Management Team

Andrew Wray
, President and Chief Executive Officer

Mr. Wray was appointed President and Chief Executive Officer of the Company, effective May 1, 2019 and a Director of the Company October 2, 2018. Previously, Mr. Wray was the Chief Executive Officer of the La Mancha Group, one of the largest direct investors in the gold mining sector. Prior to that, he was Chief Financial Officer of Acacia Mining Plc, a UK listed company and one of the largest African gold producers. He also has significant experience advising companies in capital-raising activities and other strategic objectives in a range of sectors, including mining, from his time in the Corporate Finance team at JP Morgan Cazenove. He is a fluent Spanish speaker and spent several years at the Kuwait Investment Office in London dealing with its portfolio of investments in Spain. He holds an Honours Degree from University College London as well as postgraduate studies in Finance and Investment from South Bank University Business School.

Graham Crew
, Chief Operating Officer

Mr. Crew was appointed Chief Operating Officer of the Company effective July, 2019, transitioning from his position as a member of Golden Star’s Board of Directors. Mr. Crew has over 25 years of operational, technical and corporate experience in the mining industry. He has held senior positions with Barminco Limited, a global underground mining services provider, Acacia Mining in Tanzania and prior to this was Operations Manager for La Mancha’s Australian operations for five years. He has a strong track record of transforming operations through development of vision and strategy and disciplined implementation. In addition to operations he has experience of construction projects, corporate and operational due diligence, project evaluation and project financing. Mr. Crew holds a Bachelor’s degree in Mining Engineering from West Australian School of Mines and is a Fellow of the AusIMM.

Paul Thomson
, Chief Financial Officer

Paul Thomson joined Golden Star in February 2020. Mr. Thomson has over 25 years of finance and capital markets experience, predominantly in the mining industry. He has held a number of finance, corporate finance and business development roles at mining companies including Aureus Mining, Berkeley Energia and Kazakhmys. At Aureus and Berkeley Energia he held the position of Chief Financial Officer. He is a chartered accountant and started his career at Ernst & Young.

Nathalie Lion Haddad
, Executive Vice President, Head of People

Ms Lion Haddad is an HR executive with over 20 years’ experience leading organizations across industries and around the world. Prior to joining Golden Star Resources in September 2019, Ms Lion Haddad held an executive position with Sherritt International Corporation and led the implementation of an organizational effectiveness review that involved organization and business process redesign. Previously, she worked in Sherritt’s key operation in Madagascar as Director, Human Resources and had oversight of a diverse workforce of 3,000-personnel. Between 2006 and 2012, she was Director, Human Resources for LG Electronics’ sales and marketing operations in France. She worked as the in-country HR leader for BHP Billiton in their Algerian gas operation between 2004 and 2006, and held Talent Development Specialist positions in Dubai, Gabon, and London between 1992 and 2003. She studied English Language and Business at the Sorbonne University in Paris, France.

Philipa Varris
, Executive Vice President & Head of Sustainability

Philipa Varris is Executive Vice President, Head of Sustainability with Golden Star Resources. Philipa joined the company in February 2011 and has held leadership positions in environment, health, safety and community management in the mining sector for over 25 years, primarily in Africa and Australasia. Philipa has been awarded the Australian Centenary Medal for leadership in Australia’s largest community consultation and strategic vision development initiative and was recognised in 2020 as one of the WIM UK 100 Global Inspirational Women in Mining. Philipa holds an MSc in Natural Resources, is a Chartered Environmental Professional with the AusIMM and is a qualified Board candidate with Corporate Directors International.

Ben Pullinger
, Executive Vice President, Discovery

Ben Pullinger joined Golden Star in November 2021. Ben has over 15 years of experience in the gold sector, working across Africa, the Americas and Asia. He has been directly associated with a number of high-quality discoveries and has contributed to their advancement throughout his career. He joins the Company from the role of Senior Vice President, Geology & Corporate Development at Excellon Resources. Prior to that, he held the position of Vice President, Exploration at Roxgold.

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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

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