of the town of Bogoso, Ghana. Wassa has a non-refractory processing plant (“Wassa processing plant”) consisting of a carbon-in-leach ("CIL") system with a capacity of 2.7 million tonnes per annum. Ore from the Wassa mine is processed at the Wassa processing plant.

																	
 	 	Three Months Ended 
 June 30,	 	Six Months Ended 
 June 30,	
 	 	2015	 	2014	 	2015	 	2014	
WASSA FINANCIAL RESULTS	 	 	 	 	 	 	 	 	
Revenue	$'000	$	29,615		 	$	37,910		 	$	57,727		 	$	82,819		
 	 	 	 	 	 	 	 	 	
Mine operating expenses	$'000	24,412		 	28,435		 	49,231		 	62,437		
Severance charges	$'000
	322		 	925		 	803		 	999		
Royalties	$'000	1,483		 	1,897		 	2,889		 	4,145		
Operating costs (to)/from metals inventory	$'000	(1,621	)	 	(889	)	 	(477	)	 	(1,695	)	
Inventory net realizable value adjustment	$'000
	721		 	319		 	1,524		 	319		
Cost of sales excluding depreciation and amortization	$'000	25,317		 	30,687		 	53,970		 	66,205		
Depreciation and amortization	$'000	2,841		 	3,292		 	6,741		 	7,165		
Mine operating margin/(loss)	$'000	$	1,457		 	$	3,931		 	$	(2,984	)	 	$	9,449		
 	 	 	 	 	 	 	 	 	
Capital expenditures	$'000	6,979		 	2,570		 	17,405		 	6,714		
 	 	 	 	 	 	 	 	 	
WASSA OPERATING RESULTS	 	 	 	 	 	 	 	 	
Ore mined	t	753,883		 	722,598		 	1,314,034		 	1,372,060		
Waste mined	t	2,688,452		 	2,811,686		 	5,050,234		 	7,251,756		
Ore processed	t	609,076		 	660,580		 	1,239,797		 	1,364,956		
Grade processed	g/t	1.36		 	1.48		 	1.28		 	1.55		
Recovery	%	94.1		 	92.8		 	93.4		 	92.8		
Gold sales	oz	24,829		 	29,446		 	48,023		 	64,284		
 	 	 	 	 	 	 	 	 	
Cash operating cost per ounce 1	$/oz	918		 	967		 	1,015		 	960		
1  See "Non-GAAP Financial Measures" below for a reconciliation of cash operating cost per ounce to cost of sales excluding depreciation and amortization.
Three Months Ended June 30, 2015 compared to three months ended June 30, 2014
Production
Gold sales were 24,829 ounces for the second quarter of 2015 , a 16% decrease from the 29,446 ounces sold during the same period of 2014 due to lower grade and throughput. Production was higher in the same quarter of 2014 as Wassa had ore feed from the higher grade Father Brown pit. Mining at Father Brown was completed in the second quarter of 2014. Production was also affected by lower throughput due to a mechanical failure of the crusher that resulted in a six day interruption of the ore crushing process.
Gold revenues
Gold revenues were $29.6 million for the second quarter of 2015 , compared to $37.9 million for the same period in 2014 . The decrease was due to a 16% decrease in ounces of gold sold and the decline in the average realized gold price to $1,193 per ounce in the second quarter of 2015 , compared to $1,287 per ounce for the same quarter in 2014 .
Cost of sales excluding depreciation and amortization
Cost of sales excluding depreciation and amortization for Wassa totaled $25.3 million during the second quarter of 2015 , $5.4 million lower than the $30.7 million incurred during the same period of 2014 . The lower cost of sales is mainly related to the $4.0 million decrease in mine operating expenses as a result of lower mining and lower haulage costs incurred following completion of mining at the Father Brown pit in the second quarter of 2014. Inventory build-up and lower royalty expense also contributed to the lower cost of sales excluding depreciation and amortization for the second quarter of 2014. Royalty expense was lower as a result of lower gold revenue in the second quarter compared to same prior year period.

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Depreciation and amortization
Depreciation and amortization for the second quarter of 2015 decreased to $2.8 million from $3.3 million during the same period in 2014. The depreciation and amortization expense in the second quarter of 2015 was impacted by lower production compared to the same period in 2014 .
Cash operating cost per ounce
Wassa's cash operating cost per ounce for the second quarter of 2015 was $918 , compared to $967 in the same period in 2014 . Wassa's cash operating costs of $22.8 million for the second quarter of 2015 were 20% lower than the $28.5 million incurred during the same period in 2014 due to a decline in mining cost per tonne mined. The lower mining cost per tonne mined is slightly offset by the higher processing cost per tonne. During the second quarter, approximately 30% of the electricity used to power the Wassa processing plant was generated from high cost diesel generators as a result of the load shedding program in Ghana.
Capital expenditures
Capital expenditures for the second quarter of 2015 totaled $7.0 million compared with $2.6 million during the same period in 2014 . Sustaining capital expenditures totaled $1.8 million during the three months ended June 30, 2015 compared to $0.1 million incurred the comparable period of 2014 . Development capital expenditures totaled $5.2 million during the three months ended June 30, 2015 and $2.5 million in the same period of 2014 . Development capital expenditures in the second quarter of 2015 included $3.4 million on expenditures relating to the development of the Wassa Underground Mine and $1.4 million on the improvement of the tailings stoarage facility.

Six Months Ended June 30, 2015 compared to six months ended June 30, 2014
Production
Gold sales were 48,023 ounces for the six months ended June 30, 2015 , a 25% decrease from the 64,284 ounces sold during the same period in 2014 due to lower grade and throughput. Production was higher in the period of 2014 as Wassa had ore feed from the higher grade Father Brown pit. Mining at Father Brown was completed in the second quarter of 2014.
Gold revenues
Gold revenues were $57.7 million for the six months ended June 30, 2015 , compared to $82.8 million for the same period in 2014 . The decrease was due to a 25% decrease in ounces of gold sold and the decline in the average realized gold price to $1,202 per ounce for the six months ended June 30, 2015 , compared to $1,288 per ounce for the same period in 2014.
Cost of sales excluding depreciation and amortization
Cost of sales excluding depreciation and amortization for Wassa was $54.0 million for the six months ended June 30, 2015 , $13.2 million lower than the $66.2 million incurred during the same period in 2014 . The lower cost of sales is mainly related to the $13.2 million decrease in mine operating expenses and lower royalty expense. The completion of mining of the Father Brown pit contributed to the lower mine operating expenses for the six months ended June 30, 2015 as lower contract mining, haulage and salary costs were incurred in 2015. Royalty expense was lower as a result of lower gold revenue in the six months ended June 30, 2015 compared to the same period in 2014 .
Depreciation and amortization
Depreciation and amortization for the six months ended June 30, 2015 totaled $6.7 million compared to $7.2 million for the same period in 2014 . The depreciation and amortization expense for the six months ended June 30, 2015 was impacted by lower production compared to the same period in 2014.
Cash operating cost per ounce
Wassa's cash operating cost per ounce for the six months ended June 30, 2015 totaled $1,015 , up 6% from $960 in 2014 . Wassa's cash operating costs of $48.8 million for the six months ended June 30, 2015 were 21% lower than the $61.7 million incurred during the same period in 2014 . However, the lower gold production compared to the first half of 2014 offset the lower total cash operating costs, resulting in higher cash operating costs per ounce.
Capital expenditures
Capital expenditures for the six months ended June 30, 2015 were $17.4 million compared with $6.7 million in the same period in 2014 . Sustaining capital expenditures were $4.0 million for the six months ended June 30, 2015 compared to $0.9 million in the same period in 2014 . Development capital expenditures were $13.4 million for the six months ended June 30, 2015 compared to $5.8 million in 2014 . Development capital expenditures in the six months ended June 30, 2015 included $9.4 million on expenditures relating to the development of the Wassa Underground Mine, $2.9 million on the improvement of the tailings storage facility and $1.1 million developmental drilling at Wassa.

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BOGOSO OPERATIONS
Through a 90% owned subsidiary Golden Star (Bogoso/Prestea) Limited, the Company owns and operates the Bogoso gold mining and processing operations located near the town of Bogoso, Ghana and the Prestea Mine. Bogoso operates a gold ore processing facility with a capacity of 2.7 million tonnes of ore per annum, which uses bio-oxidation technology to treat refractory ore (“Bogoso refractory plant”). The Company plans to suspend the refractory mining operation and place the Bogoso refractory processing plant on care and maintenance in the third quarter of 2015. Bogoso also has a CIL processing facility located adjacent to the Bogoso refractory plant, which is suitable for treating non-refractory gold ores (“Bogoso non-refractory plant”) with capacity of up to 1.5 million tonnes per annum.
Through Bogoso, the Company owns the Prestea Mine that consists of an existing underground mine, neighbouring open pit deposits and associated support facilities.  The underground mine is currently inactive and the open pit operations started in the third quarter of 2015.

																	
 	 	Three Months Ended 
 June 30,	 	Six Months Ended 
 June 30,	
 	 	2015	 	2014	 	2015	 	2014	
BOGOSO FINANCIAL RESULTS	 	 	 	 	 	 	 	 	
Revenue	$'000	$	36,181		 	$	41,657		 	$	84,588		 	$	81,752		
 	 	 	 	 	 	 	 	 	
Mine operating expenses	$'000	35,835		 	44,442		 	79,778		 	93,191		
Severance charges	$'000
	13,038		 	168		 	13,041		 	276		
Royalties	$'000	1,810		 	2,084		 	4,232		 	4,091		
Operating costs to/(from) metals inventory	$'000	2,738		 	1,051		 	(80	)	 	(1,688	)	
Inventory net realizable value adjustment	$'000
	—		 	—		 	—		 	653		
Cost of sales excluding depreciation and amortization	$'000	53,421		 	47,745		 	96,971		 	96,523		
Depreciation and amortization	$'000	10,334		 	1,890		 	18,019		 	4,633		
Mine operating loss	$'000	$	(27,574	)	 	$	(7,978	)	 	$	(30,402	)	 	$	(19,404	)	
 	 	 	 	 	 	 	 	 	
       Capital expenditures	$'000	5,775		 	3,702		 	8,131		 	11,770		
 	 	 	 	 	 	 	 	 	
BOGOSO OPERATING RESULTS	 	 	 	 	 	 	 	 	
Ore mined refractory	t	427,808		 	531,295		 	1,169,800		 	1,185,598		
Ore mined non-refractory	t	—		 	—		 	—		 	—		
Total ore mined	t	427,808		 	531,295		 	1,169,800		 	1,185,598		
Waste mined	t	664,036		 	3,408,157		 	2,103,356		 	8,332,304		
Refractory ore processed	t	513,550		 	609,705		 	1,085,356		 	1,318,027		
Refractory ore grade	g/t	2.06		 	2.10		 	2.34		 	1.93		
Gold recovery – refractory ore	%	68.1		 	68.5		 	69.5		 	67.6		
Non-refractory ore processed	t	380,452		 	330,602		 	802,018		 	735,095		
Non-refractory ore grade	g/t	0.87		 	0.82		 	0.90		 	0.89		
Gold recovery - non-refractory ore	%	43.7		 	32.5		 	42.7		 	37.5		
Gold sold refractory	oz	25,702		 	28,620		 	60,291		 	54,630		
Gold sold non-refractory	oz	4,601		 	3,655		 	10,063		 	8,619		
Gold sales (total)	oz	30,303		 	32,275		 	70,354		 	63,249		
 	 	 	 	 	 	 	 	 	
Cash operating cost per ounce 1	$/oz	1,273		 	1,415		 	1,133		 	1,451		
1  See "Non-GAAP Financial Measures" below for a reconciliation of cash operating cost per ounce to cost of sales excluding depreciation and amortization.
Three Months Ended June 30, 2015 compared to three months ended June 30, 2014
Production
Bogoso gold sales were 30,303 ounces for the second quarter of 2015 compared to 32,275 ounces during the same period of 2014 . Refractory gold sales decreased to 25,702 ounces in the second quarter of 2015 from the 28,620 ounces sold in the same period

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of 2014 due to lower plant throughput, lower ore grade processed and lower recovery. The lower throughput in the second quarter of 2015 was a result of inconsistent power supply and mechanical failures of the grates and ball mill motor in the plant.
Non-refractory gold sales increased to 4,600 ounces in the second quarter of 2015 , up 26% from the 3,655 ounces sold in the same period of 2014 . The increase in sales in the non-refractory operation was due to higher throughput, higher recovery and higher grade feed from the tailings reclaim material during this quarter compared to the same period in 2014 .
Gold revenues
Gold revenues for the second quarter of 2015 were $36.2 million , down $5.5 million from $41.7 million in the second  quarter of 2014 . Gold sold totaled 30,303 ounces in the second quarter of 2015 , down 6% ounces from 32,275 ounces sold in the same period of 2014 . The realized gold price was also down 8% , averaging $1,194 per ounce in the second quarter of 2015 , compared with $1,291 per ounce in the same period in 2014 .
Cost of sales excluding depreciation and amortization
Bogoso's cost of sales excluding depreciation and amortization was $53.4 million for the second quarter of 2015 , up 12% from $47.7 million for the same period in 2014 . The increase was mainly due to a $13.0 million severance charge recorded in anticipation of the suspension of refractory operation in the third quarter of 2015 offset by a $8.3 million decrease in mining costs as a result of less material mined compared to the same period in 2014.
Depreciation and amortization
Depreciation and amortization expense increased to $10.3 million for the second  quarter of 2015 from $1.9 million for the second quarter of 2014 . The depreciation and amortization expense in the second quarter of 2015 was impacted by the lower reserve and resource estimates compared to the same period in 2014 .
Cash operating cost per ounce
Cash operating cost per ounce was $1,273 for the second quarter of 2015 , compared to $1,451 for the same period in 2014 . Cash operating costs for the six months ended June 30, 2015 were $38.6 million , down from $45.7 million during the same period in 2014 due mainly to lower mine operating expenses achieved as a result of lower headcount and less material mined resulting in lower mining costs.
Capital expenditures
Capital expenditures for the second quarter of 2014 were $5.8 million compared to $3.7 million incurred during the same period in 2014 as a result of an increase in development capital expenditures. Development capital expenditures increased to $5.5 million in the second quarter of 2015 compared to $3.5 million in the same period in 2014 . Development capital expenditures in the second quarter of 2015 included $5.5 million on the Prestea Mine.
Six Months Ended June 30, 2015 compared to six months ended June 30, 2014
Production
Bogoso gold sales were 70,354 ounces for the six months ended June 30, 2015 , up 11% compared to 63,249 ounces for the same period in 2014 . Refractory gold sales increased to 60,291 ounces in 2015 from the 54,630 ounces sold in 2014 as a result of higher grade processed and higher recovery achieved during the six months ended June 30, 2015 . The Chujah pit pushback was completed in May 2014 which provided access to mine higher grade ore, resulting in higher gold production in the first six months of 2015. Non-refractory gold sales increased to 10,063 ounces in the second quarter of 2015 , up 17% from the 8,619 ounces sold in the same period in 2014 as a result of higher throughput, higher ore grade processed and higher recovery achieved during the six months ended June 30, 2015 .
Gold revenues
Gold revenues for the six months ended June 30, 2015 were $84.6 million compared to $81.8 million in the same period in 2014 . Gold sold totaled 70,354 ounces in the six months ended June 30, 2015 , up 11% from 63,249 ounces sold in the same period in 2014 . The higher revenue as a result of the increased production was partially offset by a 7% decrease in the realized gold price, averaging $1,202 per ounce in the six months ended June 30, 2015 , compared to $1,293 per ounce in the same period in 2014 .
Cost of sales excluding depreciation and amortization
Bogoso's cost of sales excluding depreciation and amortization was $97.0 million for the six months ended June 30, 2015 , up from $96.5 million for the same period in 2014 due mainly to a $13.0 million severance charge recorded in anticipation of the suspension of refractory operation in the third quarter of 2015 and a $1.7 million build up of inventory in the first half of 2014 compared to $0.1 million usage of inventory in the first half of 2015, offset by $13.4 million reduction of mine operating expenses as a result of lower mining costs due to less material mined compared to the same period in 2014.

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Depreciation and amortization
Depreciation and amortization expense increased to $18.0 million for the six months ended June 30, 2015 , compared to $4.6 million for the same period in 2014 . The higher depreciation and amortization expense was a result of higher production in the first half of 2015 compared to the same period in 2014 and the decrease in reserve and resource estimates compared to the same period in 2014 .
Cash operating cost per ounce
Cash operating cost per ounce was $1,133 for the six months ended June 30, 2015 , compared to $1,451 for the same period in 2014 . Cash operating costs for the six months ended June 30, 2015 were $79.7 million , down from $91.8 million during the same period in 2014 due mainly to lower mine operating expenses achieved as a result of lower headcount and lower strip ratio resulting in lower mining costs at Chujah.
Capital expenditures
Capital expenditures for the six months ended June 30, 2015 were $8.1 million compared to $11.8 million during the same period in 2014 as a result of decrease in development capital expenditures. Development capital expenditures were $7.6 million in the first half of 2015 compared to $10.9 million in the same period in 2014 . Development capital expenditures in the six months ended June 30, 2015 included $7.6 million on the Prestea Mine.
SUMMARIZED QUARTERLY FINANCIAL RESULTS

																									
 	Three Months Ended,	
(Stated in thousands of U.S dollars except per share data)	Q2 2015	Q1 2015	Q4 2014	Q3 2014	Q2 2014	Q1 2014	Q4 2013	Q3 2013	
Revenues	$	65,796		$	76,519		$	86,586		$	77,758		$	79,567		$	85,004		$	96,034		$	118,159		
Cost of sales excluding depreciation and amortization	78,738		72,203		71,410		70,774		78,432		84,296		88,550		91,294		
Net (loss)/income	(68,988	)	(15,113	)	(53,545	)	1,165		(6,708	)	(24,353	)	(165,304	)	4,539		
Net income/(loss) attributable to shareholders of Golden Star	(61,503	)	(13,127	)	(48,155	)	2,593		(5,153	)	(22,364	)	(148,576	)	3,507		
Net (loss)/income per share attributable to shareholders of Golden Star:	 	 	 	 	 	 	 	 	
  - Basic and diluted	$	(0.24	)	$	(0.05	)	$	(0.19	)	$	0.01		$	(0.02	)	$	(0.09	)	$	(0.57	)	$	0.01		

LIQUIDITY AND FINANCIAL CONDITION
The Company held $21.4 million in cash and cash equivalents as of June 30, 2015 , down from $39.4 million at December 31, 2014 . During the six months ended June 30, 2015 , operations provided $2.2 million of cash, investing activities used cash of $26.4 million and financing activities provided cash of $6.3 million .
The working capital deficit increased from $32.0 million at December 31, 2014 to $86.3 million at June 30, 2015 mainly due to decrease in cash and cash equivalents and inventories. Current accounts payable increased slightly, from $123.5 million at December 31, 2014 to $125.0 million at June 30, 2015 .
Before working capital changes, operations used $10.1 million of operating cash flow during the six months ended June 30, 2015 , compared to $10.0 million used by operations in the same period in 2014.
Working capital changes provided $12.3 million during the first half of 2015, compared to $9.0 million provided by working capital in the same period in 2014. The working capital changes in the first half of 2015 related mainly to a decrease of inventory by $1.3 million , a decrease in accounts receivable by $4.6 million and an increase in accounts payable and accrued liabilities by $6.7 million offset by a decrease in prepaids and other by $0.4 million .
Investing activities used $26.4 million during the first half of 2015, which included $9.5 million on the development of the Wassa Underground Mine, $7.6 million on the development Prestea Mine and $5.9 million on upgrades of the tailing facility and the processing plant.
Financing activities provided a net of $6.3 million cash in the first half of 2015 compared to a net of $4.7 million in the same period in 2014. During the six months ended June 30, 2015 , the Company drew down $15.0 million on Ecobank loan II and made

14

total principal repayments of $8.7 million on Ecobank Loan I, equipment loans and capital lease obligations. During the same period in 2014, the Company drew down a total of $10 million under the Ecobank Loan I and made $5.3 million principal repayments of debt.
LIQUIDITY OUTLOOK
On July 29, 2015, the Company successfully closed the $150 million streaming and financing with RGI and its wholly-owned subsidiary RGLD that was announced on May 7, 2015. The $150 million transaction consists of a $130 million stream transaction with RGLD and a further $20 million term loan from RGI. Golden Star has received the $20 million from RGI in a term loan and will receive initial upfront payment of $40 million from RGLD in relation to the stream. The Company expects to receive $90 million of quarterly payments commencing on September 1, 2015, upon satisfaction of development progress of the Wassa and Prestea underground mines.
As of June 30, 2015 , the Company had $21.4 million in cash and $10.0 million available for draw down under the Ecobank Loan II. Working capital deficit increased from $32.0 million at December 31, 2014 to $86.3 million at June 30, 2015 mainly due to decrease in cash and cash equivalents and inventories. Current accounts payable increased slightly, from $123.5 million at December 31, 2014 to $125.0 million at June 30, 2015 .
As a component of the plan to suspend the Bogoso refractory processing plant, the Company has recognized $13 million of severance charges in the second quarter of 2015 and are in the process of determining any further costs associated with the suspension.
The Company expects that the existing cash balance, available credit from the Ecobank loan II and the proceeds from the streaming agreement with RGLD will be sufficient to fund operations and capital expenditures as required for the development of the Wassa underground and the Prestea mines.
TABLE OF CONTRACTUAL OBLIGATIONS

																					
 		Payment due (in thousands) by period 	
 (Stated in thousands of U.S dollars)		Less than 1
Year 		1 to 3 years 		3 to 5 years  		More than
5 Years 		Total 	
Debt 1		$	16,829			$	108,450			$	31,120			$	—			$	156,399		
Finance leases		1,023			1,984			388			—			3,395		
Interest on long term debt		9,005			9,590			1,116			—			19,711		
Other long term liabilities 2	 	—		 	15,511		 	—		 	—		 	15,511		
Purchase obligations		3,504			—			—			—			3,504		
Rehabilitation provisions 3		2,328			28,016			29,337			29,551			89,232		
Total		$	32,689			$	163,551			$	61,961			$	29,551			$	287,752		

1  	Includes the outstanding repayment amounts from the 5% Convertible Debentures maturing in June 2017, the Ecobank Loan I and II, the loan from RGI and the equipment financing loans. Golden Star has the right to repay the $77.5 million principal amount of the 5% Convertible Debentures in cash or in common shares at the due date under certain circumstances. The presentation shown above assumes payment is made in cash and also assumes no conversions of the 5% Convertible Debentures into common shares by the holders prior to the maturity date.	

2  	This amount represents the agreement with the electricity provider in Ghana, Volta River Authority, for deferral of payments of certain accounts payable to 2016 and 2017.	

3  	Rehabilitation provisions indicates the expected undiscounted cash flows for each period.	

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RELATED PARTY TRANSACTIONS
There were no material related party transactions in the three months ended June 30, 2015 and 2014 other than compensation of key management personnel which is presented in the table below. Key management personnel is defined as members of the Board of Directors and certain senior officers.

																
	Three Months Ended 
 June 30,	 	Six Months Ended 
 June 30,	
 	2015	 	2014	 	2015	 	2,014	
Salaries, wages, and other benefits	$	634		 	$	599		 	$	1,394		 	$	1,195		
Bonus	328		 	360		 	656		 	868		
Share-based compensation	398		 	175		 	696		 	751		
	$	1,360		 	$	1,134		 	$	2,746		 	$	2,814		
OFF-BALANCE SHEET ARRANGEMENTS
The Company has no material off-balance sheet arrangements.
NON-GAAP FINANCIAL MEASURES
In this MD&A, we use the terms "cash operating cost", “cash operating cost per ounce”, "all-in sustaining costs", "all-in sustaining costs per ounce", "cash (used in)/provided by operations before working capital changes", "adjusted net (loss)/income attributable to Golden Star shareholders" and "adjusted net (loss)/income per share attributable to Golden Star shareholders".
“Cost of sales excluding depreciation and amortization” as found in the statements of operations includes all mine-site operating costs, including the costs of mining, ore processing, maintenance, work-in-process inventory changes, mine-site overhead as well as production taxes, royalties, and by-product credits, but excludes exploration costs, property holding costs, corporate office general and administrative expenses, foreign currency gains and losses, gains and losses on asset sales, interest expense, gains and losses on derivatives, gains and losses on investments and income tax expense/benefit.
“Cash operating cost” for a period is equal to “Cost of sales excluding depreciation and amortization” for the period less royalties and production taxes, minus the cash component of metals inventory net realizable value adjustments and severance charges, and "cash operating cost per ounce" is that amount divided by the number of ounces of gold sold during the period. We use cash operating cost per ounce as a key operating indicator. We monitor this measure monthly, comparing each month's values to prior periods' values to detect trends that may indicate increases or decreases in operating efficiencies. We provide this measure to investors to allow them to also monitor operational efficiencies of the Company's mines. We calculate this measure for both individual operating units and on a consolidated basis. Since cash operating costs do not incorporate revenues, changes in working capital and non-operating cash costs, they are not necessarily indicative of operating profit or cash flow from operations as determined under IFRS. Changes in numerous factors including, but not limited to, mining rates, milling rates, ore grade, gold recovery, costs of labor, consumables and mine site general and administrative activities can cause these measures to increase or decrease. We believe that these measures are similar to the measures of other gold mining companies, but may not be comparable to similarly titled measures in every instance.
"All-in sustaining costs" commences with cash operating costs and then adds sustaining capital expenditures, corporate general and administrative costs, mine site exploratory drilling and greenfield evaluation costs and environmental rehabilitation costs. "All-in sustaining costs per ounce" is that amount divided by the number of ounces of gold sold during the period. This measure seeks to represent the total costs of producing gold from current operations, and therefore it does not include capital expenditures attributable to projects or mine expansions, exploration and evaluation costs attributable to growth projects, income tax payments, interest costs or dividend payments. Consequently, this measure is not representative of all of the Company's cash expenditures. In addition, the calculation of all-in sustaining costs does not include depreciation expense as it does not reflect the impact of expenditures incurred in prior periods. Therefore, it is not indicative of the Company's overall profitability.
The Company believes that “all-in sustaining costs” will better meet the needs of analysts, investors and other stakeholders of the Company in understanding the costs associated with producing gold, understanding the economics of gold mining, assessing the operating performance and also the Company's ability to generate free cash flow from current operations and to generate free cash flow on an overall Company basis. Due to the capital intensive nature of the industry and the long useful lives over which these items are depreciated, there can be a disconnect between net earnings calculated in accordance with IFRS and the amount of free cash flow that is being generated by a mine. In the current market environment for gold mining equities, many investors and analysts are more focused on the ability of gold mining companies to generate free cash flow from current operations, and consequently the Company believes these measures are useful non-IFRS operating metrics ("non-GAAP measures") and

16

supplement the IFRS disclosures made by the Company. These measures are not representative of all of Golden Star's cash expenditures as they do not include income tax payments or interest costs. Non-GAAP measures are intended to provide additional information only and do not have standardized definitions under IFRS and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with IFRS. These measures are not necessarily indicative of operating profit or cash flow from operations as determined under IFRS. The table below reconciles these non-GAAP measures to the most directly comparable IFRS measures and previous periods have been recalculated to conform to the current definition.
The table below reconciles consolidated cost of sales excluding depreciation and amortization to cash operating cost per ounce and all-in sustaining costs per ounce:

																
(Stated in thousands of U.S dollars except cost per ounce data)	Three Months Ended 
 June 30,	 	Six Months Ended 
 June 30,	
 	2015	 	2014	 	2015	 	2014	
Cost of sales excluding depreciation and amortization	$	78,738		 	$	78,432		 	$	150,941		 	$	162,728		
     Severance charges	(13,360	)	 	—		 	(13,844	)	 	—		
     Royalties	(3,293	)	 	(3,981	)	 	(7,121	)	 	(8,236	)	
     Metals inventory net realizable value adjustment	(721	)	 	319		 	(1,524	)	 	972		
Cash operating costs	61,364		 	74,770		 	128,452		 	155,464		
     Royalties	3,293		 	3,981		 	7,121		 	8,236		
     Metals inventory net realizable value adjustment	721		 	(319	)	 	1,524		 	(972	)	
     Accretion of rehabilitation provision	441		 	437		 	881		 	873		
     General and administrative costs	4,829		 	4,120		 	8,461		 	9,826		
     Sustaining capital expenditures	1,134		 	296		 	3,626		 	1,325		
All-in sustaining costs	$	71,782		 	$	83,285		 	$	150,065		 	$	174,752		
 	 	 	 	 	 	 	 	
Ounces sold	55,132		 	61,721		 	118,377		 	127,533		
Cost per ounce measures ($/oz):	 	 	 	 	 	 		
Cash operating cost per ounce	1,113		 	1,211		 	1,085		 	1,219		
All-in sustaining cost per ounce	1,302		 	1,349		 	1,268		 	1,370		
The tables below reconcile cost of sales excluding depreciation and amortization to cash operating costs per ounce for each of the operating mines:

												
 	Three Months Ended 
 June 30, 2015	
 		
 	Wassa	 	Bogoso	 	Combined	
Cost of sales excluding depreciation and amortization	$	25,317		 	$	53,421		 	$	78,738		
     Severance charges	(322	)	 	(13,038	)	 	(13,360	)	
     Royalties	(1,483	)	 	(1,810	)	 	(3,293	)	
     Metals inventory net realizable value adjustment	(721	)	 	—		 	(721	)	
Cash operating costs	$	22,791		 	$	38,573		 	$	61,364		
 	 	 	 	 	 	
Ounces sold	24,829		 	30,303		 	55,132		
 	 	 	 	 	 	
Cash operating cost per ounce	$	918		 	$	1,273		 	$	1,113		

17

	
												
 	Three Months Ended 
 June 30, 2014	
 		
 	Wassa	 	Bogoso	 	Combined	
Cost of sales excluding depreciation and amortization	$	30,687		 	$	47,745		 	$	78,432		
     Royalties	(1,897	)	 	(2,084	)	 	(3,981	)	
     Metals inventory net realizable value adjustment	(319	)	 	—		 	(319	)	
Cash operating costs	$	28,471		 	$	45,661		 	$	74,132		
 	 	 	 	 	 	
Ounces sold	29,446		 	32,275		 	61,721		
 	 	 	 	 	 	
Cash operating cost per ounce	$	967		 	$	1,415		 	$	1,201		

												
 	Six Months Ended 
 June 30, 2015	
 		
 	Wassa	 	Bogoso	 	Combined	
Cost of sales excluding depreciation and amortization	$	53,970		 	$	96,971		 	$	150,941		
     Severance charges	(803	)	 	(13,041	)	 	(13,844	)	
     Royalties	(2,889	)	 	(4,232	)	 	(7,121	)	
     Metals inventory net realizable value adjustment	(1,524	)	 	—		 	(1,524	)	
Cash operating costs	$	48,754		 	$	79,698		 	$	128,452		
 	 	 	 	 	 	
Ounces sold	48,023		 	70,354		 	118,377		
 	 	 	 	 	 	
Cash operating cost per ounce	$	1,015		 	$	1,133		 	$	1,085		

												
 	Six Months Ended 
 June 30, 2014	
 		
 	Wassa	 	Bogoso	 	Combined	
Cost of sales excluding depreciation and amortization	$	66,205		 	$	96,523		 	$	162,728		
     Royalties	(4,145	)	 	(4,091	)	 	(8,236	)	
     Metals inventory net realizable value adjustment	(319	)	 	(653	)	 	(972	)	
Cash operating costs	$	61,741		 	$	91,779		 	$	153,520		
 	 	 	 	 	 	
Ounces sold	64,284		 	63,249		 	127,533		
 	 	 	 	 	 	
Cash operating cost per ounce	$	960		 	$	1,451		 	$	1,204		
"Cash provided by operations before working capital changes" is calculated by subtracting the "Changes in working capital" from "Net cash provided by operating activities" as found in the statements of cash flows.
We use cash operating cost per ounce and cash (used in)/provided by operations before working capital changes as key operating indicators. We monitor these measures monthly, comparing each month's values to prior periods' values to detect trends that may indicate increases or decreases in operating efficiencies. These measures are also compared against budget to alert management of trends that may cause actual results to deviate from planned operational results. We provide these measures to the investors to allow them to also monitor operational efficiencies of the mines owned by the Company. We calculate these measures for both individual operating units and on a consolidated basis.
Cash operating cost per ounce and cash provided by operations before working capital changes should be considered as non-GAAP financial measures as defined in the Canadian securities laws and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with IFRS. There are material limitations associated with the use of such non-GAAP measures. Since these measures do not incorporate revenues, changes in working capital and non-operating cash costs, they are not necessarily indicative of operating profit or cash flow from operations as determined under IFRS. Changes in numerous factors including, but not limited to, mining rates, milling rates, ore grade, gold recovery, costs of labor, consumables and mine site general and administrative activities can cause these measures to increase or decrease. We believe that these measures are similar to the measures of other gold mining companies, but may not be comparable to similarly titled measures in every instance.

18

Adjusted net loss attributable to Golden Star shareholders
The table below shows the reconciliation of net loss attributable to Golden Star shareholders to adjusted net loss attributable to Golden Star shareholders and adjusted net loss per share attributable to Golden Star shareholders:

																
(Stated in thousands of U.S dollars except per share data)	Three Months Ended 
 June 30,	 	Six Months Ended 
 June 30,	
 	2015	 	2014	 	2015	 	2014	
Net loss attributable to Golden Star shareholders	$	(61,503	)	 	$	(5,153	)	 	$	(74,630	)	 	$	(27,517	)	
Add back:	 	 	 	 	 	 	 	
Loss/(gain) on fair value of 5% Convertible Debentures	1,266		 	(2,392	)	 	5,002		 	7,782		
Severance charges	13,360		 	—		 	13,844		 	—		
Impairment charges	34,396		 	—		 	34,396		 	—		
 	(12,481	)	 	(7,545	)	 	(34,162	)	 	(19,735	)	
Adjustments attributable to non-controlling interest	(3,498	)	 	—		 	(3,547	)	 	—		
Adjusted net loss attributable to Golden Star shareholders	$	(15,979	)	 	$	(7,545	)	 	$	(37,709	)	 	$	(19,735	)	
 	 	 	 	 	 	 	 	
Adjusted net loss per share attributable to Golden Star shareholders	 	 	 	 	 	 	 	
Basic and diluted	$	(0.06	)	 	$	(0.03	)	 	$	(0.15	)	 	$	(0.08	)	
Weighted average shares outstanding - basic and diluted (millions)	259.5		 	259.4		 	259.5		 	259.3		
In order to indicate to stakeholders the Company's earnings excluding the non-cash (gain)/loss on the fair value of the Convertible Debentures, non-cash impairment charges and severance charges, the Company calculates "adjusted net income/(loss) attributable to Golden Star shareholders" and "adjusted net income/(loss) per share attributable to Golden Star shareholders" to supplement the condensed interim consolidated financial statements.
Adjusted net loss attributable to Golden Star shareholders and adjusted net loss per share attributable to Golden Star shareholders should be considered as non-GAAP financial measures as defined in the Canadian securities laws and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with GAAP. There are material limitations associated with the use of such non-GAAP measures. Since these measures do not incorporate all non-cash expense and income items, changes in working capital and non-operating cash costs, they are not necessarily indicative of operating profit or cash flow from operations as determined under IFRS. Changes in numerous factors including, but not limited to, our share price, risk free interest rates, gold prices, mining rates, milling rates, ore grade, gold recovery, costs of labor, consumables and mine site general and administrative activities can cause these measures to increase or decrease. The Company believes that these measures are similar to the measures of other gold mining companies, but may not be comparable to similarly titled measures in every instance.
OUTSTANDING SHARE DATA
As of July 29, 2015 , there were 259,374,879 common shares of the Company issued and outstanding, 16,246,891 stock options outstanding, 4,031,610 deferred share units outstanding and 5% Convertible Debentures which are convertible into 46,963,636 common shares. The share appreciation rights, performance share units and restricted share units are cash settled instruments.
CRITICAL ACCOUNTING ESTIMATES AND ASSUMPTIONS
The critical accounting estimates and assumptions are disclosed in Note 4 of the audited consolidated financial statements for the year ended December 31, 2014.
CHANGES IN ACCOUNTING POLICIES
The changes in accounting policies and standards, interpretations and amendments not yet effective are disclosed in Note 3 of the condensed interim consolidated financial statements for the six months ended June 30, 2015 .

19

FINANCIAL INSTRUMENTS

						
(Stated in thousands of U.S dollars)	Fair value at
June 30, 2015	Basis of measurement	Associated risks	
Cash and cash equivalents	$	21,448		Loans and receivables	Interest/Credit/Foreign exchange	
Accounts receivable	10,208		Loans and receivables	Foreign exchange/Credit	
Trade and other payables	77,249		Amortized cost	Foreign exchange/Interest	
5% Convertible Debentures	52,848		Fair value through profit and loss	Interest	
Ecobank Loan I, net of loan fees	37,205		Amortized cost	Interest	
Ecobank Loan II, net of loan fees	14,375		Amortized cost	Interest	
Equipment financing facility	5,929		Amortized cost	Interest	
Finance leases	3,395		Amortized cost	Interest	
Other long term liabilities	13,383		Amortized cost	Interest	
Loans and receivables - Cash and cash equivalents and accounts receivables mature in the short term and approximate their fair values.
Amortized costs - Trade and other payables, the Ecobank Loan I and II, the equipment financing facility and the finance leases approximate their carrying values as the interest rates are comparable to current market rates. Carrying value of the other long term liabilities has been discounted to reflect its fair value.
Fair value through profit or loss - The debt component of the 5% Convertible Debentures is valued based on discounted cash flows and the conversion feature is valued using a Black Scholes model. The risk free interest rate used in the fair value computation is the interest rate on US treasury rate with maturity similar to the remaining life of the convertible debenture. The discount rate used is determined by adding the risk premium to the risk free interest rate. A market-based volatility rate was also applied to the fair value computation. For the three and six months ended June 30, 2015 , a revaluation loss of $1.3 million and $5.0 million were recorded respectively.
DISCLOSURES ABOUT RISKS
The Company's exposure to significant risks include, but is not limited to, the following risks: change in interest rates on our debt, change in foreign currency exchange rates, commodity price fluctuations, liquidity risk and credit risk. In recognition of the Company's increase in accounts payable, the Company cannot guarantee that vendors or suppliers will not suspend or deny delivery of products or services to the Company. For a complete discussion of the risks, refer to the Company's Annual Information Form for the year ended December 31, 2014 available on the SEDAR website at www.sedar.com.
CONTROLS AND PROCEDURES
Disclosure Controls and Procedures
The Company's management, with the participation of its President and Chief Executive Officer and Executive Vice President and Chief Financial Officer, has evaluated the effectiveness of the Company's disclosure controls and procedures. Based upon the results of that evaluation, the Company's President and Chief Executive Officer and Executive Vice President and Chief Financial Officer have concluded that, as of the end of the period covered by this MD&A, the Company's disclosure controls and procedures were effective to provide reasonable assurance that the information required to be disclosed by the Company in reports it files is recorded, processed, summarized and reported, within the appropriate time periods and is accumulated and communicated to management, including the President and Chief Executive Officer and Executive Vice President and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.
Management's Report on Internal Control Over Financial Reporting
The Company's management, with the participation of its President and Chief Executive Officer and Executive Vice President and Chief Financial Officer, are responsible for establishing and maintaining adequate internal control over financial reporting. Under the supervision of the President and Chief Executive Officer and Executive Vice President and Chief Financial Officer, the Company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with IFRS. The Company's internal control over financial reporting includes policies and procedures that:

•	pertain to the maintenance of records that accurately and fairly reflect, in reasonable detail, the transactions and dispositions of assets of the Company;	

20

		
•	provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with IFRS and that the Company's receipts and expenditures are made only in accordance with authorizations of management and the Company's directors; and	

•	provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the Company's assets that could have a material effect on the Company's consolidated financial statements.	
The Company's management, including the President and Chief Executive Officer and Executive Vice President and Chief Financial Officer, believes that any disclosure controls and procedures or internal control over financial reporting, no matter how well conceived and operated, can provide only reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, they cannot provide absolute assurance that all control issues and instances of fraud, if any, within the Company have been prevented or detected. These inherent limitations include the realities that judgments in decision-making can be faulty, and that breakdowns can occur because of simple error or mistake. Additionally, controls can be circumvented by the individual acts of some persons, by collusion of two or more people, or by unauthorized override of the control. The design of any control system also is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Accordingly, because of the inherent limitations in a cost effective control system, misstatements due to error or fraud may occur and not be detected.
Changes in Internal Control Over Financial Reporting
There has been no change in the Company's design of internal controls and procedures over financial reporting that has materially affected, or is reasonable likely to materially affect, the Company's internal control over financial reporting during the period covered by this MD&A.
ADDITIONAL INFORMATION
Additional information regarding the Company, including the Company's Annual Information Form for the year ended December 31, 2014, is available under the Company's profile on SEDAR at www.sedar.com.

21

Condensed Interim Consolidated Financial Statements
For the Three and Six Months Ended June 30, 2015 and June 30, 2014

TABLE OF CONTENTS

	
			
FINANCIAL STATEMENTS	 	 	
 	 	 	
CONDENSED INTERIM CONSOLIDATED STATEMENTS OF OPERATIONS	 	3	
CONDENSED INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS	 	4	
CONDENSED INTERIM CONSOLIDATED BALANCE SHEETS	 	5	
CONDENSED INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS	 	6	
CONDENSED INTERIM CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY	 	7	
 	 	 	
NOTES TO THE FINANCIAL STATEMENTS	 	 	
 	 	 	
1. NATURE OF OPERATIONS	 	8	
2. BASIS OF PRESENTATION	 	8	
3. CHANGES IN ACCOUNTING POLICIES	 	8	
4. FINANCIAL INSTRUMENTS	 	9	
5. INVENTORIES	 	10	
6. MINING INTERESTS	 	10	
7. INCOME TAXES	 	11	
8. ACCOUNTS PAYABLE AND ACCRUED LIABILITIES	 	11	
9. REHABILITATION PROVISIONS	 	11	
10. DEBT	 	12	
11. COMMITMENTS AND CONTINGENCIES	 	13	
12. SHARE-BASED COMPENSATION	 	13	
13. COST OF SALES EXCLUDING DEPRECIATION AND AMORTIZATION	 	15	
14. FINANCE EXPENSE, NET	 	15	
15. RELATED PARTY TRANSACTIONS	 	16	
16. OPERATIONS BY SEGMENT AND GEOGRAPHIC AREA	 	16	
17. SUPPLEMENTAL CASH FLOW INFORMATION	 	17	
18. IMPAIRMENT CHARGES	 	18	
19. SUBSEQUENT EVENT	 	19	

GOLDEN STAR RESOURCES LTD.
CONDENSED INTERIM CONSOLIDATED STATEMENTS OF OPERATIONS
(Stated in thousands of U.S. dollars except shares and per share data)
(unaudited)

	
																		
	Notes	 	Three Months Ended 
 June 30,	 	Six Months Ended 
 June 30,	
 	 	 	2015	 	2014	 	2015	 	2014	

Revenue	 	 	$	65,796		 	$	79,567		 	$	142,315		 	$	164,571		
Cost of sales excluding depreciation and amortization	13	 	78,738		 	78,432		 	150,941		 	162,728		
Depreciation and amortization	 	 	13,175		 	5,182		 	24,760		 	11,798		
Mine operating loss	 	 	(26,117	)	 	(4,047	)		(33,386	)		(9,955	)	
 	 	 	 	 	 	 	 	 	 	
Other expenses/(income)	 	 	 	 	 	 	 	 	 	
Exploration expense	 	 	325		 	182		 	637		 	266		
General and administrative	 	 	4,829		 	4,120		 	8,461		 	9,826		
Finance expense, net	14	 	2,104		 	894		 	4,774		 	3,313		
Other income	 	 	(49	)	 	(143	)	 	(2,555	)	 	(166	)	
Loss/(gain) on fair value of 5% Convertible Debentures	4	 	1,266		 	(2,392	)	 	5,002		 	7,782		
Impairment charges	18	 	34,396		 	—		 	34,396		 	—		
Loss before tax	 	 	(68,988	)	 	(6,708	)	 	(84,101	)	 	(30,976	)	
Income tax expense	7	 	—		 	—		 	—		 	85		
Net loss	 	 	$	(68,988	)	 	$	(6,708	)	 	$	(84,101	)	 	$	(31,061	)	
Net loss attributable to non-controlling interest	 	 	(7,485	)	 	(1,555	)	 	(9,471	)	 	(3,544	)	
Net loss attributable to Golden Star shareholders	 	 	$	(61,503	)	 	$	(5,153	)	 	$	(74,630	)	 	$	(27,517	)	
 	 	 	 	 	 	 	 	 	 	
Net loss per share attributable to Golden Star shareholders	 	 	 	 	 	 	 	 	 	
Basic and diluted		 	$	(0.24	)	 	$	(0.02	)	 	$	(0.29	)	 	$	(0.11	)	
Weighted average shares outstanding-basic and diluted (millions)	 	 	259.5		 	259.4		 	259.5		 	259.3		
The accompanying notes are an integral part of the condensed interim consolidated financial statements.

3

GOLDEN STAR RESOURCES LTD.
CONDENSED INTERIM CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS
(Stated in thousands of U.S. dollars)
(unaudited)

	
																		
 	 	 	Three Months Ended 
 June 30,	 	Six Months Ended 
 June 30,	
 	 	 	2015	 	2014	 	2015	 	2014	
 	 	 	 	 	 	 	 	 	 	
OTHER COMPREHENSIVE LOSS	 	 	 	 	 	 	 	 	 	
Net loss	 	 	$	(68,988	)	 	$	(6,708	)	 	$	(84,101	)	 	$	(31,061	)	
Comprehensive loss	 	 	(68,988	)	 	(6,708	)	 	(84,101	)	 	(31,061	)	
Comprehensive loss attributable to non-controlling interest	 	 	(7,485	)	 	(1,555	)	 	(9,471	)	 	(3,544	)	
Comprehensive loss attributable to Golden Star shareholders	 	 	$	(61,503	)	 	$	(5,153	)	 	$	(74,630	)	 	$	(27,517	)	
The accompanying notes are an integral part of the condensed interim consolidated financial statements.

4

GOLDEN STAR RESOURCES LTD.
CONDENSED INTERIM CONSOLIDATED BALANCE SHEETS
(Stated in thousands of U.S. dollars)
(unaudited)

	
										
 	 	 	As of	 	As of	
 	Notes	 	June 30,
2015	 	December 31,
2014	
 	 	 	 	 	 	
ASSETS	 	 	 	 	 	
CURRENT ASSETS	 	 	 	 	 	
Cash and cash equivalents	 	 	$	21,448		 	$	39,352		
Accounts receivable	 	 	10,208		 	14,832		
Inventories	5	 	27,586		 	54,279		
Prepaids and other	 	 	5,618		 	4,767		
Total Current Assets	 	 	64,860		 	113,230		
RESTRICTED CASH	 	 	2,043		 	2,041		
MINING INTERESTS	6	 	132,414		 	142,782		
Total Assets	 	 	$	199,317		 	$	258,053		
 	 	 	 	 	 	
LIABILITIES	 	 	 	 	 	
CURRENT LIABILITIES	 	 	 	 	 	
Accounts payable and accrued liabilities	8	 	$	124,971		 	$	123,451		
Current portion of rehabilitation provisions	9	 	7,087		 	4,562		
Current portion of long term debt	10	 	19,111		 	17,181		
Total Current Liabilities	 	 	151,169		 	145,194		
LONG TERM DEBT	10	 	108,024		 	85,798		
REHABILITATION PROVISIONS	9	 	77,537		 	81,254		
Total Liabilities	 	 	336,730		 	312,246		
 	 	 	 	 	 	
SHAREHOLDERS' EQUITY	 	 	 	 	 	
SHARE CAPITAL	 	 	 	 	 	
First preferred shares, without par value, unlimited shares authorized. No shares issued and outstanding	 	 	—		 	—		
Common shares, without par value, unlimited shares authorized	 	 	695,266		 	695,266		
CONTRIBUTED SURPLUS	 	 	32,413		 	31,532		
DEFICIT	 	 	(800,253	)	 	(725,623	)	
Total Golden Star (Deficit)/Equity	 	 	(72,574	)	 	1,175		
NON-CONTROLLING INTEREST	 	 	(64,839	)	 	(55,368	)	
Total Equity	 	 	(137,413	)	 	(54,193	)	
Total Liabilities and Shareholders' Equity	 	 	$	199,317			$	258,053		
The accompanying notes are an integral part of the condensed interim consolidated financial statements.

Signed on behalf of the Board,

"Timothy C. Baker"                              "William L. Yeates"
Timothy C. Baker, Director                        William L. Yeates, Director

5

GOLDEN STAR RESOURCES LTD.
CONDENSED INTERIM CONSOLIDATED STATEMENTS OF CASH FLOWS
(Stated in thousands of U.S. dollars)
(unaudited)

	
																		
	 	 	Three Months Ended 
 June 30,	 	Six Months Ended 
 June 30,	
 	Notes	 	2015	 	2014	 	2015	 	2014	
 	 	 	 	 	 	 	 	 	 	
OPERATING ACTIVITIES:	 	 	 	 	 	 	 	 	 	
Net loss	 	 	$	(68,988	)	 	$	(6,708	)	 	$	(84,101	)	 	$	(31,061	)	
Reconciliation of net loss to net cash (used in)/provided by operating activities:	 	 	 	 	 	 	 	 	 	
Depreciation and amortization	 	 	13,185		 	5,213		 	24,779		 	11,829		
Net realizable value adjustment on inventory	 	 	721		 	—		 	1,524		 	—		
Impairment charges	18	 	34,396		 	—		 	34,396		 	—		
Accrued severance	 	 	9,420		 	—		 	9,420		 	—		
Loss on retirement of asset	 	 	—		 	27		 	—		 	70		
Share-based compensation	12	 	1,530		 	430		 	2,059		 	1,868		
Deferred income tax expense	7	 	—		 	—		 	—		 	85		
Loss/(gain) on fair value of 5% Convertible Debentures	4	 	1,266		 	(2,392	)	 	5,002		 	7,782		
Gain on deferral of other long term liabilities	10	 	—		 	—		 	(2,432	)	 	—		
Accretion of other long term liabilities	 	 	304		 	—		 	304		 	—		
Accretion of rehabilitation provisions	 	 	441		 	437		 	881		 	873		
Amortization of financing fees	 	 	62		 	62		 	124		 	124		
Reclamation expenditures	 	 	(1,007	)	 	(871	)	 	(2,073	)	 	(1,538	)	
Other	 	 	—		 	—		 	26		 	—		
Changes in working capital	17	 	6,006		 	4,753		 	12,265		 	8,972		
Net cash (used in)/provided by operating activities	 	 	(2,664	)	 	951		 	2,174		 	(996	)	
INVESTING ACTIVITIES:	 	 	 	 	 	 	 	 	 	
Additions to mining properties	 	 	(77	)	 	(4,601	)	 	(96	)	 	(12,975	)	
Additions to plant and equipment	 	 	(874	)	 	—		 	(874	)	 	(499	)	
Additions to construction in progress	 	 	(11,131	)	 	(1,671	)	 	(23,575	)	 	(5,010	)	
Capitalized interest	 	 	(672	)	 	—		 	(991	)	 	—		
Change in accounts payable and deposits on mine equipment and material	 	 	2,063		 	(5,394	)	 	(815	)	 	(7,309	)	
Other investing activities	 	 	—		 	—		 	—		 	(5	)	
Net cash used in investing activities	 	 	(10,691	)	 	(11,666	)	 	(26,351	)	 	(25,798	)	
FINANCING ACTIVITIES:	 	 	 	 	 	 	 	 	 	
Principal payments on debt	 	 	(4,379	)	 	(3,695	)	 	(8,727	)	 	(5,345	)	
Proceeds from debt agreements	 	 	15,000		 	—		 	15,000		 	10,000		
Net cash provided by/(used in) financing activities	 	 	10,621		 	(3,695	)	 	6,273		 	4,655		
Decrease in cash and cash equivalents	 	 	(2,734	)	 	(14,410	)	 	(17,904	)	 	(22,139	)	
Cash and cash equivalents, beginning of period	 	 	24,182		 	57,822		 	39,352		 	65,551		
Cash and cash equivalents, end of period	 	 	$	21,448		 	$	43,412		 	$	21,448		 	$	43,412		
See Note 17 for supplemental cash flow information.

The accompanying notes are an integral part of the condensed interim consolidated financial statements.

6

GOLDEN STAR RESOURCES LTD.
CONDENSED INTERIM CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY
(Stated in thousands of U.S. dollars except share data)
(unaudited)

	
																								
 	 	Number of
Common
Shares  	 	Share
Capital  	 	Contributed
Surplus	 	Deficit	 	Non-Controlling Interest	 	Total
Shareholders'
Equity 	
 	 				 								
Balance at December 31, 2013	 	259,105,970		 	$	694,906		 	$	29,346		 	$	(652,544	)	 	$	(45,006	)	 	$	26,702		
Shares issued under options	 	268,909		 	216		 	(216	)	 	—		 	—		 	—		
Options granted net of forfeitures	 	—		 	—		 	1,339		 	—		 	—		 	1,339		
DSU's granted	 	—		 	—		 	269		 	—		 	—		 	269		
Net loss	 	—		 	—		 	—		 	(27,517	)	 	(3,544	)	 	(31,061	)	
Balance at June 30, 2014	 	259,374,879		 	$	695,122		 	$	30,738		 	$	(680,061	)	 	$	(48,550	)	 	$	(2,751	)	

																								
Balance at December 31, 2014	 	259,490,083		 	$	695,266		 	$	31,532		 	$	(725,623	)	 	$	(55,368	)	 	$	(54,193	)	
Options granted net of forfeitures	 	—		 	—		 	405		 	—		 	—		 	405		
DSU's granted	 	—		 	—		 	476		 	—		 	—		 	476		
Net loss	 	—		 	—		 	—		 	(74,630	)	 	(9,471	)	 	(84,101	)	
Balance at June 30, 2015	 	259,490,083		 	$	695,266		 	$	32,413		 	$	(800,253	)	 	$	(64,839	)	 	$	(137,413	)	

The accompanying notes are an integral part of the condensed interim consolidated financial statements.

7

GOLDEN STAR RESOURCES LTD.
NOTES TO THE CONDENSED INTERIM CONSOLIDATED FINANCIAL STATEMENTS
FOR THE THREE AND SIX MONTHS ENDED JUNE 30, 2015
(All currency amounts in tables are in thousands of U.S. dollars unless noted otherwise)
(unaudited)

1 . NATURE OF OPERATIONS
Golden Star Resources Ltd. ("Golden Star" or "the Company" or "we" or "our") is a Canadian federally-incorporated, international gold mining and exploration company headquartered in Toronto, Canada. The Company's shares are listed on the Toronto Stock Exchange (the "TSX") under the symbol GSC, the New York Stock Exchange MKT(the "NYSE MKT") under the symbol GSS and the Ghana stock exchange under the symbol GSR. The Company's registered office is located at 150 King Street West, Sun Life Financial Tower, Suite 1200, Toronto, Ontario, M5H 1J9, Canada.
Through a 90% owned subsidiary, Golden Star (Wassa) Limited, we own and operate the Wassa open-pit gold mine, Wassa underground development project and a carbon-in-leach ("CIL") processing plant (collectively, “Wassa”), located approximately 35 kilometers from the town of Bogoso, Ghana. Through our 90% owned subsidiary Golden Star (Bogoso/Prestea) Limited, we own and operate the Bogoso gold mining and processing operation (“Bogoso”) located near the town of Bogoso, Ghana. Golden Star also has a 90% interest in the Prestea Underground mine in Ghana. We hold interests in several gold exploration projects in Ghana and other parts of West Africa, and in South America we hold and manage exploration properties in Brazil.
At Bogoso, the Company processes both refractory and non-refractory ore. The Company has made a decision to suspend the refractory operation in the third quarter of 2015 in conjunction with its business strategy to focus on lower cost mining opportunities. Impairment charges relating to the refractory operation has been recognized at June 30, 2015.
2 . BASIS OF PRESENTATION
Statement of compliance
The unaudited condensed interim consolidated financial statements have been prepared in accordance with International Financial Reporting Standards (“IFRS”) as issued by the International Accounting Standards Board (“IASB”) including International Accounting Standards ("IAS") 34 Interim financial reporting. The condensed interim consolidated financial statements should be read in conjunction with the annual financial statements for the year ended December 31, 2014, which have been prepared in accordance with IFRS as issued by the IASB. The accounting policies and methods of application adopted are consistent with those disclosed in Note 3 of the Company’s consolidated financial statements for the year ended December 31, 2014, except for the changes in accounting policies as described below.
These condensed interim consolidated financial statements were approved by the Board of Directors of the Company on July 29, 2015 .
Basis of presentation
These condensed interim consolidated financial statements include the accounts of the Company and its subsidiaries, whether owned directly or indirectly. The financial statements of the subsidiaries are prepared for the same period as the Company using consistent accounting policies for all periods presented. All inter-company balances and transactions have been eliminated. Subsidiaries are entities controlled by the Company. Non-controlling interests in the net assets of consolidated subsidiaries are a separate component of the Company's equity.
These condensed interim consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and discharge of all liabilities in the normal course of business.
The condensed interim consolidated financial statements have been prepared on a historical cost basis, except for derivative financial instruments which are measured at fair value through profit or loss.
3 . CHANGES IN ACCOUNTING POLICIES
The Company has adopted the following new and revised standards, effective January 1, 2015. These changes were made in accordance with the applicable transitional provisions.
IFRS 13 Fair value measurements provides clarification related to the portfolio exception. The adoption of this improvement did not result in any impact to the Company's financial statements.

8

IFRS 8 Operating segments amended to require (i) disclosure of judgements made by management in aggregating segments, and (ii) a reconciliation of segment assets to the entity's assets when segment assets are reported. The adoption of this amendment did not result in any impact to the Company's financial statements.
4 . FINANCIAL INSTRUMENTS
The following tables illustrate the classification of the Company's recurring fair value measurements for financial instruments within the fair value hierarchy and their carrying values and fair values as at June 30, 2015 and December 31, 2014 :

																		
 	 	 	June 30, 2015	 	December 31, 2014	
 	Level	 	Carrying value	 	Fair value	 	Carrying value	 	Fair value	
Financial Liabilities	 	 	 	 	 	 	 	 	 	
Fair value through profit or loss	 	 	 	 	 	 	 	 	 	
5% Convertible Debentures	3	 	$	52,848		 	$	52,848		 	$	47,846		 	$	47,846		
There were no non-recurring fair value measurements of financial instruments as at June 30, 2015 .
The three levels of the fair value hierarchy are:
Level 1 - Unadjusted quoted prices in active markets for identical assets or liabilities;
Level 2 - Inputs other than quoted prices that are observable for the asset or liability either directly or indirectly; and
Level 3 - Inputs that are not based on observable market data.
The Company's policy is to recognize transfers into and transfers out of the fair value hierarchy levels as of the date of the event or change in circumstances that caused the transfer. During the six months ended June 30, 2015 , there were no transfers between Level 1 and Level 2 fair value measurements, and no transfers into or out of Level 3 fair value measurements.
The Company's finance department is responsible for performing the valuation of financial instruments, including Level 3 fair values. The valuation processes and results are reviewed and approved by the Executive Vice President and Chief Financial Officer at least once every quarter, in line with the Company's quarterly reporting dates. Valuation results are discussed with the Audit Committee as part of its quarterly review of the Company's consolidated financial statements.
The valuation techniques that are used to measure fair value are as follows:
5% Convertible Debentures
The debt component of the 5% Convertible Debentures is valued based on discounted cash flows and the conversion feature is valued based on a Black-Scholes model. The risk free interest rate used in the fair value computation is the interest rate on US treasury bills with maturity similar to the remaining life of the 5% Convertible Debentures. The discount rate used is determined by adding our risk premium to the risk free interest rate. A market-based volatility rate has been applied to the fair value computation. Inputs used to determine the fair value on June 30, 2015 and December 31, 2014 were as follows:

						
 	June 30, 2015	 	December 31, 2014	
5% Convertible Debentures	 	 	 	
Risk free interest rate	0.6	%	 	0.9	%	
Risk premium	25.0	%	 	25.1	%	
Volatility	40.0	%	 	40.0	%	
Remaining life (years)	1.9		 	2.4		
The following table presents the changes in the Level 3 investments for the six months ended June 30, 2015 :

				
 	Fair value	
Balance, December 31, 2014	$	47,846		
Loss in the period included in earnings	5,002		
Balance, June 30, 2015	$	52,848		

9

If the risk premium increases by 5%, the fair value of the 5% Convertible Debentures would decrease and the related gain in the consolidated statement of operations would increase by $4.6 million for the six months ended June 30, 2015 . In general, an increase in risk premium would increase the gain on fair value of the 5% Convertible Debentures.
5 . INVENTORIES
Inventories include the following components:

								
 	As of	 	As of	
 	June 30, 2015	 	December 31, 2014	
Stockpiled ore	$	14,283		 	$	21,035		
In-process ore	2,538		 	8,093		
Materials and supplies	10,765		 	25,151		
Total	$	27,586		 	$	54,279		
The cost of inventories expensed for the six months ended June 30, 2015 and 2014 was $143.8 million and $154.5 million , respectively.
A total of $12.9 million of materials and supplies inventories and $12.8 million of refractory ore inventory were written off in the three and six months ended June 30, 2015 (See Note 18 ). $2.2 million of net realizable value adjustments were recorded for stockpiled and in-process ore in the six months ended June 30, 2015 (June 30, 2014 - $1.4 million ). For the six months ended June 30, 2014, $1.0 million of materials and supplies inventories net realizable value adjustments were recorded due to obsolescence.
6 . MINING INTERESTS
The following table shows the breakdown of the cost, accumulated depreciation and net book value of plant and equipment, and mining properties:

																
 	Plant and equipment	 	Mining properties	 	Construction in progress	 	Total	
Cost	 	 	 	 	 	 	 	
As of December 31, 2014	$	454,074		 	$	713,471		 	$	38,716		 	$	1,206,261		
Additions	874		 	96		 	23,575		 	24,545		
Transfers	3,911		 	923		 	(4,834	)	 	—		
Capitalized interest	—		 	—		 	991		 	991		
Disposals and other	(602	)	 	—		 	—		 	(602	)	
As of June 30, 2015	$	458,257		 	$	714,490			$	58,448		 	$	1,231,195		
 	 	 	 	 	 	 	 	
Accumulated depreciation	 	 	 	 	 	 	 	
As of December 31, 2014	$	405,844		 	$	648,329		 	$	9,306		 	$	1,063,479		
Depreciation and amortization	13,787		 	12,808		 	—		 	26,595		
Disposals and other	(27	)	 	—		 	—		 	(27	)	
Impairment charges (Note 18)	4,544		 	4,190		 	—		 	8,734		
As of June 30, 2015	$	424,148		 	$	665,327			$	9,306		 	$	1,098,781		
 	 	 	 	 	 	 	 	
Carrying amount	 	 	 	 	 	 	 	
As of December 31, 2014	$	48,230		 	$	65,142			$	29,410		 	$	142,782		
As of June 30, 2015	$	34,109		 	$	49,163			$	49,142		 	$	132,414		
As at June 30, 2015 , equipment under finance leases had net carrying amounts of $2.3 million . The total minimum lease payments are disclosed in Note 10 - Debt.
No depreciation is charged to construction in progress assets. Accumulated depreciation of construction in progress assets represents impairment taken on these assets in previous years.

10

7 . INCOME TAXES
Income tax expense is recognized based on management's estimate of the weighted average annual income tax rate expected for the full financial year. The provision for income taxes includes the following components:  

																
 	Three Months Ended 
 June 30,	 	Six Months Ended 
 June 30,	
 	2015	 	2014	 	2015	 	2014	
Current expense:	 	 	 	 	 	 	 	
Canada	$	—		 	$	—		 	$	—		 	$	—		
Foreign	—		 	—		 	—		 	—		
Deferred tax recovery:	 	 	 	 	 	 	 	
Canada	—		 	—		 	—		 	—		
Foreign	—		 	—		 	—		 	85		
Tax expense	$	—			$	—			$	—			$	85		

8 . ACCOUNTS PAYABLE AND ACCRUED LIABILITIES
Accounts payable and accrued liabilities include the following components:

								
 	As of	 	As of	
 	June 30, 2015	 	December 31, 2014	
Trade and other payables	$	77,249		 	$	79,528		
Accrued liabilities	33,590		 	38,201		
Payroll related liabilities	4,712		 	4,954		
Accrued severance	9,420		 	768		
Total	$	124,971		 	$	123,451		
During the six months ended June 30, 2015 , certain payables have been reclassified to other long-term liabilities (See Note 10 ).
In the second quarter of 2015, the Company recorded accrued severance of $13.0 million relating to the planned suspension of the Bogoso refractory operation in the third quarter of 2015, $3.6 million of this amount has been paid by June 30, 2015.
9 . REHABILITATION PROVISIONS
At June 30, 2015 , the total undiscounted amount of the estimated future cash needs was estimated to be $89.2 million. A discount rate assumption of 2% and an inflation rate assumption of 2% were used to value the rehabilitation provisions. The changes in the carrying amount of the rehabilitation provisions are as follows:

								
 	Six Months Ended 
 June 30, 2015	 	Year Ended
December 31, 2014	
Beginning balance	$	85,816		 	$	86,310		
Accretion of rehabilitation provisions	881		 	1,746		
Changes in estimates	—		 	1,314		
Cost of reclamation work performed	(2,073	)	 	(3,554	)	
Balance at the end of the period	$	84,624		 	$	85,816		
 	 	 	 	
Current portion	$	7,087		 	$	4,562		
Long term portion	77,537		 	81,254		
Total	$	84,624		 	$	85,816		

11

10 . DEBT
The following table displays the components of our current and long term debt instruments:

								
 	As of	 	As of	
 	June 30, 2015	 	December 31, 2014	
Current debt:	 	 	 	
Equipment financing credit facility	$	3,441		 	$	4,512		
Ecobank Loan I net of loan fees	11,686		 	11,686		
Ecobank Loan II net of loan fees	3,000		 	—		
Finance leases	984		 	983		
Total current debt	$	19,111		 	$	17,181		
Long term debt:	 	 	 	
Equipment financing credit facility	$	2,488		 	$	3,833		
Ecobank Loan I net of loan fees	25,519		 	31,239		
Ecobank Loan II net of loan fees	11,375		 	—		
Finance leases	2,411		 	2,880		
5% Convertible Debentures at fair value (see Note 4)	52,848		 	47,846		
Other long term liabilities	13,383		 	—		
Total long term debt	$	108,024		 	$	85,798		
Other long term liabilities
During the six months ended June 30, 2015 , the Company reached an agreement with Volta River Authority, the electricity provider in Ghana, on a mutually acceptable repayment plan. The plan includes a deferral of $15.5 million to 2016 and 2017 which has been reclassified from accounts payable to other long term liabilities, net of a $2.4 million gain on deferral of other long term liabilities and $0.3 million of accretion thereof in the six months ended June 30, 2015 .
Ecobank Loan II
During the three and six month periods ended June 30, 2015 , the Company drew down $15.0 million on the Ecobank loan II. The Ecobank loan II has a term of 60 months from the date of initial drawdown and is secured by, among other things, Wassa’s existing plant, machinery and equipment. The interest rate on the loan is three month LIBOR plus 11% per annum, payable monthly in arrears beginning a month following the initial drawdown. Payment of principal commences six months following the initial drawdown and is thereafter payable quarterly in arrears. The Company will be required to adhere to certain financial covenants from the end of 2016. The Company has until the third quarter of 2015 to make further draw downs on the remaining $10.0 million available under the loan.

12

Schedule of payments on outstanding debt as of June 30, 2015 :

																											
 	 	Six months ending December 31, 2015	 	2016	 	2017	 	2018	 	2019	 	2020	 	Maturity	
Equipment financing loans	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Principal	 	$	2,096		 	$	2,761		 	$	931		 	$	141		 	$	—		 	$	—		 	 2013 to 2018	
Interest	 	172		 	180		 	34		 	4		 	—		 	—		 	 	
 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Ecobank Loan I	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Principal	 	5,843		 	11,686		 	11,686		 	8,765		 	—		 	—		 	2018	
Interest	 	1,716		 	2,610		 	1,506		 	392		 	—		 	—		 	 	
 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Ecobank Loan II	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Principal	 	—		 	3,333		 	3,333		 	3,333		 	3,333		 	1,668		 	2020	
Interest	 	860		 	1,577		 	1,191		 	810		 	429		 	72		 	 	
 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Finance leases	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Principal	 	515		 	1,016		 	1,088		 	776		 	—		 	—		 	2018	
Interest	 	112		 	172		 	100		 	24		 	—		 	—		 	 	
 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
5% Convertible Debentures	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Principal	 	—		 	—		 	77,490		 	—		 	—		 	—		 	June 1, 2017	
Interest	 	1,938		 	3,875		 	1,937		 	—		 	—		 	—		 	 	
 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Other long term liabilities	 	—		 	7,078		 	8,433		 	—		 	—		 	—		 	 	
 	 	 	 	 	 	 	 	 	 	 	 	 	 	 	
Total principal	 	$	8,454		 	$	25,874		 	$	102,961		 	$	13,015		 	$	3,333		 	$	1,668		 	 	
Total interest	 	4,798		 	8,414		 	4,768		 	1,230		 	429		 	72		 	 	
 	 	$	13,252			$	34,288			$	107,729			$	14,245		 	$	3,762		 	$	1,740		 	 	

11 . COMMITMENTS AND CONTINGENCIES
The Company has capital commitments of $3.5 million , all of which are expected to be incurred within the next six months.
12 . SHARE-BASED COMPENSATION
Non-cash employee compensation expenses recognized in general and administrative expense in the statements of operations are as follows:

																
 	Three Months Ended 
 June 30,	 	Six Months Ended 
 June 30,	
 	2015	 	2014	 	2015	 	2014	
Share-based compensation	$	1,530		 	$	430		 	$	2,059		 	$	1,868		

13

Share options
The fair value of option grants is estimated at the grant dates using the Black-Scholes option-pricing model. Fair values of options granted during the six months ended June 30, 2015 and 2014 were based on the weighted average assumptions noted in the following table:

				
 	Six Months Ended 
 June 30,	
 	2015	 	2014	
Expected volatility	68.98%	 	78.02%	
Risk-free interest rate	1.30%	 	1.43%	
Expected lives	5.59 years	 	5.94 years	
Dividend yield	0%	 	0%	
The weighted average fair value per option granted during the six months ended June 30, 2015 was $0.23 ( six months ended June 30, 2014 - $0.57 ). As at June 30, 2015 , there was $0.6 million of share-based compensation expense ( June 30, 2014 - $1.4 million ) relating to the Company's share options to be recorded in future periods.
A summary of option activity under the Company's Stock Option Plan during the six months ended June 30, 2015 are as follows:  

									
 	Options
(‘000)	 	Weighted–
Average
Exercise
price	 	Weighted–
Average
Remaining
Contractual
Term (Years)	
Outstanding as of December 31, 2014	14,935		 	2.01		 	5.7		
Granted	3,421		 	0.30		 	9.7		
Forfeited	(2,004	)	 	2.16		 	8.9		
Expired	(105	)	 	4.58		 	—		
Outstanding as of June 30, 2015	16,247		 	1.63		 	6.4		
 	 	 	 	 	 	
Exercisable as of December 31, 2014	10,808		 	2.33		 	5.0		
Exercisable as of June 30, 2015	12,145		 	2.00		 	5.2		
Share Bonus Plan
There were no bonus shares issued during the six months ended June 30, 2015 .
Deferred share units ("DSUs")
For the six months ended June 30, 2015 , the DSUs that were granted vested immediately and a compensation expense of $0.5 million was recognized for these grants ( six months ended June 30, 2014 - $0.3 million ). As of June 30, 2015 , there was no unrecognized compensation expense related to DSUs granted under the Company's DSU Plan.
A summary of DSU activity during the six months ended June 30, 2015 and 2014 :

							
 	 	Six Months Ended 
 June 30,	
 	 	2015	 	2014	
Number of DSUs, beginning of period ('000)	 	1,962		 	1,382		
Grants	 	2,069		 	359		
Exercises	 	—		 	(269	)	
Number of DSUs, end of period ('000)	 	4,031		 	1,472		
Share appreciation rights ("SARs")
As of June 30, 2015 , there was approximately $0.3 million of total unrecognized compensation cost related to unvested SARs ( June 30, 2014 - $1.1 million ). For the six months ended June 30, 2015 , the Company recognized an expense of $0.2 million related to these cash settled awards ( six months ended June 30, 2014 - nil).

14

A summary of the SARs activity during the six months ended June 30, 2015 and 2014 :

							
 	 	Six Months Ended 
 June 30,	
 	 	2015	 	2014	
Number of SARs, beginning of period ('000)	 	3,220		 	3,027		
Grants	 	700		 	460		
Forfeited	 	(524	)	 	(150	)	
Number of SARs, end of period ('000)	 	3,396		 	3,337		
Performance share units ("PSUs")
For the six months ended June 30, 2015 , the Company recognized an expense of $1.0 million ( six months ended June 30, 2014 - $0.1 million ). 
A summary of the PSU activity during the six months ended June 30, 2015 and 2014 :

							
 	 	Six Months Ended 
 June 30,	
 	 	2015	 	2014	
Number of PSUs, beginning of period ('000)	 	2,346		 	—		
Grants	 	8,010		 	2,475		
Forfeited	 	(366	)	 	—		
Number of PSUs, end of period ('000)	 	9,990		 	2,475		
13 . COST OF SALES EXCLUDING DEPRECIATION AND AMORTIZATION
Cost of sales excluding depreciation and amortization include the following components:

																
 	Three Months Ended 
 June 30,	 	Six Months Ended 
 June 30,	
 	2015	 	2014	 	2015	 	2014	
Mine operating expenses	$	60,247		 	$	72,877		 	$	129,009		 	$	155,628		
Severance charges	13,360		 	1,093		 	13,844		 	1,275		
Operating costs from/(to) metal inventory	1,117		 	162		 	(557	)	 	(3,383	)	
Inventory net realizable value adjustment	721		 	319		 	1,524		 	972		
Royalties	3,293		 	3,981		 	7,121		 	8,236		
 	$	78,738		 	$	78,432		 	$	150,941		 	$	162,728		

14 . FINANCE EXPENSE, NET
Finance income and expense include the following components:

																
 	Three Months Ended 
 June 30,	 	Six Months Ended 
 June 30,	
 	2015	 	2014	 	2015	 	2014	
Interest income	$	(8	)	 	$	(7	)	 	$	(17	)	 	$	(12	)	
Interest expense	2,423		 	2,207		 	4,191		 	4,216		
Net foreign exchange gain	(752	)	 	(1,743	)	 	(281	)	 	(1,764	)	
Accretion of rehabilitation provision	441		 	437		 	881		 	873		
 	$	2,104		 	$	894		 	$	4,774		 	$	3,313		

15

15 . RELATED PARTY TRANSACTIONS
There were no material related party transactions for the six months ended June 30, 2015 and 2014 other than the items disclosed below.
Key management personnel
Key management personnel is defined as members of the Board of Directors and certain senior officers. Compensation of key management personnel are as follows:

																
	Three Months Ended 
 June 30,		Six Months Ended 
 June 30,	
 	2015		2014		2015		2014	
Salaries, wages, and other benefits	$	634			$	599			$	1,394			$	1,195		
Bonus	328			360			656			868		
Share-based compensation	398			175			696			751		
	$	1,360			$	1,134			$	2,746			$	2,814		
16 . OPERATIONS BY SEGMENT AND GEOGRAPHIC AREA
The Company has reportable segments as identified by the individual mining operations. Segments are operations reviewed by the executive management. Each segment is identified based on quantitative and qualitative factors.

																					
Three Months Ended June 30,	 	Wassa	 	Bogoso	 	Other	 	Corporate	 	Total	
2015	 	 	 	 	 	 	 	 	 	 	
Revenue	 	$	29,615		 	$	36,181		 	$	—		 	$	—		 	$	65,796		
Mine operating expenses	 	24,412		 	35,835		 	—		 	—		 	60,247		
Severance charges	 	322		 	13,038		 	—		 	—		 	13,360		
Operating costs (to)/from metal inventory	 	(1,621	)	 	2,738		 	—		 	—		 	1,117		
Inventory net realizable value adjustment	 	721		 	—		 	—		 	—		 	721		
Royalties	 	1,483		 	1,810		 	—		 	—		 	3,293		
Cost of sales excluding depreciation and amortization	 	25,317		 	53,421		 	—		 	—		 	78,738		
Depreciation and amortization	 	2,841		 	10,334		 	—		 	—		 	13,175		
Mine operating margin/(loss)	 	1,457		 	(27,574	)	 	—		 	—		 	(26,117	)	
Impairment charges	 	—		 	34,396		 	—		 	—		 	34,396		
Net loss attributable to non-controlling interest	 	(255	)	 	(7,230	)	 	—		 	—		 	(7,485	)	
Net loss attributable to Golden Star	 	$	(253	)	 	$	(54,597	)	 	$	(223	)	 	$	(6,430	)	 	$	(61,503	)	
 	 	 	 	 	 	 	 	 	 	 	
Capital expenditures	 	$	6,979		 	$	5,775		 	$	—		 	$	—		 	$	12,754		
 	 	 	 	 	 	 	 	 	 	 	
2014	 	 	 	 	 	 	 	 	 	 	
Revenue	 	$	37,910		 	$	41,657		 	$	—		 	$	—		 	$	79,567		
Mine operating expenses	 	28,435		 	44,442		 	—		 	—		 	72,877		
Severance charges	 	925		 	168		 	—		 	—		 	1,093		
Operating costs (to)/from metal inventory	 	(889	)	 	1,051		 	—		 	—		 	162		
Inventory net realizable value adjustment	 	319		 	—		 	—		 	—		 	319		
Royalties	 	1,897		 	2,084		 	—		 	—		 	3,981		
Cost of sales excluding depreciation and amortization	 	30,687		 	47,745		 	—		 	—		 	78,432		
Depreciation and amortization	 	3,292		 	1,890		 	—		 	—		 	5,182		
Mine operating margin/(loss)	 	3,931		 	(7,978	)	 	—		 	—		 	(4,047	)	
Net loss attributable to non-controlling interest	 	(121	)	 	(1,434	)	 	—		 	—		 	(1,555	)	
Net income/(loss) attributable to Golden Star	 	$	412		 	$	(3,147	)	 	$	(171	)	 	$	(2,247	)	 	$	(5,153	)	
 	 	 	 	 	 	 	 	 	 	 	
Capital expenditures	 	$	2,570		 	$	3,702		 	$	—		 	$	—		 	$	6,272		

16

	
																					
Six Months Ended June 30,	 	Wassa	 	Bogoso	 	Other	 	Corporate	 	Total	
2015	 	 	 	 	 	 	 	 	 	 	
Revenue	 	$	57,727		 	$	84,588		 	$	—		 	$	—		 	$	142,315		
Mine operating expenses	 	49,231		 	79,778		 	—		 	—		 	129,009		
Severance charges	 	803		 	13,041		 	—		 	—		 	13,844		
Operating costs to metal inventory	 	(477	)	 	(80	)	 	—		 	—		 	(557	)	
Inventory net realizable value adjustment	 	1,524		 	—		 	—		 	—		 	1,524		
Royalties	 	2,889		 	4,232		 	—		 	—		 	7,121		
Cost of sales excluding depreciation and amortization	 	53,970		 	96,971		 	—		 	—		 	150,941		
Depreciation and amortization	 	6,741		 	18,019		 	—		 	—		 	24,760		
Mine operating loss	 	(2,984	)	 	(30,402	)	 	—		 	—		 	(33,386	)	
Impairment charges	 	—		 	34,396		 	—		 	—		 	34,396		
Net loss attributable to non-controlling interest	 	(1,285	)	 	(8,186	)	 	—		 	—		 	(9,471	)	
Net loss attributable to Golden Star	 	$	(7,201	)	 	$	(52,933	)	 	$	(446	)	 	$	(14,050	)	 	$	(74,630	)	
 	 	 	 	 	 	 	 	 	 	 	
Capital expenditures	 	$	17,405		 	$	8,131		 	$	—		 	$	—		 	$	25,536		
 	 	 	 	 	 	 	 	 	 	 	
2014	 	 	 	 	 	 	 	 	 	 	
Revenue	 	$	82,819		 	$	81,752		 	$	—		 	$	—		 	$	164,571		
Mine operating expenses	 	62,437		 	93,191		 	—		 	—		 	155,628		
Severance charges	 	999		 	276		 	—		 	—		 	1,275		
Operating costs to metal inventory	 	(1,695	)	 	(1,688	)	 	—		 	—		 	(3,383	)	
Inventory net realizable value adjustment	 	319		 	653		 	—		 	—		 	972		
Royalties	 	4,145		 	4,091		 	—		 	—		 	8,236		
Cost of sales excluding depreciation and amortization	 	66,205		 	96,523		 	—		 	—		 	162,728		
Depreciation and amortization	 	7,165		 	4,633		 	—		 	—		 	11,798		
Mine operating margin/(loss)	 	9,449		 	(19,404	)	 	—		 	—		 	(9,955	)	
Income tax expense	 	85		 	—		 	—		 	—		 	85		
Net loss attributable to non-controlling interest	 	(105	)	 	(3,439	)	 	—		 	—		 	(3,544	)	
Net income/(loss) attributable to Golden Star	 	$	2,589		 	$	(11,477	)	 	$	(243	)	 	$	(18,386	)	 	$	(27,517	)	
 	 	 	 	 	 	 	 	 	 	 	
Capital expenditures	 	$	6,714		 	$	11,770		 	$	—		 	$	—		 	$	18,484		

																					
	 	Wassa	 	Bogoso	 	Other	 	Corporate	 	Total	
June 30, 2015	 	 	 	 	 	 	 	 	 	 	
Total assets	 	$	138,021		 	$	59,089		 	$	545		 	$	1,662		 	$	199,317		
 	 	 	 	 	 	 	 	 	 	 	
December 31, 2014	 	 	 	 	 	 	 	 	 	 	
Total assets	 	$	130,010		 	$	115,497		 	$	834		 	$	11,712		 	$	258,053		
17 . SUPPLEMENTAL CASH FLOW INFORMATION
During the six months ended June 30, 2015 , there was no payment of income taxes ( six months ended June 30, 2014 - $6.2 million ). The Company paid $4.2 million for interest during the six months ended June 30, 2015 ( six months ended June 30, 2014 - $3.9 million ).

17

Changes in working capital for the six months ended June 30, 2015 and 2014 are as follows:

																	
 	 	Three Months Ended 
 June 30,	 	Six Months Ended 
 June 30,	
 	 	2015	 	2014	 	2015	 	2014	
Decrease/(increase) in accounts receivable	 	$	3,409		 	$	(1,406	)	 	$	4,624		 	$	(2,564	)	
Decrease in inventories	 	2,666		 	1,582		 	1,324		 	922		
Decrease/(increase) in prepaids and other	 	916		 	2,103		 	(361	)	 	2,713		
(Decrease)/increase in accounts payable and accrued liabilities	 	(985	)	 	7,474		 	6,678		 	14,071		
Decrease in current tax liability	 	—		 	(5,000	)	 	—		 	(6,170	)	
Total changes in working capital	 	$	6,006		 	$	4,753		 	$	12,265		 	$	8,972		
18 . IMPAIRMENT CHARGES
The following table shows the breakdown of the impairment charges recognized for Bogoso refractory assets:

																
 	Three Months Ended 
 June 30,	 	Six Months Ended 
 June 30,	
 	2015	 	2014	 	2015	 	2014	
Mining interests	8,734			—		 	8,734		 	—		
Materials and supplies inventories	12,887		 	—		 	12,887		 	—		
Refractory ore inventory	12,775		 	—		 	12,775		 	—		
 	$	34,396			$	—			$	34,396			$	—		
Mining Interests
The recoverable amounts of the Company's cash generating units ("CGUs") are determined where facts and circumstances provide indicators of impairment. The recoverable amounts of the CGUs are determined based on each CGU's future cash flows based on the latest feasibility studies and life-of-mine cash flow projections. The estimated cash flows incorporate management's best estimate of future metal prices, production based on current estimates of recoverable reserves and resources, exploration potential, future operating costs, future capital expenditures, and foreign exchange rates. The gold price assumption used is based on a short-term gold price of $1,150 per ounce. Projected cash flows are then discounted using a weighted average cost of capital which includes estimates for risk-free interest rates, market return on equity, share volatility, debt-to-equity ratios and risks specific to the CGUs. Management's estimates of the recoverable amounts are classified as Level 3 in the fair value hierarchy.
At June 30, 2015, the Company assessed and concluded that the forecasted mine operating loss for the Bogoso refractory operation prior to the planned suspension in the third quarter of 2015 is an indicator of potential impairment for the Bogoso refractory assets. As a result, the Company assessed the recoverable amounts of these Bogoso refractory assets.
An impairment charge of $8.7 million ($8.7 million, net of tax) was recorded against Bogoso's refractory assets at June 30, 2015. The impairment charge comprised of $4.2 million related to mine property and $4.5 million related to property, plant and equipment. These impairment charges represent the excess of carrying values over the total recoverable amount calculated on a value-in-use basis of the Bogoso refractory assets.
Sensitivities
The projected cash flows are significantly affected by changes in assumptions including future capital expenditures and production cost estimates.
For the impairment charge recorded at June 30, 2015, a 10% change to the gold price assumption would not have any impact to the impairment charge recognized on the Bogoso refractory assets.
Inventory write-off
As the Bogoso refractory operation is expected to be suspended in the third quarter of 2015, $12.9 million of materials and supplies inventories and $12.8 million of refractory ore inventory at the Bogoso refractory operation were written off based on a review of the inventory turnover and the expected inventory usage and recovery of ounces in ore prior to the suspension of the refractory operation.

18

19 . SUBSEQUENT EVENT
On July 28, 2015, the Company successfully closed the $150 million streaming and financing with Royal Gold, Inc. (“RGI”) and its wholly-owned subsidiary RGLD Gold AG (“RGLD”) that was previously announced on May 7, 2015. The $150 million transaction consists of a $130 million stream transaction with RGLD and a further $20 million term loan from RGI. Golden Star has received $20 million from RGI in a term loan and will receive the initial upfront payment of $40 million from RGLD in relation to the stream. The balance of the upfront payment of the stream transaction will be advanced on a pro-rata basis with spending on the Wassa and Prestea underground mines meeting certain requirements. The initial upfront payment was reduced from $55 million to $40 million in conjunction with the Company’s draw down of $15 million on its existing $25 million Ecobank loan II in advance of the conclusion of the financing. The full amount of the stream transaction remains $130 million and the effective date remains April 1, 2015. Golden Star is in the process of retiring $38 million on its Ecobank loan I, this being the full amount outstanding, with funds received from RGI and RGLD.
Under the Streaming Agreement, Golden Star will initially deliver 8.5% of Bogoso and Wassa ("the Mines") production to RGLD at a cash purchase price of 20% of spot gold until 185,000 ounces have been delivered. A further 5% of the Mines production at a cash purchase price of 20% of spot gold will be delivered thereafter until an additional 22,500 ounces have been delivered. Thereafter, 3% of the Mines production at a cash purchase price of 30% of spot gold will be delivered in perpetuity. The economic effective date of delivery is April 1, 2015. Delivery of the 8.5% of gold production from April 1, 2015 to the commencement of funding date are payable in three equal installments on the 30 th , 60 th and 90 th day after the commencement of funding.

19

Exhibit 99.3
FORM 52 - 109F2
CERTIFICATION OF INTERIM FILINGS
FULL CERTIFICATE

I, Samuel T. Coetzer, President and Chief Executive Officer of Golden Star Resources Ltd., certify the following:
1. Review: I have reviewed the interim financial report and interim MD&A (together, the “interim filings”) of Golden Star Resources Ltd. (the “issuer”) for the interim period ended June 30, 2015 .
2. No misrepresentations: Based on my knowledge, having exercised reasonable diligence, the interim filings do not contain any untrue statement of a material fact or omit to state a material fact required to be stated or that is necessary to make a statement not misleading in light of the circumstances under which it was made, with respect to the period covered by the interim filings.
3. Fair presentation: Based on my knowledge, having exercised reasonable diligence, the interim financial report together with the other financial information included in the interim filings fairly present in all material respects the financial condition, financial performance and cash flows of the issuer, as of the date of and for the periods presented in the interim filings.
4. Responsibility: The issuer’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (DC&P) and internal control over financial reporting (ICFR), as those terms are defined in National Instrument 52-109 Certification of Disclosure in Issuers’ Annual and Interim Filings , for the issuer.
5. Design: Subject to the limitations, if any, described in paragraphs 5.2 and 5.3, the issuer’s other certifying officer and I have, as at the end of the period covered by the interim filings
A. designed DC&P, or caused it to be designed under our supervision, to provide reasonable assurance that
I. material information relating to the issuer is made known to us by others, particularly during the period in which the interim filings are being prepared; and
II. information required to be disclosed by the issuer in its annual filings, interim filings or other reports filed or submitted by it under securities legislation is recorded, processed, summarized and reported within the time periods specified in securities legislation; and
B. designed ICFR, or caused it to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with the issuer’s GAAP.
5.1 Control framework: The control framework the issuer’s other certifying officer and I used to design the issuer’s ICFR is the Internal Control – Integrated Framework (COSO Framework) published by The Committee of Sponsoring Organizations of the Treadway Commission (2013).
5.2 ICFR - material weakness relating to design: N/A
5.3 Limitation on scope of design: N/A
6. Reporting changes in ICFR: The issuer has disclosed in its interim MD&A any change in the issuer’s ICFR that occurred during the period beginning on April 1, 2015 and ended on June 30, 2015 that has materially affected, or is reasonably likely to materially affect, the issuer’s ICFR.

Date: July 29, 2015
(signed) Samuel T. Coetzer
_______________________
Samuel T. Coetzer
President and Chief Executive Officer

Exhibit 99.4
FORM 52 - 109F2
CERTIFICATION OF INTERIM FILINGS
FULL CERTIFICATE

I, André van Niekerk, Executive Vice President and Chief Financial Officer of Golden Star Resources Ltd., certify the following:
1. Review: I have reviewed the interim financial report and interim MD&A (together, the “interim filings”) of Golden Star Resources Ltd. (the “issuer”) for the interim period ended June 30, 2015 .
2. No misrepresentations: Based on my knowledge, having exercised reasonable diligence, the interim filings do not contain any untrue statement of a material fact or omit to state a material fact required to be stated or that is necessary to make a statement not misleading in light of the circumstances under which it was made, with respect to the period covered by the interim filings.
3. Fair presentation: Based on my knowledge, having exercised reasonable diligence, the interim financial report together with the other financial information included in the interim filings fairly present in all material respects the financial condition, financial performance and cash flows of the issuer, as of the date of and for the periods presented in the interim filings.
4. Responsibility: The issuer’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (DC&P) and internal control over financial reporting (ICFR), as those terms are defined in National Instrument 52-109 Certification of Disclosure in Issuers’ Annual and Interim Filings , for the issuer.
5. Design: Subject to the limitations, if any, described in paragraphs 5.2 and 5.3, the issuer’s other certifying officer and I have, as at the end of the period covered by the interim filings
A. designed DC&P, or caused it to be designed under our supervision, to provide reasonable assurance that
I. material information relating to the issuer is made known to us by others, particularly during the period in which the interim filings are being prepared; and
II. information required to be disclosed by the issuer in its annual filings, interim filings or other reports filed or submitted by it under securities legislation is recorded, processed, summarized and reported within the time periods specified in securities legislation; and
B. designed ICFR, or caused it to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with the issuer’s GAAP.
5.1 Control framework: The control framework the issuer’s other certifying officer and I used to design the issuer’s ICFR is the Internal Control – Integrated Framework (COSO Framework) published by The Committee of Sponsoring Organizations of the Treadway Commission (2013).
5.2 ICFR - material weakness relating to design: N/A
5.3 Limitation on scope of design: N/A
6. Reporting changes in ICFR: The issuer has disclosed in its interim MD&A any change in the issuer’s ICFR that occurred during the period beginning on April 1, 2015 and ended on June 30, 2015 that has materially affected, or is reasonably likely to materially affect, the issuer’s ICFR.

Date: July 29, 2015
(signed) André van Niekerk
_______________________
André van Niekerk
Executive Vice President and Chief Financial Officer