[Form 3] Eos Energy Enterprises, Inc. Initial Statement of Beneficial Ownership

Rhea-AI Filing Summary

Eos Energy Enterprises (EOSE) filed a Form 3, the initial statement of beneficial ownership, for officer Michelle Buczkowski. The filing reports 47,773 shares of Common Stock beneficially owned, held in direct form. The event date is 11/03/2025.

Buczkowski is listed as Chief Administration Officer. The filing includes an Exhibit 24 Power of Attorney, and the form was signed by /s/ Michael Silberman as attorney-in-fact.

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Buczkowski Michelle

(Last) (First) (Middle)

C/O EOS ENERGY ENTERPRISES, INC.

3920 PARK AVENUE

(Street)

EDISON NJ 08820

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
11/03/2025

3. Issuer Name and Ticker or Trading Symbol
Eos Energy Enterprises, Inc. [ EOSE ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Administration Officer

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	47,773	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exhibit 24 - Power of Attorney

	/s/ Michael Silberman as attorney-in-fact for Michelle Buczkowski	11/13/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did EOSE disclose in this Form 3 filing?

An initial statement of beneficial ownership for officer Michelle Buczkowski, showing 47,773 shares of Common Stock held directly.

How many EOSE shares does the reporting person beneficially own?

The filing lists 47,773 shares of Common Stock beneficially owned, with direct ownership.

What is the reporting person’s role at EOSE?

The reporting person is identified as an Officer, specifically Chief Administration Officer.

What is the date of the event requiring this Form 3?

The event date is 11/03/2025.

Are any derivative securities reported on this Form 3?

The provided excerpt shows no completed entries in Table II for derivative securities.

Who signed the Form 3 for the reporting person?

It was signed by /s/ Michael Silberman as attorney-in-fact for Michelle Buczkowski, with an Exhibit 24 Power of Attorney referenced.

Is this filing by one person or a group?

The form indicates it was filed by one reporting person.