Welcome to our dedicated page for Eos Energy Enterprises SEC filings (Ticker: EOSE), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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 Chief Executive Officer Joe Mastrangelo reported routine equity compensation activity. On 2026-07-05, he exercised derivative awards for 254,304 shares of common stock at a stated price of $0.0000 per share, converting restricted stock units into stock under the company’s 2020 Incentive Plan.
On 2026-07-06, 121,245 shares of common stock were withheld to satisfy tax obligations related to the vested RSU award. This tax-withholding disposition is not an open‑market sale. After these transactions, Mastrangelo directly owned 1,773,406 shares of Eos Energy common stock.
EOSE filer submitted a Form 144 reporting an insider sale and a scheduled RSU vesting. The filing lists a sale of 35,289 common shares on 06/30/2026 with an aggregate value of $206,673.56. The filing also identifies Common shares tied to an RSU Vesting event dated 07/06/2026 with the quantity shown as 79,309.
Cerberus-affiliated investors updated their ownership and plans in Eos Energy Enterprises. The group led by CCM Denali Equity reports beneficial ownership of 159,587,654 shares of common stock, representing about 31.1% of the company, based on 353,142,655 shares outstanding as of July 1, 2026.
The amendment describes an amended and restated binding term sheet for a new joint venture with Eos and an affiliate of Hudson Bay Capital. At closing, a Cerberus affiliate is expected to contribute $100 million for Class A-2 units, while Hudson Bay contributes $50 million for Class C units, alongside a targeted $150 million rights offering by Eos to existing stockholders to fund Class B units.
Cerberus and Hudson Bay are also expected to receive long-dated warrants to buy 20,017,772 and 10,008,886 Eos shares, respectively, at an exercise price of $5.481 per share, plus an exchange right allowing Hudson Bay’s JV units to be swapped into Eos shares at set price levels or the final rights offering price.
Eos Energy Enterprises is commencing a rights offering for up to 27,367,171 Units at $5.481 per Unit. Each Unit includes one share of common stock plus 0.4388 of a warrant with a $5.481 exercise price per share. Rights are granted to holders of common stock and specified warrants as of the July 1, 2026 Record Date, are expected to trade on Nasdaq under “EOSER” starting July 6, 2026, and expire at 5:00 p.m. New York City time on July 21, 2026. Investors who fully use their basic rights may request additional Units through an over-subscription privilege. The company states it intends to use any net proceeds to fund its planned investment in Frontier Power USA Parent, LLC, and completion of the offering remains subject to joint venture-related conditions and board discretion.
Eos Energy Enterprises, Inc. is conducting a rights offering distributing subscription Rights to purchase up to 27,367,171 Units at a subscription price of $5.481 per Unit, representing aggregate offering value of approximately $150 million, subject to closing conditions. Each Unit includes one new share of common stock and 0.4388 of a warrant exercisable solely via cashless exercise at $5.481 per whole share.
The Rights will be distributed to holders of common stock and certain participating warrants as of the Record Date of 5:00 p.m. on July 1, 2026, will be exercisable beginning July 2, 2026, and are currently expected to expire at 5:00 p.m. on July 21, 2026, unless extended. The offering is conditioned on, among other items, the substantially concurrent closing of the JV Transaction and other customary closing conditions; the company may waive conditions, extend, amend or terminate the Rights Offering in its sole discretion. The company intends to use net proceeds, if any, to fund its contribution to Frontier in exchange for Frontier Class B Units at $1.00 per unit pursuant to the JV Agreement.
EOS Energy Enterprises closed a previously announced registered direct offering with Hudson Bay Master Fund Ltd., issuing 13,683,634 shares of common stock and 6,004,378 accompanying warrants.
Each share was sold together with 0.4388 of a warrant at an aggregate offering price of $5.481, and each warrant allows the holder to buy one share at $5.481 per share. The warrants may be exercised for cash or on a cashless basis, carry customary anti-dilution adjustments, and will expire on the tenth anniversary of issuance. The securities and the shares underlying the warrants were offered under an effective Form S‑3 shelf registration, supported by a June 30, 2026 preliminary and final prospectus supplement.
Eos Energy Enterprises is conducting a registered direct offering of common stock and detachable warrants. The company is offering 13,683,634 shares of common stock together with 6,004,378 warrants, each warrant exercisable for one share at $5.481 per share. The aggregate offering price per unit (one share plus accompanying 0.4388 warrant) is $5.481, producing estimated gross proceeds of approximately $75.0 million. The company intends to use the proceeds to acquire Class B Units of Frontier at $1.00 per unit as part of a joint venture transaction with CCM and HBC. The warrants are exercisable immediately, expire ten years after issuance, and may be redeemable by the company after the five-year anniversary if the stock meets specified price conditions.
The summary figures assume no exercise of the offered warrants. Shares outstanding after the offering are shown as 353,142,655 shares (based on 339,459,021 shares outstanding as of March 31, 2026 before this offering). Closing is expected on or about July 1, 2026.
Eos Energy Enterprises Chief Accounting Officer Sumeet Puri reported routine equity activity tied to restricted stock units. On June 26, 2026, he exercised 17,545 RSUs, converting them into the same number of common shares at $0.00 per share, and his RSU balance became 35,389 units.
On June 30, 2026, he then sold 8,823 common shares at a weighted average price of $5.86, in multiple trades between $5.68 and $6.12. According to the filing, these sales were executed automatically under a Rule 10b5-1 trading plan adopted on September 12, 2025 to cover estimated tax withholding obligations related to RSU vesting.
After these transactions, Puri directly owns 173,112 shares of common stock, in addition to his remaining RSUs. The activity reflects compensation-related vesting and tax coverage rather than a discretionary change in his overall stake.
Eos Energy Enterprises Chief Administration Officer Michelle Buczkowski reported a mix of equity award vesting and related share sales. On June 26, 2026, 22,938 restricted stock units converted into the same number of common shares at $0.00 per share under a company incentive plan.
On June 30, 2026, she sold 11,469 common shares in open-market transactions at a weighted-average price of $5.87 per share, effected automatically under a pre-arranged Rule 10b5-1 trading plan to cover estimated tax-withholding obligations tied to the vesting. After these transactions, she directly holds 59,242 common shares and 45,876 restricted stock units.
Eos Energy Enterprises Chief Legal Officer Michael W. Silberman reported routine equity compensation activity and a related tax sale. On June 26, 2026, he exercised 29,996 Restricted Stock Units, receiving the same number of common shares at a conversion price of $0.00 per share. On June 30, 2026, he sold 14,998 common shares in an open-market transaction at a weighted average price of $5.87 per share, with individual trades ranging from $5.68 to $6.18. According to the disclosure, this sale was executed automatically under a Rule 10b5-1 trading plan adopted on September 15, 2025 to cover estimated tax withholding obligations tied to RSU vesting. After these transactions, Silberman directly holds 298,277 common shares and 59,991 RSUs that will vest in three equal annual installments under the company’s 2020 Incentive Plan.