The Supervisory Board is now composed of:
Stéphane Mayer, Chairman
Agnès Estramon, Member and Vice-Chair
NSE Participations represented by Antoine Lacoste
Agnès Estramon brings forty years of experience as a statutory auditor and chartered accountant. She has spent her entire career at KPMG, where she was hired in September 1983. She successively held the positions of Managing Director in Thiers from 1988 to 2003, SME Accounting Partner in Clermont-Ferrand from 2003 to 2006, Audit Partner in Clermont until the end of 2018, and finally KPMG Partner in Clermont, overseeing all of the firm’s activities. She signed NSE’s financial statements on behalf of KPMG during the six-year statutory audit mandate, which concluded on December 31, 2017.
Antoine LACOSTE joined NSE in 2006 as a Sales Engineer, following a technical background in electronics and computer science and an MBA in Strategic Management from IFAG Montluçon. He quickly advanced within the company, first taking on the commercial responsibility for the Abrest site, then becoming Sales Director of the Services Business Unit (BUS), where he contributed to the diversification of the offering—particularly into the aeronautics sector and, starting in 2015, into the land defense sector. In 2019, he was appointed Group Sales Director and played an active role in NSE’s international expansion by becoming a board member of NSE TLS in Montréal at the time of its founding. In February 2020, he was appointed VP of Sales and Marketing and joined the Executive Board. After leaving NSE in 2022 to pursue new professional opportunities, Antoine Lacoste continued to apply his expertise in negotiation, business development, and international sales management. On April 23, 2025, Antoine Lacoste joined the Supervisory Board of the NSE Group as the representative of NSE Participations, at the request of François Lacoste, who remains Chairman of NSE Participations, the majority shareholder of the NSE Group.
