15 insiders reported 129 Form 4 transactions for Eos Energy Enterprises, Inc. (EOSE) over the past 18 months (most recent 2026-09-16). Recent activity: Mastrangelo Joe (Chief Executive Officer) Buy 500,000 shares, Puri Sumeet (Chief Accounting Officer) Buy 87,500 shares, Mastrangelo Joe (Chief Executive Officer) Sell 250,000 shares, Puri Sumeet (Chief Accounting Officer) Sell 43,750 shares, Song Haiyan (Director) Buy 10,000 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-16 | Mastrangelo Joe | Chief Executive Officer | Buy | 500,000 | $0 |
| 2026-09-16 | Puri Sumeet | Chief Accounting Officer | Buy | 87,500 | $0 |
| 2026-09-16 | Mastrangelo Joe | Chief Executive Officer | Sell | 250,000 | $980,000 |
| 2026-09-16 | Puri Sumeet | Chief Accounting Officer | Sell | 43,750 | $171,500 |
| 2026-09-15 | Song Haiyan | Director | Buy | 10,000 | $39,500 |
| 2026-09-15 | Song Haiyan | Director | Buy | 5,000 | $19,200 |
| 2026-09-09 | Puri Sumeet | Chief Accounting Officer | Buy | 68,333 | $0 |
| 2026-09-09 | Puri Sumeet | Chief Accounting Officer | Sell | 34,167 | $141,110 |
| 2026-08-06 | Urban David | Director | Buy | 12,185 | $66,774 |
| 2026-08-06 | Kroeker Nathan | Chief Commercial Officer | Buy | 16,944 | $92,853 |
| 2026-08-06 | DIMITRIEF ALEXANDER | Director | Buy | 17,897 | $98,076 |
| 2026-08-06 | Nigro Joseph | Director | Buy | 2,773 | $15,196 |
| 2026-08-06 | Bornstein Jeffrey S | Director | Buy | 9,558 | $52,378 |
| 2026-08-06 | Walters Marian | Director | Buy | 11,407 | $62,510 |
| 2026-08-06 | Mastrangelo Joe | Chief Executive Officer | Buy | 111,118 | $608,927 |
| 2026-08-06 | Demby Claude | Director | Buy | 1,825 | $10,001 |
| 2026-08-06 | Buczkowski Michelle | Chief Administration Officer | Buy | 2,585 | $14,166 |
| 2026-08-06 | DIMITRIEF ALEXANDER | Director | Buy | 1,377 | $7,546 |
| 2026-07-28 | Kroeker Nathan | Chief Commercial Officer | Buy | 220,834 | $0 |
| 2026-07-28 | Mastrangelo Joe | Chief Executive Officer | Buy | 333,334 | $0 |
| 2026-07-28 | Puri Sumeet | Chief Accounting Officer | Buy | 58,334 | $0 |
| 2026-07-28 | Kroeker Nathan | Chief Commercial Officer | Sell | 110,417 | $371,001 |
| 2026-07-28 | Mastrangelo Joe | Chief Executive Officer | Sell | 159,154 | $574,546 |
| 2026-07-28 | Puri Sumeet | Chief Accounting Officer | Sell | 29,167 | $98,001 |
| 2026-07-07 | Kroeker Nathan | CCO and Interim CFO | Buy | 53,610 | $0 |
Source: SEC Form 4 filings · as of 2026-09-16