Katherine Williams was designated executive director and Chief Financial Officer, effective immediately on March 29, 2026. Williams resigned her roles as non-executive director and chairperson, and stepped down from the Audit and Nominating & Corporate Governance Committees. Michael Howard was appointed chairperson of the Board; Peter Hastings joined the Audit Committee, both on March 29, 2026. Former CFO and executive director Guillaume Moyen resigned from all positions effective immediately on March 28, 2026. Williams, age 68, has served as a director since October 2025; she has been CFO of Solestiss LLC since April 2025 and previously served as CEO and CFO of Framatome Inc. (Feb 2002–May 2024). A services agreement dated December 10, 2025 for Williams’ prior non-executive role will be amended to reflect her executive director and CFO responsibilities. Company states there are no family relationships or related party transactions involving Williams that require disclosure under Item 404(a) of Regulation S-K.