As of the latest Form 4 filed Jul 7, 2026.
What Eos Energy Enterprises Inc insiders — officers, directors and 10% owners — have bought and sold in their own stock, straight from their SEC Form 4 filings. Values are shares × the reported transaction price where both are disclosed.
Buys plotted up, sells down; bar height is the disclosed dollar value (shares × reported price). Our Form 4 history is only complete from mid-2026, so early months are sparse — the series fills in as more filings land. Open-market purchases and sales only.
Newest filing first — the 45 most recent filings for EOSE.
| Filed | Trade date | Insider | Transaction | Shares | Price | Value | 10b5-1 | Filing |
|---|---|---|---|---|---|---|---|---|
| 2026-07-07 | 2026-07-07 | Kroeker Nathan CCO and Interim CFO | SSale | −79.3K | $4.68 | $371K | Yes (planned) | Form 4 ↗ |
| 2026-07-07 | 2026-07-06 | Mastrangelo Joe Chief Executive Officer | FTax | −121K | $5.06 | $613K | No | Form 4 ↗ |
| 2026-07-07 | 2026-07-05 | Kroeker Nathan CCO and Interim CFO | MExercise | +105K | $0.00 | $0.00 | Yes (planned) | Form 4 ↗ |
| 2026-07-07 | 2026-07-05 | Mastrangelo Joe Chief Executive Officer | MExercise | +254K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-07-07 | 2026-07-03 | Kroeker Nathan CCO and Interim CFO | MExercise | +53.6K | $0.00 | $0.00 | Yes (planned) | Form 4 ↗ |
| 2026-06-30 | 2026-06-30 | Puri Sumeet Chief Accounting Officer | SSale | −8.82K | $5.86 | $51.7K | Yes (planned) | Form 4 ↗ |
| 2026-06-30 | 2026-06-30 | Buczkowski Michelle Chief Administration Officer | SSale | −11.5K | $5.87 | $67.3K | Yes (planned) | Form 4 ↗ |
| 2026-06-30 | 2026-06-30 | Silberman Michael W Chief Legal Officer | SSale | −15.0K | $5.87 | $88.0K | Yes (planned) | Form 4 ↗ |
| 2026-06-30 | 2026-06-30 | Kroeker Nathan CCO and Interim CFO | SSale | −35.3K | $5.86 | $207K | Yes (planned) | Form 4 ↗ |
| 2026-06-30 | 2026-06-30 | Mastrangelo Joe Chief Executive Officer | FTax | −60.7K | $6.09 | $370K | No | Form 4 ↗ |
| 2026-06-30 | 2026-06-26 | Puri Sumeet Chief Accounting Officer | MExercise | +17.6K | $0.00 | $0.00 | Yes (planned) | Form 4 ↗ |
| 2026-06-30 | 2026-06-26 | Buczkowski Michelle Chief Administration Officer | MExercise | +22.9K | $0.00 | $0.00 | Yes (planned) | Form 4 ↗ |
| 2026-06-30 | 2026-06-26 | Silberman Michael W Chief Legal Officer | MExercise | +30.0K | $0.00 | $0.00 | Yes (planned) | Form 4 ↗ |
| 2026-06-30 | 2026-06-26 | Kroeker Nathan CCO and Interim CFO | MExercise | +70.6K | $0.00 | $0.00 | Yes (planned) | Form 4 ↗ |
| 2026-06-30 | 2026-06-26 | Mastrangelo Joe Chief Executive Officer | MExercise | +131K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-15 | 2026-06-12 | Mastrangelo Joe Chief Executive Officer | FTax | −117K | $6.06 | $707K | No | Form 4 ↗ |
| 2026-06-15 | 2026-06-12 | Mastrangelo Joe, Chief Executive Officer | MExercise | +200K | $1.34 | $268K | No | Form 4 ↗ |
| 2026-06-03 | 2026-06-02 | Nigro Joseph Director | MExercise | +3.56K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-06-03 | 2026-06-02 | Walters Marian Director | MExercise | +1.78K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-29 | 2026-05-28 | Walters Marian Director | SSale | −30.0K | $9.18 | $275K | No | Form 4 ↗ |
| 2026-05-29 | 2026-05-28 | Walters Marian, Director | MExercise | +30.0K | $1.18 | $35.4K | No | Form 4 ↗ |
| 2026-05-22 | 2026-05-20 | Walters Marian Director | SSale | −22.3K | $7.20 | $161K | No | Form 4 ↗ |
| 2026-05-22 | 2026-05-20 | Walters Marian, Director | MExercise | +22.3K | $1.18 | $26.3K | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | McNeil Jeff Director | MExercise | +23.1K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Bornstein Jeffrey S Director | DDisposition | −12.3K | $6.88 | $84.8K | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Bornstein Jeffrey S, Director | MExercise | +30.8K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Demby Claude Director | DDisposition | −9.24K | $6.88 | $63.6K | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Demby Claude, Director | MExercise | +23.1K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | DIMITRIEF ALEXANDER Director | DDisposition | −10.8K | $6.88 | $74.2K | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | DIMITRIEF ALEXANDER, Director | MExercise | +27.0K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Nixon Gregory S. Director | DDisposition | −9.24K | $6.88 | $63.6K | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Nixon Gregory S., Director | AAward | +23.1K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Walters Marian Director | MExercise | +23.1K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Walters Marian, Director | SSale | −7.68K | $7.07 | $54.3K | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Walters Marian, Director | MExercise | +7.68K | $1.18 | $9.06K | No | Form 4 ↗ |
| 2026-05-19 | 2026-05-19 | Urban David Director | MExercise | +23.1K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2026-03-10 | 2026-03-09 | Urban David Director | PPurchase | +16.3K | $6.16 | $100K | No | Form 4 ↗ |
| 2026-03-05 | 2026-03-04 | Mastrangelo Joe Chief Executive Officer | PPurchase | +23.9K | $6.58 | $157K | No | Form 4 ↗ |
| 2024-05-02 | 2024-04-30 | Bornstein Jeffrey S Director | MExercise | +32.3K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-05-02 | 2024-04-30 | Demby Claude Director | MExercise | +32.3K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-05-02 | 2024-04-30 | McNeil Jeff Director | MExercise | +36.2K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-05-02 | 2024-04-30 | Stidolph Russell Monoki Director | MExercise | +32.3K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-05-02 | 2024-04-30 | Zibelman Audrey Ann Director | MExercise | +32.3K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-05-02 | 2024-04-30 | Walters Marian Director | MExercise | +32.3K | $0.00 | $0.00 | No | Form 4 ↗ |
| 2024-05-02 | 2024-04-30 | DIMITRIEF ALEXANDER Director | MExercise | +32.3K | $0.00 | $0.00 | No | Form 4 ↗ |
Insiders — a company’s officers, directors and holders of more than 10% of its stock — must report any trade in that stock to the SEC on a Form 4 within two business days. Each row here is one transaction from those filings.
The transaction code tells you what happened: Purchase (P) and Sale (S) are open-market trades — the ones markets watch most; Award (A) is a granted stock or unit, Option exercise (M) converts options into shares, and Gift (G) is a transfer for no consideration. Awards, exercises and gifts are largely compensation or administrative, not a directional bet.
One caveat on sales: many are made under a Rule 10b5-1 plan scheduled months in advance, so a sale is not automatically a bearish signal. Insider activity is a noisy input — read it alongside the filings, not on its own.
See also EOSE’s full analysis or the market-wide insider trading feed. The tabs above jump to EOSE’s other SEC data.
Source: SEC Form 4 filings for EOSE, parsed from EDGAR. Transaction prices are as reported in the filing — SEC public-domain data, not market quotes. Values are shares × reported price where both are disclosed; grants and gifts often carry no price. A delayed record of what insiders reported, not a live position or a recommendation.
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