EOS Energy Enterprises (NASDAQ: EOSE) insider transactions
In the twelve months to 10 November 2026, executives and directors of EOS Energy Enterprises reported 24 open-market sales of 1,834,672 shares ($18.1m) and 6 open-market purchases of 130,150 shares ($751,662), by 11 people, according to the Form 4 filings they submitted to the SEC.
Latest transactions
| Date | Insider | Role | Transaction | Shares | Price | Held after | Filing |
|---|---|---|---|---|---|---|---|
| 29 October 2026 | Buczkowski Michelle | Chief Commercial Officer | Open-market sale, 10b5-1 plan | −50,000 | $2.00 | 111,827 | Form 4 |
| 28 October 2026 | Buczkowski Michelle | Chief Commercial Officer | Option exercise, 10b5-1 plan | +100,000 | — | 161,827 | Form 4 |
| 16 September 2026 | Mastrangelo Joe | Chief Executive Officer | Open-market sale, 10b5-1 plan | −250,000 | $3.92 | 2,308,704 | Form 4 |
| 16 September 2026 | Puri Sumeet | Chief Accounting Officer | Open-market sale, 10b5-1 plan | −43,750 | $3.92 | 280,195 | Form 4 |
| 14 September 2026 | Mastrangelo Joe | Chief Executive Officer | Grant or award, 10b5-1 plan | +500,000 | — | 2,558,704 | Form 4 |
| 14 September 2026 | Puri Sumeet | Chief Accounting Officer | Option exercise, 10b5-1 plan | +87,500 | — | 323,945 | Form 4 |
| 14 September 2026 | Song Haiyan | Director | Open-market purchase | +5,000 | $3.84 | 15,000 | Form 4 |
| 11 September 2026 | Song Haiyan | Director | Open-market purchase | +10,000 | $3.95 | 10,000 | Form 4 |
| 9 September 2026 | Puri Sumeet | Chief Accounting Officer | Open-market sale, 10b5-1 plan | −34,167 | $4.13 | 236,445 | Form 4 |
| 5 September 2026 | Puri Sumeet | Chief Accounting Officer | Option exercise, 10b5-1 plan | +68,333 | — | 270,612 | Form 4 |
| 28 July 2026 | Kroeker Nathan | Chief Commercial Officer | Open-market sale, 10b5-1 plan | −110,417 | $3.36 | 887,527 | Form 4 |
| 28 July 2026 | Puri Sumeet | Chief Accounting Officer | Open-market sale, 10b5-1 plan | −29,167 | $3.36 | 202,279 | Form 4 |
| 27 July 2026 | Mastrangelo Joe | Chief Executive Officer | Open-market sale | −159,154 | $3.61 | 1,947,586 | Form 4 |
| 25 July 2026 | Mastrangelo Joe | Chief Executive Officer | Option exercise | +333,334 | — | 2,106,740 | Form 4 |
| 25 July 2026 | Kroeker Nathan | Chief Commercial Officer | Option exercise, 10b5-1 plan | +220,834 | — | 997,944 | Form 4 |
| 25 July 2026 | Puri Sumeet | Chief Accounting Officer | Option exercise, 10b5-1 plan | +58,334 | — | 231,446 | Form 4 |
| 21 July 2026 | Kroeker Nathan | Chief Commercial Officer | Option exercise | +16,944 | $5.48 | 904,471 | Form 4 |
| 21 July 2026 | Demby Claude | Director | Option exercise | +1,825 | $5.48 | 157,400 | Form 4 |
| 21 July 2026 | Buczkowski Michelle | Chief Administration Officer | Option exercise | +2,585 | $5.48 | 61,827 | Form 4 |
| 21 July 2026 | Nigro Joseph | Director | Option exercise | +2,773 | $5.48 | 41,723 | Form 4 |
Names appear as in the filing, surname first. A dash in the price column means the filing reports none, as in grants and gifts.
How to read the table
Only open-market purchases and sales are trades the insider chose to make at the market price, and they are the ones counted in the summary above. Grants, option exercises and shares withheld for tax come from pay plans. A sale marked as a 10b5-1 plan was scheduled in advance under a written plan.
Where each row comes from
From the Form 4 that each executive, director or large shareholder must file with the SEC within two business days of a transaction, read up to 10 November 2026. Each row links to its filing on EDGAR. Only transactions in shares are listed, not derivatives, and amended filings are left out. The accounts of the company are on the EOS Energy Enterprises page; the method, in data sources.
Information prepared from the Form 4 filings submitted to the SEC, for information purposes only. It is not financial advice or a recommendation to buy or sell. Updated on 12 November 2026.