EOS ENERGY ENTERPRISES INC CLASS A (EOSE) — insider trading
Industrials · NASDAQ
EOS ENERGY ENTERPRISES INC CLASS A (EOSE) has 126 reported SEC Form 4 insider transactions in our data, including 2 open-market purchases and 11 open-market sales among the most recent 100 (latest 2026-09-16).
Recent Form 4 transactions
Showing the 100 most recent of 126 recorded transactions. See all on SEC EDGAR →
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-16 | Puri Sumeet | Officer (Chief Accounting Officer) | Open-market sale | 43,750 | $3.92 | $171.5K | Form 4 |
| 2026-09-16 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Open-market sale | 250,000 | $3.92 | $980.0K | Form 4 |
| 2026-09-14 | Puri Sumeet | Officer (Chief Accounting Officer) | Option exercise / conversion (derivative) | 87,500 | — | $0 | Form 4 |
| 2026-09-14 | Puri Sumeet | Officer (Chief Accounting Officer) | Option exercise / conversion | 87,500 | — | $0 | Form 4 |
| 2026-09-14 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Option exercise / conversion (derivative) | 500,000 | — | $0 | Form 4 |
| 2026-09-14 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Grant / award / vesting | 500,000 | — | $0 | Form 4 |
| 2026-09-14 | Song Haiyan | Director | Open-market purchase | 5,000 | $3.84 | $19.2K | Form 4 |
| 2026-09-11 | Song Haiyan | Director | Open-market purchase | 10,000 | $3.95 | $39.5K | Form 4 |
| 2026-09-09 | Puri Sumeet | Officer (Chief Accounting Officer) | Open-market sale | 34,167 | $4.13 | $141.1K | Form 4 |
| 2026-09-05 | Puri Sumeet | Officer (Chief Accounting Officer) | Option exercise / conversion (derivative) | 68,333 | — | $0 | Form 4 |
| 2026-09-05 | Puri Sumeet | Officer (Chief Accounting Officer) | Option exercise / conversion | 68,333 | — | $0 | Form 4 |
| 2026-08-24 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Grant / award / vesting (derivative) | 611,406 | — | $0 | Form 4 |
| 2026-08-24 | Lagi Alessandro | Officer (Chief Financial Officer) | Grant / award / vesting (derivative) | 195,130 | — | $0 | Form 4 |
| 2026-08-24 | Buczkowski Michelle | Officer (Chief Commercial Officer) | Grant / award / vesting (derivative) | 195,130 | — | $0 | Form 4 |
| 2026-08-24 | Puri Sumeet | Officer (Chief Accounting Officer) | Grant / award / vesting (derivative) | 65,044 | — | $0 | Form 4 |
| 2026-08-04 | Cerberus GP Manager LLC; CCM Frontier JV Holdco, LLC; CCM Frontier Power USA Holdings GP, LLC; CCM Frontier Power USA Holdings, LP | Director, 10% owner | Grant / award / vesting (derivative) | 20,017,772 | — | — | Form 4 |
| 2026-07-28 | Kroeker Nathan | Officer (Chief Commercial Officer) | Open-market sale | 110,417 | $3.36 | $371.0K | Form 4 |
| 2026-07-28 | Puri Sumeet | Officer (Chief Accounting Officer) | Open-market sale | 29,167 | $3.36 | $98.0K | Form 4 |
| 2026-07-27 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Open-market sale | 159,154 | $3.61 | $574.5K | Form 4 |
| 2026-07-25 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Option exercise / conversion (derivative) | 333,334 | — | $0 | Form 4 |
| 2026-07-25 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Option exercise / conversion | 333,334 | — | $0 | Form 4 |
| 2026-07-25 | Kroeker Nathan | Officer (Chief Commercial Officer) | Option exercise / conversion (derivative) | 220,834 | — | $0 | Form 4 |
| 2026-07-25 | Kroeker Nathan | Officer (Chief Commercial Officer) | Option exercise / conversion | 220,834 | — | $0 | Form 4 |
| 2026-07-25 | Puri Sumeet | Officer (Chief Accounting Officer) | Option exercise / conversion (derivative) | 58,334 | — | $0 | Form 4 |
| 2026-07-25 | Puri Sumeet | Officer (Chief Accounting Officer) | Option exercise / conversion | 58,334 | — | $0 | Form 4 |
| 2026-07-23 | DIMITRIEF ALEXANDER | Director | Grant / award / vesting (derivative) | 5,942 | — | $0 | Form 4 |
| 2026-07-23 | Walters Marian | Director | Grant / award / vesting (derivative) | 5,942 | — | $0 | Form 4 |
| 2026-07-23 | Nigro Joseph | Director | Grant / award / vesting (derivative) | 5,942 | — | $0 | Form 4 |
| 2026-07-21 | Kroeker Nathan | Officer (Chief Commercial Officer) | Option exercise / conversion (derivative) | 7,435 | — | $0 | Form 4 |
| 2026-07-21 | Kroeker Nathan | Officer (Chief Commercial Officer) | Option exercise / conversion (derivative) | 16,944 | — | $0 | Form 4 |
| 2026-07-21 | Kroeker Nathan | Officer (Chief Commercial Officer) | Option exercise / conversion | 16,944 | $5.48 | $92.9K | Form 4 |
| 2026-07-21 | Demby Claude | Director | Option exercise / conversion (derivative) | 801 | — | $0 | Form 4 |
| 2026-07-21 | Demby Claude | Director | Option exercise / conversion (derivative) | 1,825 | — | $0 | Form 4 |
| 2026-07-21 | Demby Claude | Director | Option exercise / conversion | 1,825 | $5.48 | $10.0K | Form 4 |
| 2026-07-21 | Buczkowski Michelle | Officer (Chief Administration Officer) | Option exercise / conversion (derivative) | 1,134 | — | $0 | Form 4 |
| 2026-07-21 | Buczkowski Michelle | Officer (Chief Administration Officer) | Option exercise / conversion (derivative) | 2,585 | — | $0 | Form 4 |
| 2026-07-21 | Buczkowski Michelle | Officer (Chief Administration Officer) | Option exercise / conversion | 2,585 | $5.48 | $14.2K | Form 4 |
| 2026-07-21 | Nigro Joseph | Director | Option exercise / conversion (derivative) | 1,217 | — | $0 | Form 4 |
| 2026-07-21 | Nigro Joseph | Director | Option exercise / conversion (derivative) | 2,773 | — | $0 | Form 4 |
| 2026-07-21 | Nigro Joseph | Director | Option exercise / conversion | 2,773 | $5.48 | $15.2K | Form 4 |
| 2026-07-21 | Urban David | Director | Option exercise / conversion (derivative) | 5,347 | — | $0 | Form 4 |
| 2026-07-21 | Urban David | Director | Option exercise / conversion (derivative) | 12,185 | — | $0 | Form 4 |
| 2026-07-21 | Urban David | Director | Option exercise / conversion | 12,185 | $5.48 | $66.8K | Form 4 |
| 2026-07-21 | Bornstein Jeffrey S | Director | Option exercise / conversion (derivative) | 4,194 | — | $0 | Form 4 |
| 2026-07-21 | Bornstein Jeffrey S | Director | Option exercise / conversion (derivative) | 9,558 | — | $0 | Form 4 |
| 2026-07-21 | Bornstein Jeffrey S | Director | Option exercise / conversion | 9,558 | $5.48 | $52.4K | Form 4 |
| 2026-07-21 | Walters Marian | Director | Option exercise / conversion (derivative) | 5,005 | — | $0 | Form 4 |
| 2026-07-21 | Walters Marian | Director | Option exercise / conversion (derivative) | 11,407 | — | $0 | Form 4 |
| 2026-07-21 | Walters Marian | Director | Option exercise / conversion | 11,407 | $5.48 | $62.5K | Form 4 |
| 2026-07-21 | DIMITRIEF ALEXANDER | Director | Option exercise / conversion (derivative) | 603 | — | $0 | Form 4 |
| 2026-07-21 | DIMITRIEF ALEXANDER | Director | Option exercise / conversion (derivative) | 7,853 | — | $0 | Form 4 |
| 2026-07-21 | DIMITRIEF ALEXANDER | Director | Option exercise / conversion (derivative) | 1,377 | — | $0 | Form 4 |
| 2026-07-21 | DIMITRIEF ALEXANDER | Director | Option exercise / conversion (derivative) | 17,897 | — | $0 | Form 4 |
| 2026-07-21 | DIMITRIEF ALEXANDER | Director | Option exercise / conversion | 1,377 | $5.48 | $7.5K | Form 4 |
| 2026-07-21 | DIMITRIEF ALEXANDER | Director | Option exercise / conversion | 17,897 | $5.48 | $98.1K | Form 4 |
| 2026-07-21 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Option exercise / conversion (derivative) | 48,758 | — | $0 | Form 4 |
| 2026-07-21 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Option exercise / conversion (derivative) | 111,118 | — | $0 | Form 4 |
| 2026-07-21 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Option exercise / conversion | 111,118 | $5.48 | $608.9K | Form 4 |
| 2026-07-13 | Martin Marie Batz | Officer (Chief Legal Officer) | Grant / award / vesting (derivative) | 216,731 | — | $0 | Form 4 |
| 2026-07-13 | Song Haiyan | Director | Grant / award / vesting (derivative) | 29,980 | — | $0 | Form 4 |
| 2026-07-07 | Kroeker Nathan | Officer (CCO and Interim CFO) | Open-market sale | 79,309 | $4.68 | $371.2K | Form 4 |
| 2026-07-06 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Shares withheld for taxes / exercise cost | 121,245 | $5.06 | $613.5K | Form 4 |
| 2026-07-05 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Option exercise / conversion (derivative) | 254,304 | — | $0 | Form 4 |
| 2026-07-05 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Option exercise / conversion | 254,304 | — | $0 | Form 4 |
| 2026-07-05 | Kroeker Nathan | Officer (CCO and Interim CFO) | Option exercise / conversion (derivative) | 105,008 | — | $0 | Form 4 |
| 2026-07-05 | Kroeker Nathan | Officer (CCO and Interim CFO) | Option exercise / conversion | 105,008 | — | $0 | Form 4 |
| 2026-07-03 | Kroeker Nathan | Officer (CCO and Interim CFO) | Option exercise / conversion (derivative) | 53,610 | — | $0 | Form 4 |
| 2026-07-03 | Kroeker Nathan | Officer (CCO and Interim CFO) | Option exercise / conversion | 53,610 | — | $0 | Form 4 |
| 2026-06-30 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Shares withheld for taxes / exercise cost | 60,703 | $6.09 | $369.7K | Form 4 |
| 2026-06-30 | Kroeker Nathan | Officer (CCO and Interim CFO) | Open-market sale | 35,289 | $5.86 | $206.8K | Form 4 |
| 2026-06-30 | Silberman Michael W | Officer (Chief Legal Officer) | Open-market sale | 14,998 | $5.87 | $88.0K | Form 4 |
| 2026-06-30 | Buczkowski Michelle | Officer (Chief Administration Officer) | Open-market sale | 11,469 | $5.87 | $67.3K | Form 4 |
| 2026-06-30 | Puri Sumeet | Officer (Chief Accounting Officer) | Open-market sale | 8,823 | $5.86 | $51.7K | Form 4 |
| 2026-06-26 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Option exercise / conversion (derivative) | 130,570 | — | $0 | Form 4 |
| 2026-06-26 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Option exercise / conversion | 130,570 | — | $0 | Form 4 |
| 2026-06-26 | Kroeker Nathan | Officer (CCO and Interim CFO) | Option exercise / conversion (derivative) | 70,578 | — | $0 | Form 4 |
| 2026-06-26 | Kroeker Nathan | Officer (CCO and Interim CFO) | Option exercise / conversion | 70,578 | — | $0 | Form 4 |
| 2026-06-26 | Silberman Michael W | Officer (Chief Legal Officer) | Option exercise / conversion (derivative) | 29,996 | — | $0 | Form 4 |
| 2026-06-26 | Silberman Michael W | Officer (Chief Legal Officer) | Option exercise / conversion | 29,996 | — | $0 | Form 4 |
| 2026-06-26 | Buczkowski Michelle | Officer (Chief Administration Officer) | Option exercise / conversion (derivative) | 22,938 | — | $0 | Form 4 |
| 2026-06-26 | Buczkowski Michelle | Officer (Chief Administration Officer) | Option exercise / conversion | 22,938 | — | $0 | Form 4 |
| 2026-06-26 | Puri Sumeet | Officer (Chief Accounting Officer) | Option exercise / conversion (derivative) | 17,545 | — | $0 | Form 4 |
| 2026-06-26 | Puri Sumeet | Officer (Chief Accounting Officer) | Option exercise / conversion | 17,645 | — | $0 | Form 4 |
| 2026-06-12 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Option exercise / conversion (derivative) | 200,000 | — | $0 | Form 4 |
| 2026-06-12 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Shares withheld for taxes / exercise cost | 116,646 | $6.06 | $706.9K | Form 4 |
| 2026-06-12 | Mastrangelo Joe | Director, Officer (Chief Executive Officer) | Option exercise / conversion | 200,000 | $1.34 | $268.0K | Form 4 |
| 2026-06-08 | Lagi Alessandro | Officer (Chief Financial Officer) | Grant / award / vesting (derivative) | 277,773 | — | $0 | Form 4 |
| 2026-06-05 | DIMITRIEF ALEXANDER | Director | Grant / award / vesting (derivative) | 21,253 | — | $0 | Form 4 |
| 2026-06-05 | Nixon Gregory S. | Director | Grant / award / vesting (derivative) | 18,217 | — | $0 | Form 4 |
| 2026-06-05 | Urban David | Director | Grant / award / vesting (derivative) | 18,217 | — | $0 | Form 4 |
| 2026-06-05 | Walters Marian | Director | Grant / award / vesting (derivative) | 21,253 | — | $0 | Form 4 |
| 2026-06-05 | Demby Claude | Director | Grant / award / vesting (derivative) | 18,217 | — | $0 | Form 4 |
| 2026-06-05 | McNeil Jeff | Director | Grant / award / vesting (derivative) | 18,217 | — | $0 | Form 4 |
| 2026-06-05 | Nigro Joseph | Director | Grant / award / vesting (derivative) | 24,289 | — | $0 | Form 4 |
| 2026-06-05 | Bornstein Jeffrey S | Director | Grant / award / vesting (derivative) | 24,289 | — | $0 | Form 4 |
| 2026-06-02 | Walters Marian | Director | Option exercise / conversion (derivative) | 1,782 | — | $0 | Form 4 |
| 2026-06-02 | Walters Marian | Director | Option exercise / conversion | 1,782 | — | $0 | Form 4 |
| 2026-06-02 | Nigro Joseph | Director | Option exercise / conversion (derivative) | 3,565 | — | $0 | Form 4 |
| 2026-06-02 | Nigro Joseph | Director | Option exercise / conversion | 3,565 | — | $0 | Form 4 |
| 2026-05-28 | Walters Marian | Director | Option exercise / conversion (derivative) | 30,000 | — | $0 | Form 4 |
Ask the chat about EOSE's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: EOS ENERGY ENTERPRISES INC CLASS A (EOSE).
Last updated 2026-09-16 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.