Afentra plc announced the appointment of Andrew Jon Osborne as Independent Non-Executive Director and Chair of the Audit Committee, with effect from 10 November 2025. On his appointment Andrew Osborne will also become a member of the Company's Nominations Committee and Remuneration Committee. Thierry Tanoh, Chairman of the Board, will step down from his interim Audit Committee Chair responsibilities upon Andrew's appointment.

Andrew Osborne brings more than 30 years' board-level and senior leadership experience across oil & gas, capital markets and M&A. He was most recently EVP, Special Projects at Harbour Energy plc (2021-2024) and previously Chief Financial Officer at Chrysaor (2012-2021), where he led major financings and acquisitions, including transactions with Shell and ConocoPhillips, and was part of the executive team during the merger that created Harbour Energy. Earlier in his career he was a Managing Director at Merrill Lynch. Following the appointment of Andrew Osborne as Independent Non-Executive Director of Afentra, the Board and Board Committee Chairs will be as follows: Chairman: Thierry Tanoh (Nominations Committee Chair).

Executive Directors: Paul McDade (Chief Executive Officer), Anastasia Deulina (Chief Financial Officer), Ian Cloke (Chief Operating Officer). Independent Non-Executive Directors: Gavin Wilson (Remuneration Committee Chair); Andrew Osborne (Audit Committee Chair). Andrew Jon Osborne Date of Birth: November, 1969.

Occupation: Director . Nationality: British. In accordance with AIM Rule 17 and Schedule Two (g) of the AIM Rules for Companies, the following information is disclosed regarding Andrew Jon Osborne, aged 55: Current directorships/partnerships: Acorn Investment Management and Kalahari Copper Limited (BVI) and Directorships/partnerships held within the last five years: Chrysaor Resources Irish Sea) Limited, Chrysaor Developments Limited, Chrysaor North Sea Limited, Chrysaor Production Holdings Limited, Chrysaor (U.K.) Sigma Limited, Chrysaor Supply & Trading Limited, Chrysaor (U.K.) Zeta Limited, Harbour Energy Services Limited, Chrysaor (U.K.) Theta Limited, Chrysaor E&P Limited, Chrysaor Production (U.K.) Limited, Chrysaor (U.K.) Beta Limited, Chrysaor Investments Limited, Chrysaor Production Limited, Chrysaor Petroleum Chemicals U.K. Limited, Harbour Energy Marketing Limited, Chrysaor (U.K.) Alpha Limited, Chrysaor Holdings Limited, Chrysaor Petroleum Company U.K. Limited, Chrysaor (U.K.) Britannia Limited, Chrysaor (U.K.) Eta Limited, Chrysaor Production Oil (GB) Limited, Viking CCS Limited, Harbour Energy Developments Limited, Chrysaor CNS Limited, Chrysaor Limited, Chrysaor Petroleum Limited, Chrysaor (U.K.) Lambda Limited, Chrysaor (U.K.) Delta Limited, Chrysaor Resources (U.K.) Holdings Limited,Harbour Energy Finance Limited and Harbour Energy Norge AS.