ESS Tech, Inc. — Director's Dealing 2025

Feb 14, 2025

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: ESS Tech, Inc. (GWH)
CIK: 0001819438
Period of Report: 2025-02-13

Reporting Person: Goodman Kelly F. (Interim CEO)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	46184	Direct

Footnotes

F1: 1,022 of the reported shares of common stock were acquired by the reporting person under the Company's Employee Stock Purchase Plan.

F2: 11,471 of the reported shares of common stock were acquired by the reporting person upon the vesting of restricted stock units, or RSUs, through February 13, 2025.

F3: 33,691 of the report shares of common stock are represented by unvested RSUs granted to the reporting person, with 2,760 RSUs granted on April 21, 2022, 11,466 RSUs granted on March 13, 2023, 3,215 RSUs granted on September 5, 2023, and 16,250 RSUs granted on February 15, 2024, and with each respective RSU grant vesting 1/16th on a quarterly basis from the respective grant date.