| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Walters Marian | Director | C/O EOS ENERGY ENTERPRISES, INC., 3920 PARK AVENUE, EDISON | /s/ Michael Silberman as attorney-in-fact for Marian Walters | 08 Dec 2025 | 0001782905 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | EOSE | Common Stock | Options Exercise | $267K | +18.5K | +13.81% | $14.43 | 152K | 04 Dec 2025 | Direct | |
| transaction | EOSE | Common Stock | Tax liability | -$267K | -16.9K | -11.12% | $15.75 | 135K | 04 Dec 2025 | Direct | F1 |
| transaction | EOSE | Common Stock | Options Exercise | $59K | +50K | +36.95% | $1.18 | 185K | 04 Dec 2025 | Direct | |
| transaction | EOSE | Common Stock | Sale | -$791K | -50K | -26.98% | $15.81 | 135K | 04 Dec 2025 | Direct | F2 |
| holding | EOSE | Common Stock | 5K | 04 Dec 2025 | See footnote | F3 |
| 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 | -18.5K | -100% | $0.00 | 0 | 04 Dec 2025 | Common Stock | 18.5K | $14.43 | Direct | F4 |
| transaction | EOSE | Stock Option (Right to Buy) | Options Exercise | $0 | -50K | -34.48% | $0.00 | 95K | 04 Dec 2025 | Common Stock | 50K | $1.18 | Direct | F5 |
| 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 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. |