wk-20260507
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d)
of the Securities Exchange Act of 1934
Date of report (Date of earliest event reported): May 7, 2026
ESS TECH, INC.
(Exact Name of Registrant as Specified in Charter)
| Delaware | 001-39525 | 98-1550150 | ||||||||||||
(State or other jurisdiction of incorporation) | (Commission File Number) | (I.R.S. Employer Identification Number) | ||||||||||||
26440 SW Parkway Ave., Bldg. 83 Wilsonville, Oregon | 97070 | |||||||
| (Address of principal executive offices) | (Zip code) | |||||||
(855) 423-9920
(Registrant’s telephone number, including area code)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the Registrant under any of the following provisions:
| ☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) | ||||
| ☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) | ||||
| ☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) | ||||
| ☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) | ||||
Securities registered pursuant to Section 12(b) of the Act:
| Title of each class | Trading Symbol(s) | Name of each exchange on which registered | ||||||||||||
| Common Stock, $0.0001 par value per share | GWH | The New York Stock Exchange | ||||||||||||
| Warrants, each fifteen warrants exercisable for one share of common stock at an exercise price of $172.50 | GWH.W | The New York Stock Exchange | ||||||||||||
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2).
Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Item 2.02 Results of Operations and Financial Condition.
On May 7, 2026, ESS Tech, Inc. (the “Company”) issued a press release announcing financial results for the quarter ended March 31, 2026. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference.
The information furnished in this Item 2.02 and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.
Item 9.01 Financial Statements and Exhibits
(d) Exhibits
Exhibit No. | ||||||||
| 99.1 | Press release, dated May 7, 2026 | |||||||
| 104 | Cover page interactive data file | |||||||
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized.
Dated: May 7, 2026
| ESS TECH, INC. | |||||
| By: | /s/ Kate Suhadolnik | ||||
| Name: | Kate Suhadolnik | ||||
| Title: | Chief Financial Officer | ||||