secwatch / observer
GWH ESS Tech, Inc.
CIK 0001819438 50 ready 8-Ks latest July 16, 2026, 6:14 PM ET RSS · JSON
Activity: NORMAL 3 filings / 30d vs 2 baseline Risk accumulating: repeated leadership change (2), compliance/delisting (1)
Ready 8-Ks 50
Latest filing July 16, 2026, 6:14 PM ET
Top materiality 0.95
Event mix earnings ×15 · other_material ×13 · leadership ×10
Sentiment 8 pos · 12 neg · 30 neu
Latest earnings reported 2026-Q1
Executive change recent →
SHENANIGAN SCORE 3 / 7 see the board

Recent 8-K filings for GWH

Executive changes

Departed

Rich Hossfeld

Director
GWH · ESS Tech, Inc.
Effective
2026-06-12
Successor
Raffi Garabedian
Filed
June 18, 2026, 5:27 PM ET
On June 12, 2026, Rich Hossfeld notified ESS Tech, Inc. (the “Company”) that he is resigning from the board of directors (the “Board”) of the Company and Audit Committee of the Board (the “Audit Committee”), effective as of June 12, 2026.
Appointed

Raffi Garabedian

Audit Committee Member
GWH · ESS Tech, Inc.
Effective
2026-06-12
Filed
June 18, 2026, 5:27 PM ET
Raffi Garabedian will replace Mr. Hossfeld on the Audit Committee, effective as of June 12, 2026.
Departed

Eric Dresselhuys

Chief Executive Officer
GWH · ESS Tech, Inc.
Effective
2025-02-13
Successor
Kelly F. Goodman
Filed
February 14, 2025, 6:59 PM ET
On February 13, 2025, Eric Dresselhuys, Chief Executive Officer of ESS Tech, Inc. (the “Company”), separated from the Company and resigned as a member of Company’s Board of Directors (the “Board”).
Appointed (interim)

Kelly F. Goodman

Interim Chief Executive Officer and Principal Executive Officer
GWH · ESS Tech, Inc.
Effective
2025-02-13
Filed
February 14, 2025, 6:59 PM ET
In connection with Mr. Dresselhuys’ departure, Kelly F. Goodman, the Company’s current Vice President of Legal and Corporate Secretary, will be appointed as the interim Chief Executive Officer and Principal Executive Officer of the Company, effective February 13, 2025, until her successor is duly appointed and qualified.
Appointed

Harry Quarls

Chairman of the Board
GWH · ESS Tech, Inc.
Effective
2023-08-28
Filed
August 29, 2023, 7:59 PM ET
the Board appointed Harry Quarls as a member of the Board and as Chairman of the Board.
Role change

Michael R. Niggli

Founding Chairman
GWH · ESS Tech, Inc.
Effective
2023-08-28
Successor
Harry Quarls
Filed
August 29, 2023, 7:59 PM ET
Michael R. Niggli resigned as Chairman of the Board and the Board appointed Harry Quarls as a member of the Board and as Chairman of the Board.
Departed

Craig Evans

President
GWH · ESS Tech, Inc.
Effective
2023-05-19
Filed
May 22, 2023, 7:59 PM ET
On May 17, 2023, in connection with the end of his term with the Company’s board of directors ("Board"), Craig Evans, Co-Founder and President of ESS Tech, Inc. (the “Company”) tendered his resignation as President to be effective as of the commencement of the 2023 annual meeting of stockholders (the "Annual Meeting") held on May 19, 2023.
Departed

Claudia Gast

Director
GWH · ESS Tech, Inc.
Effective
2022-11-25
Filed
November 25, 2022, 6:59 PM ET
On November 25, 2022, Claudia Gast resigned as a member of the Board of Directors
Departed

Amir Moftakhar

Chief Financial Officer
GWH · ESS Tech, Inc.
Effective
2022-11-04
Successor
Anthony Rabb
Filed
November 3, 2022, 7:59 PM ET
On November 3, 2022, Amir Moftakhar, Chief Financial Officer of the Company tendered his resignation as Chief Financial Officer to be effective as of November 4, 2022.
Appointed

Anthony Rabb

Chief Financial Officer
GWH · ESS Tech, Inc.
Effective
2022-11-04
Filed
November 3, 2022, 7:59 PM ET
On November 3, 2022, the Company announced the appointment of Anthony Rabb as Chief Financial Officer of the Company, effective November 4, 2022
Departed (interim)

Jeff Bodner

Chief Accounting Officer
GWH · ESS Tech, Inc.
Effective
2022-09-12
Successor
Amir Moftakhar
Filed
August 26, 2022, 7:59 PM ET
On August 24, 2022, Jeff Bodner, Chief Accounting Officer of ESS Tech, Inc. (the “Company”) tendered his resignation from the Company, to be effective as of September 12, 2022.
Appointed (interim)

Amir Moftakhar

principal accounting officer (interim)
GWH · ESS Tech, Inc.
Effective
2022-09-12
Filed
August 26, 2022, 7:59 PM ET
In connection with Mr. Bodner’s resignation, Amir Moftakhar, the Company’s Chief Financial Officer, will assume the role and responsibilities of principal accounting officer on an interim basis as of the effective date of Mr. Bodner’s resignation.

Earnings & guidance

2026-Q1 EPS reported -$0.54 filing →

Materiality & sentiment trend

Max materiality 0.95 · Median 0.60 · Most common event earnings

8 positive 12 negative 30 neutral

source · GWH on sec.gov