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

Role
Director
Signature
/s/ Erik J. Anderson
Stock symbol
SLDP
Transactions as of
Dec 4, 2025
Transactions value $
-$156,072
Form type
4
Date filed
12/8/2025, 05:04 PM
Previous filing
Aug 12, 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 2025-12-08 0001174968

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SLDP Common Stock Sale -$156K -30K -15.99% $5.20 158K Dec 4, 2025 By WestRiver Management, LLC F1
holding SLDP Common Stock 260K Dec 4, 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The reporting person is the sole member and sole manager of WestRiver Management, LLC.