GWH
ESS Tech, Inc.$0.34-0.01 (-3.12%)Prev Close$0.35·MCap$11.2M·P/E—·Vol276.8K·Yield—
▲
Buys (12M)
1
$25.7K
▼
Sells (12M)
8
$30.6K
◆
Net Activity
Net Seller
$4.9K
●
Active Insiders
3
last 12 mo
Over the past 12 months, insider activity at ESS Tech, Inc. (GWH) has been mixed between buying and selling, with 1 insider purchase totaling $25.7K and 8 insider sales totaling $30.6K. The most recent insider transaction was by Suhadolnik Kate Eileen (officer: Chief Financial Officer), who sold $1.6K worth of shares on Aug 24, 2026. ESS Tech, Inc. operates in the Industrials sector, within the Electrical Equipment & Parts industry, with a market cap of $11.2M.
GWH Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Aug 24, 2026 | Suhadolnik Kate Eileen | officer: Chief Financial Officer | Sell | 3,927 | $0.40 | $1.6K | 156,830 |
| Aug 24, 2026 | Goodman Kelly F. | officer: SEE REMARKS | Sell | 5,400 | $0.40 | $2.2K | 205,220 |
| Jun 8, 2026 | Buckley Drew P | director, officer: CEO | Buy | 25,000 | $1.03 | $25.7K | 25,000 |
| May 26, 2026 | Suhadolnik Kate Eileen | officer: Chief Financial Officer | Sell | 3,657 | $0.93 | $3.4K | 162,679 |
| May 26, 2026 | Goodman Kelly F. | officer: SEE REMARKS | Sell | 5,233 | $0.93 | $4.8K | 213,371 |
| Feb 26, 2026 | Goodman Kelly F. | officer: SEE REMARKS | Sell | 2,269 | $1.54 | $3.5K | 215,853 |
| Feb 26, 2026 | Suhadolnik Kate Eileen | officer: Chief Financial Officer | Sell | 741 | $1.54 | $1.1K | 164,414 |
| Nov 20, 2025 | Goodman Kelly F. | Interim CEO | Sell | 4,513 | $2.40 | $10.8K | 0 |
| Nov 20, 2025 | Suhadolnik Kate Eileen | Interim CFO | Sell | 1,299 | $2.40 | $3.1K | 0 |
| Aug 20, 2025 | Goodman Kelly F. | Interim CEO | Sell | 4,326 | $1.61 | $7.0K | 0 |
| Aug 20, 2025 | Suhadolnik Kate Eileen | Interim CFO | Sell | 1,232 | $1.61 | $2.0K | 0 |
| May 20, 2025 | Goodman Kelly F. | Interim CEO | Sell | 2,164 | $1.96 | $4.2K | 0 |
| May 20, 2025 | Rabb Anthony | Chief Financial Officer | Sell | 2,741 | $1.96 | $5.4K | 0 |
| Feb 10, 2025 | Goodman Kelly F. | Interim CEO | Sell | 1,489 | $4.81 | $7.2K | 0 |
| May 20, 2023 | Rabb Anthony | Chief Financial Officer | Sell | 13,196 | $11.46 | $151.2K | 0 |
| May 17, 2023 | NIGGLI MICHAEL R | Director | Buy | 10,000 | $0.81 | $8.1K | 613,821 |
| May 16, 2023 | Hossfeld Rich | Director | Buy | 10,000 | $0.81 | $8.1K | 10,000 |
| May 16, 2023 | Teamey Kyle | Director | Buy | 4,000 | $0.84 | $3.4K | 35,986 |
| May 15, 2023 | NIGGLI MICHAEL R | Director | Buy | 20,000 | $1.13 | $22.6K | 603,821 |
| Mar 7, 2023 | NIGGLI MICHAEL R | Director | Buy | 5,000 | $1.65 | $8.3K | 583,821 |
| Mar 7, 2023 | Teamey Kyle | Director | Buy | 2,500 | $1.61 | $4.0K | 31,986 |
| Feb 23, 2023 | Dresselhuys Eric P. | Chief Executive Officer | Sell | 23,440 | $2.04 | $47.8K | 1,344,080 |
| Feb 23, 2023 | Evans Craig E | President | Sell | 5,536 | $2.04 | $11.3K | 5,561,524 |
| Dec 16, 2022 | NIGGLI MICHAEL R | Director | Buy | 19,100 | $2.56 | $48.9K | 578,821 |
| Nov 22, 2022 | Dresselhuys Eric P. | Chief Executive Officer | Sell | 14,339 | $3.82 | $54.8K | 1,367,520 |
| Nov 22, 2022 | Evans Craig E | President | Sell | 114,567 | $3.74 | $428.2K0.9% OS | 5,591,617 |
| Oct 20, 2022 | Moftakhar Amir | Chief Financial Officer | Sell | 4,193 | $3.48 | $14.6K | 563,043 |
| Oct 19, 2022 | Dresselhuys Eric P. | Chief Executive Officer | Sell | 90,684 | $3.72 | $337.3K0.7% OS | 1,434,914 |
| Oct 19, 2022 | Evans Craig E | President | Sell | 28,968 | $3.72 | $107.8K | 5,625,277 |
| Oct 19, 2022 | Moftakhar Amir | Chief Financial Officer | Sell | 16,720 | $3.72 | $62.2K | 567,236 |
| Oct 18, 2022 | Moftakhar Amir | Chief Financial Officer | Sell | 63,205 | $4.03 | $254.4K0.5% OS | 583,956 |
| Mar 3, 2022 | NIGGLI MICHAEL R | Director | Buy | 20,000 | $5.01 | $100.2K | 530,235 |
| Jan 25, 2022 | Dresselhuys Eric P. | Chief Executive Officer | Sell | 59,642 | $6.05 | $361.0K | 869,170 |
| Jan 25, 2022 | Evans Craig E | President | Sell | 1,342 | $6.05 | $8.1K | 5,373,083 |
GWH Insider Buying Activity
The following table shows recent insider purchases of ESS Tech, Inc. (GWH) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Jun 8, 2026 | Buckley Drew P | director, officer: CEO | Buy | 25,000 | $1.03 | $25.7K | 25,000 |
| May 17, 2023 | NIGGLI MICHAEL R | Director | Buy | 10,000 | $0.81 | $8.1K | 613,821 |
| May 16, 2023 | Hossfeld Rich | Director | Buy | 10,000 | $0.81 | $8.1K | 10,000 |
| May 16, 2023 | Teamey Kyle | Director | Buy | 4,000 | $0.84 | $3.4K | 35,986 |
| May 15, 2023 | NIGGLI MICHAEL R | Director | Buy | 20,000 | $1.13 | $22.6K | 603,821 |
| Mar 7, 2023 | NIGGLI MICHAEL R | Director | Buy | 5,000 | $1.65 | $8.3K | 583,821 |
| Mar 7, 2023 | Teamey Kyle | Director | Buy | 2,500 | $1.61 | $4.0K | 31,986 |
| Dec 16, 2022 | NIGGLI MICHAEL R | Director | Buy | 19,100 | $2.56 | $48.9K | 578,821 |
| Mar 3, 2022 | NIGGLI MICHAEL R | Director | Buy | 20,000 | $5.01 | $100.2K | 530,235 |
GWH Insider Selling Activity
The following table shows recent insider sales of ESS Tech, Inc. (GWH) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Aug 24, 2026 | Suhadolnik Kate Eileen | officer: Chief Financial Officer | Sell | 3,927 | $0.40 | $1.6K | 156,830 |
| Aug 24, 2026 | Goodman Kelly F. | officer: SEE REMARKS | Sell | 5,400 | $0.40 | $2.2K | 205,220 |
| May 26, 2026 | Suhadolnik Kate Eileen | officer: Chief Financial Officer | Sell | 3,657 | $0.93 | $3.4K | 162,679 |
| May 26, 2026 | Goodman Kelly F. | officer: SEE REMARKS | Sell | 5,233 | $0.93 | $4.8K | 213,371 |
| Feb 26, 2026 | Goodman Kelly F. | officer: SEE REMARKS | Sell | 2,269 | $1.54 | $3.5K | 215,853 |
| Feb 26, 2026 | Suhadolnik Kate Eileen | officer: Chief Financial Officer | Sell | 741 | $1.54 | $1.1K | 164,414 |
| Nov 20, 2025 | Goodman Kelly F. | Interim CEO | Sell | 4,513 | $2.40 | $10.8K | 0 |
| Nov 20, 2025 | Suhadolnik Kate Eileen | Interim CFO | Sell | 1,299 | $2.40 | $3.1K | 0 |
| Aug 20, 2025 | Goodman Kelly F. | Interim CEO | Sell | 4,326 | $1.61 | $7.0K | 0 |
| Aug 20, 2025 | Suhadolnik Kate Eileen | Interim CFO | Sell | 1,232 | $1.61 | $2.0K | 0 |
| May 20, 2025 | Goodman Kelly F. | Interim CEO | Sell | 2,164 | $1.96 | $4.2K | 0 |
| May 20, 2025 | Rabb Anthony | Chief Financial Officer | Sell | 2,741 | $1.96 | $5.4K | 0 |
| Feb 10, 2025 | Goodman Kelly F. | Interim CEO | Sell | 1,489 | $4.81 | $7.2K | 0 |
| May 20, 2023 | Rabb Anthony | Chief Financial Officer | Sell | 13,196 | $11.46 | $151.2K | 0 |
| Feb 23, 2023 | Dresselhuys Eric P. | Chief Executive Officer | Sell | 23,440 | $2.04 | $47.8K | 1,344,080 |
| Feb 23, 2023 | Evans Craig E | President | Sell | 5,536 | $2.04 | $11.3K | 5,561,524 |
| Nov 22, 2022 | Dresselhuys Eric P. | Chief Executive Officer | Sell | 14,339 | $3.82 | $54.8K | 1,367,520 |
| Nov 22, 2022 | Evans Craig E | President | Sell | 114,567 | $3.74 | $428.2K0.9% OS | 5,591,617 |
| Oct 20, 2022 | Moftakhar Amir | Chief Financial Officer | Sell | 4,193 | $3.48 | $14.6K | 563,043 |
| Oct 19, 2022 | Dresselhuys Eric P. | Chief Executive Officer | Sell | 90,684 | $3.72 | $337.3K0.7% OS | 1,434,914 |
| Oct 19, 2022 | Evans Craig E | President | Sell | 28,968 | $3.72 | $107.8K | 5,625,277 |
| Oct 19, 2022 | Moftakhar Amir | Chief Financial Officer | Sell | 16,720 | $3.72 | $62.2K | 567,236 |
| Oct 18, 2022 | Moftakhar Amir | Chief Financial Officer | Sell | 63,205 | $4.03 | $254.4K0.5% OS | 583,956 |
| Jan 25, 2022 | Dresselhuys Eric P. | Chief Executive Officer | Sell | 59,642 | $6.05 | $361.0K | 869,170 |
| Jan 25, 2022 | Evans Craig E | President | Sell | 1,342 | $6.05 | $8.1K | 5,373,083 |
GWH Insiders
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