Erik J. Anderson - 21 May 2025 Form 4 Insider Report for Solid Power, Inc. (SLDP)

Role: Director
Signature: /s/ Erik J. Anderson
Issuer symbol: SLDP
Transactions as of: 21 May 2025
Net transactions value: $0
Form type: 4
Filing time: 22 May 2025, 18:15:21 UTC
Previous filing: 13 Nov 2024
Next filing: 30 May 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
ANDERSON ERIK J	Director	C/O SOLID POWER, INC., 486 S. PIERCE AVE., SUITE E, LOUISVILLE	/s/ Erik J. Anderson	22 May 2025	0001174968

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SLDP	Common Stock	Award	$0	+118,808	+84%	$0.000000	260,370	21 May 2025	Direct	F1
holding	SLDP	Common Stock						187,617	21 May 2025	By WestRiver Management, LLC	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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 the 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.
F2	Represents 187,617 shares owned directly by WestRiver Management, of which the reporting person is the sole member and sole manager.

Content

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 the 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.

Represents 187,617 shares owned directly by WestRiver Management, of which the reporting person is the sole member and sole manager.