GWHTOTCMiscellaneous Electrical Machinery, Equipment & SuppliesFiscal year ends December 31
ESS Tech, Inc.
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 11, 2026
$0.08−0.00 (-4.58%)
Close on Oct 19, 2026
- Market cap
- $2.75M
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
22.1%
7M of 33M shares
Institutional holders
46
5 new, 8 sold out
Net institutional buying
-0M
In Q2 2026
Insider trades, 12 months
1 buys · 8 sales
Net bought $9.16K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Cycle Capital Fund III, L.P. | 9,205,314 | 5.30% | 13G (passive) amendment | Dec 31, 2023 |
| Ayrton Capital LLC | 3,018,635 | 9.99% | 13G (passive) | Mar 31, 2026 |
| Alto Opportunity Master Fund, SPC - Segregated Master Portfolio B | 2,563,934 | 8.14% | 13G (passive) amendment | Jun 30, 2026 |
| SB Energy Global Holdings Limited | 2,396,980 | 20.20% | 13D (active) amendment | Aug 23, 2024 |
| Andrew Haughian | 10,859,111 | 6.30% | 13G (passive) amendment | Dec 31, 2023 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of GWHT | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Softbank Group Corp. | 2,396,980 | 7.27% | $2.28M | – | 0.01% |
| Alyeska Investment Group, L.P. | 1,400,000 | 4.25% | $1.33M | – | 0.00% |
| Vanguard Capital Management LLC | 638,920 | 1.94% | $606.97K | +4,200 | 0.00% |
| UBS Group AG | 602,607 | 1.83% | $572.48K | +453,328 | 0.00% |
| Arosa Capital Management LP | 550,000 | 1.67% | $522.50K | −360,000 | 0.09% |
| Heights Capital Management, Inc | 548,621 | 1.66% | $521.19K | −414,874 | 0.12% |
| Shay Capital LLC | 210,146 | 0.64% | $199.64K | +30,146 | 0.01% |
| Geode Capital Management, LLC | 210,037 | 0.64% | $199.55K | −13,524 | 0.00% |
| BlackRock, Inc. | 133,867 | 0.41% | $127.17K | +83,497 | 0.00% |
| Vanguard Fiduciary Trust Co | 129,877 | 0.39% | $123.38K | +60,475 | 0.00% |
| Green Alpha Advisors, LLC | 115,775 | 0.35% | $109.99K | +1,195 | 0.07% |
| Pathstone Holdings, LLC | 88,982 | 0.27% | $85.07K | +1,534 | 0.00% |
| FMR LLC | 52,485 | 0.16% | $49.86K | −4 | 0.00% |
| Northern Trust Corp | 47,532 | 0.14% | $45.16K | +16,193 | 0.00% |
| State Street Corp | 46,975 | 0.14% | $44.63K | – | 0.00% |
| PKS Advisory Services, LLC | 24,000 | 0.07% | $22.80K | New | 0.00% |
| Bridgeway Capital Management, LLC | 20,000 | 0.06% | $19.00K | – | 0.00% |
| JPMorgan Chase & Co | 19,896 | 0.06% | $19.62K | −11,640 | 0.00% |
| Primoris Wealth Advisors, LLC | 16,500 | 0.05% | $15.68K | – | 0.01% |
| Renaissance Technologies LLC | 12,700 | 0.04% | $12.07K | New | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 46 | 7M | 22.1% | 5 / 13 | 8 / 8 | 1M | 1M |
| Q1 2026 | 51 | 8M | 23.1% | 10 / 12 | 7 / 12 | 2M | 0M |
| Q4 2025 | 55 | 6M | 19.3% | 18 / 16 | 5 / 9 | 3M | 0M |
| Q3 2025 | 46 | 4M | 11.4% | 8 / 12 | 5 / 11 | 1M | 0M |
| Q2 2025 | 49 | 3M | 9.2% | 8 / 11 | 8 / 4 | 0M | 0M |
| Q1 2025 | 45 | 3M | 10.2% | 2 / 3 | 13 / 12 | 0M | 0M |
| Q4 2024 | 56 | 3M | 10.6% | 13 / 10 | 10 / 6 | 0M | 0M |
| Q3 2024 | 50 | 3M | 9.9% | 49 / 0 | 0 / 0 | 3M | 0M |
| Q2 2024 | 1 | 0M | 0.0% | 1 / 0 | 0 / 0 | 0M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of GWHT | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 367,381 | 1.11% | $349.01K | 0.00% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 271,539 | 0.82% | $257.96K | 0.00% | Jun 30, 2026 |
| Fidelity Extended Market Index Fund | 118,731 | 0.36% | $119.92K | 0.00% | May 31, 2026 |
| iShares Micro-Cap ETF | 78,252 | 0.24% | $74.34K | 0.00% | Jun 30, 2026 |
| Select Technology Portfolio | 52,485 | 0.16% | $53.01K | 0.00% | May 31, 2026 |
| Fidelity Series Total Market Index Fund | 30,103 | 0.09% | $30.40K | 0.00% | May 31, 2026 |
| Fidelity Total Market Index Fund | 24,205 | 0.07% | $24.45K | 0.00% | May 31, 2026 |
| Ultra-Small Company Market Fund | 20,000 | 0.06% | $19.00K | 0.01% | Jun 30, 2026 |
| 1290 VT Micro Cap Portfolio | 5,244 | 0.02% | $4.98K | 0.00% | Jun 30, 2026 |
| State Street Balanced Index Fund | 971 | 0.00% | $922 | 0.00% | Jun 30, 2026 |
| Knights of Columbus U.S. ALL CAP INDEX FUND | 131 | 0.00% | $98 | 0.00% | Jul 31, 2026 |
| Blackstone Alternative Multi-Strategy Fund | -6,613 | -0.02% | -$6.28K | -0.00% | Jun 30, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Drew P. Buckley | CEO, Director | 25,000 | 0.08% | Jun 8, 2026 |
| Eric P. Dresselhuys | Chief Executive Officer, Director | 180,580 | 0.55% | Nov 18, 2024 |
| Kate Eileen Suhadolnik | Chief Financial Officer | 156,830 | 0.48% | Aug 24, 2026 |
| Kelly F. Goodman | SEE REMARKS | 205,220 | 0.62% | Aug 24, 2026 |
| Jigish Dhirajlal Trivedi | COO | 275,000 | 0.83% | Sep 5, 2025 |
| Anthony Rabb | Chief Financial Officer | 2,609,392 | 7.91% | May 22, 2025 |
| Raffi Garabedian | Director | 53,185 | 0.16% | Jun 2, 2026 |
| Rich Hossfeld | Director | 41,372 | 0.13% | Jun 2, 2026 |
| Harry Quarls | Director | 68,769 | 0.21% | Jun 2, 2026 |
| Alexi Wellman | Director | 52,399 | 0.16% | Jun 2, 2026 |
| Sandeep Nijhawan | Director | 42,563 | 0.13% | Jun 2, 2026 |
| Kyle Teamey | Director | 38,740 | 0.12% | Oct 15, 2025 |
| Michael R. Niggli | Director | 101,639 | 0.31% | Oct 15, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Kelly F. Goodman SEE REMARKS | Aug 21, 2026 | Sale | −5,400 | $0.40 | $2.16K | 205,220 |
| Kate Eileen Suhadolnik Chief Financial Officer | Aug 21, 2026 | Sale | −3,927 | $0.40 | $1.57K | 156,830 |
| Drew P. Buckley CEO, Director | Jun 4, 2026 | Buy | +25,000 | $1.03 | $25.75K | 25,000 |
| Harry Quarls Director | May 29, 2026 | Award | +13,513 | – | – | 68,769 |
| Raffi Garabedian Director | May 29, 2026 | Award | +13,513 | – | – | 53,185 |
| Rich Hossfeld Director | May 29, 2026 | Award | +13,513 | – | – | 41,372 |
| Alexi Wellman Director | May 29, 2026 | Award | +13,513 | – | – | 52,399 |
| Sandeep Nijhawan Director | May 29, 2026 | Award | +13,513 | – | – | 42,563 |
| Kelly F. Goodman SEE REMARKS | May 22, 2026 | Sale | −2,751 | $0.93 | $2.56K | 210,620 |
| Kate Eileen Suhadolnik Chief Financial Officer | May 22, 2026 | Sale | −1,922 | $0.93 | $1.79K | 160,757 |
| Kelly F. Goodman SEE REMARKS | May 21, 2026 | Sale | −2,482 | $0.92 | $2.28K | 213,371 |
| Kate Eileen Suhadolnik Chief Financial Officer | May 21, 2026 | Sale | −1,735 | $0.92 | $1.60K | 162,679 |
| Kate Eileen Suhadolnik Chief Financial Officer | Feb 20, 2026 | Sale | −741 | $1.54 | $1.14K | 164,414 |
| Kelly F. Goodman SEE REMARKS | Feb 20, 2026 | Sale | −2,269 | $1.54 | $3.49K | 215,853 |
| Kate Eileen Suhadolnik Chief Financial Officer | Feb 13, 2026 | Award | +137,500 | – | – | 165,155 |
| Kelly F. Goodman SEE REMARKS | Feb 13, 2026 | Award | +137,500 | – | – | 218,122 |
| Kate Eileen Suhadolnik Interim CFO | Nov 20, 2025 | Tax withholding | −1,299 | $2.40 | $3.12K | 27,655 |
| Kelly F. Goodman Interim CEO | Nov 20, 2025 | Tax withholding | −4,513 | $2.40 | $10.83K | 80,622 |
| Kyle Teamey Director | Oct 13, 2025 | Award | +13,513 | – | – | 38,740 |
| Michael R. Niggli Director | Oct 13, 2025 | Award | +13,513 | – | – | 90,825 |
| Raffi Garabedian Director | Oct 13, 2025 | Award | +13,513 | – | – | 39,672 |
| Sandeep Nijhawan Director | Oct 13, 2025 | Award | +13,513 | – | – | 29,050 |
| Harry Quarls Director | Oct 13, 2025 | Award | +13,513 | – | – | 13,513 |
| Rich Hossfeld Director | Oct 13, 2025 | Award | +13,513 | – | – | 27,859 |
| Alexi Wellman Director | Oct 13, 2025 | Award | +13,513 | – | – | 38,886 |
| Kate Eileen Suhadolnik Interim CFO | Aug 20, 2025 | Tax withholding | −1,232 | $1.61 | $1.98K | 28,954 |
| Kelly F. Goodman Interim CEO | Aug 20, 2025 | Tax withholding | −4,326 | $1.61 | $6.96K | 85,135 |
| Jigish Dhirajlal Trivedi COO | Aug 18, 2025 | Award | +275,000 | – | – | 275,000 |
| Anthony Rabb Chief Financial Officer | May 20, 2025 | Tax withholding | −2,741 | $1.96 | $5.37K | 109,392 |
| Kelly F. Goodman Interim CEO | May 20, 2025 | Tax withholding | −2,164 | $1.96 | $4.24K | 89,461 |
| Anthony Rabb Chief Financial Officer | Apr 13, 2025 | Award | +42,500 | – | – | 112,133 |
| Kelly F. Goodman Interim CEO | Apr 13, 2025 | Award | +36,930 | – | – | 91,625 |
| Anthony Rabb Chief Financial Officer | Feb 20, 2025 | Tax withholding | −1,987 | $4.81 | $9.56K | 69,633 |
| Kelly F. Goodman Interim CEO | Feb 20, 2025 | Tax withholding | −1,489 | $4.81 | $7.16K | 54,695 |
| Kelly F. Goodman Interim CEO | Feb 10, 2025 | Award | +10,000 | – | – | 56,184 |
| Anthony Rabb Chief Financial Officer | Nov 20, 2024 | Tax withholding | −1,889 | $5.21 | $9.84K | 71,620 |
| Eric P. Dresselhuys Chief Executive Officer, Director | Nov 18, 2024 | Buy | +1,000 | $5.23 | $5.23K | 180,580 |
| Sandeep Nijhawan Director | Sep 11, 2024 | Sale | −7,000 | $5.72 | $40.04K | 15,537 |
| Kyle Teamey Director | Aug 30, 2024 | Buy | +142 | $6.73 | $956 | 25,227 |
| Michael R. Niggli Director | Aug 29, 2024 | Option exercise | +11,852 | $6.88 | $81.54K | 77,312 |
| Anthony Rabb Chief Financial Officer | Aug 20, 2024 | Tax withholding | −1,886 | $8.19 | $15.45K | 73,509 |
| Anthony Rabb Chief Financial Officer | May 20, 2024 | Tax withholding | −1,886 | $12.15 | $22.91K | 75,395 |
| Sandeep Nijhawan Director | May 17, 2024 | Award | +202,702 | – | – | 338,075 |
| Raffi Garabedian Director | May 17, 2024 | Award | +202,702 | – | – | 392,429 |
| Harry Quarls Director | May 17, 2024 | Award | +202,702 | – | – | 626,158 |
| Rich Hossfeld Director | May 17, 2024 | Award | +202,702 | – | – | 215,202 |
| Kyle Teamey Director | May 17, 2024 | Award | +202,702 | – | – | 376,311 |
| Alexi Wellman Director | May 17, 2024 | Award | +202,702 | – | – | 380,633 |
| Michael R. Niggli Director | May 17, 2024 | Award | +202,702 | – | – | 951,896 |
| Rich Hossfeld Director | May 15, 2024 | Returned to company | −135,373 | – | – | 12,500 |
| Kyle Teamey Director | May 14, 2024 | Buy | +1,250 | $0.79 | $988 | 173,609 |
| Harry Quarls Director | May 10, 2024 | Buy | +57,310 | $0.79 | $45.27K | 423,456 |
| Harry Quarls Director | May 9, 2024 | Buy | +42,690 | $0.84 | $35.86K | 366,146 |
| Rich Hossfeld Director | Mar 15, 2024 | Buy | +2,300 | $0.73 | $1.68K | 147,873 |
| Rich Hossfeld Director | Mar 15, 2024 | Buy | +200 | $0.73 | $146 | 145,573 |
| Eric P. Dresselhuys Chief Executive Officer, Director | Mar 7, 2024 | Award | +622,771 | – | – | 2,718,239 |
| Anthony Rabb Chief Financial Officer | Feb 20, 2024 | Tax withholding | −1,044 | $13.67 | $14.27K | 77,281 |
| Anthony Rabb Chief Financial Officer | Feb 15, 2024 | Award | +550,000 | – | – | 1,242,468 |
| Anthony Rabb Chief Financial Officer | Nov 20, 2023 | Tax withholding | −4,298 | $17.55 | $75.43K | 78,325 |
| Harry Quarls Director | Nov 16, 2023 | Buy | +5,489 | $1.25 | $6.86K | 323,456 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| A. Rabb Anthony Officer | Sep 25, 2025 | 3,878 | $6.67K | Sep 25, 2025 | Restricted Stock |
| A. Rabb Anthony Officer | Sep 17, 2025 | 3,000 | $4.83K | Sep 17, 2025 | Restricted Stock |
| A. Rabb Anthony Officer | Sep 10, 2025 | 4,774 | $6.79K | Sep 10, 2025 | Restricted Stock |
| A. Rabb Anthony Officer | Sep 4, 2025 | 5,001 | $6.38K | Sep 4, 2025 | Restricted Stock |
| A. Rabb Anthony Officer | Aug 29, 2025 | 5,062 | $7.54K | Aug 29, 2025 | Restricted Stock |