Company · CIK 0001805077 · SIC 3690 — Miscellaneous Electrical Machinery, Equipment & Supplies · Nasdaq
Eos Energy Enterprises, Inc. · EOSE
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 16, 2026 SForm 4 → | Sep 16, 4:28 pm EDT | Sumeet PuriChief Accounting Officer | 43,750 | $3.92 | $171,500 | 280,195 | −13.5% | 10b5-1 |
| Sep 16, 2026 SForm 4 → | Sep 16, 4:27 pm EDT | Joe MastrangeloChief Executive Officer, Director | 250,000 | $3.92 | $980,000 | 2,308,704 | −9.77% | 10b5-1 |
| Sep 14, 2026 MForm 4 → | Sep 16, 4:28 pm EDT | Sumeet PuriChief Accounting Officer | 87,500 | — | — | 323,945 | — | 10b5-1 |
| Sep 14, 2026 AForm 4 → | Sep 16, 4:27 pm EDT | Joe MastrangeloChief Executive Officer, Director | 500,000 | — | — | 2,558,704 | — | 10b5-1 |
| Sep 11, 2026 PForm 4 → | Sep 15, 8:56 am EDT | Haiyan SongDirector | 15,000 | $3.91 | $58,700 | 15,000 | — | |
| Sep 9, 2026 SForm 4 → | Sep 9, 6:05 pm EDT | Sumeet PuriChief Accounting Officer | 34,167 | $4.13 | $141,110 | 236,445 | −12.6% | 10b5-1 |
| Sep 5, 2026 MForm 4 → | Sep 9, 6:05 pm EDT | Sumeet PuriChief Accounting Officer | 68,333 | — | — | 270,612 | — | 10b5-1 |
| Jul 28, 2026 SForm 4 → | Jul 28, 5:03 pm EDT | Sumeet PuriChief Accounting Officer | 29,167 | $3.36 | $98,001 | 202,279 | −12.6% | 10b5-1 |
| Jul 28, 2026 SForm 4 → | Jul 28, 5:02 pm EDT | Nathan KroekerChief Commercial Officer | 110,417 | $3.36 | $371,001 | 887,527 | −11.1% | 10b5-1 |
| Jul 27, 2026 SForm 4 → | Jul 28, 5:02 pm EDT | Joe MastrangeloChief Executive Officer, Director | 159,154 | $3.61 | $574,546 | 1,947,586 | −7.55% | |
| Jul 25, 2026 MForm 4 → | Jul 28, 5:03 pm EDT | Sumeet PuriChief Accounting Officer | 58,334 | — | — | 231,446 | — | 10b5-1 |
| Jul 25, 2026 MForm 4 → | Jul 28, 5:02 pm EDT | Nathan KroekerChief Commercial Officer | 220,834 | — | — | 997,944 | — | 10b5-1 |
| Jul 25, 2026 MForm 4 → | Jul 28, 5:02 pm EDT | Joe MastrangeloChief Executive Officer, Director | 333,334 | — | — | 2,106,740 | — | |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:14 am EDT | Joe MastrangeloChief Executive Officer, Director | 111,118 | $5.48 | $608,927 | 2,058,704 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:12 am EDT | Alexander DimitriefDirector | 19,274 | $5.48 | $105,622 | 11,377 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:11 am EDT | Marian WaltersDirector | 11,407 | $5.48 | $62,510 | 171,634 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:10 am EDT | Jeffrey S BornsteinDirector | 9,558 | $5.48 | $52,378 | 143,806 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:08 am EDT | David UrbanDirector | 12,185 | $5.48 | $66,774 | 97,767 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:06 am EDT | Joseph NigroDirector | 2,773 | $5.48 | $15,196 | 41,723 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:05 am EDT | Michelle BuczkowskiChief Administration Officer | 2,585 | $5.48 | $14,166 | 61,827 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:03 am EDT | Claude DembyDirector | 1,825 | $5.48 | $10,001 | 157,400 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:02 am EDT | Nathan KroekerChief Commercial Officer | 16,944 | $5.48 | $92,853 | 904,471 | — | late |
| Jul 7, 2026 SForm 4 → | Jul 7, 5:20 pm EDT | Nathan KroekerCCO and Interim CFO | 79,309 | $4.68 | $371,166 | 777,110 | −9.26% | 10b5-1 |
| Jul 5, 2026 FMForm 4 → | Jul 7, 5:18 pm EDT | Joe MastrangeloChief Executive Officer, Director | 375,549 | $5.06 | $613,500 | 1,773,406 | — | |
| Jul 3, 2026 MForm 4 → | Jul 7, 5:20 pm EDT | Nathan KroekerCCO and Interim CFO | 158,618 | — | — | 856,419 | — | 10b5-1 |
| Jun 30, 2026 SForm 4 → | Jun 30, 5:07 pm EDT | Sumeet PuriChief Accounting Officer | 8,823 | $5.86 | $51,703 | 173,112 | −4.85% | 10b5-1 |
| Jun 30, 2026 SForm 4 → | Jun 30, 5:07 pm EDT | Michelle BuczkowskiChief Administration Officer | 11,469 | $5.87 | $67,323 | 59,242 | −16.2% | 10b5-1 |
| Jun 30, 2026 SForm 4 → | Jun 30, 5:06 pm EDT | Michael W SilbermanChief Legal Officer | 14,998 | $5.87 | $88,038 | 298,277 | −4.79% | 10b5-1 |
| Jun 30, 2026 SForm 4 → | Jun 30, 5:05 pm EDT | Nathan KroekerCCO and Interim CFO | 35,289 | $5.86 | $206,794 | 697,801 | −4.81% | 10b5-1 |
| Jun 26, 2026 MForm 4 → | Jun 30, 5:07 pm EDT | Sumeet PuriChief Accounting Officer | 17,645 | — | — | 181,935 | — | 10b5-1 |
| Jun 26, 2026 MForm 4 → | Jun 30, 5:07 pm EDT | Michelle BuczkowskiChief Administration Officer | 22,938 | — | — | 70,711 | — | 10b5-1 |
| Jun 26, 2026 MForm 4 → | Jun 30, 5:06 pm EDT | Michael W SilbermanChief Legal Officer | 29,996 | — | — | 313,275 | — | 10b5-1 |
| Jun 26, 2026 MForm 4 → | Jun 30, 5:05 pm EDT | Nathan KroekerCCO and Interim CFO | 70,578 | — | — | 733,090 | — | 10b5-1 |
| Jun 26, 2026 FMForm 4 → | Jun 30, 5:05 pm EDT | Joe MastrangeloChief Executive Officer, Director | 191,273 | $6.09 | $369,681 | 1,640,347 | — | |
| Jun 12, 2026 FMForm 4 → | Jun 15, 9:15 am EDT | Joe MastrangeloChief Executive Officer, Director | 316,646 | $3.08 | $974,875 | 1,570,480 | — | |
| Jun 2, 2026 MForm 4 → | Jun 3, 4:55 pm EDT | Joseph NigroDirector | 3,565 | — | — | 38,950 | — | |
| Jun 2, 2026 MForm 4 → | Jun 3, 4:53 pm EDT | Marian WaltersDirector | 1,782 | — | — | 160,227 | — |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 14, 2026 MForm 4 → | Sep 16, 4:28 pm EDT | Sumeet PuriChief Accounting Officer | 87,500 | — | — | 0 | — | 10b5-1 |
| Sep 14, 2026 MForm 4 → | Sep 16, 4:27 pm EDT | Joe MastrangeloChief Executive Officer, Director | 500,000 | — | — | 0 | — | 10b5-1 |
| Sep 5, 2026 MForm 4 → | Sep 9, 6:05 pm EDT | Sumeet PuriChief Accounting Officer | 68,333 | — | — | 0 | — | 10b5-1 |
| Aug 24, 2026 AForm 4 → | Aug 26, 4:06 pm EDT | Sumeet PuriChief Accounting Officer | 65,044 | — | — | 65,044 | — | |
| Aug 24, 2026 AForm 4 → | Aug 26, 4:06 pm EDT | Michelle BuczkowskiChief Commercial Officer | 195,130 | — | — | 195,130 | — | |
| Aug 24, 2026 AForm 4 → | Aug 26, 4:05 pm EDT | Alessandro LagiChief Financial Officer | 195,130 | — | — | 195,130 | — | |
| Aug 24, 2026 AForm 4 → | Aug 26, 4:03 pm EDT | Joe MastrangeloChief Executive Officer, Director | 611,406 | — | — | 611,406 | — | |
| Aug 4, 2026 AForm 4 → | Aug 6, 5:16 pm EDT | Cerberus GP Manager LLC +3Director, 10% Owner | 20,017,772 | — | — | 20,017,772 | — | |
| Jul 25, 2026 MForm 4 → | Jul 28, 5:03 pm EDT | Sumeet PuriChief Accounting Officer | 58,334 | — | — | 58,333 | — | 10b5-1 |
| Jul 25, 2026 MForm 4 → | Jul 28, 5:02 pm EDT | Nathan KroekerChief Commercial Officer | 220,834 | — | — | 220,833 | — | 10b5-1 |
| Jul 25, 2026 MForm 4 → | Jul 28, 5:02 pm EDT | Joe MastrangeloChief Executive Officer, Director | 333,334 | — | — | 333,333 | — | |
| Jul 23, 2026 AForm 4 → | Jul 27, 5:17 pm EDT | Joseph NigroDirector | 5,942 | — | — | 5,942 | — | |
| Jul 23, 2026 AForm 4 → | Jul 27, 5:16 pm EDT | Marian WaltersDirector | 5,942 | — | — | 5,942 | — | |
| Jul 23, 2026 AForm 4 → | Jul 27, 5:14 pm EDT | Alexander DimitriefDirector | 5,942 | — | — | 5,942 | — | |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:14 am EDT | Joe MastrangeloChief Executive Officer, Director | 159,876 | — | — | 48,758 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:12 am EDT | Alexander DimitriefDirector | 27,730 | — | — | 603 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:11 am EDT | Marian WaltersDirector | 16,412 | — | — | 5,005 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:10 am EDT | Jeffrey S BornsteinDirector | 13,752 | — | — | 4,194 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:08 am EDT | David UrbanDirector | 17,532 | — | — | 5,347 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:06 am EDT | Joseph NigroDirector | 3,990 | — | — | 1,217 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:05 am EDT | Michelle BuczkowskiChief Administration Officer | 3,719 | — | — | 1,134 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:03 am EDT | Claude DembyDirector | 2,626 | — | — | 801 | — | late |
| Jul 21, 2026 MForm 4 → | Aug 6, 8:02 am EDT | Nathan KroekerChief Commercial Officer | 24,379 | — | — | 7,435 | — | late |
| Jul 13, 2026 AForm 4 → | Jul 15, 5:01 pm EDT | Haiyan SongDirector | 29,980 | — | — | 29,980 | — | |
| Jul 13, 2026 AForm 4 → | Jul 15, 4:57 pm EDT | Marie Batz MartinChief Legal Officer | 216,731 | — | — | 216,731 | — | |
| Jul 5, 2026 MForm 4 → | Jul 7, 5:18 pm EDT | Joe MastrangeloChief Executive Officer, Director | 254,304 | — | — | 0 | — | |
| Jul 3, 2026 MForm 4 → | Jul 7, 5:20 pm EDT | Nathan KroekerCCO and Interim CFO | 158,618 | — | — | 0 | — | 10b5-1 |
| Jun 26, 2026 MForm 4 → | Jun 30, 5:07 pm EDT | Sumeet PuriChief Accounting Officer | 17,545 | — | — | 35,389 | — | 10b5-1 |
| Jun 26, 2026 MForm 4 → | Jun 30, 5:07 pm EDT | Michelle BuczkowskiChief Administration Officer | 22,938 | — | — | 45,876 | — | 10b5-1 |
| Jun 26, 2026 MForm 4 → | Jun 30, 5:06 pm EDT | Michael W SilbermanChief Legal Officer | 29,996 | — | — | 59,991 | — | 10b5-1 |
| Jun 26, 2026 MForm 4 → | Jun 30, 5:05 pm EDT | Nathan KroekerCCO and Interim CFO | 70,578 | — | — | 141,157 | — | 10b5-1 |
| Jun 26, 2026 MForm 4 → | Jun 30, 5:05 pm EDT | Joe MastrangeloChief Executive Officer, Director | 130,570 | — | — | 261,140 | — | |
| Jun 12, 2026 MForm 4 → | Jun 15, 9:15 am EDT | Joe MastrangeloChief Executive Officer, Director | 200,000 | — | — | 0 | — | |
| Jun 8, 2026 AForm 4 → | Jun 9, 4:19 pm EDT | Alessandro LagiChief Financial Officer | 277,773 | — | — | 277,773 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 4:27 pm EDT | Jeffrey S BornsteinDirector | 24,289 | — | — | 24,289 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 4:26 pm EDT | Joseph NigroDirector | 24,289 | — | — | 24,289 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 4:24 pm EDT | Jeff McNeilDirector | 18,217 | — | — | 18,217 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 4:24 pm EDT | Claude DembyDirector | 18,217 | — | — | 18,217 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 4:23 pm EDT | Marian WaltersDirector | 21,253 | — | — | 21,253 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 4:22 pm EDT | David UrbanDirector | 18,217 | — | — | 18,217 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 4:22 pm EDT | Gregory S. NixonDirector | 18,217 | — | — | 18,217 | — | |
| Jun 5, 2026 AForm 4 → | Jun 9, 4:21 pm EDT | Alexander DimitriefDirector | 21,253 | — | — | 21,253 | — | |
| Jun 2, 2026 MForm 4 → | Jun 3, 4:55 pm EDT | Joseph NigroDirector | 3,565 | — | — | 0 | — | |
| Jun 2, 2026 MForm 4 → | Jun 3, 4:53 pm EDT | Marian WaltersDirector | 1,782 | — | — | 0 | — |