Solid Power, Inc. — Director's Dealing 2025

May 22, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Solid Power, Inc. (SLDP)
CIK: 0001844862
Period of Report: 2025-05-21

Reporting Person: STEPHENS JOHN JOSEPH (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-05-21	Common Stock	A	118808	—	Acquired	276070	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	300005	Indirect

Footnotes

F1: 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 Solid Power, Inc. 2021 Equity Incentive Plan) through such vesting date.