Eos Energy (NASDAQ: EOSE) director converts rights into stock and warrants

Rhea-AI Filing Summary

Eos Energy Enterprises director Alexander Dimitrief participated in a Rights Offering that closed on July 21, 2026, converting subscription rights into 17,897 common shares and 7,853 warrants directly, and 1,377 shares and 603 warrants indirectly through his spouse at an exercise price of $5.48 per share. Following these exercises, he held 269,296 common shares directly and 11,377 indirectly, plus warrants that are immediately exercisable and expire 10 years after the Rights Offering closes, unless exercised or redeemed earlier.

Insider Trade Summary

Net Buyer: 19,274 shares

Net Buy 6 txns

Insider DIMITRIEF ALEXANDER

Role Director

Type	Security	Shares	Price	Value
Exercise	Subscription Rights (right to buy) F1	17,897	$0.00	$0.00
Exercise	Subscription Rights (right to buy) F1	1,377	$0.00	$0.00
Exercise	Warrant (right to buy) F1, F2	7,853	$0.00	$0.00
Exercise	Warrant (right to buy) F1, F2	603	$0.00	$0.00
Exercise	Common Stock F1	17,897	$5.48	$98K
Exercise	Common Stock F1	1,377	$5.48	$8K

Holdings After Transaction: Subscription Rights (right to buy) — 0 shares (Direct); Subscription Rights (right to buy) — 0 shares (Indirect, By Spouse); Warrant (right to buy) — 7,853 shares (Direct); Warrant (right to buy) — 603 shares (Indirect, By Spouse); Common Stock — 269,296 shares (Direct); Common Stock — 11,377 shares (Indirect, By Spouse)

Footnotes (2)

1. F1. Represents the conversion of a subscription right issued by the Issuer as part of a rights offering that closed on July 21, 2026 (the "Rights Offering"). Each subscription right was exercisable for units that consisted of (i) 1 share of common stock and (ii) 0.4388 of a warrant exercisable to acquire a share of common stock at an exercise price of $5.48 per share.
2. F2. Warrants became exercisable immediately after the Rights Offering closed and expire 10 years later, unless exercised or redeemed earlier. If a warrant is not exercised or redeemed before it expires, it will have no value.

Key Figures

Common shares acquired (direct): 17,897 shares Common shares acquired (indirect): 1,377 shares Exercise price: $5.48 per share +5 more

8 metrics

Common shares acquired (direct) 17,897 shares Common Stock acquired upon conversion of subscription rights on July 21, 2026

Common shares acquired (indirect) 1,377 shares Common Stock acquired indirectly through spouse via subscription rights on July 21, 2026

Exercise price $5.48 per share Price per common share in units issued in the Rights Offering

Direct common holdings after transaction 269,296 shares Direct Common Stock held by Alexander Dimitrief after July 21, 2026 transactions

Indirect common holdings after transaction 11,377 shares Common Stock held indirectly through spouse after July 21, 2026 transactions

Warrants acquired (direct) 7,853 warrants Warrants (right to buy Common Stock) acquired directly in Rights Offering units

Warrants acquired (indirect) 603 warrants Warrants acquired indirectly through spouse in Rights Offering units

Warrant term 10 years Warrants become exercisable immediately and expire 10 years after the Rights Offering closes, unless exercised or redeemed earlier

Key Terms

Subscription Rights, Rights Offering, Warrant (right to buy)

3 terms

Subscription Rights financial

"Represents the conversion of a subscription right issued as part of a rights offering"

Subscription rights are short-term privileges given to existing shareholders to buy additional new shares before the general public, typically at a set price and in proportion to their current holdings. Think of it as getting a coupon for first dibs on extra slices of a pizza so your share of the pie doesn’t shrink; exercising them can be a cheaper way to maintain your ownership and voting power, while ignoring them can reduce your stake and potential future earnings.

Rights Offering financial

"issued by the Issuer as part of a rights offering that closed on July 21, 2026"

A rights offering is a way for a company to raise additional money by giving existing shareholders the opportunity to buy more shares at a discounted price before they are offered to the public. It’s similar to a special sale where current owners get the first chance to buy extra items at a lower cost, allowing them to increase their investment if they choose. This process matters to investors because it can affect the value of their holdings and their ability to buy new shares at favorable terms.

Warrant (right to buy) financial

"Warrants became exercisable immediately after the Rights Offering closed and expire 10 years later"

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/06/2026 - 08:13 AM Accepted by SEC EDGAR 08/06/2026 - 08:12 AM Learn about SEC filing dates

FAQ

What transactions did Alexander Dimitrief report for EOSE on July 21, 2026?

Alexander Dimitrief reported exercising subscription rights in Eos Energy’s Rights Offering on July 21, 2026, converting them into common stock and warrants held both directly and through his spouse. These are coded as exercises or conversions of derivative securities (code M), not open-market trades or sales.

How many EOSE common shares did Dimitrief acquire directly and indirectly?

Through the Rights Offering, Dimitrief acquired 17,897 Eos Energy common shares directly and 1,377 common shares indirectly via his spouse. These shares resulted from converting subscription rights into units consisting of common stock and associated warrants at a defined exercise price.

What was the exercise price in the EOSE Rights Offering units for Dimitrief?

Each subscription right exercised by Dimitrief was converted into units at an exercise price of $5.48 per common share. Each unit consisted of one share of common stock plus 0.4388 of a warrant exercisable to acquire an additional share at the same $5.48 per-share price.

What warrants did Dimitrief and his spouse receive in the EOSE Rights Offering?

Upon conversion, Dimitrief received 7,853 warrants directly and 603 warrants indirectly through his spouse. According to the terms, these warrants became immediately exercisable after the Rights Offering closed and expire 10 years later, unless exercised or redeemed earlier by the holder.

What are Alexander Dimitrief’s EOSE shareholdings after these Form 4 transactions?

After the July 21, 2026 transactions, Dimitrief beneficially held 269,296 Eos Energy common shares directly and 11,377 common shares indirectly through his spouse. He also held warrants associated with the Rights Offering units, in addition to his existing common stock position.

Were the reported EOSE transactions under a Rule 10b5-1 trading plan?

The filing’s Rule 10b5-1 checkbox is not marked as an affirmative plan, and no footnote states these trades were made under a 10b5-1 arrangement. The reported activity reflects rights-offering subscription exercises rather than discretionary open-market buying or selling.

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^*

DIMITRIEF ALEXANDER

(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)
07/21/2026

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
Common Stock	07/21/2026		M(1)		17,897	A	$5.48	269,296	D
Common Stock	07/21/2026		M(1)		1,377	A	$5.48	11,377	I	By Spouse

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
Subscription Rights (right to buy)	$5.48	07/21/2026		M(1)			17,897	(1)	07/21/2026	Common Stock	17,897	$0	0	D
Subscription Rights (right to buy)	$5.48	07/21/2026		M(1)			1,377	(1)	07/21/2026	Common Stock	1,377	$0	0	I	By Spouse
Warrant (right to buy)	$5.48	07/21/2026		M(1)		7,853		(1)(2)	(2)	Common Stock	7,853	$0	7,853	D
Warrant (right to buy)	$5.48	07/21/2026		M(1)		603		(1)(2)	(2)	Common Stock	603	$0	603	I	By Spouse

Explanation of Responses:

1. Represents the conversion of a subscription right issued by the Issuer as part of a rights offering that closed on July 21, 2026 (the "Rights Offering"). Each subscription right was exercisable for units that consisted of (i) 1 share of common stock and (ii) 0.4388 of a warrant exercisable to acquire a share of common stock at an exercise price of $5.48 per share.

2. Warrants became exercisable immediately after the Rights Offering closed and expire 10 years later, unless exercised or redeemed earlier. If a warrant is not exercised or redeemed before it expires, it will have no value.

Remarks:

	/s/ Sumeet Puri as attorney-in-fact for Alexander Dimitrief	08/06/2026
	** 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)