12 insiders reported 42 Form 4 transactions for ESS Tech, Inc. (GWH) over the past 18 months (most recent 2026-08-24). Recent activity: Goodman Kelly F. (Officer title: Chief Strategy Officer and General Counsel) Sell 5,400 shares, Suhadolnik Kate Eileen (Chief Financial Officer) Sell 3,927 shares, Buckley Drew P (CEO) Buy 25,000 shares, Nijhawan Sandeep (Director) Buy 13,513 shares, Quarls Harry (Director) Buy 13,513 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-24 | Goodman Kelly F. | Officer title: Chief Strategy Officer and General Counsel | Sell | 5,400 | $2,172 |
| 2026-08-24 | Suhadolnik Kate Eileen | Chief Financial Officer | Sell | 3,927 | $1,579 |
| 2026-06-08 | Buckley Drew P | CEO | Buy | 25,000 | $25,750 |
| 2026-06-02 | Nijhawan Sandeep | Director | Buy | 13,513 | $0 |
| 2026-06-02 | Quarls Harry | Director | Buy | 13,513 | $0 |
| 2026-06-02 | Garabedian Raffi | Director | Buy | 13,513 | $0 |
| 2026-06-02 | Hossfeld Rich | Director | Buy | 13,513 | $0 |
| 2026-06-02 | WELLMAN ALEXI | Director | Buy | 13,513 | $0 |
| 2026-05-26 | Goodman Kelly F. | Officer title: Chief Strategy Officer and General Counsel | Sell | 2,482 | $2,283 |
| 2026-05-26 | Goodman Kelly F. | Officer title: Chief Strategy Officer and General Counsel | Sell | 2,751 | $2,558 |
| 2026-05-26 | Suhadolnik Kate Eileen | Chief Financial Officer | Sell | 1,735 | $1,596 |
| 2026-05-26 | Suhadolnik Kate Eileen | Chief Financial Officer | Sell | 1,922 | $1,787 |
| 2026-02-26 | Goodman Kelly F. | Officer title: Chief Strategy Officer and General Counsel | Buy | 137,500 | $0 |
| 2026-02-26 | Goodman Kelly F. | Officer title: Chief Strategy Officer and General Counsel | Sell | 2,269 | $3,494 |
| 2026-02-26 | Suhadolnik Kate Eileen | Chief Financial Officer | Sell | 741 | $1,141 |
| 2026-02-26 | Suhadolnik Kate Eileen | Chief Financial Officer | Buy | 137,500 | $0 |
| 2025-11-21 | Suhadolnik Kate Eileen | Interim CFO | Sell | 1,299 | $3,118 |
| 2025-11-21 | Goodman Kelly F. | Interim CEO | Sell | 4,513 | $10,831 |
| 2025-10-15 | WELLMAN ALEXI | Director | Buy | 13,513 | $0 |
| 2025-10-15 | Garabedian Raffi | Director | Buy | 13,513 | $0 |
| 2025-10-15 | Quarls Harry | Director | Buy | 13,513 | $0 |
| 2025-10-15 | Hossfeld Rich | Director | Buy | 13,513 | $0 |
| 2025-10-15 | NIGGLI MICHAEL R | Director | Buy | 13,513 | $0 |
| 2025-10-15 | Nijhawan Sandeep | Director | Buy | 13,513 | $0 |
| 2025-10-15 | Teamey Kyle | Director | Buy | 13,513 | $0 |
Source: SEC Form 4 filings · as of 2026-08-24