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* Stidolph Russell Monoki (Last) (First) (Middle) C/O ALTENERGY LLC 137 ROWAYTON AVENUE (Street) ROWAYTON CT 06853 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 11/16/2020	3. Issuer Name and Ticker or Trading Symbol Eos Energy Enterprises, Inc. [ EOSE ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X 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	6,777,925	I	See Footnote(1)(2)

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
Options	(3)	10/23/2030	Common Stock	288,190	8.67	D

1. Name and Address of Reporting Person* Stidolph Russell Monoki (Last) (First) (Middle) C/O ALTENERGY LLC 137 ROWAYTON AVENUE (Street) ROWAYTON CT 06853 (City) (State) (Zip)

1. Name and Address of Reporting Person* AltEnergy, LLC (Last) (First) (Middle) 137 ROWAYTON AVENUE (Street) ROWAYTON CT 06853 (City) (State) (Zip)

1. Name and Address of Reporting Person* AltEnergy Storage LLC (Last) (First) (Middle) 137 ROWAYTON AVENUE (Street) ROWAYTON CT 06853 (City) (State) (Zip)

1. Name and Address of Reporting Person* AltEnergy Storage II LLC (Last) (First) (Middle) 137 ROWAYTON AVENUE (Street) ROWAYTON CT 06853 (City) (State) (Zip)

1. Name and Address of Reporting Person* AltEnergy Storage V LLC (Last) (First) (Middle) 137 ROWAYTON AVENUE (Street) ROWAYTON CT 06853 (City) (State) (Zip)

1. Name and Address of Reporting Person* AltEnergy Storage VI LLC (Last) (First) (Middle) 137 ROWAYTON AVENUE (Street) ROWAYTON CT 06853 (City) (State) (Zip)

1. Name and Address of Reporting Person* AltEnergy Storage Bridge LLC (Last) (First) (Middle) 137 ROWAYTON AVENUE (Street) ROWAYTON CT 06853 (City) (State) (Zip)

1. Name and Address of Reporting Person* AltEnergy Transmission LLC (Last) (First) (Middle) 137 ROWAYTON AVENUE (Street) ROWAYTON CT 06853 (City) (State) (Zip)

1. Name and Address of Reporting Person* AltEnergy Storage Bridge Phase II LLC (Last) (First) (Middle) 137 ROWAYTON AVENUE (Street) ROWAYTON CT 06853 (City) (State) (Zip)

Explanation of Responses:

1. In addition to Russell Stidolph, a natural person ("Mr. Stidolph"), this Form 3 is being filed jointly by AltEnergy LLC, a Delaware limited liability company ("AltEnergy"); (ii) AltEnergy Storage LLC, a Delaware limited liability company ("AltEnergy I"); (iii) AltEnergy Storage II LLC, a Delaware limited liability company ("AltEnergy II"); (iv) AltEnergy Storage V LLC, a Delaware limited liability company ("AltEnergy V"); (v) AltEnergy VI LLC, a Delaware limited liability company ("AltEnergy VI"); AltEnergy Storage Bridge LLC, a Delaware limited liability company ("Bridge"); AltEnergy Transmission LLC, a Delaware limited liability company ("Transmission"); AltEnergy Storage Bridge Phase II LLC ("Bridge II" and collectively, the "Filing Persons").

2. Mr. Stidolph is the managing director of AltEnergy, the managing member of each of AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II, and has voting and dispositive power with respect to the securities owned by AltEnergy I, AltEnergy II, AltEnergy V, AltEnergy VI, Bridge, Transmission and Bridge II. Each of the Filing Persons disclaims beneficial ownership of the outstanding shares of Common Stock ("Common Stock") of the issuer reported herein except to the extent of its pecuniary interest therein.

3. Options to purchase 192,126 shares of common stock are fully vested. The options to purchase 96,064 shares of common stock will vest as of November 16, 2022; provided, that, prior to the vesting date: (i) the reporting person has not resigned as a member of the Board of Directors of the Company (the "Board") for any reason, and (ii) the reporting person has not been removed as a member of the Board by the issuer for cause.

	/s/ Russell Stidolph	11/27/2020
	AltEnergy LLC by: /s/ Russell Stidolph, Managing Director	11/27/2020
	AltEnergy Storage LLC by: /s/ Russell Stidolph, Managing Director	11/27/2020
	AltEnergy Storage II LLC by: /s/ Russell Stidolph, Managing Director	11/27/2020
	AltEnergy Storage V LLC by: /s/ Russell Stidolph, Managing Director	11/27/2020
	AltEnergy VI LLC by: /s/ Russell Stidolph, Managing Director	11/27/2020
	AltEnergy Storage Bridge LLC by: /s/ Russell Stidolph, Managing Director	11/27/2020
	AltEnergy Transmission LLC by: /s/ Russell Stidolph, Managing Director	11/27/2020
	AltEnergy Storage Bridge Phase II LLC by: /s/ Russell Stidolph, Managing Director	11/27/2020
	** Signature of Reporting Person	Date
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