• Live Feeds
    • Press Releases
    • Insider Trading
    • FDA Approvals
    • Analyst Ratings
    • Insider Trading
    • SEC filings
    • Market insights
  • Analyst Ratings
  • Alerts
  • Subscriptions
  • Settings
  • RSS Feeds
Quantisnow Logo
  • Live Feeds
    • Press Releases
    • Insider Trading
    • FDA Approvals
    • Analyst Ratings
    • Insider Trading
    • SEC filings
    • Market insights
  • Analyst Ratings
  • Alerts
  • Subscriptions
  • Settings
  • RSS Feeds
PublishGo to App
    Quantisnow Logo

    © 2026 quantisnow.com
    Democratizing insights since 2022

    Services
    Live news feedsRSS FeedsAlertsPublish with Us
    Company
    AboutQuantisnow PlusContactJobsAI superconnector for talent & startupsNEWLLM Arena
    Legal
    Terms of usePrivacy policyCookie policy

    SEC Form DEFA14A filed by Eos Energy Enterprises Inc.

    9/26/25 4:09:45 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous
    Get the next $EOSE alert in real time by email
    DEFA14A 1 eos2025defa14axpost92625.htm DEFA14A Document





    UNITED STATES
    SECURITIES AND EXCHANGE COMMISSION
    Washington, D.C. 20549 

    SCHEDULE 14A
    Proxy Statement Pursuant to Section 14(a) of the
    Securities Exchange Act of 1934
    (Amendment No.    )

    Filed by the Registrant ☒
    Filed by a party other than the Registrant ☐

    Check the appropriate box:
    ☐    Preliminary Proxy Statement
    ☐    Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
    ☐    Definitive Proxy Statement
    ☒    Definitive Additional Materials
    ☐    Soliciting Material Under §240.14a-12

    EOS ENERGY ENTERPRISES, INC.

    (Exact Name of Registrant as Specified in its Charter) 
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)

    Payment of Filing Fee (Check the appropriate box):
    ☒    No fee required.
    ☐    Fee paid previously with preliminary materials.
    ☐    Fee computed on table in exhibit required by Item 25 (b) per Exchange Act Rules 14a-6(i)(1) and 0-11.














    On September 26, 2025, Eos Energy Enterprises, Inc. (the “Company” or “Eos”) posted the following on X:

    Attention Eos Shareholders! Proxy voting is now open through Oct 16 & the BOD recommends voting FOR both proposals! Reach out to your broker for control numbers & visit www.proxyvote.com to have your voice heard. Join our Meeting virtually at www.virtualshareholdermeeting.com/EOSE2025SM
    Important Information and Where You Can Find It
    Certain information in this communication may be deemed to be solicitation material in respect of a vote of stockholders to approve the issuance of Company's common stock to the Affiliated Purchaser (as defined in the proxy statement) upon redemption or conversion of the Notes (as defined in the proxy statement) pursuant to the Indenture (as defined in the proxy statement) as supplemented by the First Supplemental Indenture (as defined in the proxy statement), for purposes of complying with the Nasdaq Listing Rules and to approve the adjournment of the Special Meeting to a later date or dates, if necessary or appropriate, to permit further solicitation of proxies in the event that there are insufficient votes for the approval of the Share Issuance Proposal (as defined in the proxy statement) or the absence of a quorum. In connection with the requisite stockholder approvals, Eos filed on September 2, 2025, a definitive proxy statement (the “Definitive Proxy Statement”), which is available at the SEC’s website (http://www.sec.gov) and has been sent to the stockholders of Eos, seeking certain approvals related to the issuance of Company's common stock upon redemption or conversion of certain notes.
    INVESTORS AND SECURITY HOLDERS OF EOS AND THEIR RESPECTIVE AFFILIATES ARE URGED TO READ, THE DEFINITIVE PROXY STATEMENT AND ANY OTHER RELEVANT DOCUMENTS FILED OR TO BE FILED WITH THE SEC IN CONNECTION WITH THE NOTES, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THOSE DOCUMENTS, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT EOS AND THE NOTES. Investors and security holders will be able to obtain a free copy of the proxy statement, as well as other relevant documents filed with the SEC containing information about Eos, without charge, at the SEC’s website (http://www.sec.gov). Copies of documents filed with the SEC can also be obtained, without charge, by directing a request to Investor Relations, Eos Energy Enterprises, Inc. at 862-207-7955 or email [email protected].
    Participants in the Solicitation of Proxies
    Eos and certain of its respective directors, executive officers and employees may be deemed under the rules of the SEC to be participants in the solicitation of proxies with respect to the requisite stockholder approvals related to Notes (as defined in the proxy statement). Information regarding Eos directors and officers is available in (i) its definitive proxy statement for the 2025 annual stockholders meeting, which was filed with the SEC on March 27, 2025, and (ii) its current reports on Form 8-K filed by Eos on March 26, 2025 and May 27, 2025. Other information regarding the participants in the solicitation of proxies in respect to the Notes (as defined in the proxy statement) and the description of their direct and indirect interests, as security holders or otherwise, is contained in the Definitive Proxy Statement and other relevant materials to be filed by Eos with the SEC. Free copies of these documents, when available, may be obtained as described in the preceding paragraph.
    Forward-Looking Statements
    Except for the historical information contained herein, the matters set forth in these communications are forward-looking statements within the meaning of the “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements include, but are not limited to, statements regarding the Company’s redemption of the Notes (as defined in the proxy statement) and the consequences for failure to obtain stockholder approval and statements that refer to outlook, projections, forecasts or other characterizations of future events or circumstances, including any underlying assumptions. The words “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intends,” “may,” “might,” “plan,” “possible,” “potential,” “predict,” “project,” “should,” “will,” “would” and similar expressions may identify forward-looking statements, but the absence of these words does not mean that a statement is not forward-looking. Forward-looking statements are based on the Company’s management’s beliefs, as well as assumptions made by, and information currently available to, them. Because such statements are based on expectations as to future financial and operating results and are not statements of fact, actual results may differ materially from those projected.
    2







    Factors which may cause actual results to differ materially from current expectations include, but are not limited to: changes adversely affecting the business in which the Company is engaged; the Company’s ability to forecast trends accurately; the Company’s ability to generate cash, service indebtedness and incur additional indebtedness; the Company’s ability to achieve the operational milestones on the delayed draw term loan; the Company’s ability to raise financing in the future; risks associated with the credit agreement with Cerberus, including risks of default, dilution of outstanding Common Stock, consequences for failure to meet milestones and contractual lockup of shares; ; the Company’s customers’ ability to secure project financing; the amount of final tax credits available to the Company’s customers or to Eos pursuant to the Inflation Reduction Act of 2022; the timing and availability of future funding under the U.S. Department of Energy Loan Programs Office loan facility; the Company’s ability to convert firm order backlog and pipeline to revenue; risks associated with security breaches in the Company’s information technology systems; risks related to legal proceedings or claims; risks associated with evolving energy policies in the United States and other countries and the potential costs of regulatory compliance; risks associated with changes to the U.S. trade environment; the Company’s ability to maintain the listing of the Company’s shares of common stock on NASDAQ; the Company’s ability to grow the Company’s business and manage growth profitably, maintain relationships with customers and suppliers and retain the Company’s management and key employees; risks related to the adverse changes in general economic conditions, including inflationary pressures and increased interest rates; risk from supply chain disruptions and other impacts of geopolitical conflict; changes in applicable laws or regulations; the possibility that Eos may be adversely affected by other economic, business, and/or competitive factors; other factors beyond the Company’s control; risks related to adverse changes in general economic conditions; and other risks and uncertainties.
    The forward-looking statements contained in these communications are also subject to additional risks, uncertainties, and factors, including those more fully described in the Company’s most recent filings with the SEC on, including the Company’s most recent Annual Report on Form 10-K and subsequent reports on Forms 10-Q and 8-K. Further information on potential risks that could affect actual results will be included in the subsequent periodic and current reports and other filings that the Company makes with the SEC from time to time. Moreover, the Company operates in a very competitive and rapidly changing environment, and new risks and uncertainties may emerge that could have an impact on the forward-looking statements contained in these communications.
    Forward-looking statements speak only as of the date they are made. Readers are cautioned not to put undue reliance on forward-looking statements, and, except as required by law, the Company assumes no obligation and does not intend to update or revise these forward-looking statements, whether as a result of new information, future events, or otherwise.
    3
    Get the next $EOSE alert in real time by email

    Crush Q1 2026 with the Best AI Superconnector

    Stay ahead of the competition with Standout.work - your AI-powered talent-to-startup matching platform.

    AI-Powered Inbox
    Context-aware email replies
    Strategic Decision Support
    Get Started with Standout.work

    Recent Analyst Ratings for
    $EOSE

    DatePrice TargetRatingAnalyst
    12/17/2025$16.00Neutral
    Analyst
    9/5/2025$6.50Hold
    Jefferies
    8/1/2025$5.50 → $6.00Hold
    TD Cowen
    2/20/2025$4.00 → $5.00Buy → Neutral
    ROTH MKM
    8/21/2024$6.00Buy
    Stifel
    9/5/2023Buy → Neutral
    Seaport Research Partners
    9/1/2023$10.00Neutral → Buy
    Guggenheim
    6/30/2023$3.00 → $4.00Buy → Neutral
    B. Riley Securities
    More analyst ratings

    $EOSE
    Insider Trading

    Insider transactions reveal critical sentiment about the company from key stakeholders. See them live in this feed.

    View All

    CCO and Interim CFO Kroeker Nathan converted options into 100,000 shares and sold $802,000 worth of shares (50,000 units at $16.04), increasing direct ownership by 8% to 662,512 units (SEC Form 4)

    4 - Eos Energy Enterprises, Inc. (0001805077) (Issuer)

    1/26/26 4:52:07 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    Chief Legal Officer Silberman Michael W converted options into 83,334 shares and sold $739,173 worth of shares (41,667 units at $17.74), increasing direct ownership by 17% to 283,279 units (SEC Form 4)

    4 - Eos Energy Enterprises, Inc. (0001805077) (Issuer)

    1/23/26 4:34:58 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    SEC Form 4 filed by Director Walters Marian

    4 - Eos Energy Enterprises, Inc. (0001805077) (Issuer)

    12/23/25 4:04:53 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    $EOSE
    Analyst Ratings

    Analyst ratings in real time. Analyst ratings have a very high impact on the underlying stock. See them live in this feed.

    View All

    Analyst initiated coverage on Eos Energy with a new price target

    Analyst initiated coverage of Eos Energy with a rating of Neutral and set a new price target of $16.00

    12/17/25 9:19:09 AM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    Jefferies initiated coverage on Eos Energy with a new price target

    Jefferies initiated coverage of Eos Energy with a rating of Hold and set a new price target of $6.50

    9/5/25 7:59:28 AM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    TD Cowen reiterated coverage on Eos Energy with a new price target

    TD Cowen reiterated coverage of Eos Energy with a rating of Hold and set a new price target of $6.00 from $5.50 previously

    8/1/25 8:20:42 AM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    $EOSE
    Press Releases

    Fastest customizable press release news feed in the world

    View All

    Eos Energy Enterprises Announces Date for Fourth Quarter and Full Year 2025 Financial Results and Conference Call

    EDISON, N.J., Feb. 11, 2026 (GLOBE NEWSWIRE) -- Eos Energy Enterprises, Inc. (NASDAQ:EOSE) ("Eos" or the "Company"), an American energy company and the leading innovator in designing, sourcing, manufacturing, and providing zinc-based battery energy storage systems (BESS) manufactured in the United States, today announced it will release its fourth quarter and full year 2025 financial results before the U.S. market opens on February 26, 2026. A conference call to discuss its results will take place the same morning at 8:30 a.m. Eastern Time. Eos partners with Say Technologies to allow retail and institutional shareholders to submit and vote on questions ahead of the earnings call. A select

    2/11/26 4:30:00 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    Eos Energy Announces Indensity™: A Breakthrough in Battery Energy Storage—Join the Launch Event Today at 8:30 a.m. ET

    PITTSBURGH, Pa., Jan. 14, 2026 (GLOBE NEWSWIRE) -- Eos Energy Enterprises, Inc. (NASDAQ:EOSE) ("Eos" or the "Company"), an American energy company and the leading innovator in designing, sourcing, manufacturing, and providing zinc-based battery energy storage systems (BESS), today announced the launch of Eos Indensity™—and invites you to experience it first during an unveiling event happening today at 8:30 a.m. ET. Register now and be part of the future of energy storage. Eos Indensity™ is a breakthrough architecture designed to transform how energy storage scales for the real world. It's engineered with Spatial Intelligence, an innovative system design framework developed by the team at

    1/14/26 7:00:00 AM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    Eos Energy Honors Outgoing Chair Russ Stidolph for Years of Leadership and Investment and Appoints Industry Veteran Joseph Nigro as Chair of the Board of Directors

    EDISON, N.J., Dec. 22, 2025 (GLOBE NEWSWIRE) -- Eos Energy Enterprises, Inc. (NASDAQ:EOSE) ("Eos" or the "Company") an American energy company and the leading innovator in designing, sourcing, manufacturing, and providing zinc-based battery energy storage systems (BESS) manufactured in the United States, today announced that Russ Stidolph, who has served as non-executive Chair since April 2018 and whose firm, AltEnergy, LLC, has been a lead investor in Eos for the past eleven years, has decided to step down from the Board of Directors, effective December 31, 2025, to focus his efforts, full time, on AltEnergy Acquisition Corp. The Board has appointed Joseph Nigro to succeed Stidolph as non

    12/22/25 4:36:01 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    $EOSE
    Insider Purchases

    Insider purchases reveal critical bullish sentiment about the company from key stakeholders. See them live in this feed.

    View All

    Director Dimitrief Alexander bought $5,685 worth of shares (3,000 units at $1.90), increasing direct ownership by 2% to 172,347 units (SEC Form 4)

    4 - Eos Energy Enterprises, Inc. (0001805077) (Issuer)

    8/19/24 4:04:56 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    Director Dimitrief Alexander bought $3,350 worth of shares (2,000 units at $1.68), increasing direct ownership by 1% to 169,347 units (SEC Form 4)

    4 - Eos Energy Enterprises, Inc. (0001805077) (Issuer)

    8/15/24 4:08:31 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    Chief Executive Officer Mastrangelo Joe bought $75,504 worth of shares (52,800 units at $1.43), increasing direct ownership by 6% to 909,793 units (SEC Form 4)

    4 - Eos Energy Enterprises, Inc. (0001805077) (Issuer)

    8/12/24 10:54:58 AM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    $EOSE
    SEC Filings

    View All

    SEC Form 144 filed by Eos Energy Enterprises Inc.

    144 - Eos Energy Enterprises, Inc. (0001805077) (Subject)

    1/26/26 4:05:19 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    Eos Energy Enterprises Inc. filed SEC Form 8-K: Leadership Update, Financial Statements and Exhibits

    8-K - Eos Energy Enterprises, Inc. (0001805077) (Filer)

    12/22/25 5:15:00 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    SEC Form 144 filed by Eos Energy Enterprises Inc.

    144 - Eos Energy Enterprises, Inc. (0001805077) (Subject)

    12/5/25 6:18:06 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    $EOSE
    Leadership Updates

    Live Leadership Updates

    View All

    Eos Energy Honors Outgoing Chair Russ Stidolph for Years of Leadership and Investment and Appoints Industry Veteran Joseph Nigro as Chair of the Board of Directors

    EDISON, N.J., Dec. 22, 2025 (GLOBE NEWSWIRE) -- Eos Energy Enterprises, Inc. (NASDAQ:EOSE) ("Eos" or the "Company") an American energy company and the leading innovator in designing, sourcing, manufacturing, and providing zinc-based battery energy storage systems (BESS) manufactured in the United States, today announced that Russ Stidolph, who has served as non-executive Chair since April 2018 and whose firm, AltEnergy, LLC, has been a lead investor in Eos for the past eleven years, has decided to step down from the Board of Directors, effective December 31, 2025, to focus his efforts, full time, on AltEnergy Acquisition Corp. The Board has appointed Joseph Nigro to succeed Stidolph as non

    12/22/25 4:36:01 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    Eos Energy Enterprises Appoints Industry Veteran John Mahaz as Chief Operating Officer to Drive Next Phase of Operational Growth in American-Made Energy Storage

    EDISON, N.J., Aug. 18, 2025 (GLOBE NEWSWIRE) -- Eos Energy Enterprises, Inc. (NASDAQ:EOSE) ("Eos" or the "Company"), an American energy company and the leading innovator in designing, sourcing, manufacturing, and providing zinc-based battery energy storage systems (BESS) manufactured in the United States, today announced the appointment of long-time operations leader, John Mahaz, as Chief Operating Officer (COO). Mahaz will lead the Company's operations, supply chain, and manufacturing strategy as Eos enters a critical phase of commercial scale-up. Mahaz joins Eos with more than three decades of experience in global manufacturing, operations, supply chain and business development from his

    8/18/25 8:00:00 AM ET
    $EOSE
    $JBL
    Industrial Machinery/Components
    Miscellaneous
    Electrical Products
    Technology

    Joseph Nigro Appointed to Eos Energy Enterprises Board of Directors

    EDISON, N.J., March 27, 2025 (GLOBE NEWSWIRE) -- Eos Energy Enterprises, Inc. (NASDAQ:EOSE) ("Eos" or the "Company"), America's leading innovator in designing, manufacturing, and providing zinc-based long duration energy storage systems sourced and manufactured in the United States, today announced that Joseph Nigro, former CFO of Exelon Corporation (NADSDAQ: EXC) and CEO of Constellation Energy (then operating division of Exelon), has been appointed to the Eos Board of Directors, effective March 26, 2025. Nigro's extensive leadership across both competitive and regulated energy markets is instrumental as Eos advances its mission to deliver safe, sustainable, and American-made energy stora

    3/27/25 4:10:00 PM ET
    $EOSE
    $TLN
    Industrial Machinery/Components
    Miscellaneous
    Electric Utilities: Central
    Utilities

    $EOSE
    Financials

    Live finance-specific insights

    View All

    Eos Energy Enterprises Announces Date for Fourth Quarter and Full Year 2025 Financial Results and Conference Call

    EDISON, N.J., Feb. 11, 2026 (GLOBE NEWSWIRE) -- Eos Energy Enterprises, Inc. (NASDAQ:EOSE) ("Eos" or the "Company"), an American energy company and the leading innovator in designing, sourcing, manufacturing, and providing zinc-based battery energy storage systems (BESS) manufactured in the United States, today announced it will release its fourth quarter and full year 2025 financial results before the U.S. market opens on February 26, 2026. A conference call to discuss its results will take place the same morning at 8:30 a.m. Eastern Time. Eos partners with Say Technologies to allow retail and institutional shareholders to submit and vote on questions ahead of the earnings call. A select

    2/11/26 4:30:00 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    Eos Energy Enterprises Delivers Highest Company Quarterly Revenue, Doubling Second Quarter 2025, and Reports Third Quarter 2025 Financial Results

    $30.5 million revenue, highest in Company history, double prior quarter and nearly double full year 2024Secured strategic 228 MWh order with Frontier Power to deploy Eos Z3™ energy storage systems across Frontier's expanding grid-reliability and energy storage portfolioSigned a 750 MWh master supply agreement with MN8 Energy, one of the largest independent renewable operators in the United States Formed strategic collaboration with Talen Energy aimed at developing multiple GWh of storage capacity supporting data centers and AI infrastructure in PennsylvaniaAwarded $24 million in state and county incentives to support manufacturing expansion and software hub development in Pennsylvania Three

    11/5/25 4:05:00 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    Eos Energy Enterprises Announces Date for Third Quarter 2025 Financial Results and Conference Call

    EDISON, N.J., Oct. 27, 2025 (GLOBE NEWSWIRE) -- Eos Energy Enterprises, Inc. (NASDAQ:EOSE) ("Eos" or the "Company"), an American energy company and the leading innovator in designing, sourcing, manufacturing, and providing zinc-based battery energy storage systems (BESS) manufactured in the United States, today announced it will release its third quarter 2025 financial results after the U.S. market closes on November 5, 2025. A conference call to discuss its results will take place the following morning on November 6, 2025, at 8:30 a.m. Eastern Time. Eos partners with Say Technologies to allow retail and institutional shareholders to submit and vote on questions ahead of the earnings call

    10/27/25 5:28:19 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    $EOSE
    Large Ownership Changes

    This live feed shows all institutional transactions in real time.

    View All

    Amendment: SEC Form SC 13D/A filed by Eos Energy Enterprises Inc.

    SC 13D/A - Eos Energy Enterprises, Inc. (0001805077) (Subject)

    12/17/24 2:48:02 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    Amendment: SEC Form SC 13D/A filed by Eos Energy Enterprises Inc.

    SC 13D/A - Eos Energy Enterprises, Inc. (0001805077) (Subject)

    11/4/24 4:56:35 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous

    Amendment: SEC Form SC 13D/A filed by Eos Energy Enterprises Inc.

    SC 13D/A - Eos Energy Enterprises, Inc. (0001805077) (Subject)

    9/12/24 5:14:58 PM ET
    $EOSE
    Industrial Machinery/Components
    Miscellaneous