GWH insider transaction filings
ESS Tech, Inc. — 50 most recent Form 4 filings from SEC EDGAR, normalized by FilingPulse. Latest filing: 2026-08-24. Screen GWH transaction legs live →
Insider transaction summary — last 90 days
2026-06-24 to 2026-09-22, from the filings listed below: 2 Form 4 filings. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 2 legs across 2 filings by 2 insiders — 9,327 shares, $3,751 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 0.
- Largest priced transaction: sale of 5,400 shares @ $0.40 ($2,172) by Goodman Kelly F., filed 2026-08-24.
By insider — same window
Open-market purchase/sale legs on non-derivative securities, grouped by the filing's reporting owner(s); joint filings appear once. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Insider | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|
| Goodman Kelly F. — SEE REMARKS | 1 | — | 1 leg · 5,400 sh · $2,172 | — |
| Suhadolnik Kate Eileen — Chief Financial Officer | 1 | — | 1 leg · 3,927 sh · $1,579 | — |
Recent Form 4 filings — ESS Tech, Inc.
| Filed | Form | Insider | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-24 | 4 | Goodman Kelly F. — SEE REMARKS | Sale (S): 5,400 @ $0.40 | EDGAR |
| 2026-08-24 | 4 | Suhadolnik Kate Eileen — Chief Financial Officer | Sale (S): 3,927 @ $0.40 | EDGAR |
| 2026-06-08 | 4 | Buckley Drew P — CEO, Director | Purchase (P): 25,000 @ $1.03 | EDGAR |
| 2026-06-02 | 4 | Hossfeld Rich — Director | Grant/award (A): 13,513 @ $0 | EDGAR |
| 2026-06-02 | 4 | WELLMAN ALEXI — Director | Grant/award (A): 13,513 @ $0 | EDGAR |
| 2026-06-02 | 4 | Quarls Harry — Director | Grant/award (A): 13,513 @ $0 | EDGAR |
| 2026-06-02 | 4 | Garabedian Raffi — Director | Grant/award (A): 13,513 @ $0 | EDGAR |
| 2026-06-02 | 4 | Nijhawan Sandeep — Director | Grant/award (A): 13,513 @ $0 | EDGAR |
| 2026-05-26 | 4 | Suhadolnik Kate Eileen — Chief Financial Officer | Sale (S): 1,735 @ $0.92 · Sale (S): 1,922 @ $0.93 | EDGAR |
| 2026-05-26 | 4 | Goodman Kelly F. — SEE REMARKS | Sale (S): 2,482 @ $0.92 · Sale (S): 2,751 @ $0.93 | EDGAR |
| 2026-02-26 | 4 | Suhadolnik Kate Eileen — Chief Financial Officer | Sale (S): 741 @ $1.54 | EDGAR |
| 2026-02-26 | 4 | Suhadolnik Kate Eileen — Chief Financial Officer | Grant/award (A): 137,500 @ $0 · Grant/award (A): 137,500 (derivative) @ $0 | EDGAR |
| 2026-02-26 | 4 | Goodman Kelly F. — SEE REMARKS | Sale (S): 2,269 @ $1.54 | EDGAR |
| 2026-02-26 | 4 | Goodman Kelly F. — SEE REMARKS | Grant/award (A): 137,500 @ $0 · Grant/award (A): 137,500 (derivative) @ $0 | EDGAR |
| 2026-01-29 | 4 | Buckley Drew P — CEO, Director | Grant/award (A): 550,000 (derivative) @ $0 | EDGAR |
| 2025-11-21 | 4 | Suhadolnik Kate Eileen — Interim CFO | Tax withholding (F): 1,299 @ $2.40 | EDGAR |
| 2025-11-21 | 4 | Goodman Kelly F. — Interim CEO | Tax withholding (F): 4,513 @ $2.40 | EDGAR |
| 2025-10-15 | 4 | Hossfeld Rich — Director | Grant/award (A): 13,513 @ $0 | EDGAR |
| 2025-10-15 | 4 | Teamey Kyle — Director | Grant/award (A): 13,513 @ $0 | EDGAR |
| 2025-10-15 | 4 | WELLMAN ALEXI — Director | Grant/award (A): 13,513 @ $0 | EDGAR |
| 2025-10-15 | 4 | Quarls Harry — Director | Grant/award (A): 13,513 @ $0 | EDGAR |
| 2025-10-15 | 4 | Garabedian Raffi — Director | Grant/award (A): 13,513 @ $0 | EDGAR |
| 2025-10-15 | 4 | Nijhawan Sandeep — Director | Grant/award (A): 13,513 @ $0 | EDGAR |
| 2025-10-15 | 4 | NIGGLI MICHAEL R — Director | Grant/award (A): 13,513 @ $0 | EDGAR |
| 2025-09-05 | 4 | Trivedi Jigish Dhirajlal — COO | Grant/award (A): 275,000 @ $0 | EDGAR |
| 2025-08-29 | 4 | Suhadolnik Kate Eileen — Interim CFO | Tax withholding (F): 1,232 @ $1.61 | EDGAR |
| 2025-08-21 | 4 | Goodman Kelly F. — Interim CEO | Tax withholding (F): 4,326 @ $1.61 | EDGAR |
| 2025-05-22 | 4 | Goodman Kelly F. — Interim CEO | Tax withholding (F): 2,164 @ $1.96 | EDGAR |
| 2025-05-22 | 4 | Rabb Anthony — Chief Financial Officer | Tax withholding (F): 2,741 @ $1.96 | EDGAR |
| 2025-04-15 | 4 | Rabb Anthony — Chief Financial Officer | Tax withholding (F): 100 @ $18 · Tax withholding (F): 106 @ $18.15 · Tax withholding (F): 4,298 @ $17.55 · Tax withholding (F): 1,044 @ $13.67 · Tax withholding (F): 1,886 @ $12.15 · Tax withholding (F): 1,886 @ $8.19 · +3 more | EDGAR |
| 2025-04-15 | 4 | Goodman Kelly F. — Interim CEO | Grant/award (A): 36,930 @ $0 | EDGAR |
| 2025-04-04 | 4 | Goodman Kelly F. — Interim CEO | Grant/award (A): 10,000 @ $0 · Tax withholding (F): 1,489 @ $4.81 | EDGAR |
| 2024-11-18 | 4 | Dresselhuys Eric P. — Chief Executive Officer, Director | Purchase (P): 1,000 @ $5.23 | EDGAR |
| 2024-09-17 | 4 | Nijhawan Sandeep — Director | Sale (S): 7,000 @ $5.72 | EDGAR |
| 2024-09-03 | 4 | Teamey Kyle — Director | Purchase (P): 142 @ $6.73 | EDGAR |
| 2024-09-03 | 4 | NIGGLI MICHAEL R — Director | Option exercise (M): 11,852 @ $6.88 · Option exercise (M): 11,852 (derivative) @ $0 | EDGAR |
| 2024-05-17 | 4 | Hossfeld Rich — Director | Disposition to issuer (D): 135,373 @ $0 · Grant/award (A): 202,702 @ $0 | EDGAR |
| 2024-05-17 | 4 | Teamey Kyle — Director | Grant/award (A): 202,702 @ $0 | EDGAR |
| 2024-05-17 | 4 | WELLMAN ALEXI — Director | Grant/award (A): 202,702 @ $0 | EDGAR |
| 2024-05-17 | 4 | Quarls Harry — Director | Grant/award (A): 202,702 @ $0 | EDGAR |
| 2024-05-17 | 4 | Garabedian Raffi — Director | Grant/award (A): 202,702 @ $0 | EDGAR |
| 2024-05-17 | 4 | Nijhawan Sandeep — Director | Grant/award (A): 202,702 @ $0 | EDGAR |
| 2024-05-17 | 4 | NIGGLI MICHAEL R — Director | Grant/award (A): 202,702 @ $0 | EDGAR |
| 2024-05-15 | 4 | Teamey Kyle — Director | Purchase (P): 1,250 @ $0.79 | EDGAR |
| 2024-05-13 | 4 | Quarls Harry — Director | Purchase (P): 57,310 @ $0.79 | EDGAR |
| 2024-05-09 | 4 | Quarls Harry — Director | Purchase (P): 42,690 @ $0.84 | EDGAR |
| 2024-05-08 | 4 | Dresselhuys Eric P. — Chief Executive Officer, Director | Grant/award (A): 622,771 @ $0 | EDGAR |
| 2024-03-18 | 4 | Hossfeld Rich — Director | Purchase (P): 200 @ $0.73 · Purchase (P): 2,300 @ $0.73 | EDGAR |
| 2024-02-16 | 4 | Rabb Anthony — Chief Financial Officer | Grant/award (A): 550,000 @ $0 | EDGAR |
| 2024-02-16 | 4/A | Rabb Anthony — Chief Financial Officer | Grant/award (A): 76,452 @ $0 | EDGAR |
Recent 8-K events — ESS Tech, Inc.
| Filed | Form | Items reported | Source |
|---|---|---|---|
| 2026-09-03 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2026-08-21 | 8-K | 1.01 — Entry into a Material Definitive Agreement 3.02 — Unregistered Sales of Equity Securities 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-08-11 | 8-K | 2.02 — Results of Operations and Financial Condition 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-08-06 | 8-K | 2.02 — Results of Operations and Financial Condition 8.01 — Other Events | EDGAR |
| 2026-07-17 | 8-K | 1.01 — Entry into a Material Definitive Agreement 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-07-01 | 8-K | 3.01 — Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing | EDGAR |
| 2026-06-23 | 8-K | 2.02 — Results of Operations and Financial Condition 7.01 — Regulation FD Disclosure 8.01 — Other Events 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-06-18 | 8-K | 5.02 — Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | EDGAR |
| 2026-06-15 | 8-K | 3.01 — Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing 7.01 — Regulation FD Disclosure 9.01 — Financial Statements and Exhibits | EDGAR |
| 2026-05-29 | 8-K | 5.07 — Submission of Matters to a Vote of Security Holders | EDGAR |
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