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. filed a Form S-3 shelf registration to register common stock, preferred stock, debt securities, warrants, units and rights for sale from time to time after effectiveness. The prospectus states offerings will be made pursuant to prospectus supplements and proceeds will be used for general corporate purposes. The company reported 339,459,021 shares of Common Stock outstanding as of March 31, 2026 and disclosed a Nasdaq closing price of $8.10 per share on May 12, 2026.
Eos Energy Enterprises appointed Alessandro Lagi as its new Chief Financial Officer, effective June 8, 2026, replacing interim CFO Nathan Kroeker, who remains Chief Commercial Officer. Lagi, 50, brings senior finance experience from Johnson Controls, Baker Hughes and BHGE across global and regional roles.
Lagi’s employment agreement provides a $470,000 annual base salary, a target annual bonus equal to 100% of base salary, and an initial $2,000,000 grant of time-vesting restricted stock units vesting over three years. He is also eligible for long-term incentives targeting $1,000,000 annually, plus relocation and car allowances and defined severance and non-compete protections.
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.
Eos Energy Enterprises reported 2025 operating progress, citing $114 million in revenue and approximately $701 million of contracted backlog. The company booked more than $240 million of new orders in the fourth quarter and ended the year with about $625 million in cash following refinancing and capital raises.
The CEO acknowledged an execution shortfall late in the fourth quarter when a transition to continuous automated battery module manufacturing reduced output below plan; management says bottlenecks were identified, fixes are underway, and factory capacity will roughly double in 2026 as a second battery line ramps.
Eos Energy Enterprises is asking stockholders at its virtual annual meeting on June 3, 2026 to approve several key items. Proposals include electing three Class III directors, ratifying Deloitte & Touche LLP as auditor for 2026, and a non-binding advisory vote on executive pay.
The company is also seeking approval to amend its charter to increase authorized common stock from 600,000,000 to 800,000,000 shares and to amend its Second Amended and Restated 2020 Incentive Plan, which governs long-term equity awards. The proxy details a largely independent, classified board with three preferred-stock-appointed directors, extensive committee structure, and expanded use of performance-based RSUs and relative total shareholder return metrics in executive compensation. CEO Joe Mastrangelo’s 2025 total compensation was $4,854,452, heavily weighted toward equity awards tied to multi-year performance.
Eos Energy Enterprises released preliminary results indicating first quarter 2026 revenue of $56–$57 million, driven by record shipments and improved manufacturing performance. The company reported a 17% quarter-over-quarter increase in shipments, alongside higher battery and bipolar output, reflecting better throughput and process stability.
Eos highlighted operational initiatives in supplier quality, lean processes, and equipment optimization, as well as progress on its second battery production line, which is expected to begin initial production by the end of the second quarter. New senior hires in sales and project delivery are intended to help convert growing demand into completed projects.
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.