Eos Energy (EOSE) director Nathaniel Fick files initial SEC Form 3

Rhea-AI Filing Summary

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.

Key Terms

Form 3, reportingPersons, transactionSummary, derivativeSummary

4 terms

Form 3 regulatory

"INSIDER FILING DATA (Form 3):"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

reportingPersons regulatory

""reportingPersons": [ { "name": "Fick Nathaniel""

transactionSummary financial

""transactionSummary": { "buyCount": 0, "sellCount": 0"

derivativeSummary financial

""derivativeSummary": []"

Understanding Insider Trading Forms →

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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Fick Nathaniel

(Last) (First) (Middle)

875 THIRD AVENUE

11TH FLOOR

(Street)

NEW YORK NEW YORK 10022

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/24/2026

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

3a. Foreign Trading Symbol

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

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

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

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)

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

No securities are beneficially owned.

	/s/ Michael Silberman as attorney-in-fact for Nathaniel Fick	04/03/2026
	** 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.
* Form 3: SEC 1473 (03-26)

FAQ

What does Nathaniel Fick’s Form 3 filing mean for EOSE?

Nathaniel Fick’s Form 3 shows he is now an insider and reporting person for Eos Energy Enterprises (EOSE). Form 3 is an initial ownership statement and, in this data, does not reflect any stock purchases or sales.

Did Nathaniel Fick buy or sell EOSE shares in this Form 3?

Based on the provided data, this Form 3 does not report any buy or sell transactions in EOSE shares. It simply registers Nathaniel Fick as a director and SEC reporting insider for the company.

What is the purpose of a Form 3 for Eos Energy Enterprises (EOSE)?

Form 3 is used to report an insider’s initial beneficial ownership when they first become a director, officer, or large shareholder. For EOSE, it records Nathaniel Fick’s status as a director and reporting person with the SEC.

Does this EOSE Form 3 show any derivative securities activity?

The structured data for this Form 3 shows no derivative transactions or holdings in the derivativeSummary section. It appears to be a straightforward initial insider registration without listed option or warrant activity.

Who is identified as the reporting person in this EOSE Form 3?

The filing identifies Nathaniel Fick as the reporting person for Eos Energy Enterprises, Inc. He is classified as a director, with no officer role or ten percent owner status indicated in the provided data.