ESS Tech, Inc. (GWH) · Insider trading
What ESS Tech's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$25,750
1 insider, 1 trade
Sold, 12 months
$16,592
2 insiders, 0% under a plan
Net, 12 months
+$9,158
bought less sold
Latest filing
2026-08-24
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Buckley Drew PDirector, CEO | $25,750 | – | 1 | 2026-06-04 | 25,000 |
| Goodman Kelly F.SEE REMARKS | – | $10,496 | 4 | 2026-08-21 | 205,220 |
| Suhadolnik Kate EileenChief Financial Officer | – | $6,096 | 4 | 2026-08-21 | 156,830 |
| Dresselhuys Eric P.Director, Chief Executive Officer | $5,230 | – | 1 | 2024-11-18 | 180,580 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-08-21 | Goodman Kelly F.SEE REMARKS | Sale | 5,400 | 0.40 | $2,160 | 205,220 | Form 4 |
| 2026-08-21 | Suhadolnik Kate EileenChief Financial Officer | Sale | 3,927 | 0.40 | $1,571 | 156,830 | Form 4 |
| 2026-06-04 | Buckley Drew PDirector, CEO | Buy | 25,000 | 1.03 | $25,750 | 25,000 | Form 4 |
| 2026-05-22 | Goodman Kelly F.SEE REMARKS | Sale | 2,751 | 0.93 | $2,558 | 210,620 | Form 4 |
| 2026-05-22 | Suhadolnik Kate EileenChief Financial Officer | Sale | 1,922 | 0.93 | $1,787 | 160,757 | Form 4 |
| 2026-05-21 | Goodman Kelly F.SEE REMARKS | Sale | 2,482 | 0.92 | $2,283 | 213,371 | Form 4 |
| 2026-05-21 | Suhadolnik Kate EileenChief Financial Officer | Sale | 1,735 | 0.92 | $1,596 | 162,679 | Form 4 |
| 2026-02-20 | Goodman Kelly F.SEE REMARKS | Sale | 2,269 | 1.54 | $3,494 | 215,853 | Form 4 |
| 2026-02-20 | Suhadolnik Kate EileenChief Financial Officer | Sale | 741 | 1.54 | $1,141 | 164,414 | Form 4 |
| 2024-11-18 | Dresselhuys Eric P.Director, Chief Executive Officer | Buy | 1,000 | 5.23 | $5,230 | 180,580 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
18 × grant or award9 × shares withheld for tax
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-05-29 | Nijhawan SandeepDirector | Grant or award A | +13,513 | – | 42,563 | Form 4 |
| 2026-05-29 | Garabedian RaffiDirector | Grant or award A | +13,513 | – | 53,185 | Form 4 |
| 2026-05-29 | Quarls HarryDirector | Grant or award A | +13,513 | – | 68,769 | Form 4 |
| 2026-05-29 | Wellman AlexiDirector | Grant or award A | +13,513 | – | 52,399 | Form 4 |
| 2026-05-29 | Hossfeld RichDirector | Grant or award A | +13,513 | – | 41,372 | Form 4 |
| 2026-02-13 | Goodman Kelly F.SEE REMARKS | Grant or award A | +137,500 | – | 218,122 | Form 4 |
| 2026-02-13 | Suhadolnik Kate EileenChief Financial Officer | Grant or award A | +137,500 | – | 165,155 | Form 4 |
| 2025-11-20 | Goodman Kelly F.Interim CEO | Shares withheld for tax F | −4,513 | 2.40 | 80,622 | Form 4 |
| 2025-11-20 | Suhadolnik Kate EileenInterim CFO | Shares withheld for tax F | −1,299 | 2.40 | 27,655 | Form 4 |
| 2025-10-13 | Niggli Michael RDirector | Grant or award A | +13,513 | – | 90,825 | Form 4 |
| 2025-10-13 | Nijhawan SandeepDirector | Grant or award A | +13,513 | – | 29,050 | Form 4 |
| 2025-10-13 | Garabedian RaffiDirector | Grant or award A | +13,513 | – | 39,672 | Form 4 |
| 2025-10-13 | Quarls HarryDirector | Grant or award A | +13,513 | – | 13,513 | Form 4 |
| 2025-10-13 | Wellman AlexiDirector | Grant or award A | +13,513 | – | 38,886 | Form 4 |
| 2025-10-13 | Teamey KyleDirector | Grant or award A | +13,513 | – | 38,740 | Form 4 |
| 2025-10-13 | Hossfeld RichDirector | Grant or award A | +13,513 | – | 27,859 | Form 4 |
| 2025-08-20 | Suhadolnik Kate EileenInterim CFO | Shares withheld for tax F | −1,232 | 1.61 | 28,954 | Form 4 |
| 2025-08-20 | Goodman Kelly F.Interim CEO | Shares withheld for tax F | −4,326 | 1.61 | 85,135 | Form 4 |
| 2025-08-18 | Trivedi Jigish DhirajlalCOO | Grant or award A | +275,000 | – | 275,000 | Form 4 |
| 2025-05-20 | Rabb AnthonyChief Financial Officer | Shares withheld for tax F | −2,741 | 1.96 | 109,392 | Form 4 |
| 2025-05-20 | Goodman Kelly F.Interim CEO | Shares withheld for tax F | −2,164 | 1.96 | 89,461 | Form 4 |
| 2025-04-13 | Goodman Kelly F.Interim CEO | Grant or award A | +36,930 | – | 91,625 | Form 4 |
| 2025-04-13 | Rabb AnthonyChief Financial Officer | Grant or award A | +42,500 | – | 112,133 | Form 4 |
| 2025-02-20 | Rabb AnthonyChief Financial Officer | Shares withheld for tax F | −1,987 | 4.81 | 69,633 | Form 4 |
| 2025-02-20 | Goodman Kelly F.Interim CEO | Shares withheld for tax F | −1,489 | 4.81 | 54,695 | Form 4 |
| 2025-02-10 | Goodman Kelly F.Interim CEO | Grant or award A | +10,000 | – | 56,184 | Form 4 |
| 2024-11-20 | Rabb AnthonyChief Financial Officer | Shares withheld for tax F | −1,889 | 5.21 | 71,620 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.