Eos Energy director granted 5,942 RSUs

Nigro Joseph reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Nigro Joseph reported acquisition or exercise transactions in this Form 4 filing.

Eos Energy Enterprises, Inc. reported that director Joseph Nigro received a grant of 5942.0000 Restricted Stock Units (RSUs) on 2026-07-23 as part of the company’s annual compensation review and market benchmarking. Each RSU represents a contingent right to receive one share of common stock and will settle in common stock. The RSUs vest on the earlier of the first anniversary of the grant date or immediately prior to the next annual shareholders meeting following the grant date. Following this award, Nigro holds 5942.0000 RSUs directly.

Insider Trade Summary

Grant/Award: 5,942 shares

Grant/Award 1 txn

Insider Nigro Joseph

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units F1, F2, F3, F4	5,942	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 5,942 contracts (Direct)

Footnotes (4)

1. F1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock.
2. F2. Granted as part of the Company's annual compensation review process and reflects an adjustment based on benchmarking against market compensation practices.
3. F3. The reporting person was granted RSUs that settle in common stock, which will 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.
4. F4. Not applicable.

Key Figures

RSUs granted: 5942.0000 units Underlying common stock: 5942.0000 shares Grant price per RSU: 0.0000 per share +2 more

5 metrics

RSUs granted 5942.0000 units Restricted Stock Units awarded to director Joseph Nigro on 2026-07-23

Underlying common stock 5942.0000 shares Each RSU represents a contingent right to receive one share of common stock

Grant price per RSU 0.0000 per share Equity compensation grant with no cash price per unit

RSUs held after transaction 5942.0000 units Total Restricted Stock Units directly held by Joseph Nigro following the grant

Transaction date 2026-07-23 Date of RSU grant to director Joseph Nigro

Key Terms

Restricted Stock Units, contingent right, annual compensation review process, vest

4 terms

Restricted Stock Units financial

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

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

contingent right financial

"represents a contingent right to receive one share of common stock"

annual compensation review process financial

"Granted as part of the Company's annual compensation review process"

vest financial

"RSUs that settle in common stock, which will vest on the earlier of"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did EOSE disclose for director Joseph Nigro?

Eos Energy Enterprises disclosed that director Joseph Nigro received a grant of 5942.0000 Restricted Stock Units. The RSUs were awarded at a price of 0.0000 per unit and are part of his equity compensation, settling in shares of common stock upon vesting.

How many EOSE Restricted Stock Units were granted to Joseph Nigro and when do they vest?

Joseph Nigro was granted 5942.0000 RSUs on 2026-07-23. These RSUs vest on the earlier of the first anniversary of the grant date or immediately prior to the company’s next annual shareholders meeting following the grant date, after which they settle in common stock.

What does each EOSE Restricted Stock Unit granted to Joseph Nigro represent?

Each RSU granted to Joseph Nigro represents a contingent right to receive one share of common stock. Once the vesting condition is met, the RSUs settle in common stock, effectively converting the units into the company’s common shares on a one-for-one basis.

Why were the 5942.0000 EOSE RSUs granted to director Joseph Nigro?

The 5942.0000 RSUs were granted as part of Eos Energy’s annual compensation review process. The award reflects an adjustment based on benchmarking the director’s compensation against market compensation practices, aligning his equity award level with current market data.

How many EOSE RSUs does Joseph Nigro hold after this grant?

After this award, Joseph Nigro holds 5942.0000 Restricted Stock Units directly. These RSUs are scheduled to vest based on the specified timing conditions and, upon vesting, will settle in shares of Eos Energy Enterprises’ common stock on a one-for-one basis.

Is the EOSE RSU grant to Joseph Nigro tied to a Rule 10b5-1 trading plan?

The Form 4’s Rule 10b5-1 checkbox is not marked for this RSU grant. The footnotes instead describe the award as part of the company’s annual compensation review and benchmarking process, without referencing any pre-arranged trading plan under Rule 10b5-1.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 07/27/2026 - 05:17 PM Accepted by SEC EDGAR 07/27/2026 - 05:17 PM Learn about SEC filing dates

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).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Nigro Joseph

(Last) (First) (Middle)

C/O EOS ENERGY ENTERPRISES, INC.

TWO ALLEGHENY CENTER, NOVA TOWER 2

(Street)

PITTSBURGH PENNSYLVANIA 15212

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/23/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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

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	(1)	07/23/2026		A		5,942(2)		(3)	(4)	Common Stock	5,942	$0	5,942	D

Explanation of Responses:

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

2. Granted as part of the Company's annual compensation review process and reflects an adjustment based on benchmarking against market compensation practices.

3. The reporting person was granted RSUs that settle in common stock, which will 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.

4. Not applicable.

Remarks:

	/s/ Sumeet Puri as attorney-in-fact for Joseph Nigro	07/27/2026
	** 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.
* Form 4: SEC 1474 (03-26)