IPO registrations (S-1, F-1) · Registrants
ESS Tech, Inc.
- SEC CIK
- 1819438 · filings on EDGAR ↗
- Former names
- ACON S2 Acquisition Corp. (2020–2021)
- Registration
- Form S-1, first filed 2020-08-31, last 2022-03-04; 4 initial registrations, 3 amendments
- Outcome
- Final prospectus filed 2020-09-18; declared effective 2020-09-16; withdrawal requested 2022-02-08
- Industry (SIC)
- Miscellaneous Electrical Machinery, Equipment & Supplies 3690
- Incorporated in
- DE
- Business address
- 26440 SW PARKWAY AVE., BLDG. 83, Wilsonville, OR 97070
- EIN
- 98-1550150
- Ticker
- GWHT (OTC)
- EDGAR entity type
- operating
- Insiders and CEO pay
- ESS Tech, Inc. on the corporate pages
Offering terms
- Final price
- $10.00 per share (424B4 filed 2020-09-18, an initial public offering)
- Shares sold
- 25,000,000
- Gross proceeds
- $250,000,000 before underwriting discounts and any over-allotment option
- Listing
- Nasdaq under the symbol STWOU
- Lead underwriters
- Deutsche Bank
- Syndicate
- Cowen; Stifel; Loop Capital Markets
Read from the cover pages of the filings listed under “Prospectus pages read” below; check the document for anything that matters.
On this site
- Business registration: ESS TECH, INC, EXACT (EIN (EXACT, as the state registration reports it))
- Business registration: ESS TECH, INC. Fuzzy (name and state)
- Form 5500 plan sponsor: ESS TECH, INC EXACT (EIN (EXACT))
- Federal award recipient: ESS TECH, INC Fuzzy (name and state)
- Form D issuer: ESS Tech, Inc. EXACT (CIK (EXACT))
- Lobbying client: ESS TECH, INC. Fuzzy (name and state)
- Lobbying registrant: ESS TECH, INC. Fuzzy (name and state)
- SEC filer: ACON S2 Acquisition Corp. EXACT (CIK (EXACT))
- Person page: Michael R Niggli Fuzzy (officer, director or 10% owner on the company's Forms 3, 4 and 5 (Director))
Filings 17
| Filed | Form | What it is | Name as filed | EDGAR |
|---|---|---|---|---|
| 2020-08-31 | S-1 | S-1 (registration) | ACON S2 Acquisition Corp. | 0001193125-20-236408 ↗ |
| 2020-09-09 | S-1/A | S-1/A (amendment) | ACON S2 Acquisition Corp. | 0001193125-20-241467 ↗ |
| 2020-09-11 | S-1/A | S-1/A (amendment) | ACON S2 Acquisition Corp. | 0001193125-20-244274 ↗ |
| 2020-09-15 | S-1/A | S-1/A (amendment) | ACON S2 Acquisition Corp. | 0001193125-20-245853 ↗ |
| 2020-09-16 | EFFECT | EFFECT (declared effective) | ACON S2 Acquisition Corp. | 9999999995-20-002471 ↗ |
| 2020-09-18 | 424B4 | 424B4 (final prospectus) | ACON S2 Acquisition Corp. | 0001193125-20-249225 ↗ |
| 2021-09-14 | EFFECT | EFFECT (declared effective) | ACON S2 Acquisition Corp. | 9999999995-21-003504 ↗ |
| 2021-11-03 | S-1 | S-1 (registration) | ESS Tech, Inc. | 0001193125-21-317289 ↗ |
| 2021-11-10 | EFFECT | EFFECT (declared effective) | ESS Tech, Inc. | 9999999995-21-004303 ↗ |
| 2021-12-13 | EFFECT | EFFECT (declared effective) | ESS Tech, Inc. | 9999999995-21-004665 ↗ |
| 2021-12-27 | S-1 | S-1 (registration) | ESS Tech, Inc. | 0001193125-21-367045 ↗ |
| 2022-02-08 | RW | RW (withdrawal request) | ESS Tech, Inc. | 0001193125-22-031040 ↗ |
| 2022-03-04 | S-1 | S-1 (registration) | ESS Tech, Inc. | 0001628280-22-005167 ↗ |
| 2022-03-16 | EFFECT | EFFECT (declared effective) | ESS Tech, Inc. | 9999999995-22-000657 ↗ |
| 2022-11-17 | EFFECT | EFFECT (declared effective) | ESS Tech, Inc. | 9999999995-22-003324 ↗ |
| 2022-11-17 | EFFECT | EFFECT (declared effective) | ESS Tech, Inc. | 9999999995-22-003331 ↗ |
| 2023-12-14 | EFFECT | EFFECT (declared effective) | ESS Tech, Inc. | 9999999995-23-003623 ↗ |
Prospectus pages read 2
| Filed | Form | Read as | Range | Price | Shares | Proceeds | Listing | Underwriters | What was found | Document |
|---|---|---|---|---|---|---|---|---|---|---|
| 2020-09-15 | S-1/A | registration statement | $1.50 | 7,187,500 | $10,781,250 | 0 | primary document; price sentence, shares headline, proceeds computed | document ↗ | ||
| 2020-09-18 | 424B4 | final prospectus | $10.00 | 25,000,000 | $250,000,000 | Nasdaq STWOU | 4 | primary document; price sentence, shares headline, proceeds table, cover names 4 | document ↗ |
Officers, directors and large holders Forms 3, 4 and 5
| Insider | Role | Title | Filings | Years | On this site |
|---|---|---|---|---|---|
| ACON S2 Management, LLC | TenPercentOwner | 3 | 2020–2021 | ||
| Goddard Janie | Director | 2 | 2020–2021 | ||
| Jinich Daniel | Director | 2 | 2020–2021 | ||
| Kriger Adam M. | Director,Officer | Chief Executive Officer | 2 | 2020–2021 | |
| Levy Sarah Kirshbaum | Director | 2 | 2020–2021 | ||
| Roush John A | Director,Officer | Chief Financial Officer | 2 | 2020–2021 | |
| Shadrick-Wilson Ryan D | Director | 2 | 2020–2021 | ||
| GINNS JONATHAN J | Director | 2 | 2020–2021 | ||
| Bodner Jeff | Officer | Chief Accounting Officer | 5 | 2021–2022 | |
| BREAKTHROUGH ENERGY INVESTMENTS LLC | TenPercentOwner | 2 | 2021 | ||
| Breakthrough Energy Ventures, LLC | TenPercentOwner | 2 | 2021 | ||
| Dresselhuys Eric P. | Director,Officer | Chief Executive Officer | 14 | 2021–2024 | |
| Evans Craig E | Director,Officer | President | 12 | 2021–2023 | |
| Garabedian Raffi | Director | 7 | 2021–2026 | ||
| Hossfeld Rich | Director | 7 | 2021–2026 | ||
| Moftakhar Amir | Officer | Chief Financial Officer | 8 | 2021–2022 | |
| NIGGLI MICHAEL R | Director | 13 | 2021–2025 | person page Fuzzy | |
| SOFTBANK GROUP CORP | Director,TenPercentOwner | 2 | 2021 | ||
| Song Julia | Officer | Chief Technology Officer | 9 | 2021–2022 | |
| Speakman Shirley | Director | 1 | 2021 | ||
| Teamey Kyle | Director | 10 | 2021–2025 | ||
| WELLMAN ALEXI | Director | 7 | 2021–2026 | ||
| Wilson Daryl C | Director | 3 | 2021–2022 | ||
| Gast Claudia | Director | 3 | 2022 | ||
| Rabb Anthony | Officer | Chief Financial Officer | 8 | 2022–2025 | |
| Nijhawan Sandeep | Director | 6 | 2023–2026 | ||
| Quarls Harry | Director | 11 | 2023–2026 | ||
| HONEYWELL INTERNATIONAL INC | TenPercentOwner | 1 | 2023 | ||
| Goodman Kelly F. | Officer | Interim CEO; SEE REMARKS | 10 | 2025–2026 | |
| Suhadolnik Kate Eileen | Officer | Chief Financial Officer; Interim CFO | 7 | 2025–2026 | |
| Trivedi Jigish Dhirajlal | Officer | COO | 2 | 2025 | |
| Buckley Drew P | Director,Officer | CEO | 3 | 2026 |
Everyone who filed an insider report for this company, from the SEC’s Insider Transactions Data Sets (2006 on). Person pages are matched by name and state only.
Private offerings before or after (Form D)
| First filed | Issuer | Industry | Offering | Sold | Investors | Filings |
|---|---|---|---|---|---|---|
| 2025-07-23 | ESS Tech, Inc. | Manufacturing | $900,000 | $900,000 | 7 | 1 |
| 2023-09-26 | ESS Tech, Inc. | Commercial | $27,500,000 | $27,500,000 | 1 | 1 |
Data: SEC EDGAR. The quarterly full index (every S-1, S-1/A, F-1 and F-1/A since 1993, with the pricing prospectus, notice of effectiveness and withdrawal request of each registrant) and the company submissions data (SIC, state of incorporation, address, EIN, tickers, former names). Company details are what EDGAR holds today, not at the time of the filing.
Also on this site Fuzzy
| Record | Name as filed | Where | Dataset | Matched by |
|---|---|---|---|---|
| Business registration | ESS TECH, INC, | OR | State business registries | name and state |
| Business registration | ESS TECH, INC. | OR | State business registries | name and state |
| Plan sponsor | ESS TECH, INC | OR | Form 5500 (employee benefit plans) | EIN (EXACT) |
| Federal award recipient | ESS TECH, INC | OR | Federal spending (USAspending) | name and state |
| Form D issuer | ESS Tech, Inc. | OR | Form D private offerings | CIK (EXACT) |
| Lobbying client | ESS TECH, INC. | OR | Federal lobbying (LDA) | name and state |
| Lobbying registrant | ESS TECH, INC. | OR | Federal lobbying (LDA) | name and state |
| Patent assignee | ESS TECH, INC. | OR | Patents (USPTO) | name and state |
| SEC filer | ESS Tech, Inc. | SEC filers (EDGAR) | CIK (EXACT) | |
| Trademark owner | ESS Tech, Inc. | OR | Trademarks (USPTO) | name and state |
| Form 5500 plan sponsor | ESS TECH, INC | EIN (EXACT) | ||
| Person page | Michael R Niggli | People (Form 990 officers, directors and employees) | officer, director or 10% owner on the company's Forms 3, 4 and 5 (Director) |
Matched by an identifier (EIN, CIK, CRD), by name and state or city, or by street address; a shared name or address is not proof of the same person or organization. Every link says how it was made; how the cross-referencing works.
Others with the same interests
SIC industry Miscellaneous Electrical Machinery, Equipment & Supplies, OR first:
- Expion Energy, Inc. OR
- AETERNUM HEALTH, INC. OR
- GREEN ENERGY GLOBAL INC AZ
- Cyber Enviro-Tech, Inc. AZ
- NEWCOM INC CA
- Flux Power Holdings, Inc. CA
- ECO INNOVATION GROUP, INC. CA
- TurnOnGreen, Inc. CA
- Beam Global CA
- Celpad Inc CA
In other datasets, the same topic (Technology) in OR:
- Form D issuer: 13th Bridge Games Studio, Inc. (Form D private offerings)
- Lobbying client: AGILITY ROBOTICS, INC. (Federal lobbying (LDA))
Interests: Miscellaneous Electrical Machinery, Equipment & Supplies · Technology