Didier Lamouche rejoined the ACI Worldwide Board in 2025, having previously served from October 2022 to June 2023, and chairs the Compensation Committee while serving on the Corporate Governance Committee. He brings decades of global technology leadership, having served as President and CEO of Oberthur Technologies (later IDEMIA), COO of STMicroelectronics, CEO of ST-Ericsson, and Chairman and CEO of Bull Group. He also serves on the boards of Quadient, Adecco Group AG, and ASM International N.V.