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Amendment No. 2 to a Schedule 13D for Solid Power, Inc. (Common Stock) reports changes in beneficial ownership by reporting persons David M. Leuschen and Pierre F. Lapeyre, Jr. as of September 23, 2025. The filing states that on September 19, 2025, REL and REL US sold a combined 7,235,803 shares in the open market at $3.58 per share. REL originally received 4,798,303 shares in the business combination and purchased 2,000,000 shares at $10.00 per share in a PIPE. As of the filing, Mr. Leuschen beneficially owns 6,704,303 shares (3.62%) and Mr. Lapeyre beneficially owns 9,010,694 shares (4.81%). The filing notes that on September 19, 2025, both reporting persons ceased to beneficially own more than 5% of the Common Stock.