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.
Sold 254.7K
Sold 272.3K
Sold 396.2K
Granted 546.4K · Bought 151.3K · Sold 766.1K
Granted 2.39M · Bought 374.4K · Sold 564.2K
Granted 3.8K · Bought 25.0K · Sold 993.8K
Granted 1.26M · Bought 4.0K · Sold 408.9K
Granted 138.3K
Granted 548.1K · Sold 223.2K
Granted 259.7K · Bought 50.0K · Sold 45.0K
Granted 221.0K · Bought 20.0K · Sold 203.0K
Granted 104.5K · Bought 113.5K
Granted 294.9K · Sold 103.0K
Granted 332.0K · Bought 5.0K · Sold 160.0K
Granted 203.3K · Bought 13.2K · Sold 20.1K
Granted 279.7K · Bought 2.6K
Granted 99.6K · Bought 50
Granted 69.3K · Bought 16.3K
Granted 100.0K
Granted 22.9K · Sold 11.5K
Granted 39.0K
Granted 16.7K · Bought 7.0K
Granted 23.1K
Granted 7
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| AltEnergy Storage Bridge LLC +7 co-filers10% owner, Director · 4 transactions | — | 25.30Mas of Dec 2021 | — | — | — |
| Riley Bryant R +8 co-filers10% owner · 12 transactions | — | 9.91Mas of Sep 2021 | — | — | 254.7K |
| Riley Bryant R +5 co-filers10% owner · 7 transactions | — | 5.77Mas of Oct 2021 | — | — | 272.3K |
| Riley Bryant R +2 co-filers10% owner · 6 transactions | — | 5.37Mas of Aug 2022 | — | — | 396.2K |
| Stidolph Russell MonokiDirector · 22 transactions | — | 5.17M | 546.4K | 151.3K | 766.1K |
| Mastrangelo JoeChief Executive Officer, Director · 26 transactions | +1962.1% | 1.64M | 2.39M | 374.4K | 564.2K |
| Shribman DanielFormer Director · 6 transactions | — | 1.06Mas of Nov 2022 | 3.8K | 25.0K | 993.8K |
| Kroeker NathanCCO and Interim CFO · 23 transactions | — | 697.8K | 1.26M | 4.0K | 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 · 17 transactions | — | 272.2K | 259.7K | 50.0K | 45.0K |
| Bornstein Jeffrey SDirector · 11 transactions | — | 263.8K | 221.0K | 20.0K | 203.0K |
| Gonzales Randall BChief Financial Officer · 4 transactions | — | 188.1Kas of Jan 2023 | 104.5K | 113.5K | — |
| Puri SumeetChief Accounting Officer · 11 transactions | — | 173.1K | 294.9K | — | 103.0K |
| Walters MarianDirector · 18 transactions | — | 170.2K | 332.0K | 5.0K | 160.0K |
| Demby ClaudeDirector · 9 transactions | — | 164.8K | 203.3K | 13.2K | 20.1K |
| Berube MelissaGeneral Counsel · 11 transactions | — | 123.4Kas of Jan 2024 | 279.7K | 2.6K | — |
| Zibelman Audrey AnnDirector · 4 transactions | +1918% | 104.9Kas of Apr 2024 | 99.6K | 50 | — |
| Urban DavidDirector · 3 transactions | — | 85.6K | 69.3K | 16.3K | — |
| Kurada SagarChief Financial officer · 4 transactions | — | 66.9Kas of Jan 2022 | 100.0K | — | — |
| Buczkowski MichelleChief Administration Officer · 2 transactions | — | 59.2K | 22.9K | — | 11.5K |
| Nigro JosephDirector · 2 transactions | — | 39.0K | 39.0K | — | — |
| Tedone John JChief Accounting Officer · 3 transactions | — | 31.7Kas of Feb 2023 | 16.7K | 7.0K | — |
| 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 | — | — |
| Spring Creek Capital LLC10% owner · 1 transaction | — | 0as of May 2022 | — | — | — |
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 5 years: -3.64M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.