ALEXANDER DIMITRIEF - 05 Dec 2025 Form 4 Insider Report for Eos Energy Enterprises, Inc. (EOSE)

Role
Director
Signature
/s/ Michael Silberman as attorney-in-fact for Alexander Dimitrief
Issuer symbol
EOSE
Transactions as of
05 Dec 2025
Net transactions value
+$474
Form type
4
Filing time
08 Dec 2025, 20:28:35 UTC
Previous filing
05 Aug 2025
Next filing
04 Mar 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
DIMITRIEF ALEXANDER Director C/O EOS ENERGY ENTERPRISES, INC., 3920 PARK AVENUE, EDISON /s/ Michael Silberman as attorney-in-fact for Alexander Dimitrief 08 Dec 2025 0001614732

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction EOSE Common Stock Options Exercise $266,565 +18,473 +8.4% $14.43 237,925 05 Dec 2025 Direct
transaction EOSE Common Stock Tax liability $266,091 -17,704 -7.4% $15.03 220,221 05 Dec 2025 Direct F1
holding EOSE Common Stock 10,000 05 Dec 2025 By Spouse

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction EOSE Stock Option (Right to Buy) Options Exercise $0 -18,473 -100% $0.000000 0 05 Dec 2025 Common Stock 18,473 $14.43 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The Reporting Person acquired shares through a cashless exercise transaction with the issuer in which the Reporting Person surrendered optioned shares in payment of the purchase price. These surrendered shares were sold in a single transaction at a price of $15.03.
F2 On December 8, 2020 the reporting person was granted stock options to purchase 18,473 shares of common stock which vested on June 15, 2021.