Delisting riskPopularity #4,086
ESS Tech (GWH)
Builds iron-flow systems for long-duration grid and on-site energy storage.
$0.3760
After hours−0.02 (−4.45%)
At close$0.3935(+6.41%)
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13F · 13D/G · Form 4
| Institutions | 24.84% | 7.30M shares | |
|---|---|---|---|
| 46 holders · as of Jun 30, 2026 | |||
| Insiders | 6.51% | 1.91M shares | |
| 14 holders · as of Aug 24, 2026 | |||
| Other | 68.65% | 20.17M shares | |
| remainder | |||
29.39M company shares as of Sep 4, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
Two share counts disagree (32.97M in the company's Sep 22, 2026 report, 29.39M elsewhere); stakes use the report.
13F, as of Jun 30, 2026
46 holders · 7.30M shares · 6 new positions · 18 increased · 8 reduced · 10 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| SoftBank Group Corp. | 2.40M | 8.16% | 0 | Aug 14, 2026 |
| Alyeska Investment Group, L.P. | 1.40M | 4.76% | 0 | Aug 14, 2026 |
| Vanguard Capital Management LLC | 638.9K | 2.17% | +4.2K | Aug 13, 2026 |
| UBS Group AG | 602.6K | 2.05% | +453.3K | Aug 13, 2026 |
| Arosa Capital Management LP | 550.0K | 1.87% | −360.0K | Aug 14, 2026 |
| Heights Capital Management, Inc | 548.6K | 1.87% | −414.9K | Aug 14, 2026 |
| Shay Capital LLC | 210.1K | 0.72% | +30.1K | Aug 14, 2026 |
| Geode Capital Management, LLC | 210.0K | 0.71% | −13.5K | Aug 12, 2026 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| SB Energy Global Holdings One Ltd. | 20.20% | 2.40M | 13D | Mar 3, 2025 |
| Ayrton Capital LLC | 9.99% | 3.02M | 13G | May 11, 2026 |
| Alyeska Investment Group, L.P. | 5.15% | 1.40M | 13G | May 15, 2026 |
Form 4
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 21, 2026 | Kelly F. Goodmanofficer: SEE REMARKS | Sale | 5,400 | $0.4022 | 205,220 |
| Aug 21, 2026 | Kate Eileen Suhadolnikofficer: Chief Financial Officer | Sale | 3,927 | $0.4022 | 156,830 |
| Jun 4, 2026 | Drew P. Buckleydirector, officer: CEO | Purchase | 25,000 | $1.03 | 25,000 |
| May 22, 2026 | Kelly F. Goodmanofficer: SEE REMARKS | Sale | 2,751 | $0.9346 | 210,620 |
| May 21, 2026 | Kelly F. Goodmanofficer: SEE REMARKS | Sale | 2,482 | $0.9181 | 213,371 |
| May 22, 2026 | Kate Eileen Suhadolnikofficer: Chief Financial Officer | Sale | 1,922 | $0.9346 | 160,757 |
| May 21, 2026 | Kate Eileen Suhadolnikofficer: Chief Financial Officer | Sale | 1,735 | $0.9181 | 162,679 |
| Feb 20, 2026 | Kelly F. Goodmanofficer: SEE REMARKS | Sale | 2,269 | $1.54 | 215,853 |
| Feb 20, 2026 | Kate Eileen Suhadolnikofficer: Chief Financial Officer | Sale | 741 | $1.54 | 164,414 |
House and Senate disclosures
Not reported.