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.
The Eos Energy Enterprises, Inc. (NASDAQ: EOSE) SEC filings page on Stock Titan provides direct access to the company’s regulatory disclosures, alongside AI-generated summaries that help explain complex documents. Eos is an American energy company that designs, manufactures, and provides zinc-based battery energy storage systems (BESS) using its Znyth™ technology for long-duration applications in utility, microgrid, commercial, and industrial settings.
Through this page, readers can review Eos’s annual reports on Form 10-K and quarterly reports on Form 10-Q, which describe its zinc-based BESS business, long-duration storage focus, and risk factors. These filings typically include discussions of manufacturing plans, commercial pipeline, and the operational context for products such as Z3™ systems and the DawnOS™ platform. Stock Titan’s AI tools highlight key sections, helping users quickly locate information on segment performance, liquidity, and risk disclosures.
Current reports on Form 8-K are especially relevant for tracking Eos’s capital structure and major events. Recent 8-K filings detail the issuance of 1.75% Convertible Senior Notes due 2031, amendments to a secured credit and guaranty agreement with lenders arranged by Cerberus US Servicing, LLC, a warrant agreement with the U.S. Department of Energy, and funding advances under a DOE-guaranteed loan facility with the Federal Financing Bank. AI summaries surface the main terms of these instruments, including conversion features, redemption conditions, and covenant changes.
Investors can also use this page to follow proxy materials such as the company’s definitive proxy statement for a special meeting, which addressed share issuance approvals related to certain notes. In addition, insider-related equity and warrant information disclosed in 8-Ks and other forms can be reviewed here, while AI assistance points out items tied to potential dilution, voting rights, and governance.
Filings are updated in near real time as they are posted to EDGAR, allowing users to monitor new 10-K, 10-Q, 8-K, proxy, and related documents for EOSE. The combination of primary source filings and AI-driven explanations helps readers understand how Eos finances its long-duration energy storage business, manages debt and equity instruments, and discloses material events under U.S. securities laws.
Eos Energy Enterprises director Nathaniel Fick has filed an SEC Form 3, which is an initial statement of beneficial ownership. This filing establishes his status as a reporting insider of the company but, in the provided data, does not show any share purchases, sales, or option exercises.
EOS Energy Enterprises, Inc. entered into a new employment agreement with its Chief Administration Officer, Michelle Buczkowski, replacing her prior offer letter. The agreement sets an annual base salary of $385,000 and makes her eligible for a year-end target bonus equal to 75% of base salary under the short-term incentive plan.
She will also be eligible for annual long-term incentive grants. If her employment is involuntarily terminated without Cause or with Good Reason, and she signs a release, she is entitled to continued base salary for 12 months, certain bonus payments, and vesting of equity awards scheduled to vest over the following twelve months, subject to performance goals. The agreement includes perpetual confidentiality and intellectual property provisions, plus non-competition and non-solicitation covenants lasting 12 months after termination.
Eos Energy Enterprises filed a preliminary Proxy Statement announcing a virtual Annual Meeting of Stockholders to be held June 3, 2026 at 10:00 a.m. Eastern. The proxy seeks votes to elect three Class III directors, ratify Deloitte as auditor, approve executive compensation (advisory), increase authorized common stock from 600,000,000 to 800,000,000 shares, and amend the 2020 Incentive Plan.
The Record Date for voting is April 13, 2026. The filing discloses director nominees, board composition including three Preferred Directors appointed by the holder of Investor Preferred Stock, 2025 director and executive compensation tables, and audit fees paid to Deloitte in 2025.
Eos Energy Enterprises Inc filing an amendment to a Schedule 13G/A reports that The Vanguard Group beneficially owns 0 shares of Common Stock as of the amendment, reflecting an internal realignment completed January 12, 2026 that disaggregated certain subsidiaries' holdings from The Vanguard Group, Inc.
The filing states Vanguard has no voting or dispositive power over EOSE common shares and confirms ownership is five percent or less.
Eos Energy Enterprises appointed Nathaniel (Nate) Fick, age 48, to its Board of Directors as an independent Class III director, effective March 24, 2026. He will serve until the 2026 annual meeting and, if elected, for a three-year term.
Fick joins the Nominating and Corporate Governance Committee and expands the Board to eleven directors. He will not receive board compensation under the policies of his employer. Eos will enter into a standard director indemnification agreement with him, covering certain legal expenses tied to his board service.
The company highlighted Fick’s background in national security, cybersecurity, artificial intelligence, technology leadership, and infrastructure from roles at Cerberus Capital Management, prior government service as U.S. Ambassador-at-Large for Cyberspace & Digital Policy, and earlier leadership positions in cybersecurity and the U.S. Marine Corps.
Eos Energy Enterprises director David Urban bought additional company stock in the open market. On March 9, 2026, he purchased 16,250 shares of common stock at a weighted average price of $6.16 per share, with individual trade prices ranging from $6.15 to $6.16. Following this purchase, he directly owns 62,471 shares.
Eos Energy Enterprises Chief Executive Officer Joe Mastrangelo reported an open-market purchase of 23,900 shares of common stock at a price of $6.58 per share. Following this transaction, he directly owns a total of 1,487,126 shares of Eos Energy Enterprises common stock.
Eos Energy Enterprises director Alexander Dimitrief bought additional shares of the company’s common stock in the open market. On March 2, 2026, he purchased 15,000 shares at a price of $6.04 per share, increasing his direct holdings to 235,221 shares.
The filing also notes an additional 10,000 shares of common stock held indirectly by his spouse, reported as indirect ownership. This Form 4 highlights continued equity ownership by a board member through a meaningful open-market purchase.
Eos Energy Enterprises Chief Executive Officer Joe Mastrangelo purchased 60,000 shares of common stock in the open market. The transactions occurred on March 2, 2026 at a weighted average price of $5.75 per share, with individual trade prices ranging from $5.74 to $5.75. Following these purchases, he directly owns 1,463,226 common shares.
Eos Energy Enterprises describes a rapidly growing but still unprofitable zinc‑based battery storage business focused on long‑duration grid and data‑center applications. The company posted a net loss of $969.6 million for the year ended December 31, 2025, up from $685.9 million in 2024, and continues to warn that it expects further losses as it scales manufacturing and invests in its Z3 platform and software.
Eos highlights differentiated, non‑flammable U.S.-made zinc batteries, new products such as the Z3 module, DawnOS controls and Indensity high‑density storage architecture, and strong policy tailwinds from the Inflation Reduction Act and the One Big Beautiful Bill Act. To expand capacity to 8 GWh, it has a DOE‑guaranteed loan facility of up to $303.5 million and had drawn $90.9 million across Tranche 1 by December 31, 2025. The company employed 787 full‑time staff, had an aggregate public float value of about $1.283 billion as of June 30, 2025, and 339,434,259 shares outstanding as of February 24, 2026, while emphasizing significant business, financing, execution, supply‑chain and competitive risks.