Tom Mackay
Interim Chief Executive Officer

Tom Mackay is a Geologist/Petroleum Engineer with a successful career in petroleum operations, management and financing. With a BSc (Hons) in geology from Durham University, he began his career as a Petroleum Engineer with Shell and subsequently moved to Clyde Petroleum PLC where he became Manager, Existing Ventures until it was acquired by Gulf Canada in 1997. Since then he has been an active petroleum consultant on acquisition and new venture projects with a wide range of clients, including Petrofac and Enquest. For a period he served as CEO of a private E&P company, Oil Quest Holdings Limited and from 2002 to 2007 he held senior management positions at Stratic Energy Corporation. He is currently a Partner in Gemini Oil & Gas Advisors LLP which acts as technical and financial advisor to the Gemini Oil & Gas Funds, investing in global appraisal and development projects. He was appointed a non-executive director of Aminex in September 2014 and interim Chief Executive Officer in May 2019.


Aaron LeBlanc
Chief Operating Officer
Aaron LeBlanc is a Geoscientist with 15 years in oil and gas exploration, development and operations. He has worked in Western Canada, the Former Soviet Union, Europe, North Africa, East Africa, the Middle East and South-east Asia. His early career was spent with Devon Energy Corporation where he was an integral member of the Iron River oilfield development which saw production increase from 3,000 to 30,000 BBLS/d. Prior to joining Aminex he was Vice-President Exploration at Serinus Energy Inc and was a key member of the team that grew their Ukrainian gas production 10-fold through an aggressive drilling programme. As COO at Aminex he is responsible for operations in Tanzania and elsewhere when applicable.

Brian Cassidy
General Counsel and Company Secretary
Brian Cassidy is a Solicitor qualified in England and Scotland. He has over 20 years' experience in the oil and gas industry, during which time he was based in the UK, Azerbaijan, Singapore, Hong Kong, China and South Korea. Before moving in-house, he held senior roles with Ledingham Chalmers LLP, McGrigors LLP and Clifford Chance LLP. Prior to joining Aminex PLC, he was Head of Legal and Company Secretary at Bowleven plc.

John Arthur
Chief Financial Officer
John Arthur joined Aminex as Group Financial Controller in June 2018, and in November 2019 was promoted to the role of Chief Financial Officer. John is a qualified Chartered Certified Accountant with over 15 years’ experience working in the oil and gas sector in a number of jurisdictions including Africa, Russia and Europe. John has extensive experience in Africa, specifically sub-Saharan Africa through previous senior held financial roles with Seven Energy where he worked from 2010 to 2018. John holds a Bachelor’s degree in Economics and Accounting from the University of Plymouth.

Thierry Murcia
Tanzania Country Manager
Thierry Murcia is Aminex's Country Manager in Tanzania and has been based in Dar es Salaam since 2008. He has an MBA from the University of Western Australia and prior to joining Aminex worked for both Caltex and BP in Australia in a variety of management positions. As well as day to day operational management in-country, he is Aminex's first point of contact with the Tanzanian authorities. He also serves as Honorary Australian Consul in Tanzania and is one of the founders of the Australian Tanzania Society, an NGO registered in Dar es Salaam.

Aminex PLC is a public limited company incorporated in Ireland.

Registered number: 72399

Registered address: Paramount Court, Corrig Road, Sandyford Business Park, Dublin 18, D18 R9C7

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