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Conference Call

The Company will host a conference call, which will be webcast, to discuss these results at 10:00 am Eastern Time today, Monday 4 November 2013.

The call can be accessed by telephone or by webcast as follows:
Participants (toll free): +1 877-407-8289
Participants (international): +1 201-689-8341
Webcast: www.gsr.com

Review of Financial Performance

Gold sales for the third quarter increased 3,835 ounces from the previous quarter to 88,925 ounces. However revenue decreased marginally quarter on quarter to $118.2 million due to lower realized gold prices. Realized gold prices reduced 6.3% quarter on quarter to $1,329 per ounce, consistent with average spot gold prices over the quarter.

Consolidated cash operating costs for the third quarter reduced 11% to $960 per ounce from $1,078 per ounce in the second quarter this year. Third quarter cash operating costs at Wassa were $805 per ounce, up from $736 per ounce in the second quarter of 2013, due primarily to a 12% reduction in grade processed. Bogoso's cash operating costs for the third quarter declined 29% to $1,118 per ounce from $1,584 in the second quarter 2013. This decline is attributable to:

• A 22% increase in average grade of ore processed in the refractory plant;

• Low cost mining from the tailings facility to the Bogoso non-refractory plant, as the tailings retreatment project formally commenced; and

• General cost savings from re-negotiation of supplier contracts, securing of supplier discounts and the reduction in the number of contractors.

Consolidated all-in sustaining costs were $1,213 per ounce for the third quarter, a decrease of 12% from the second quarter of 2013's all-in sustaining costs of $1,378.

In June 2013 the Company began implementing operating cost reduction initiatives estimated to save the Company approximately $45 million over the remainder of the year. These savings represented approximately 10% of anticipated annual operating expenses. As at September 30, 2013, approximately half of these savings have been realized, mostly as a result of operating cost reductions at Bogoso.

As at September 30, 2013, the Company held $66.6 million in cash and cash equivalents, up from $52.7 million on June 30 2013. Operations provided $20.1 million of cash over the third quarter. Wassa incurred taxable income in 2013 and paid $4.7 million of taxes during the third quarter. Wassa is expected to generate taxable income for 2013, and additional tax payments are expected to be made in the fourth quarter of 2013.

Before working capital changes, operations provided $12.8 million of operating cash flow over the period, up from the $0.3 million provided in the previous quarter. Although accounts payable decreased over the period, accounts receivable and inventory decreased by a greater amount, releasing a net $7.3 million from working capital.

Investments in betterment stripping and the acquisition of new equipment and facilities for the mine sites of $23.5 million, combined with a reduction in accounts payable for capital equipment of $2.8 million, totaled $26.3 million for the third quarter. In July 2013, the Company sold its holding in True Gold Mining Inc. for net proceeds of $7.2 million.

Financing activities provided $12.8 million during the third quarter, primarily reflecting the $10 million draw down on the Ecobank Loan. This leaves $40 million undrawn on this $50 million facility. Funds available to the Company, from cash on hand and this finance arrangement, is $106 million.

Total forecast capital expenditures for 2013 (before betterment stripping) were reduced to $73 million (excluding $23.6 million of betterment stripping previously expensed under US GAAP) from an initial budget of $141 million. Of this total expenditure for 2013, sustaining capital expenditure is expected to be $36.1 million and development capital is expected to be $37.1 million (excluding betterment stripping).

The Wassa gold mine is located in the southwestern region of Ghana. It has a single non-refractory processing plant consisting of a traditional Carbon-In-Leach system with a capacity of 2.7 million tonnes per annum ("mtpa"). There are currently two operational pits at Wassa -- the Wassa Main pit and the Father Brown pit.

Wassa ore supply has stabilized from the Wassa Main pit based on a new mine plan that optimized the pit shells based on a gold price of $1,100 per ounce. Ore mined over the period increased 25% from the second quarter to 539,661 tonnes as mining in the Wassa Main pit moved into a shallower area with oxide ore.

Grade at the Wassa Main pit increased with the revised mine plan, however the grade processed from the Father Brown pit declined quarter to quarter as planned. The net result was a decline in overall grade processed at Wassa from 2.55 grams per tonne of gold ("g/t Au") in the second quarter 2013 to 2.24 g/t Au in the third quarter.

The Wassa plant processed 675,480 tonnes of ore in the third quarter of 2013 versus 651,453 tonnes of ore in the second quarter of 2013. As a result of recent improvements in operational and maintenance protocols the plant is performing to expectation. Despite this increase in tonnes processed, gold production decreased as the average grade processed declined. Accordingly gold sales reduced to 44,830 ounces for the third quarter from 50,774 ounces in the second quarter of 2013.

Wassa's third quarter 2013 revenues of $59.5 million were down 18% from the second quarter of 2013 due to fewer ounces being sold at a lower average realized gold price.

Cost of sales (excluding depreciation and amortization) at Wassa totaled $39.1 million in the third quarter, 5% lower than the $41.2 million incurred in the second quarter of 2013. Mine operating expenses (including the costs from drawn down inventory) were lower even as tonnes mined and processed increased quarter on quarter 24% and 4% respectively. This demonstrates the effectiveness of various cost savings initiatives at Wassa including operating improvements, transport and delivery efficiencies, improved purchasing procedures and better operational and maintenance management. Lower gold production and sales resulted in cash operating costs per ounce increasing 9% from the second quarter of 2013 to $805.

As a result of the impairment charges recorded in the second quarter of 2013, the net book value of Wassa's mining property, plant and equipment decreased. Accordingly, depreciation and amortization decreased to $5.9 million for the quarter ended September 30, 2013, down from $17.4 million in the second quarter 2013.

In the fourth quarter the Company plans to commence push backs at the Father Brown pit to expose deeper ore horizons and extend the life of these pits.

The Bogoso gold mine is located in the southwestern region of Ghana approximately 35 kilometers from Wassa. It has both a refractory and a non-refractory plant with a capacity of 2.7 mtpa and 1.5 mtpa respectively. There are currently two operational pits at Bogoso -- the Bogoso North pit and the Chujah pit.

In the third quarter of 2013, mining of the reclaimed tailings in Bogoso's non-refractory plant commenced with 0.4 million tonnes of tailings at an average grade of 0.96 g/t Au being processed. The gold recovery rate was 42.5% and 4,434 ounces were produced. All ore treated in this plant during the third quarter was sourced from reclaimed tailings. Although future gold grades and gold recovery rates from tailings retreatment may vary, expectations are that over the longer term they will be similar to those achieved to date. The positive results from the tailings retreatment program exceeded management's initial expectations and are a contributor to the anticipated strong full year production results. Tailings retreatment is expected to continue at current levels for about five years.

During the third quarter of 2013, push backs of the Chujah and Bogoso North pit walls continued to improve access to ore. This is expected to reduce mining operating expenses over the life of mine. The Company expects that the push back will be completed during the second quarter of 2014. $23.6 million in betterment stripping has been capitalized year to date.

Refractory ore mined during the third quarter doubled from the second quarter of 2013 to 532,603 tonnes. In the second quarter, pit wall push backs were ongoing and accordingly 59% of ore processed was from stockpiles. Total material mined quarter on quarter declined from 6.2 million tonnes to 5.6 million tonnes and the strip ratio declined from 16:1 to 9:1.

Refractory ore processed in the third quarter declined marginally to 619,705 tonnes with the refractory plant running at 92% of its rated capacity. Refractory gold production increased 33% to 39,661 ounces from the previous quarter as grade increased 22% and recoveries improved. Grade improved as the push backs allowed better access to ore. Bogoso North and Chujah pits are expected to provide the primary source of refractory ore at Bogoso for the next two years.

Accordingly total gold sales for the third quarter at Bogoso were 44,095 ounces, an increase of 28% on the second quarter. Revenues increased $10.1 million from the previous quarter to $58.7 million due to more ounces being sold which more than offset the decrease in the realized gold price.

Bogoso's mine operating expenses were reduced through re-negotiations of certain supplier contracts, supplier discounts and a reduction in the number of contractors. Improved water management in both the refractory and non-refractory plants has further reduced costs. Maintenance cost savings and fuel cost reductions continue to be achieved through the recent purchase of two new excavators and four new drills. As at Wassa, transport and delivery efficiencies have been implemented and purchasing procedures improved. Ongoing cost reduction initiatives include a review of all pending contracts and service providers as well as risk assessments related to cost savings in metallurgy, plant maintenance and mining and mine maintenance.

Bogoso's cost of sales excluding depreciation and amortization decreased by $7.7 million from the previous quarter to $52.2 million for the third quarter of 2013. Cash operating costs for the third quarter totaled $49.3 million, down $5.0 million or 9% from the previous quarter. This reduction in costs combined with the increase in gold production resulted in a 29% reduction in cash operating costs per ounce at Bogoso.

Impairment charges recorded in the second quarter of 2013 reduced the net book value of Bogoso's mining property, plant and equipment and accordingly, depreciation and amortization decreased in the period to $3.9 million relative to $6.7 million in the preceding quarter.

Review of Development Projects

Wassa Mine
During the nine months ended September 30, 2013, 140 drill holes totaling 48,406 meters were completed below the Wassa Main pit. The drilling during the last nine months was predominantly targeted at infilling gaps in the prior drilling as well as testing the higher grade plunge mineralization to the south. Drilling results to date in 2013 have confirmed that the mineralized zone continues to the south and remains open at depth.

A revised Mineral Resource for Wassa is largely complete and pit modeling is currently ongoing. Initial indications are that the deeper portion of the deposit exhibits grades and thickness amenable to underground mining.

A production schedule to determine how best to mine this resource to maximize free cash flow is currently being compiled. We expect to issue an updated Mineral Resource estimate shortly.

Prestea South
Prestea South represents several satellite deposits approximately 20 kilometers from the Bogoso processing plants. As of December 31, 2012, the Prestea South had total Proven and Probable Mineral Reserves of 4.6 million tonnes grading 2.47 g/t Au containing approximately 0.36 million ounces.

A public hearing with the Prestea South stakeholders was held during the third quarter of 2013. The community is supportive of the development of open pit mines at Prestea South. The Company is waiting for comments from the Ghana Environmental Protection Agency ("EPA") on the draft environmental impact statement ("EIS"). The EIS will then be finalized and submitted for approval by the EPA. No development expenditures on this project were capitalized in the third quarter of 2013.

Upon completion of the environmental permitting, the Company plans to initiate development of the Prestea South deposits, including the construction of an access road extension and the development of a series of surface pits. Ore from these pits will be hauled to the Bogoso processing plants.

Dumasi
Dumasi is a large undeveloped ore body located approximately 4 kilometers north of the Bogoso processing plants. As at December 31, 2012 Dumasi had a Proven and Probable Mineral Reserves of 15.3 million tonnes grading 2.19 g/t Au for 1.08 million ounces of in-situ gold and 0.8 million ounces of recoverable gold.

A community of some 2,500 people live in the town of Dumasi, with whom a resettlement agreement was signed in February this year in anticipation of the construction of an open pit mine at Dumasi. It is expected that ore from the Dumasi pit will be treated at the Bogoso processing plants. During the third quarter, approximately $0.7 million of development costs were incurred and capitalized consisting of work on the EIS and further site preparation for the new Dumasi village. The resettlement action plan ("RAP") for Dumasi is expected to be submitted to the district assembly in the fourth quarter 2013 for their review and approval. A further $1 million is budgeted for capital expenditure in the remainder of the year.

Mampon
The Mampon deposit is located approximately 35 kilometers north east of the Bogoso processing plants and contains 1.6 million tonnes of Proven and Probable Mineral Reserves at an average gold grade of 4.56 g/t Au or 0.23 million ounces of gold. Intentions are to develop and open pit mine at Mampon and haul ore to the Bogoso processing plants. The initial ore will be non-refractory but as mining proceeds deeper into the pit, refractory ore will be mined as well.

The permitting process is underway and continued in the third quarter of 2013 with the completion of the data collection for the draft RAP for the community living at Mampon. The RAP and the EIS are currently being drafted.

Construction of the access road to Mampon has not yet commenced as this is pending environmental permitting. Design work in this regard is ongoing. The EIS is currently undergoing internal review and the submission of the draft EIS to the EPA is expected before the end of the first quarter 2014.

Prestea Underground
A feasibility study for Prestea Underground was completed during the second quarter of 2013 and was published on SEDAR in July 2013. The feasibility study demonstrates positive economics for the extraction of a steeply dipping, high-grade, narrow vein deposit using mechanized cut-and-fill mining with footwall ramp access.

The feasibility study indicates that after the three year development period, ore from the Prestea Underground would be treated at the Bogoso non-refractory plant. Estimated cash operating costs are $734 per ounce over the six year life of mine. Initial capital expenditure is estimated to be $90.6 million and total capital expenditure over the life of the project is expected to be $150.1 million.

Subsequent to the completion of the feasibility study drilling at Prestea Underground was suspended. A total of $0.9 million was spent on geotechnical drilling and drilling development costs in the first half of the year. A further $4 million of development costs have been spent at Prestea Underground in 2013, of which $3.5 million was spent in the third quarter.

A resettlement action plan for the Prestea communities is currently under review by the relevant district assembly. The environmental impact assessment work is ongoing; on completion of the EIA, the draft EIS will be submitted to the EPA for review and comment.

Outlook

The Company's long term objective is to continue the growth of its mining business through the appropriate development of its numerous existing projects. In the near term the Company is focused on reducing its operating costs and managing its capital expenditure appropriately.

Year to date the Company has produced 255,377 ounces of gold, mainly because of the good performance from Wassa in the second quarter and the better than expected results achieved from tailings reclaim in the third quarter. The Company now expects to exceed its revised production guidance for the full year. Accordingly gold production guidance for the full year is being increased to 325,000 - 330,000 ounces.

Production for the remainder of 2013 and for the next two years thereafter is expected to be from the Wassa Main, Father Brown, Chujah and Bogoso North pits as well as from tailings reprocessing at Bogoso.

The Company's objectives for the remainder of 2013 include:

• Achieving further reductions in operating costs throughout the Company;

• Continuing operations at the tailings reclaim facility;

• Progressing permitting at Prestea South, Dumasi and Mampon all of which are future ore sources available to the Company;

• Commencing push back of the Father Brown pit;

• Continuing push backs at Bogoso North and Chujah pits; and

• Commencing infill drilling at depth at the Wassa Main pit.

As of September 30, 2013, the Company had $66.6 million in cash and $40.0 million available on its financing agreement. Operations and capital projects are expected to be funded through operating cash flow, the equipment financing facility, the Ecobank Loan and cash on hand.

The Company plans to announce its full year 2013 gold production and sales in early January 2014 and financial results for same period in late February 2014.

Company Profile

Golden Star is an established gold mining company that holds a 90% interest in both the Bogoso and Wassa open-pit gold mines in Ghana. Golden Star also has a 90% interest in the Prestea Underground mine in Ghana, which is currently undergoing permitting subsequent to a successful feasibility study being completed in June 2013. In 2012, Golden Star produced 336,000 ounces of gold and the Company expects to produce 325,000 to 330,000 ounces of gold in 2013. For further information on the Company, please visit www.gsr.com.

For further information, please contact:

GOLDEN STAR RESOURCES
Jeff Swinoga, Executive Vice President, Chief Financial Officer
416-583-3803

Angela Parr, Director, Investor Relations
416-583-3815

THE CAPITAL LAB, INC.
Belinda Labatte
647-427-0208

Greg DiTomaso
647-427-0208

investor@gsr.com

Statements Regarding Forward-Looking Information:

Some statements contained in this news release are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 and applicable Canadian securities laws. Investors are cautioned that forward-looking statements are inherently uncertain and involve risks and uncertainties that could cause actual results to differ materially. Factors that could cause actual results to differ materially include timing of and unexpected events at the Bogoso refractory and non-refractory processing plants or at the Wassa processing plant; variations in ore grade, tonnes mined, crushed or milled; variations in relative amounts of refractory, non-refractory and transition ores; delay or failure to receive board or government approvals and permits; the availability and cost of electrical power; timing and availability of external financing on acceptable terms; technical, permitting, mining or processing issues; changes in U.S. and Canadian securities markets; and fluctuations in gold price and input costs and general economic conditions. There can be no assurance that future developments affecting the Company will be those anticipated by management. Please refer to the discussion of these and other factors in our Annual Report or Form 10-K for 2012. The forecasts contained in this press release constitute management's current estimates, as of the date of this press release, with respect to the matters covered thereby. We expect that these estimates will change as new information is received and that actual results will vary from these estimates, possibly by material amounts. While we may elect to update these estimates at any time, we do not undertake to update any estimate at any particular time or in response to any particular event. Investors and others should not assume that any forecasts in this press release represent management's estimate as of any date other than the date of this press release.

Non-GAAP Financial Measures:

In this news release, we use the terms "cash operating cost per ounce", "all-in sustaining cost per ounce" and "all-in costs". These measures should be considered as Non-GAAP Financial Measures as defined in applicable securities laws and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with International Financial Reporting Standards ("IFRS"). We use cash operating cost per ounce as a key operating indicator. We monitor this measure monthly, comparing each month's values to prior period's values to detect trends that may indicate increases or decreases in operating efficiencies. This measure is also compared against budget to alert management to trends that may cause actual results to deviate from planned operational results. We provide this measure to our investors to allow them to also monitor operational efficiencies of our mines. We calculate this measure for both individual operating units and on a consolidated basis. We believe that "all-in sustaining costs" and "all-in 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 our operating performance and also our ability to generate free cash flow from current operations and to generate free cash flow on an overall Company basis. There are material limitations associated with the use of such non-GAAP measures. Since these measures do not incorporate revenue, 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, gold grade, gold recovery, and the 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 the same or similar to the measures of other gold mining companies, but may not be comparable to similarly titled measures in every instance. See "Non GAAP Financial Measures" in the Company's 2013 Q3 Management Discussion and Analysis for a reconciliation of cash operating cost per ounce, all-in sustaining costs per ounce and all-in costs per ounce to cost of sales excluding depreciation and amortization.

Technical Information:

The technical contents of this press release have been reviewed and approved by Dr. Martin Raffield and Mr. S. Mitchel Wasel, both of whom are Qualified Persons pursuant to National Instrument 43-101. Dr. Raffield is Senior Vice President Technical Services for the Company and a Professional Engineer registered in Ontario, Canada. Mr. Wasel is Vice President Exploration for the Company and a member and chartered professional with AUSIMM. Additional information on Mineral Reserve estimates are available under the Company's profile at www.sedar.com in the following documents: (i) "NI 43-101 Technical Report on Mineral Resources and Mineral Reserves Golden Star Resources Ltd, Wassa Gold Mine, Ghana, effective Date December 31, 2012", prepared by SRK Consulting (UK) Limited; (ii) "NI 43-101 Preliminary Economic Assessment, Mechanized Mining of the West Reef Resource, Prestea Underground Mine, Prestea, Ghana", dated May 3, 2012 prepared by SRK Consulting (UK) Limited; and (iii) Golden Star's Annual Report on Form 10-K for 2012.