eose-20260324

Delaware

001-39291

84-4290188

(State or other jurisdiction

of incorporation)

(Commission

File Number)

(IRS Employer

Identification No.)

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))

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).

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. ☐

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

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.


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						Press release of Eos Energy Enterprises, Inc., dated March 26, 2026
104						Cover page of this Current Report on Form 8-K formatted in Inline XBRL

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