Eos Energy Enterprises, Inc. filings document the regulatory record of a Nasdaq-listed manufacturer of zinc-based battery energy storage systems. Recent Form 8-K reports disclose operating results and preliminary financial information, manufacturing and capacity updates, amendments to a U.S. Department of Energy loan guarantee agreement, senior convertible notes, and other capital-structure matters tied to the company’s funding plan.
Proxy and governance filings cover annual meeting matters, board elections, committee assignments, executive compensation, equity awards, indemnification arrangements, and stockholder voting procedures. The filing record also includes executive employment agreements and director appointments, giving formal disclosure around leadership structure, compensation terms, common stock registration, and material agreements.
Eos Energy Enterprises, Inc. has filed a preliminary prospectus supplement for a registered direct offering of common stock together with detachable warrants. The company states net offering proceeds are intended to be contributed to a newly formed joint venture, Frontier, in exchange for Class B Units at $1.00 per unit.
The supplement discloses concurrent grants of 20,017,772 warrants to CCM and 10,008,886 warrants to HBC exercisable at $5.481 per share as partial consideration for those investors’ commitments to the joint venture. Shares outstanding were 339,459,021 as of March 31, 2026. The prospectus supplement includes detailed terms for the offered warrants, cashless exercise mechanics and anti-dilution adjustments.
Eos Energy Enterprises outlined a major financing and joint venture plan centered on a new Frontier Power JV with Cerberus and Hudson Bay affiliates. CCM Frontier is expected to receive 50,000,001 Class A-1 units and invest $100 million for 100,000,000 Class A-2 units, while HBC plans to invest $50 million for 50,000,000 Class C units.
The Company intends to fund its Class B investment through a rights offering targeting $150 million, with units priced at $5.481 and including one common share plus 0.4388 of a warrant. CCM Frontier and HBC are also expected to receive long-dated warrants, and HBC’s Class C units carry exchange rights into common shares. The Department of Energy and CCM lenders have provided limited consents, but completion of the structure remains subject to multiple closing conditions.
Eos Energy Enterprises CEO Joe Mastrangelo exercised stock options and increased his direct share ownership. He exercised options for 200,000 shares of common stock at an exercise price of $1.34 per share and retained the underlying shares. To cover tax obligations on this compensation event, 116,646 shares of common stock were disposed of at a reference price of $6.06 per share, a non-market tax-withholding mechanism rather than an open-market sale. After these transactions, he directly holds 1,570,480 shares of common stock. A footnote explains the options were Non-Qualified Stock Options granted in June 2022, fully vested in September 2022, and that he chose to keep the net shares to support a long-term equity position, including in connection with any potential future equity or rights offerings by the company.
Bornstein Jeffrey S reported acquisition or exercise transactions in this Form 4 filing.
Eos Energy Enterprises director Jeffrey S. Bornstein received a grant of restricted stock units. On the reported date, he was awarded 24,289 RSUs, each representing a contingent right to receive one share of Eos Energy common stock.
The RSUs were granted at no cash cost and will vest on the earlier of the first anniversary of the grant date or immediately before the company’s next annual shareholders meeting following the grant. After this grant, Bornstein holds 24,289 RSUs directly.
Nigro Joseph reported acquisition or exercise transactions in this Form 4 filing.
Eos Energy Enterprises director Joseph Nigro was granted 24,289 restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of common stock and will settle in cash or common stock.
The RSUs vest on the earlier of the first anniversary of the grant date or immediately before the company’s next annual shareholders meeting following the grant date. After this grant, Nigro holds 24,289 RSUs directly.
McNeil Jeff reported acquisition or exercise transactions in this Form 4 filing.
Eos Energy Enterprises director Jeff McNeil received a grant of 18,217 restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest on the earlier of the first anniversary of the grant date or immediately before the company’s next annual shareholders meeting.
Demby Claude reported acquisition or exercise transactions in this Form 4 filing.
Eos Energy Enterprises director Claude Demby received a new equity award in the form of restricted stock units. On June 5, 2026, he was granted 18,217 RSUs, each representing a contingent right to receive one share of common stock. The award was granted at a price of $0.00 per unit as part of compensation, not an open-market purchase. These RSUs will vest on the earlier of the first anniversary of the grant date or immediately before the company’s next annual shareholders meeting, and may settle in cash or common stock. Following this grant, Demby holds 18,217 RSUs directly.
Walters Marian reported acquisition or exercise transactions in this Form 4 filing.
Eos Energy Enterprises director Marian Walters received a grant of 21,253 restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of common stock. The RSUs vest on the earlier of the first anniversary of the June 5, 2026 grant date or immediately before the company’s next annual shareholders meeting.
Urban David reported acquisition or exercise transactions in this Form 4 filing.
Eos Energy Enterprises director David Urban reported receiving a grant of restricted stock units as equity-based compensation. He was awarded 18,217 RSUs, each representing a contingent right to receive one share of common stock or a cash payment. These RSUs will vest on the earlier of the first anniversary of the grant date or immediately before the company’s next annual shareholders meeting following the grant date. After this grant, Urban’s reported derivative holdings from this award total 18,217 RSUs tied to common stock.
Nixon Gregory S. reported acquisition or exercise transactions in this Form 4 filing.
Eos Energy Enterprises director Nixon Gregory S. received a grant of 18,217 restricted stock units. Each RSU represents a right to one share of common stock and will settle in cash or common stock. The RSUs vest on the earlier of one year from grant or immediately before the company’s next annual shareholder meeting. Following this award, he holds 18,217 RSUs directly.