January 28, 2026 · Form 4 insider transaction
Buckley Drew P bought 550,000 shares of ESS Tech, Inc. at $0.00 per share, a transaction worth N/A. The trade was recorded as grant or award and disclosed on an SEC Form 4, filed 1 day after the transaction.
25 % of the shares subject to the option will vest on February 20, 2027 and 1/16th of the shares subject to the option shall vest quarterly thereafter, subject to the Reporting Person remains as Service Provider to the issuer through each such vest date.