EOSE (Eos Energy Enterprises, Inc. Class A Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by EOSE officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-09 | Sumeet Puri | Chief Accounting Officer | MIXED | — | — |
| 2026-08-26 | Alessandro Lagi | Chief Financial Officer | A | — | — |
| 2026-08-26 | Sumeet Puri | Chief Accounting Officer | A | — | — |
| 2026-08-26 | Joe Mastrangelo | Chief Executive Officer | A | — | — |
| 2026-08-26 | Michelle Buczkowski | Chief Commercial Officer | A | — | — |
| 2026-08-06 | David Urban | Director | M | — | — |
| 2026-08-06 | Michelle Buczkowski | Chief Administration Officer | M | — | — |
| 2026-08-06 | Joseph Nigro | Director | M | — | — |
| 2026-08-06 | Joe Mastrangelo | Chief Executive Officer | M | — | — |
| 2026-08-06 | ALEXANDER DIMITRIEF | Director | M | — | — |
| 2026-08-06 | Nathan Kroeker | Chief Commercial Officer | M | — | — |
| 2026-08-06 | Cerberus GP Manager LLC | Director | A | — | — |
| 2026-08-06 | Jeffrey S Bornstein | Director | M | — | — |
| 2026-08-06 | Marian Walters | Director | M | — | — |
| 2026-08-06 | Claude Demby | Director | M | — | — |
| 2026-08-06 | David Urban | Director | M | — | — |
| 2026-08-06 | Nathan Kroeker | Chief Commercial Officer | M | — | — |
| 2026-08-06 | CCM Frontier Power USA Holdings GP, LLC | Director | A | — | — |
| 2026-08-06 | ALEXANDER DIMITRIEF | Director | M | — | — |
| 2026-08-06 | Joseph Nigro | Director | M | — | — |
| 2026-08-06 | Joe Mastrangelo | Chief Executive Officer | M | — | — |
| 2026-08-06 | Claude Demby | Director | M | — | — |
| 2026-08-06 | Michelle Buczkowski | Chief Administration Officer | M | — | — |
| 2026-08-06 | Marian Walters | Director | M | — | — |
| 2026-08-06 | Jeffrey S Bornstein | Director | M | — | — |
| 2026-07-28 | Nathan Kroeker | Chief Commercial Officer | MIXED | — | — |
| 2026-07-28 | Sumeet Puri | Chief Accounting Officer | MIXED | — | — |
| 2026-07-28 | Joe Mastrangelo | Chief Executive Officer | MIXED | — | — |
| 2026-07-27 | ALEXANDER DIMITRIEF | Director | A | — | — |
| 2026-07-27 | Marian Walters | Director | A | — | — |
| 2026-07-27 | Joseph Nigro | Director | A | — | — |
| 2026-07-15 | Marie Batz Martin | Chief Legal Officer | A | — | — |
| 2026-07-15 | Haiyan Song | Director | A | — | — |
| 2026-07-07 | Nathan Kroeker | CCO and Interim CFO | MIXED | — | — |
| 2026-07-07 | Joe Mastrangelo | Chief Executive Officer | MIXED | — | — |
| 2026-06-15 | Joe Mastrangelo | Chief Executive Officer | MIXED | — | — |
| 2026-06-09 | David Urban | Director | A | — | — |
| 2026-06-09 | Joseph Nigro | Director | A | — | — |
| 2026-06-09 | Gregory S. Nixon | Director | A | — | — |
| 2026-06-09 | Jeff McNeil | Director | A | — | — |
| 2026-06-09 | Marian Walters | Director | A | — | — |
| 2026-06-09 | Jeffrey S Bornstein | Director | A | — | — |
| 2026-06-09 | Alessandro Lagi | Chief Financial Officer | A | — | — |
| 2026-06-09 | ALEXANDER DIMITRIEF | Director | A | — | — |
| 2026-06-09 | Claude Demby | Director | A | — | — |
| 2026-06-03 | Marian Walters | Director | M | — | — |
| 2026-06-03 | Joseph Nigro | Director | M | — | — |
| 2026-05-29 | Marian Walters | Director | MIXED | — | — |
| 2026-05-22 | Marian Walters | Director | MIXED | — | — |
| 2026-05-19 | Claude Demby | Director | MIXED | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Director | 2,518,395 | — |
| — | Chief Executive Officer | 2,058,704 | — |
| — | Chief Commercial Officer | 904,471 | — |
| — | Director | 349,562 | — |
| — | Chief Legal Officer | 283,279 | — |
| — | Director | 280,673 | — |
| — | Chief Accounting Officer | 270,612 | — |
| — | Director | 176,634 | — |
| — | Director | 157,400 | — |
| — | Director | 145,306 | — |
| — | Director | 97,767 | — |
| — | Chief Commercial Officer | 61,827 | — |
| — | Director | 41,723 | — |
| — | Director | 23,111 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the EOSE quote page; the site-wide leaderboard is on the insider transactions hub.