Statement of Changes in Beneficial Ownership (4)

FORM 4

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

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3235-0287

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

1. Name and Address of Reporting Person * Shribman Daniel	2. Issuer Name and Ticker or Trading Symbol Eos Energy Enterprises, Inc. [ EOSE ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director                    _____ 10% Owner _____ Officer (give title below)    _____ Other (specify below)
(Last)          (First)          (Middle) C/O EOS ENERGY ENTERPRISES, INC., 3920 PARK AVENUE	3. Date of Earliest Transaction (MM/DD/YYYY) 6/15/2021
(Street) EDISON, NJ 08820 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	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 Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	6/15/2021		M		5198 (1)	A	$0 (2)	998948	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	$0.0	6/15/2021		M			5198	6/15/2021	(3)	Common Stock	5198.0	$0	0	D
Restricted Stock Units	(4)	6/17/2021		A		3762		(5)	(3)	Common Stock	3762.0	$0	3762	D
Stock Option (Right to Buy)	$19.94	6/17/2021		A		9617		(6)	6/17/2026	Common Stock	9617.0	$0	9617	D

Explanation of Responses:
(1)	Restricted stock units vested
(2)	Convert without cost to shares of common stock on a one-for-one basis.
(3)	Not applicable.
(4)	Each restricted stock unit represents a contingent right to receive one share of common stock
(5)	The reporting person received restricted stock units which vest on the earlier of (i) the first anniversary of the grant date, and (ii) immediately prior to the date of the next annual shareholders meeting of the Company following the grant date; provided, that, the restricted stock units shall vest in full upon the consummation of a change in control.
(6)	The reporting person was granted an option to purchase common stock which vests on the earlier of (i) the first anniversary of the grant date, and (ii) immediately prior to the date of the next annual shareholders meeting of the Company following the grant date; provided, that, the option shall vest in full upon the consummation of a change in control.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Shribman Daniel C/O EOS ENERGY ENTERPRISES, INC. 3920 PARK AVENUE EDISON, NJ 08820	X

Signatures
/s/ Sagar Kurada as attorney-in-fact for Daniel Shribman		9/8/2021
**Signature of Reporting Person		Date