Orano - Annual Activity Report 2025 277 GOVERNANCE OF THE COMPANY AND GENERAL INFORMATION 5 Administration and management of the Company MARIE-HÉLÈNE SARTORIUS INDEPENDENT DIRECTOR AGE: 69 NATIONALITY: French DATE OF ENTRY TO THE BOARD: 07/27/2017 DATE OF RATIFICATION OR APPOINTMENT AT THE GENERAL MEETING: 07/27/2017 DATE OF LAST REAPPOINTMENT: 04/25/2024 END DATE OF THE TERM OF OFFICE: 2028 GM YEARS PRESENT: 8.5 years ATTENDANCE RATE AT BOARD MEETINGS: 100% Born on January 23, 1957 in Lyon (France), a French national, Marie-Hélène SARTORIUS is a graduate of École polytechnique and École nationale des ponts et chaussées. She began her career at Banque Paribas, now BNP Paribas, where she held a number of positions in management control and corporate banking before being appointed Head of Specialized Financing for Europe (LBOs, project finance). In 1995, she joined the Markets Department of the Paribas Group in London as Head of Risk. In 1999, she launched a new credit derivatives trading business for the group. In 2001, Marie-Hélène SARTORIUS joined PricewaterhouseCoopers (PwC) as a Partner in charge of consulting services in France and provided advice to large international groups until 2016. She worked primarily with large, listed investment banks, and energy companies, where she specialized in risk management, performance optimization and major transformation programs. On an international level, Marie-Hélène SARTORIUS has been a member of PwC’s EMEA Financial Services Leadership Team and its Global Financial Services Advisory Leadership Team. Since 2016, her activities are dedicated to Corporate Governance and she sits on several Boards of Directors (particularly in the Banking/Insurance/Energy sectors). She has been a member of the Board of directors of the Company since July 27, 2017. OTHER OFFICES HELD ● Director of Bank of America Securities Europe SA (since 10/16/2020); ● Director of BNP Paribas Cardif SA (since 05/12/2016); ● Director of Milleis Banque SA (since 08/31/2017). OFFICES EXPIRED DURING THE PAST FIVE YEARS ● Director of Gemalto BV SA (expired 04/02/2021). JULIE SERRIER DIRECTOR SINCE JULY 31, 2025 AGE: 46 NATIONALITY: French DATE OF ENTRY TO THE BOARD: 07/31/2025 DATE OF RATIFICATION OR APPOINTMENT AT THE GENERAL MEETING: n/a DATE OF LAST REAPPOINTMENT: 04/30/2026 END DATE OF THE TERM OF OFFICE: 2028 GM YEARS PRESENT: 0.5 year ATTENDANCE RATE AT BOARD MEETINGS: 100% Born on March 9, 1979 in Bron (France), a French national, Julie SERRIER is an engineer and a graduate of the École Nationale Supérieure des Techniques Avancées ParisTech (2002). She spent her career at the French Defense Department (DGA) and since 2002 has held various positions in the field of nuclear deterrence. Assigned to Biscarrosse in the Missile Test DGA, she joined the program management team of the oceanic nuclear component in Paris in 2007. Until 2015, she successively held the positions of overall architect and project manager within the M51 strategic missile program directorate. In May 2017, Julie SERRIER was appointed Chief of Staff of the Delegate General for Armaments, after having been an advisor. In September 2018, she joined the Operations Department as Deputy Director of the Naval Armament Operations Management Unit and was promoted in February 2020 to Director of the overall Barracuda nuclear attack submarine program. Since November 2023, she has been Director of the nuclear activities and Deterrence Department at the DGA and the Deputy Deterrence Director. She is in charge of monitoring the CEA’s military activities and is the DGA representative on the Joint Armed Forces-CEA committee. She also represents the French Ministry of the Armed Forces on the ANDRA Board of directors. She was appointed Knight of the National Order of Merit in January 2008 and Knight of the National Order of the Legion of Honor in July 2022. She has been a member of the Board of directors of the Company since July 31, 2025. OTHER OFFICES HELD ● Director of ANDRA (since 04/18/2024). OFFICES EXPIRED DURING THE PAST FIVE YEARS ● None.
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