X0407 4 2023-05-24 0 0001844862 Solid Power, Inc. SLDP 0001354116 Wright Mary Ann 250 STEPHENSON HIGHWAY TROY MI 48083 1 0 0 0 0 Common Stock 2023-05-24 4 A 0 59197 0 A 86424 D Represents restricted stock units, which upon vesting of the unit, represent the right to receive one share of the issuer's common stock. The restricted stock units vest upon the earlier of: (i) the first anniversary of the grant date or (ii) the day before the issuer's next annual meeting of stockholders following the grant date, in each case, subject to the reporting person continuing to be a service provider (as defined in the 2021 Solid Power, Inc. Equity Incentive Plan) through such vesting date. /s/ James Liebscher, attorney-in-fact on behalf of MaryAnn Wright 2023-05-25