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EOSE submitted a Form 144 notice reporting a proposed sale of 30,000 common shares on 05/28/2026 arising from a stock option exercise. The filing also records recently reported dispositions by Marian Walters of 7,681 shares on 05/19/2026 and 22,319 shares on 05/20/2026.
Eos Energy Enterprises director Marian Walters exercised stock options and sold the resulting shares. Walters exercised options for 22,319 shares of common stock at $1.18 per share, then sold 22,319 shares in an open-market transaction at a weighted average price of $7.20 per share.
After these transactions, Walters directly holds 158,445 shares of common stock and 65,018 stock options. An additional 5,000 shares are held indirectly through the D. and M. Walters Family Trust dated July 6, 2020.
Eos Energy Enterprises director Jeff McNeil reported routine equity compensation activity involving restricted stock units. He exercised 23,111 RSUs into an equal number of shares of common stock at a price of $0.00 per share, increasing his directly held common stock.
Following the transaction, McNeil directly owns 122,290 shares of common stock. A separate entry shows an additional 227,272 common shares held indirectly by Jeff and Nanci McNeil as trustees of the 2022 Jeff McNeil and Nanci McNeil Charitable Remainder Unitrust.
Eos Energy Enterprises director Jeffrey S. Bornstein reported compensation-related updates involving restricted stock units (RSUs) and common stock. He exercised 30,815 RSUs tied to an equal number of common shares, but a footnote explains these RSUs were settled in cash at $6.88 per unit, so no shares were actually issued or disposed of. After these entries, he reports direct ownership of 134,248 common shares and an additional 1,500 shares held indirectly by his spouse. The filing reflects routine equity compensation accounting rather than open-market buying or selling.
Eos Energy Enterprises director Alexander Dimitrief reported compensation-related activity involving restricted stock units (RSUs). On May 19, 2026, 26,963 RSUs granted on May 19, 2025 were cash settled at $6.88 per unit. According to the disclosure, no common shares were actually issued or disposed. Following these entries, he reports 251,399 common shares held directly and 10,000 common shares held indirectly by his spouse, indicating a routine equity compensation settlement without open-market buying or selling.
Eos Energy Enterprises director Gregory S. Nixon reported compensation-related activity involving restricted stock units. On May 19, 2026, previously granted RSUs were cash settled at $6.88 per unit, the closing price of the company’s common stock that day. Footnote disclosure states no shares were actually issued to Nixon and he did not dispose of any shares in connection with this settlement. Following these transactions, he holds 13,867 shares of common stock directly.
Eos Energy Enterprises director David Urban exercised restricted stock units into common shares. On May 19, 2026, he converted 23,111 restricted stock units into 23,111 shares of common stock at a price of $0.00 per share. Following this transaction, he directly owns 85,582 shares of common stock, and the exercised RSUs now show a balance of zero in this filing. The activity reflects a derivative exercise with no reported open-market buying or selling.
Cerberus-affiliated investors report a 32% beneficial stake in Eos Energy Enterprises and outline a new joint venture and financing plan. The reporting persons may be deemed to own 159,587,654 shares of common stock, including shares issuable from existing warrants and preferred stock, out of 339,514,027 shares outstanding as of May 11, 2026.
Eos and CCM Frontier signed a binding term sheet to form a joint venture, Frontier Power USA Parent, LLC. CCM Frontier is expected to contribute 50,000,001 Class A-1 units and an Initial Class A-2 Contribution of $100 million for 100,000,000 Class A-2 units, plus receive long-dated warrants for Eos common stock. Eos plans to fund its JV contribution through a Rights Offering targeting $150 million, issuing common shares and additional warrants to participating stockholders. JV governance gives CCM Frontier four of seven manager seats initially, with Eos representation tied to ownership thresholds and transfer restrictions applying for three years after closing.
Eos Energy Enterprises Inc ownership filing shows Vanguard Capital Management reports beneficial ownership of 17,239,505 shares of Common Stock, representing 5.07% of the class. The filing states Vanguard has sole dispositive power over 17,239,505 shares and sole voting power for 2,404,068 shares. The filing is signed on 04/29/2026 and cites aggregated holdings across Vanguard business units per SEC Release No. 34-39538.
Cerberus Capital Management II and its affiliates report a 32% beneficial stake in Eos Energy Enterprises, Inc. common stock. They may be deemed to beneficially own 159,587,654 shares, including common shares and shares issuable from a warrant and multiple preferred stock series.
The position reflects an antidilution adjustment that increased the common shares issuable from Series B-4 Preferred Stock. Eos also satisfied final performance milestones under a Credit Agreement on October 31, 2025, so no additional securities are currently contemplated there. In March 2026, Cerberus affiliate executive Nathaniel Fick joined Eos’s board as a Class III director and was appointed to the Nominating and Corporate Governance Committee.