Eos Energy Enterprises
Builds zinc-based battery systems and controls for multi-hour grid and industrial storage.
$3.27
After-hours close+0.00 (+0.15%)
At close$3.27(−4.53%)
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Breakdown13F · Form 4
Institutions 80.34%232.64M sharesInsiders 2.44%7.05M sharesOther 17.22%49.87M shares
Shares outstanding 289.57M · Float 284.35M · 98.2% free float
Institutions13F, as of Jun 30, 2026
400 holders · 232.64M shares · 77 new positions · 217 increased · 101 reduced · 45 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 27.13M | 9.37% | +3.05M | Aug 7, 2026 |
| Vanguard Capital Management LLC | 15.02M | 5.19% | +186.0K | Aug 13, 2026 |
| Hudson Bay Capital Management LP | 13.68M | 4.73% | +13.68Mnew | Aug 14, 2026 |
| Driehaus Capital Management LLC | 13.56M | 4.68% | −1.31M | Aug 14, 2026 |
| Two Sigma Investments, LP | 12.78M | 4.41% | −1.29M | Aug 14, 2026 |
| State Street Corp | 10.15M | 3.51% | +2.14M | Aug 7, 2026 |
| Susquehanna International Group, LLP | 9.68M | 3.34% | +3.33M | Aug 14, 2026 |
| Geode Capital Management, LLC | 8.89M | 3.07% | +1.08M | Aug 12, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Cerberus Capital Management II, L.P.incl. Cerberus GP Manager LLC, CCM Frontier Power USA Holdings GP, LLC +4 more | 32.60% | 175.83M | 13D | Aug 6, 2026 ↗ |
| BlackRock, Inc. | 6.50% | 16.04M | 13G | Jul 17, 2025 ↗ |
| Legal & General Group Plc | 5.40% | 2.90M | 13G | Jul 8, 2025 ↗ |
| Vanguard Capital Management | 5.07% | 17.24M | 13G | Apr 29, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Russell Monoki Stidolph | director | 2.49M | 0.86% | Dec 8, 2025 |
| Joe Mastrangelo | director, officer: Chief Executive Officer | 2.06M | 0.71% | Aug 6, 2026 |
| Nathan Kroeker | officer: Chief Commercial Officer | 904.5K | 0.31% | Aug 6, 2026 |
| Michael W. Silberman | officer: Chief Legal Officer | 298.3K | 0.10% | Jun 30, 2026 |
| Alexander Dimitrief | director | 280.7K | 0.10% | Aug 6, 2026 |
| Sumeet Puri | officer: Chief Accounting Officer | 202.3K | 0.07% | Jul 28, 2026 |
| Marian Walters | director | 171.6K | 0.06% | Aug 6, 2026 |
| Claude Demby | director | 157.4K | 0.05% | Aug 6, 2026 |
| Jeffrey S. Bornstein | director | 143.8K | 0.05% | Aug 6, 2026 |
| Jeff McNeil | director | 122.3K | 0.04% | May 19, 2026 |
1 ten-percent owner holds 8.59M shares by Form 4, outside the officers-and-directors figure above · 8 people have not refiled in the last 18 months (6.85M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Jul 27, 2026 | Joe Mastrangelodirector, officer: Chief Executive Officer | Sale | 159,154 | $3.61 | 1,947,586 |
| Jul 28, 2026 | Nathan Kroekerofficer: Chief Commercial Officer | Sale | 110,417 | $3.36 | 887,527 |
| Jul 28, 2026 | Sumeet Puriofficer: Chief Accounting Officer | Sale | 29,167 | $3.36 | 202,279 |
| Jul 7, 2026 | Nathan Kroekerofficer: CCO and Interim CFO | Sale | 79,309 | $4.68 | 777,110 |
| Jun 30, 2026 | Nathan Kroekerofficer: CCO and Interim CFO | Sale | 35,289 | $5.86 | 697,801 |
| Jun 30, 2026 | Michael W. Silbermanofficer: Chief Legal Officer | Sale | 14,998 | $5.87 | 298,277 |
| Jun 30, 2026 | Michelle Buczkowskiofficer: Chief Administration Officer | Sale | 11,469 | $5.87 | 59,242 |
| Jun 30, 2026 | Sumeet Puriofficer: Chief Accounting Officer | Sale | 8,823 | $5.86 | 173,112 |
| May 28, 2026 | Marian Waltersdirector | Sale | 30,000 | $9.18 | 158,445 |
| May 20, 2026 | Marian Waltersdirector | Sale | 22,319 | $7.20 | 158,445 |
CongressHouse and Senate disclosures
Not reported.