GWHT insider buying and SEC filings, explained
ESS Tech, Inc. · CIK 1819438
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- OTC
- Industry (SIC)
- Miscellaneous Electrical Machinery, Equipment & Supplies
- State of incorporation
- DE
- Fiscal year end
- Dec 31
- Former names
- ACON S2 Acquisition Corp.
Insider activity in the last 12 months
Bought
$26K
Insiders who bought
1
Sold (not marked 10b5-1)
$17K
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Aug 21, 2026 | Sale | Kate Eileen Suhadolnik (CFO) sold 3,927 shares at $0.4000 ($2K). Holdings down 2% to 156,830 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 24, 2026 |
| Aug 21, 2026 | Sale | Kelly F. Goodman (Chief Strategy Officer) sold 5,400 shares at $0.4000 ($2K). Holdings down 3% to 205,220 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 24, 2026 |
| Jun 4, 2026 | Purchase (code P) | Drew P Buckley (CEO and Director) bought 25,000 shares at about $1.03 ($26K), reported as a purchase (code P). New position of 25,000 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 8, 2026 |
| May 21–22, 2026 | Sale | Kate Eileen Suhadolnik (CFO) sold 3,657 shares between May 21 and May 22 at about $0.9253 ($3K). Holdings down 2% to 160,757 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 26, 2026 |
| May 21–22, 2026 | Sale | Kelly F. Goodman (Chief Strategy Officer) sold 5,233 shares between May 21 and May 22 at about $0.9253 ($5K). Holdings down 2% to 210,620 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 26, 2026 |
| Feb 20, 2026 | Sale | Kate Eileen Suhadolnik (CFO) sold 741 shares at $1.54 ($1K). Holdings down <1% to 164,414 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 26, 2026 |
| Feb 20, 2026 | Sale | Kelly F. Goodman (Chief Strategy Officer) sold 2,269 shares at $1.54 ($3K). Holdings down 1% to 215,853 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Feb 26, 2026 |
10 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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