Walters Marian 4

4 · Eos Energy Enterprises, Inc. · Filed Dec 8, 2025

Form 4

Period: 2025-12-04

Director

Transactions

Exercise/Conversion
Common Stock
2025-12-04$14.43/sh+18,473$266,565→ 152,267 total
Tax Payment
Common Stock
2025-12-04$15.75/sh−16,933$266,695→ 135,334 total
Exercise/Conversion
Common Stock
2025-12-04$1.18/sh+50,000$59,000→ 185,334 total
Sale
Common Stock
2025-12-04$15.81/sh−50,000$790,500→ 135,334 total
Exercise/Conversion
Stock Option (Right to Buy)
2025-12-04−18,473→ 0 total
Exercise: $14.43Exp: 2025-12-08→ Common Stock (18,473 underlying)
Exercise/Conversion
Stock Option (Right to Buy)
2025-12-04−50,000→ 95,018 total
Exercise: $1.18Exp: 2027-05-19→ Common Stock (50,000 underlying)

Holdings

Footnotes (5)

[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 multiple transactions at prices ranging from $15.43 to $15.90, 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.
[F2]The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.42 to $16.02, 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.
[F3]Shares of record held by David Walters and Marian Walters as trustees of the D. and M. Walters Family Trust dtd 7/6/2020.
[F4]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.
[F5]On May 19, 2022 the reporting person was granted stock options to purchase 145,018 shares of common stock which vested on May 19, 2023.

Documents

1 file