STOCK TITAN

Eos Energy Enterprises (EOSE) director converts rights, adds 2,773 shares

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Eos Energy Enterprises director Joseph Nigro exercised subscription rights in a Rights Offering that closed on July 21, 2026, converting 2,773 subscription rights into 2,773 shares of common stock at an exercise price of $5.48 per share and receiving 1,217 warrants.

The transaction eliminated his subscription right position and left him holding 41,723 common shares directly, plus 1,217 warrants that became exercisable immediately and will expire 10 years after the Rights Offering if not exercised or redeemed earlier.

Positive

  • None.

Negative

  • None.
Insider Nigro Joseph
Role Director
Type Security Shares Price Value
Exercise Subscription Rights (right to buy) F1 2,773 $0.00 $0.00
Exercise Warrant (right to buy) F1, F2 1,217 $0.00 $0.00
Exercise Common Stock F1 2,773 $5.48 $15K
Holdings After Transaction: Subscription Rights (right to buy) — 0 shares (Direct); Warrant (right to buy) — 1,217 shares (Direct); Common Stock — 41,723 shares (Direct)
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.
Common shares acquired 2,773 shares Shares of common stock received upon conversion of subscription rights on July 21, 2026
Exercise price $5.48 per share Exercise price for units in the Rights Offering, each including one common share and 0.4388 of a warrant
Warrants acquired 1,217 warrants Warrants received with the Rights Offering units, exercisable to acquire common stock
Post-transaction holdings 41,723 shares Total direct Eos Energy common stock held by Joseph Nigro after the reported transactions
Subscription Rights financial
"Represents the conversion of a subscription right issued by the Issuer as part"
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 financial
"0.4388 of a warrant exercisable to acquire a share of common stock at"
A warrant is a time-limited financial contract that gives its holder the right to buy a company's shares at a set price before a specified date, like a coupon that lets you purchase stock at a fixed discount for a limited time. It matters to investors because warrants offer leveraged exposure to a stock’s upside and can dilute existing shareholders if exercised, so they affect potential gains and the company’s outstanding share count.
exercise price financial
"a share of common stock at an exercise price of $5.48 per share"
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

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

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FAQ

What did EOSE director Joseph Nigro report in this Form 4?

He reported exercising 2,773 subscription rights into 2,773 Eos Energy common shares at $5.48 per share and receiving 1,217 warrants. The conversion closed out his subscription rights position and increased his directly held common stock and warrant holdings.

How many EOSE common shares did Joseph Nigro acquire through the Rights Offering?

Joseph Nigro acquired 2,773 shares of common stock through the Rights Offering. These shares were received by converting an equal number of subscription rights at an exercise price of $5.48 per share, adding to his existing directly held Eos Energy stake.

How many EOSE warrants did Joseph Nigro receive and what do they represent?

He received 1,217 warrants, each exercisable to acquire Eos Energy common stock. The warrants were included in the Rights Offering units, became exercisable immediately after closing, and will expire 10 years later if not exercised or redeemed earlier by the company.

What is Joseph Nigro’s EOSE common stock holding after these transactions?

After these transactions, Joseph Nigro directly holds 41,723 shares of Eos Energy common stock. This total includes the 2,773 shares obtained by exercising subscription rights, as reflected in his updated post-transaction ownership in the Form 4 report.

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

The exercise price for each Rights Offering unit was $5.48 per share. Each subscription right was exercisable for a unit consisting of one common share and 0.4388 of a warrant, providing both immediate equity and future purchase rights on common stock.

When do the EOSE warrants received by Joseph Nigro expire?

The warrants became exercisable immediately after the Rights Offering closed and expire 10 years later. According to the terms, they may become worthless if not exercised or redeemed before expiration, making the exercise period a key feature of these securities.
SEC Form 4
FORM 4UNITED 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)
XDirector10% 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)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock07/21/2026M(1)2,773A$5.4841,723D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Subscription Rights (right to buy)$5.4807/21/2026M(1)2,773 (1)07/21/2026Common Stock2,773$00D
Warrant (right to buy)$5.4807/21/2026M(1)1,217 (1)(2) (2)Common Stock1,217$01,217D
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 Joseph Nigro08/06/2026
** Signature of Reporting PersonDate
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)