NYSE MKT: GSS

Price: 0.67 Volume: 1,415,400 Change: +0.00 % Change: +0% June 23, 2017

Gold

Price: 1,242.20 Volume: Change: -9.17 % Change: -0.73% June 26, 2017

Golden Star Announces Repayment of Remaining 5.0% Convertible Debentures

06.01.2017

TORONTO, June 1, 2017 /PRNewswire/ - Golden Star Resources Ltd. (NYSE MKT: GSS; TSX: GSC; GSE: GSR) ("Golden Star" or the "Corporation") announces that it has repaid the remaining $13.6 million principal amount of its 5.0% convertible senior unsecured debentures ("5.0% Convertible Debentures") due June 1, 2017, plus accrued interest, in cash.

André van Niekerk, Executive Vice President and Chief Financial Officer, commented:

"In 2016 Golden Star took a number of important steps towards strengthening our balance sheet. These included restructuring the 5.0% Convertible Debentures, in order to secure a robust financial future for our shareholders.  I am very pleased that we have repaid the balance of the 5.0% Convertible Debentures, as planned, as this will further simplify our balance sheet as we continue along our path to become a high grade, low cost gold producer."

All monetary amounts refer to United States dollars unless otherwise indicated.

Company Profile

Golden Star is an established gold mining company that owns and operates the Wassa and Prestea mines situated on the prolific Ashanti Gold Belt in Ghana, West Africa. Listed on the NYSE MKT, the TSX, and the GSE, Golden Star is strategically focused on increasing operating margins and cash flow through the development of its two high grade, low cost underground mines both in conjunction with existing open pit operations. The Wassa Underground Gold Mine commenced commercial production in January 2017 and the Prestea Underground Gold Mine is expected to achieve commercial production in the third quarter of 2017. Gold production in 2017 is expected to be 255,000-280,000 ounces with cash operating costs of $780-860 per ounce.

Cautionary note regarding forward-looking information

Some statements contained in this news release are "forward looking information" within the meaning of Canadian securities laws and "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Generally, forward-looking statements and information can be identified by the use of forward-looking terminology 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 statements and information include, but are not limited to, statements and information regarding: the impact of the repayment of the 5.0% Convertible Debentures on Golden Star's balance sheet; the timing of the commencement of commercial production at the Prestea Underground Gold Mine; 2017 production guidance; and the ability to transition into a high grade, low cost producer.

Investors are cautioned that forward-looking statements are inherently uncertain and involve risks, assumptions and uncertainties that could cause actual facts to differ materially. There can be no assurance that future developments affecting the Corporation will be those anticipated by management. Please refer to the discussion of these and other factors in the Corporation's annual information form for the year ended December 31, 2016 which is filed under the Corporation's profile on SEDAR at www.sedar.com. 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. 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.

SOURCE Golden Star Resources Ltd.

please visit www.gsr.com or contact: Katharine Sutton, Vice President, Investor Relations and Corporate Affairs, 1 416 583 3800, investor@gsr.com

Please note that you are now entering a website directly or indirectly maintained by a third party (the "External Site") and that you do so at your own risk.

Neither Golden Star Resources Ltd. nor its affiliates, subsidiaries, officers, directors or agents (collectively, “Golden Star” or the “Company”) have any control over (a) the External Site or any linked websites accessible through any External Site, or (b) any data or other content contained, or accessible, therein or in or through any such linked websites. The link to the External Site is provided for convenience purposes only. The information and other content on the External Site is not meant to modify, qualify, supplement or amend information disclosed by or on behalf of the Company under corporate, securities or other legislation in any jurisdiction, and should not be used to make investment decisions involving the Company’s securities.

By clicking “Accept” below you acknowledge and agree that neither Golden Star nor the third party provider of the External Site, Virtua Research, Inc. (“Virtua”), is responsible, or accepts or assumes any responsibility or liability whatsoever for, the content, the data contained in or accessible on or through, or the technical operation of the External Site. Golden Star and Virtua are not liable to you for, and take no responsibility for, third party pricing data provided for informational purposes and certain ratio results formulated from the provided third party pricing data. Further, by entering the External Site, you also acknowledge and agree that you completely and irrevocably forever waive, and release Golden Star from, any and all rights and claims against Golden Star and Virtua and further acknowledge and agree that in no event shall Golden Star or Virtua, its officers, employees, directors and agents be liable for any (i) direct or indirect, consequential, incidental, special, compensatory, punitive or other damages, (ii) damages for loss of income, loss of business profits, business interruption, loss of data or business information, loss of or damage to property, (iii) claims of third parties, or (iv) other pecuniary loss, arising out of or related to this disclaimer or the External Site or any linked websites.

By entering the External Site, you further acknowledge and agree that the disclaimer of warranties and limitations of liability set out in this disclaimer shall apply regardless of the causes, circumstances or form of action giving rise to the loss, damage, claim or liability, even if such loss, damage, claim or liability is based upon breach of contract (including, without limitation, a claim of fundamental breach or breach of a fundamental term), tort (including, without limitation, negligence), strict liability or any other legal or equitable theory, and even if Golden Star and Virtua are advised of the possibility of the loss, damage, claim or liability. The waiver and release specifically includes, without limitation, any and all rights and claims pertaining to the processing of personal data, including but not limited to any rights under any applicable data protection statute(s).

If in any jurisdiction, any part of this disclaimer is determined to be unenforceable by a court of competent jurisdiction, such part of this disclaimer shall be restricted or eliminated to the minimum extent necessary to comply with such determination and the remaining disclaimer shall otherwise remain in full force and effect.

Please note the information presented is given as at the date and the time of its original release. Changes in such historical information may occur due to adjustments in accounting and reporting standards & procedures.

Non-GAAP Information

Golden Star also uses certain non-International Financial Reporting Standards (“IFRS”) financial measures as defined in applicable Canadian and United States securities laws ("non-GAAP measures"), including the terms “cash operating cost per ounce”, “all-in sustaining costs”, “cash generated from 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”. Golden Star 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. In addition, changes in numerous factors including, but not limited to, Golden Star’s 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.

Golden Star believes these measures are useful non-GAAP operating measures and supplement the IFRS disclosures made by the Company. These non-GAAP measures are not representative of all of Golden Star's cash expenditures and there are material limitations associated with the use of such non-GAAP measures. Since these non-GAAP 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.

The non-GAAP information is not prepared in accordance with IFRS and may not be comparable to non-GAAP information used by other companies. The non-GAAP information should not be viewed in isolation or as a substitute for, or superior to, other data prepared in accordance with IFRS. For an explanation of the Non-GAAP financial measures used by the Company, please refer to the heading “Non-GAAP Financial Measures” in the Company’s Management Discussion and Analysis of Financial Condition and Results of Operations for the Three Months ended March 31, 2014 and the Company’s Management Discussion and Analysis of Financial Condition and Results of Operations for the Year Ended December 31, 2013, available at www.sedar.com.