GWHT on OTC

ESS Tech, Inc.

American miscellaneous electrical machinery company based in Wilsonville. Summary from the record

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Last updated Oct 19, 2026.

Overview

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  • TickerGWHT on OTC1
  • IndustryMiscellaneous Electrical Machinery, Equipment & Supplies1
  • HeadquartersWilsonville, Oregon1
  • Incorporated inDE2
  • Business address26440 Sw Parkway Ave., Bldg. 83, Wilsonville, Or 970702
  • Filer categoryNon-accelerated filer, Smaller reporting company2
  • Legal formCorporation

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ESS Tech, Inc. (“Legacy ESS”) was founded in 2011 and became a publicly traded company through a business combination with a special purpose acquisition company named ACON S2 Acquisition Corp. (“STWO”) which changed its name to ESS Tech, Inc. upon closing (the “Business Combination”). As a result of the Business Combination, Legacy ESS survived and became a wholly owned subsidiary of ESS Tech, Inc. On March 31, 2024, Legacy ESS merged with ESS Tech, Inc. leaving ESS Tech, Inc. as the successor legal entity.3 From its latest annual report

Financials

From the company’s reports to the SEC. Every number links to the filing it came from.

Key numbers, fiscal 2025

-1748.1%Gross margin4
-3626.5%Operating margin4
-4007.6%Net margin4
-74.9%Revenue growth, 20254
-736.1%Return on equity4
-$53.7MFree cash flow4

What sells

Revenue by product, business segment and region, as the company reports it to the SEC.

Products and services

Product brought in 65% of the revenue ESS Tech, Inc. broke down this way in fiscal 2025.

  1. Product$1.0M465%down 78% from 2024
  2. Other Product Or Service$444.0K428%down 68% from 2024
  3. Service$108.0K47%down 18% from 2024
Products and services by year
Products and services20242025
Product$4.8M$1.0M
Other Product Or Service$1.4M$444.0K
Service$132.0K$108.0K

Where the money goes

Where each dollar of revenue went, fiscal 2025

  • Cost of revenue78¢$29.3M
  • Research and development22¢$8.3M

Out of $1.6M in revenue.4 The company lost money this year.

Financial statements

Revenue56784$1.6M in 2025
0$2.0M$4.0M$6.0M$8.0M2020: $0$020202021: $0$020212022: $894.0K$894.0K20222023: $7.5M$7.5M2023+743%2024: $6.3M$6.3M2024−17%2025: $1.6M$1.6M2025−75%
Gross profit784-$27.7M in 2025
-$60.0M-$40.0M-$20.0M0$20.0M2022: $894.0K$894.0K20222023: -$13.0M-$13.0M20232024: -$45.4M-$45.4M2024+250%2025: -$27.7M-$27.7M2025−39%
Operating income56784-$57.4M in 2025+230% since 2020
-$150.0M-$100.0M-$50.0M02020: -$17.4M-$17.4M20202021: -$60.6M-$60.6M2021+248%2022: -$105.5M-$105.5M2022+74%2023: -$85.9M-$85.9M2023−19%2024: -$89.8M-$89.8M2024+5%2025: -$57.4M-$57.4M2025−36%
Net income56784-$63.4M in 2025+109% since 2020
-$600.0M-$400.0M-$200.0M02020: -$30.4M-$30.4M20202021: -$477.1M-$477.1M2021+1468%2022: -$78.0M-$78.0M2022−84%2023: -$77.6M-$77.6M2023−1%2024: -$86.2M-$86.2M2024+11%2025: -$63.4M-$63.4M2025−26%

Every line of the income statement as filed: the last 2 fiscal years, latest first.4

Period ending2025-12-312024-12-31
Total revenue$1.6M$6.3M
Cost of revenue$29.3M$51.7M
Gross loss-$27.7M-$45.4M
Research and development$8.3M$11.8M
Sales and marketing$3.8M$9.2M
General and administrative$17.6M$23.5M
Total operating expenses$29.7M$44.4M
Loss from operations-$57.4M-$89.8M
Interest (expense) income, net-$5.5M$3.6M
Gain on revaluation of common stock warrant liabilities$229.0K$115.0K
Other expense, net-$807.0K-$113.0K
Total other (expense) income, net-$6.0M$3.6M
Net loss to common stockholders-$63.4M-$86.2M
Comprehensive loss to common stockholders-$63.4M-$86.2M
Net loss per share - basic (in USD per share)-$4.34-$7.32
Net loss per share - diluted (in USD per share)-$4.34-$7.32
Weighted average shares used in per share calculation - basic (in shares)14.6M shares11.8M shares
Weighted average shares used in per share calculation - diluted (in shares)14.6M shares11.8M shares

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Leadership

Who has led ESS Tech, Inc., and when. Pick a name to see everywhere that person has worked.

Chief executive

  1. Adam M. Kriger2020–2021
  2. Eric P. Dresselhuys2021–2024
  3. Kelly F. Goodman2025–2026
  4. Drew P. Buckley2026–now

President

  1. Craig E. Evans2021–2023

Chief financial officer

  1. Amir Moftakhar2021–2022
  2. Anthony Rabb2022–2025
  3. Kate Eileen Suhadolnik2025–now

Chief operating officer

  1. Jigish Dhirajlal Trivedi2025–now
2025
Board members and other officers (22)

Named in SEC Form D filings

People the company listed in its private-offering notices.

  • DirectorAlexi P Welman named Sep 26, 202337

Former names

  • ACON S2 Acquisition Corp.Jul 31, 2020 to Oct 8, 20212

Timeline

  1. Jan 29, 2026New chief executive Drew P. Buckley becomes CEO11
  2. Feb 14, 2025New chief executive Kelly F. Goodman becomes CEO12
  3. Oct 18, 2021New chief executive Eric P. Dresselhuys becomes CEO13
  4. Sep 16, 2020New chief executive Adam M. Kriger becomes CEO14

Filings

393 filings to the SEC since October 2021: 6 annual reports, 17 quarterly reports, 74 major events, 150 insider forms, 31 large holders, 2 private raises, 113 other. The latest 20:

  1. Oct 5, 20268-K EDGAR
  2. Sep 30, 20268-K EDGAR
  3. Sep 24, 2026DEF 14A EDGAR
  4. Sep 16, 2026EFFECT EDGAR
  5. Sep 16, 2026424B3 EDGAR
  6. Sep 15, 2026PRE 14A EDGAR
  7. Sep 8, 2026S-3 EDGAR
  8. Sep 3, 20268-K EDGAR
  9. Aug 24, 20264 EDGAR
  10. Aug 24, 20264 EDGAR
  11. Aug 21, 20268-K EDGAR
  12. Aug 21, 2026424B5 EDGAR
  13. Aug 14, 2026SCHEDULE 13G/A EDGAR
  14. Aug 13, 2026SCHEDULE 13G/A EDGAR
  15. Aug 11, 202610-Q EDGAR
  16. Aug 11, 20268-K EDGAR
  17. Aug 6, 20268-K EDGAR
  18. Jul 17, 20268-K EDGAR
  19. Jul 17, 2026424B5 EDGAR
  20. Jul 2, 202625-NSE EDGAR

The 393 filings since October 2021 can be filtered by form type and year here when JavaScript is on.

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Insider trades

41 open-market trades by officers, directors and large owners since October 2021: 20 buys and 21 sales. Grants, option exercises and gifts are left out.

DateWhoTradeSharesPriceValueFiling
Aug 21, 2026Suhadolnik Kate EileenChief Financial OfficerSale3,927$0.40$1.6KForm 4
Aug 21, 2026Goodman Kelly F.SEE REMARKSSale5,400$0.40$2.2KForm 4
Jun 4, 2026Buckley Drew PCEOBuy25,000$1.03$25.8KForm 4
May 22, 2026Suhadolnik Kate EileenChief Financial OfficerSale1,922$0.93$1.8KForm 4
May 22, 2026Goodman Kelly F.SEE REMARKSSale2,751$0.93$2.6KForm 4
May 21, 2026Suhadolnik Kate EileenChief Financial OfficerSale1,735$0.92$1.6KForm 4
May 21, 2026Goodman Kelly F.SEE REMARKSSale2,482$0.92$2.3KForm 4
Feb 20, 2026Suhadolnik Kate EileenChief Financial OfficerSale741$1.54$1.1KForm 4
Feb 20, 2026Goodman Kelly F.SEE REMARKSSale2,269$1.54$3.5KForm 4
Nov 18, 2024Dresselhuys Eric P.Chief Executive OfficerBuy1,000$5.23$5.2KForm 4
Sep 11, 2024Nijhawan SandeepDirectorSale7,000$5.72$40.0KForm 4
Aug 30, 2024Teamey KyleDirectorBuy142$6.73$956Form 4
May 14, 2024Teamey KyleDirectorBuy1,250$0.79$988Form 4
May 10, 2024Quarls HarryDirectorBuy57,310$0.79$45.3KForm 4
May 9, 2024Quarls HarryDirectorBuy42,690$0.84$35.9KForm 4
Mar 15, 2024Hossfeld RichDirectorBuy2,500$0.73$1.8KForm 4
Nov 16, 2023Quarls HarryDirectorBuy5,489$1.25$6.9KForm 4
Nov 15, 2023Quarls HarryDirectorBuy67,118$1.35$90.6KForm 4
Nov 14, 2023Quarls HarryDirectorBuy80,579$1.27$102.3KForm 4
Nov 13, 2023Quarls HarryDirectorBuy46,814$1.10$51.5KForm 4

All 41 trades can be filtered by person here when JavaScript is on.

From Forms 4 filed with the SEC.

Major holders

Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.

Money raised

Private offerings the company reported to the SEC on Form D.

  1. Jul 10, 2025Raised $900,000 in a private offering of debt Form D: 7 investors so far Form D
  2. Sep 21, 2023Raised $27.5 million in a private offering of equity Form D: 1 investor so far Form D

Held by these funds

The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 45. Change is in shares since the quarter before.

FundSharesValueShare of the fundChange
Softbank Group Corp.2,396,980$2.3M0.0%No change
Alyeska Investment Group, L.P.1,400,000$1.3M0.0%No change
Vanguard Capital Management LLC638,920$607.0K0.0%+4,200
UBS Group AG602,607$572.5K0.0%+453,328
Arosa Capital Management LP550,000$522.5K0.5%−360,000
Heights Capital Management, Inc548,621$521.2K0.1%−414,874
Shay Capital LLC210,146$199.6K0.0%+30,146
Geode Capital Management, LLC210,037$199.5K0.0%−13,524
BlackRock, Inc.133,867$127.2K0.0%+83,497
Vanguard Fiduciary Trust Co129,877$123.4K0.0%+60,475
Green Alpha Advisors, LLC115,775$110.0K0.1%+1,195
Pathstone Holdings, LLC88,982$85.1K0.0%+1,534
Fmr LLC52,485$49.9K0.0%−4
Northern Trust Corp47,532$45.2K0.0%+16,193
State Street Corp46,975$44.6K0.0%No change
PKS Advisory Services, LLC24,000$22.8K0.0%New
Jpmorgan Chase & Co19,896$19.6K0.0%−11,640
Bridgeway Capital Management, LLC20,000$19.0K0.0%No change
Primoris Wealth Advisors, LLC16,500$15.7K0.0%No change
Renaissance Technologies LLC12,700$12.1K0.0%New
Osaic Holdings, Inc.8,359$7.9K0.0%+2,120
Morgan Stanley4,561$4.3K0.0%−27
Golden State Wealth Management, LLC2,707$2.6K0.0%No change
Rockefeller Capital Management L.P.2,024$1.9K0.0%No change
Vanguard Global Advisers, LLC1,314$1.2K0.0%No change

13F reports cover disclosed long positions in U.S. stocks only.

Sources

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