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* SPRING CREEK CAPITAL LLC (Last) (First) (Middle) 4111 EAST 37TH STREET NORTH (Street) WICHITA KS 67220 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 07/07/2021	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 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	2,538,261(1)	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
5% / 6% Convertible Senior PIK Toggle Notes Due 2021	07/07/2021	06/20/2026	Common Stock	4,999,100	20	D

1. Name and Address of Reporting Person* SPRING CREEK CAPITAL LLC (Last) (First) (Middle) 4111 EAST 37TH STREET NORTH (Street) WICHITA KS 67220 (City) (State) (Zip)

1. Name and Address of Reporting Person* SCC Holdings, LLC (Last) (First) (Middle) 4111 E 37TH STREET NORTH (Street) WICHITA KS 67220 (City) (State) (Zip)

1. Name and Address of Reporting Person* KOCH INDUSTRIES INC (Last) (First) (Middle) 4111 EAST 37TH STREET NORTH (Street) WICHITA KS 67220 (City) (State) (Zip)

Explanation of Responses:

1. Represents shares of common stock held by Spring Creek Capital, LLC ("Spring Creek"). Spring Creek is 100% owned by SCC Holdings, LLC ("SCC Holdings") and SCC Holdings is 100% owned by Koch Industries, Inc. ("Koch Industries"). Koch Industries and SCC Holdings may be deemed to beneficially own the Common Stock held by Spring Creek by virtue of Koch Industries' ownership of SCC Holdings and SCC Holdings' ownership of Spring Creek. Each of SCC Holdings and Koch Industries disclaim such beneficial ownership except to the extent of their pecuniary interest therein.

	Spring Creek Capital, LLC /s/ Raffaele G. Fazio, Secretary	07/14/2021
	SCC Holdings, LLC /s/ Raffaele G. Fazio, Secretary	07/14/2021
	Koch Industries, Inc. /s/ Raffaele G. Fazio, Assistant Secretary	07/14/2021
	** 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).
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