Eos Energy (EOSE) Form 4: Interim CFO adds shares, partial sale for taxes

Rhea-AI Filing Summary

Insider activity: On 25 Jul 2025 Eos Energy Enterprises (EOSE) CCO & Interim CFO Nathan Kroeker converted 220,833 RSUs into common stock (Code M, $0 exercise price). Four days later, on 29 Jul 2025, he automatically sold 99,375 shares at a weighted-average $5.94 under a Rule 10b5-1 plan to satisfy estimated tax-withholding obligations.

Post-transaction holdings: Kroeker’s direct common-share position increased by 121,458 shares to 612,512. He also retains 441,667 unvested RSUs, giving him beneficial exposure to roughly 1.05 million shares in total.

• Net share accumulation signals continued equity alignment despite partial sale.
• Transactions are personal and have no direct balance-sheet effect on the company.

Positive

• Net addition of 121,458 common shares to insider’s direct holdings indicates continued equity exposure.
• 441,667 remaining RSUs provide further long-term alignment with shareholders.

Negative

• Sale of 99,375 shares at ~$5.94 may be viewed as insider profit-taking despite being tax-related.

Insights

Securities Analyst

TL;DR: Interim CFO gained 221k shares, sold 99k for taxes; still owns ~1 M share exposure—routine, modestly shareholder-aligned.

The filing shows a standard RSU vesting cycle followed by a pre-planned sale to cover withholding. While the gross sale could be viewed negatively, the net increase of 121 k shares and the sizeable remaining stake indicate Kroeker’s ongoing commitment. No operational information or market-moving data is included, so the event is neutral for valuation but modestly positive from a governance standpoint because alignment is maintained.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Kroeker Nathan

(Last) (First) (Middle)

C/O EOS ENERGY ENTERPRISES, INC.

3920 PARK AVENUE

(Street)

EDISON NJ 08820

(City) (State) (Zip)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CCO and Interim CFO

3. Date of Earliest Transaction (Month/Day/Year)
07/25/2025

4. 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 Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction 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	07/25/2025		M		220,833	A	$0(1)	711,887	D
Common Stock	07/29/2025		S(2)		99,375	D	$5.94(3)	612,512	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction 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 (Month/Day/Year)		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: 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(4)	(1)	07/25/2025		M			220,833	(5)	(5)	Common Stock	220,833	$0	441,667	D

Explanation of Responses:

1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock.

2. The sales reported in this Form 4 were effected automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 14, 2025 to cover estimated tax withholding obligations in connection with the vesting of restricted stock units.

3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $5.80 to $6.29, inclusive. The reporting person undertakes to provide the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

4. The reporting person received a grant of RSUs under the Issuer's 2020 Incentive Plan, which will vest in three equal installments on each of the first three anniversaries of the grant date, subject to continued service through each vesting date.

5. Not applicable.

Remarks:

	/s/ Michael Silberman as attorney-in-fact for Nathan Kroeker	07/29/2025
	** 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 4 (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.
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FAQ

How many EOSE shares did Nathan Kroeker acquire?

He acquired 220,833 shares through RSU vesting on 25 Jul 2025.

What price were the EOSE shares sold for?

99,375 shares were sold at a weighted-average price of $5.94 (range $5.80–$6.29).

Why did the insider sell shares?

The sale was executed under a Rule 10b5-1 plan to cover estimated tax-withholding obligations from RSU vesting.

What is the insider’s current stake in EOSE?

After the transactions, Kroeker directly owns 612,512 common shares and 441,667 unvested RSUs (≈1.05 M total exposure).

Does this Form 4 impact EOSE’s financials?

No. The filing only reflects changes in personal ownership and has no direct effect on the company’s balance sheet or earnings.