Eos Energy (EOSE) GC boosts stake despite tax sale, Form 4 shows

Rhea-AI Filing Summary

Eos Energy Enterprises (EOSE) – Form 4 filing (29 Jul 2025)

• General Counsel Michael W. Silberman reported two transactions tied to the vesting of restricted stock units (RSUs) granted under the 2020 Incentive Plan.
• 25 Jul 2025: 145,833 RSUs were converted to an equal number of common shares (Code M) at $0 exercise price, increasing direct holdings to 307,237 shares.
• 29 Jul 2025: 65,625 shares were sold (Code S) at a $5.94 weighted-average price under a pre-arranged Rule 10b5-1 plan to cover tax obligations.
• After the transactions, the officer directly holds 241,612 shares.

No other derivatives remain reportable; 291,667 RSUs are still outstanding. Net effect is a +80,208-share increase in ownership, indicating continued equity exposure despite the necessary tax sale. The filing does not disclose any company-level financial data or change in guidance.

Positive

• Officer increased net share ownership by 80,208 shares, indicating continued alignment with shareholders.
• Use of a Rule 10b5-1 trading plan demonstrates adherence to governance best practices.

Negative

• 65,625-share sale at $5.94 may be perceived as insider selling, though primarily for tax withholding.

Insights

Securities Analyst

TL;DR: Routine RSU vesting; tax-related sale, net ownership up—neutral signal.

Silberman’s 145.8k RSU conversion followed by a 65.6k share sale is typical for executive tax withholding. The net 80.2k share increase raises his stake to 241.6k shares, suggesting alignment with shareholders. Volume sold (≈0.05% of ~130 m shares outstanding) is immaterial to float and unlikely to pressure the stock. Because the sale was pre-programmed under a 10b5-1 plan, it carries limited informational value regarding insider sentiment. Overall impact on valuation or liquidity is negligible.

Corporate Governance Expert

TL;DR: Compliance looks solid; 10b5-1 use mitigates insider-trading concerns.

The filing shows proper Section 16 reporting within two business days, a best-practice indicator. Use of a 10b5-1 plan (adopted 14 Mar 2025) shields both the officer and the company from allegations of opportunistic trading. Retention of over 240k shares post-sale supports long-term incentive alignment. No red flags around undisclosed perks or accelerated vesting were detected.

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
Estimated average burden
hours per response:			0.5

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^*

Silberman Michael W

(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)
	General Counsel

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		145,833	A	$0(1)	307,237	D
Common Stock	07/29/2025		S(2)		65,625	D	$5.94(3)	241,612	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			145,833	(5)	(5)	Common Stock	145,833	$0	291,667	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	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.
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.

FAQ

How many EOSE shares did the insider sell on 29 Jul 2025?

Michael W. Silberman sold 65,625 shares at a weighted-average price of $5.94.

Why were EOSE shares sold by the insider?

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

What is the insider’s current EOSE shareholding after the transactions?

Silberman directly holds 241,612 common shares following the reported trades.

Did the insider exercise stock options or RSUs?

Yes. On 25 Jul 2025, 145,833 RSUs were converted into common stock at $0 exercise price.

Are there RSUs remaining unvested for the insider at EOSE?

After the conversion, 291,667 RSUs remain outstanding and will vest in equal installments over the next two years.