Solid Power, Inc. reported a board change tied to its strategic relationship with BMW. On July 1, 2026, the company’s board of directors appointed Uwe Breitweg to serve as a Class III director. Breitweg was nominated by BMW Holding B.V. under BMW Holding’s director nomination rights in a Board Nomination and Support Agreement dated May 5, 2021, among Solid Power, BMW Holding and certain stockholders. He succeeds Rainer Feurer as BMW Holding’s nominee on the board, following Dr. Feurer’s previously reported retirement. Breitweg’s term runs until Solid Power’s 2027 annual meeting of stockholders and until his successor is duly elected and qualified. The filing emphasizes that Solid Power has commercial and related-party relationships with Bayerische Motoren Werke AG, BMW Holding and affiliates including BMW of North America, LLC. Because of those relationships, Solid Power’s board determined that Breitweg is not independent under Nasdaq rules. As a result, he is not expected to serve on any board committees. Breitweg also agreed to waive all compensation payable by Solid Power for his board service. The company entered into its standard indemnification agreement with him, consistent with arrangements previously filed by the company. Solid Power disclosed the action under Item 5.02, covering director appointments and related governance matters. It also furnished, under Item 7.01, a July 1, 2026 press release announcing the appointment. No stock purchase, sale, option grant, share award, vesting event or other securities transaction was reported in this filing.