Every Form 4 that ESS Tech, Inc. (GWH) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow GWH and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full GWH filings page.
ESS Tech, Inc. (GWH) reported that its Chief Financial Officer, Kate Eileen Suhadolnik, executed a sale of 3,927 shares of common stock on 2026-08-21 at an average price of $0.4022 per share. According to the disclosure, these shares were sold to cover tax withholding obligations arising from the vesting of restricted stock units (RSUs). After this transaction, she directly holds 156,830 shares of ESS Tech common stock, a portion of which are RSUs representing a contingent right to receive shares.
ESS Tech, Inc. (GWH) insider Kelly F. Goodman, Chief Strategy Officer and General Counsel, reported a sale of 5,400 shares of Common Stock on 2026-08-21 at $0.4022 per share. The shares were sold to cover tax withholding obligations related to vesting restricted stock units, and 205,220 shares remain held directly, including RSUs that each represent a contingent right to one share of Common Stock.
ESS Tech, Inc. CEO Drew P. Buckley reported an open-market purchase of 25,000 shares of Common Stock. The shares were bought on June 4, 2026 at a weighted average price of $1.0264 per share across multiple trades priced between $1.0073 and $1.0299. Following this transaction, Buckley directly holds 25,000 shares of ESS Tech common stock.
WELLMAN ALEXI reported acquisition or exercise transactions in this Form 4 filing.
ESS Tech, Inc. director Alexi Wellman reported receiving a grant of 13,513 shares of Common Stock in the form of restricted stock units, with no cash paid per share. Following this grant, he holds 52,399 shares directly. These RSUs vest on the earlier of May 29, 2027 or the day before the next annual stockholder meeting, and settlement has been deferred until within 30 days after his separation from the company or a qualifying change of control.
Quarls Harry reported acquisition or exercise transactions in this Form 4 filing.
ESS Tech, Inc. director Harry Quarls received an equity award of 13,513 restricted stock units (RSUs) representing common shares. These RSUs vest on the earlier of May 29, 2027 or the day before the next annual stockholders’ meeting, and settlement is deferred until separation from service or a qualifying change of control. Following this grant, Quarls holds 68,769 shares and RSUs directly.
Nijhawan Sandeep reported acquisition or exercise transactions in this Form 4 filing.
ESS Tech, Inc. director Sandeep Nijhawan reported receiving 13,513 shares of Common Stock in the form of restricted stock units (RSUs) as a compensation award. The RSUs vest on the earlier of May 29, 2027 or the day before the next annual stockholder meeting. Each RSU represents a right to receive one share, and settlement has been deferred to within 30 days of either his separation from the company or a qualifying change of control under the company’s plan. Following this award, Nijhawan directly holds 42,563 shares of ESS Tech common stock.
Hossfeld Rich reported acquisition or exercise transactions in this Form 4 filing.
ESS Tech, Inc. director Rich Hossfeld reported receiving a grant of 13,513 restricted stock units (RSUs) of the company’s common stock on May 29, 2026. These RSUs vest on the earlier of May 29, 2027 or the day before the next annual stockholder meeting. Hossfeld has elected to defer settlement so the shares will be delivered within 30 days of either his separation from the company or a qualifying change of control. Following this award, his directly held position reported in this filing is 41,372 shares.
Garabedian Raffi reported acquisition or exercise transactions in this Form 4 filing.
ESS Tech, Inc. director Raffi Garabedian received a grant of 13,513 restricted stock units (RSUs) of Common Stock as equity compensation. Each RSU represents a right to receive one share of Common Stock once it vests and is settled.
The RSUs vest on the earlier of May 29, 2027 or the day before ESS Tech’s next annual stockholder meeting. Garabedian has elected to defer settlement so shares will be delivered within 30 days after either his separation from the company, or a qualifying change of control under the company’s plan and Section 409A rules. Following this award, he is reported as beneficially owning 53,185 shares, including RSUs.
ESS Tech, Inc. Chief Financial Officer Kate Eileen Suhadolnik reported small open-market sales of company stock primarily to cover tax obligations. On two days, she sold a total of 3,657 shares of ESS Tech common stock at weighted average prices around $0.92–$0.93 per share.
The footnotes state these shares were sold to cover tax withholding obligations tied to the vesting of restricted stock units. After these transactions, she still directly holds 160,757 shares of ESS Tech common stock, indicating she maintains a substantial equity position in the company.
ESS Tech, Inc. officer Kelly F. Goodman reported two open-market sales of Common Stock that were made to cover tax withholding obligations tied to vesting restricted stock units. On May 21 and 22, 2026, Goodman sold a total of 5,233 shares at weighted average prices around $0.92–$0.93 per share. After these transactions, Goodman directly holds 210,620 shares of ESS Tech common stock.
ESS Tech, Inc. Chief Financial Officer Kate Eileen Suhadolnik reported an open-market sale of common stock. On February 20, 2026, she sold 741 shares of ESS Tech common stock at $1.54 per share.
According to the footnotes, these shares were sold specifically to cover tax withholding obligations related to the vesting of restricted stock units (RSUs). After this transaction, she directly owned 164,414 shares of ESS Tech common stock, and a portion of her holdings consists of RSUs, each representing a contingent right to receive one share of common stock.
ESS Tech, Inc. officer Kelly F. Goodman reported an open-market sale of Common Stock. On February 20, 2026, Goodman sold 2,269 shares at an average price of $1.54 per share to cover tax withholding obligations related to vesting restricted stock units. After this transaction, Goodman directly owned 215,853 shares of ESS Tech common stock.
ESS Tech, Inc. reported that its Chief Financial Officer, Kate Eileen Suhadolnik, received equity awards on February 13, 2026. She was granted 137,500 stock options with an exercise price of $0.00 per share and 137,500 shares of common stock represented by restricted stock units (RSUs).
Both the options and RSUs vest as to 1/16th on May 20, 2026, with an additional 1/16th vesting quarterly thereafter, so long as she remains a service provider to ESS Tech through each vesting date. Following the RSU grant, her directly owned common stock holdings increased to 165,155 shares.
ESS Tech, Inc. reported that company officer Kelly F. Goodman received equity awards on February 13, 2026. Goodman was granted stock options for 137,500 shares of common stock at an exercise price of $0.00 per share and now holds stock options for 137,500 shares in total. Goodman also received 137,500 shares of common stock in the form of restricted stock units (RSUs), bringing direct common share holdings to 218,122 shares after the award. The RSUs vest as to 1/16 on May 20, 2026 and 1/16 quarterly thereafter, and the options follow the same vesting schedule, in each case contingent on Goodman remaining a service provider. Each RSU represents a contingent right to receive one share of ESS Tech common stock.
ESS Tech reported a new stock option grant to its CEO and director, Drew P. Buckley. On January 28, 2026, he received options to purchase 550,000 shares of common stock at an exercise price of $1.68 per share, held as direct ownership.
These options expire on January 28, 2036. According to the vesting schedule, 25% of the shares will vest on February 20, 2027, and the remaining shares will vest in 1/16 increments each quarter, as long as he continues as a service provider through each vesting date.
ESS Tech, Inc. (GWH) reported an insider equity transaction by its Interim CFO on 11/20/2025. The filing shows that 1,299 shares of common stock were withheld by the company when restricted stock units (RSUs) vested in order to cover tax withholding obligations at a price of $2.4 per share. After this withholding, the reporting person beneficially owned 27,655 shares of ESS Tech common stock, including RSUs, each representing a contingent right to receive one share upon vesting.
ESS Tech, Inc. (GWH) interim CEO reports Form 4 activity involving restricted stock units (RSUs). On 11/20/2025, 4,513 shares of common stock were withheld by the company upon RSU vesting to cover tax withholding obligations, using a transaction code "F" at a price of $2.40 per share. After this tax-related withholding, the reporting person directly beneficially owns 80,622 shares, a portion of which are RSUs, with each RSU representing a contingent right to receive one share of ESS Tech common stock.
ESS Tech, Inc. (GWH) reported a Form 4 showing a director received 13,513 restricted stock units (RSUs) on 10/13/2025 at a stated price of $0. Following this grant, the director beneficially owns 90,825 shares on a direct basis.
The RSUs vest on the earlier of May 17, 2025 or the day prior to the next annual meeting of stockholders. Settlement has been deferred to a date within 30 days of the earlier of the director’s separation of service (under Section 409A) or a qualifying change of control as defined in the company’s plan.
ESS Tech (GWH) reported an insider equity grant on Form 4. A company director acquired 13,513 restricted stock units (RSUs) on 10/13/2025 at $0. Following the grant, the reporting person beneficially owned 38,886 shares, held directly.
The RSUs vest on the earlier of May 17, 2025 or the day prior to the next annual meeting. Settlement is deferred to within 30 days of separation from service or a qualifying change of control under Section 409A. Each RSU represents one share of common stock.
ESS Tech (GWH) reported a Form 4 indicating a director acquired 13,513 shares of Common Stock on 10/13/2025 at a price of $0, represented by restricted stock units (RSUs). Each RSU corresponds to one share.
The RSUs vest on the earlier of May 17, 2025 or the day prior to the next annual meeting of stockholders. Settlement is deferred to within 30 days of the earlier of the director’s separation from service or a qualifying change of control under Section 409A. Ownership is reported as direct.
ESS Tech (GWH) reported an insider equity award. A director acquired 13,513 restricted stock units (RSUs) on 10/13/2025 at a stated price of $0, bringing direct beneficial ownership to 29,050 shares after the transaction.
The RSUs vest on the earlier of May 17, 2025 or the day prior to the next annual stockholder meeting. Settlement is deferred to within 30 days of the earlier of the director’s separation from service or a qualifying change of control under Section 409A. Each RSU represents the right to receive one share of common stock.
ESS Tech (GWH) reported an insider equity award on a Form 4. A director acquired 13,513 shares of Common Stock on 10/13/2025, reported as restricted stock units (RSUs) at $0. Following the transaction, beneficial ownership is reported at 39,672.
The RSUs vest on the earlier of May 17, 2025 or the day prior to the next annual meeting of stockholders. The reporting person elected to defer settlement of these RSUs to within 30 days of separation of service or a qualifying change of control under Section 409A. The filing indicates direct ownership and was filed by one reporting person in the capacity of Director.
ESS Tech (GWH) reported a Form 4 showing a director acquired 13,513 restricted stock units on 10/13/2025 at $0. Following the transaction, the reporting person beneficially owns 27,859 shares directly.
The RSUs vest on the earlier of May 17, 2025 or the day prior to the next annual meeting of stockholders. Settlement has been deferred to within 30 days of the earlier of separation from service or a qualifying change of control under Section 409A.
ESS Tech, Inc. (GWH) director reported an acquisition of 13,513 restricted stock units (RSUs) on 10/13/2025 at a price of $0, according to a Form 4. Following the transaction, the reporting person beneficially owns 38,740 shares directly.
Each RSU represents the right to receive one share of common stock. The RSUs vest on the earlier of May 17, 2025 or the day prior to the next annual meeting of stockholders. The reporting person elected to defer settlement to a date within 30 days of the earlier of separation of service or a qualifying change of control under Section 409A.