EOS ENERGY ENTERPRISES, INC. 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): November 5, 2025 (Exact name of registrant as specified in its charter) | Delaware | 001-39291 | 84-4290188 | | --- | --- | --- | | (State or other jurisdiction | (Commission | (IRS Employer | | of incorporation) | File Number) | Identification No.) | 3920 Park Aven ...