EOSE Eos Energy Enterprises, Inc.
Eos Energy Enterprises, Inc. (EOSE) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 17% planned / 83% discretionary
Largest single sale: $7.5M.
Where they traded
Last open-market purchase: March 9, 2026 , by Urban David .
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Puri Sumeet | Chief Accounting Officer | Sell 10b5-1 | 34,167 | $4.13 | $141.1K | 236,445 −12.6% of holding | |
| Kroeker Nathan | Chief Commercial Officer | Sell 10b5-1 | 110,417 | $3.36 | $371.0K | 887,527 −11.1% of holding | |
| Puri Sumeet | Chief Accounting Officer | Sell 10b5-1 | 29,167 | $3.36 | $98.0K | 202,279 −12.6% of holding | |
| Mastrangelo Joe | Chief Executive Officer | Sell | 159,154 | $3.61 | $574.5K | 1,947,586 −7.6% of holding | |
| Kroeker Nathan | CCO and Interim CFO | Sell 10b5-1 | 79,309 | $4.68 | $371.2K | 777,110 −9.3% of holding | |
| Kroeker Nathan | CCO and Interim CFO | Sell 10b5-1 | 35,289 | $5.86 | $206.8K | 697,801 −4.8% of holding | |
| Silberman Michael W | Chief Legal Officer | Sell 10b5-1 | 14,998 | $5.87 | $88.0K | 298,277 −4.8% of holding | |
| Buczkowski Michelle | Chief Administration Officer | Sell 10b5-1 | 11,469 | $5.87 | $67.3K | 59,242 −16.2% of holding | |
| Puri Sumeet | Chief Accounting Officer | Sell 10b5-1 | 8,823 | $5.86 | $51.7K | 173,112 −4.8% of holding | |
| Walters Marian | Director | Sell | 30,000 | $9.18 | $275.4K | 158,445 −15.9% of holding | |
| Walters Marian | Director | Sell | 22,319 | $7.20 | $160.7K | 158,445 −12.3% of holding | |
| Walters Marian | Director | Sell | 7,681 | $7.07 | $54.3K | 135,334 −5.4% of holding | |
| Urban David | Director | Buy | 16,250 | $6.16 | $100.1K | 62,471 | |
| Mastrangelo Joe | Chief Executive Officer | Buy | 23,900 | $6.58 | $157.3K | 1,487,126 | |
| Mastrangelo Joe | Chief Executive Officer | Buy | 60,000 | $5.75 | $345.0K | 1,463,226 | |
| DIMITRIEF ALEXANDER | Director | Buy | 15,000 | $6.04 | $90.6K | 235,221 | |
| Kroeker Nathan | CCO and Interim CFO | Sell 10b5-1 | 50,000 | $16.04 | $802.0K | 662,512 −7% of holding | |
| Silberman Michael W | Chief Legal Officer | Sell 10b5-1 | 41,667 | $17.74 | $739.2K | 283,279 −12.8% of holding | |
| Stidolph Russell Monoki 3 fills | Director | Sell | 266,134 | $14.94 | $4.0M | 2,123,273 −11.1% of holding | |
| Stidolph Russell Monoki | Director | Sell | 500,000 | $14.99 | $7.5M | 2,153,272 −18.8% of holding | |
| Bornstein Jeffrey S | Director | Sell | 32,328 | $15.05 | $486.5K | 115,759 −21.8% of holding | |
| Walters Marian | Director | Sell | 50,000 | $15.81 | $790.5K | 135,334 −27% of holding | |
| Bornstein Jeffrey S | Director | Sell | 8,000 | $15.75 | $126.0K | None left |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.