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EOSE · Current Report (Form 8-K) · Filed March 26, 2026

Eos Energy Enterprises Inc — Current Report (Form 8-K)

Form
8-K
Filed
March 26, 2026
Period
Mar 24, 2026
Ticker
EOSE
Accession
0001628280-26-021247
Boardroom Alpha · Filing insights

Eos appoints Nathaniel Fick to the Board as Class III; board size becomes 11; indemnification to be issued; no compensation.

About Eos Energy Enterprises Inc
Market cap
$3.2B
1Y TSR
+83.3%
3Y TSR
+33.0%
Board grade
C
Sector
Industrials
CEO
Joe Mastrangelo
Last annual meeting: Jun 3, 2026 · View full Eos Energy Enterprises Inc profile →
eose-20260324

 

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
Date of Report (Date of earliest event reported): March 24, 2026
EOS ENERGY ENTERPRISES, INC.
(Exact name of registrant as specified in its charter)
Delaware
001-39291
84-4290188
(State or other jurisdiction
of incorporation)
(Commission
File Number)
(IRS Employer
Identification No.)

3920 Park Avenue
Edison, New Jersey 08820
(Address of principal executive offices, including zip code)
Registrant’s telephone number, including area code: (732) 225-8400
N/A
(Former name or former address, if changed since last report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Securities registered pursuant to Section 12(b) of the Act:
Title of each class
Trading Symbol(s)
Name of each exchange on which registered
Common stock, par value $0.0001 per share
EOSE
The Nasdaq Stock Market LLC
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.



1


Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.
Appointment of Director
On March 24, 2026, the Board of Directors of Eos Energy Enterprises, Inc. (the “Company”) appointed Nathaniel Fick, age 48, to the Board of Directors. Mr. Fick will serve as a Class III director, and shall hold office until the Company’s 2026 annual meeting, and if elected by a vote of the shareholders at such annual meeting will serve for a term of three years or until his successor is elected and qualified. With this appointment, the Board now has eleven directors. Mr. Fick is being appointed to the Nominating and Corporate Governance Committee.
Mr. Fick was not selected as a director pursuant to any arrangements or understandings with the Company or with any other person, and there are no transactions between the Company and Mr. Fick that would require disclosure under Item 404(a) of Regulation S-K.
Mr. Fick will not be compensated for his services on the Board in accordance with the policies of his employer.
The Company will enter into an indemnification agreement with Mr. Fick on the same basis as each of the Company’s other directors. This agreement, among other things, requires the Company to indemnify its directors for certain expenses, including attorneys’ fees, judgments, fines and settlement amounts incurred by a director in any action or proceeding arising out of their services as one of the Company’s directors or any other company or enterprise to which the person provides services at the Company’s request.
The foregoing description of the indemnification agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the form of indemnification agreement, a copy of which is incorporated by reference as Exhibit 10.1 hereto and incorporated by reference herein.
Item 9.01 Financial Statement and Exhibits.
(d) Exhibits
Exhibit
Number
 
Description of Document
 
 
 
10.1
Form of Indemnification Agreement for directors (incorporated by reference to Exhibit 10.13 to the Current Report on Form 8-K filed by Eos Energy Enterprises, Inc. on November 20, 2020).
99.1
104
Cover page of this Current Report on Form 8-K formatted in Inline XBRL
2


SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
EOS ENERGY ENTERPRISES, INC.
Dated: March 26, 2026
By:
/s/ Nathan Kroeker
Name:
Nathan Kroeker
Title:
Interim Chief Financial Officer
3
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Reference

Frequently asked questions

When did Eos Energy Enterprises Inc file this 8-K?
Eos Energy Enterprises Inc (EOSE) filed this Current Report (Form 8-K) with the SEC on March 26, 2026. The accession number assigned by EDGAR is 0001628280-26-021247.
What does an 8-K disclose?
Form 8-K is the SEC's current-report form, used to disclose material events between periodic reports (10-K / 10-Q). Triggers include CEO/CFO departures, acquisitions, bankruptcies, earnings releases, auditor changes, changes in fiscal year, and amendments to corporate governance. Each 8-K is keyed to one or more Item numbers (1.01 through 9.01).
What is the key takeaway from this filing?
Eos appoints Nathaniel Fick to the Board as Class III; board size becomes 11; indemnification to be issued; no compensation. This is Boardroom Alpha's one-line summary of the current report; see the full filing text above for the formal disclosure.
What Item codes does an 8-K cover?
An 8-K's Item codes (1.01 through 9.01) specify what kind of event is being disclosed — e.g. Item 1.01 for entering a material agreement, Item 5.02 for departure/election of directors and executive officers, Item 8.01 for other events. The Item codes for this 8-K appear in the filing text above.
Where can I find Eos Energy Enterprises Inc's prior current reports on EDGAR?
The SEC EDGAR browser lists every 8-K Eos Energy Enterprises Inc has filed under CIK 1805077, sortable by date. Use the "View on SEC EDGAR" link in the page header, or browse directly via https://www.sec.gov/cgi-bin/browse-edgar.
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