ESS Tech, Inc. (GWH) reported that on July 16, 2026, it amended the sales agreement governing its previously established “at-the-market” equity offering program. The ATM program allows the company to sell up to $75 million of shares of its common stock from time to time through designated sales agents, depending on market conditions and the company’s instructions. The amendment changes the banking group involved in the offering. ESS Tech terminated the original sales agreement as to BMO Capital Markets Corp., Canaccord Genuity LLC, Needham & Company, LLC and Stifel, Nicolaus & Company, Incorporated. The original agreement had been entered into on November 13, 2025, with those firms and Yorkville Ives & Co., LLC, formerly Yorkville Securities, LLC. Under the amended arrangement, Yorkville Ives remains involved, and Roth Capital Partners, LLC has been added as an additional sales agent. Roth also replaces Canaccord as the “qualified independent underwriter” for the offering under FINRA Rule 5121. That role is relevant because of potential conflicts or relationships involving participating financial firms; a qualified independent underwriter provides an additional regulatory safeguard in certain offerings. The filing does not report a completed sale of shares, a fixed number of shares issued, a sale price, or proceeds received on July 16. Instead, it reports a change to the structure and participants of ESS Tech’s existing ATM facility. Any future sales under the amended agreement would be made through the ATM program, typically into the public market at prevailing market prices, subject to the terms of the agreement and applicable securities laws. ESS Tech also said it filed an amendment to the prospectus supplement originally filed on December 11, 2025, to reflect the changes to the ATM program. The company emphasized that the Form 8-K itself is not an offer to sell or a solicitation to buy shares and that sales may not occur in jurisdictions where they would be unlawful without proper registration or qualification. The filing additionally disclosed related-party and relationship context involving Yorkville. YA II PN, Ltd., an affiliate of Yorkville Ives, was a party to ESS Tech’s Standby Equity Purchase Agreement, and an affiliate of Yorkville Ives is the lender under a promissory note between the company and YA II PN, Ltd. ESS Tech also noted that Yorkville Ives, Roth and/or their affiliates may in the future provide commercial banking, financial advisory or investment banking services to the company for customary fees and commissions. The reported Form 8-K items were Item 1.01, Entry into a Material Definitive Agreement, and Item 9.01, Financial Statements and Exhibits. The principal exhibit is Amendment No. 1 to the Sales Agreement, dated July 16, 2026, among ESS Tech, Yorkville Ives & Co., LLC and Roth Capital Partners, LLC.