Eos Energy Enterprises, Inc.
A maker of long-duration energy storage systems, Eos builds big zinc-based batteries that utilities and industrial customers use to store power on the grid. Founded in 2008, its battery line carries the name Znyth, a mashup of the element symbol for zinc (Zn) and the word "zenith," or highest point. Its batteries are water-based and non-flammable, made from abundant, recyclable materials, and built in the United States.
Granted 434.0K · Sold 766.1K
Granted 1.89M · Bought 173.2K · Sold 564.2K
Granted 1.26M · Sold 408.9K
Granted 138.3K
Granted 548.1K · Sold 223.2K
Granted 169.9K · Bought 25.0K · Sold 45.0K
Granted 168.4K · Sold 203.0K
Granted 294.9K · Sold 103.0K
Granted 264.6K · Sold 160.0K
Granted 134.4K · Sold 20.1K
Granted 204.7K
Granted 32.3K
Granted 69.3K · Bought 16.3K
Granted 22.9K · Sold 11.5K
Granted 39.0K
Granted 23.1K
Granted 7
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Stidolph Russell MonokiDirector · 17 transactions | — | 5.17M | 434.0K | — | 766.1K |
| Mastrangelo JoeChief Executive Officer, Director · 18 transactions | +195.9% | 1.64M | 1.89M | 173.2K | 564.2K |
| Kroeker NathanCCO and Interim CFO · 22 transactions | +17345% | 697.8K | 1.26M | — | 408.9K |
| McNeil JeffDirector · 4 transactions | — | 576.8K | 138.3K | — | — |
| Silberman Michael WChief Legal Officer · 10 transactions | — | 298.3K | 548.1K | — | 223.2K |
| Dimitrief AlexanderDirector · 12 transactions | +94.4% | 272.2K | 169.9K | 25.0K | 45.0K |
| Bornstein Jeffrey SDirector · 9 transactions | — | 263.8K | 168.4K | — | 203.0K |
| Puri SumeetChief Accounting Officer · 11 transactions | — | 173.1K | 294.9K | — | 103.0K |
| Walters MarianDirector · 15 transactions | — | 170.2K | 264.6K | — | 160.0K |
| Demby ClaudeDirector · 6 transactions | +100.6% | 164.8K | 134.4K | — | 20.1K |
| Berube MelissaGeneral Counsel · 4 transactions | +118.3% | 123.4Kas of Jan 2024 | 204.7K | — | — |
| Zibelman Audrey AnnDirector · 1 transaction | +44.5% | 104.9Kas of Apr 2024 | 32.3K | — | — |
| Urban DavidDirector · 3 transactions | — | 85.6K | 69.3K | 16.3K | — |
| Buczkowski MichelleChief Administration Officer · 2 transactions | — | 59.2K | 22.9K | — | 11.5K |
| Nigro JosephDirector · 2 transactions | — | 39.0K | 39.0K | — | — |
| Nixon Gregory S.Director · 2 transactions | — | 23.1K | 23.1K | — | — |
| CCM Denali Equity Holdings GP, LLC +2 co-filersDirector, 10% owner · 3 transactions | — | 59as of Sep 2024 | 7 | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 3 years: -2.29M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.