Alexi Wellman - 29 May 2026 Form 4 Insider Report for ESS Tech, Inc. (GWH)

Reporting relationship: Director
Issuer ticker: GWH
Reported as of: 29 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 02 Jun 2026, 18:11:41 UTC
Prior SEC filing: 14 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Kate Suhadolnik, by power of attorney

Key filing fact

Alexi Wellman filed Form 4 for ESS Tech, Inc. (GWH) on 02 Jun 2026.

Key facts

This page summarizes Alexi Wellman's Form 4 filing for ESS Tech, Inc. (GWH).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 02 Jun 2026, 18:11.

Change

Previous filing in this sequence was filed on 14 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001705428 Primary reporting owner

WELLMAN ALEXI

Relationship: Director
Address: C/O ESS TECH, INC., 26440 SW PARKWAY AVE., BLDG. 83, WILSONVILLE
Signature: /s/ Kate Suhadolnik, by power of attorney
Signature date: 02 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

GWH transaction

Common Stock

Award

Transaction value
Shares: +13,513
Change %: +35%
Price: $0.000000^*
Shares after: 52,399
Date: 29 May 2026
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

The reported shares are represented by restricted stock units ("RSUs"), which vest on the earlier of (i) May 29, 2027 or (ii) the day prior to the next annual meeting of stockholders. The Reporting Person has elected to defer the settlement of these RSUs to a date within 30 days of the earlier of (i) his separation of service from the Issuer within the meaning of Section 409A of the Internal Revenue Code (Section 409A) or (ii) the date on which a change of control (as defined in the Issuer's plan) occurs, provided that such transaction qualifies as a change of control within the meaning of Section 409A.

Footnote F2

A portion of these securities are RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Common Stock.