🕵️ EOS Energy Enterprises, Inc. ($EOSE)
SEC insider & ownership activity, last 12 months · CIK 1805077 · every row links its SEC filing
Over the last 12 months insiders sold $18.0M against $752K of open-market buying. Russ Stidolph sold $11.5M (Dec). Cerberus Capital Management II, L.P. added 31.1% → 32.6%; CCM Denali Equity Holdings, LP added 31.1% → 32.6%. No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
4 buyers, $752K (6 lots) · 8 sellers, $18.0M (23 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Russ Stidolph | 0 | – | 4 | $11.5M | Dec 8, 2025 |
| Mastrangelo Joe | 2 | $502K | 2 | $1.6M | Sep 16, 2026 |
| Kroeker Nathan | 0 | – | 4 | $1.8M | Jul 28, 2026 |
| Walters Marian | 0 | – | 4 | $1.3M | May 28, 2026 |
| Michael W. Silberman | 0 | – | 2 | $827K | Jun 30, 2026 |
| Jeffrey S. Bornstein | 0 | – | 2 | $613K | Dec 5, 2025 |
| Puri Sumeet | 0 | – | 4 | $462K | Sep 16, 2026 |
| Urban David | 1 | $100K | 0 | – | Mar 9, 2026 |
| Dimitrief Alexander | 1 | $91K | 0 | – | Mar 2, 2026 |
| Buczkowski Michelle | 0 | – | 1 | $67K | Jun 30, 2026 |
| Song Haiyan | 2 | $59K | 0 | – | Sep 14, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Cerberus Capital Management II, L.P. | 32.6% | 13D | Aug 4, 2026 | filing ↗ | |
| CCM Denali Equity Holdings, LP | 32.6% | 13D | Aug 4, 2026 | filing ↗ | |
| CCM Denali Equity Holdings GP, LLC | 32.6% | 13D | Aug 4, 2026 | filing ↗ | |
| BlackRock, Inc. | 7.6% | Class A | 13G | Jul 28, 2026 | filing ↗ |
| CCM Frontier JV Holdco, LLC | 5.2% | 13D | Aug 4, 2026 | filing ↗ | |
| CCM Frontier Power USA Holdings, LP | 5.2% | 13D | Aug 4, 2026 | filing ↗ | |
| CCM Frontier Power USA Holdings GP, LLC | 5.2% | 13D | Aug 4, 2026 | filing ↗ | |
| Cerberus GP Manager LLC | 5.2% | 13D | Aug 4, 2026 | filing ↗ | |
| Vanguard Capital Management | 5.1% | 13G | Apr 29, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Michael W. Silberman | $454K | Sep 16, 2026 | filing ↗ |
| Kroeker Nathan | $687K | Sep 16, 2026 | filing ↗ |
| Mastrangelo Joe | $1.0M | Sep 16, 2026 | filing ↗ |
| Puri Sumeet | $182K | Sep 16, 2026 | filing ↗ |
| Puri Sumeet | $143K | Sep 9, 2026 | filing ↗ |
| Puri Sumeet | $100K | Jul 28, 2026 | filing ↗ |
| Michael W. Silberman | $250K | Jul 28, 2026 | filing ↗ |
| Kroeker Nathan | $379K | Jul 28, 2026 | filing ↗ |
| Kroeker Nathan | $412K | Jul 7, 2026 | filing ↗ |
| Puri Sumeet | $53K | Jun 30, 2026 | filing ↗ |
| Michael W. Silberman | $90K | Jun 30, 2026 | filing ↗ |
| Kroeker Nathan | $211K | Jun 30, 2026 | filing ↗ |
| Buczkowski Michelle | $69K | Jun 30, 2026 | filing ↗ |
| Marian Walters | $275K | May 28, 2026 | filing ↗ |
| Marian Walters | $212K | May 19, 2026 | filing ↗ |
| Kroeker Nathan | $849K | Jan 26, 2026 | filing ↗ |
| Michael W. Silberman | $761K | Jan 23, 2026 | filing ↗ |
| Stidolph Russell Monoki | $450K | Dec 8, 2025 | filing ↗ |
| Russ Stidolph | $4.4M | Dec 8, 2025 | filing ↗ |
| Jeffrey S. Bornstein | $120K | Dec 5, 2025 | filing ↗ |
| Stidolph Russell Monoki | $7.5M | Dec 5, 2025 | filing ↗ |
| Alex Dimitrief | $266K | Dec 5, 2025 | filing ↗ |
| Jeff Bornstein | $486K | Dec 5, 2025 | filing ↗ |
| Marian Walters | $1.1M | Dec 4, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Sep 10, 2026 | filing ↗ |
| New financial obligation (2.03) | Sep 10, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Sep 10, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 10, 2026 | filing ↗ |
| Officer/director changes (5.02) | Aug 24, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Aug 24, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 24, 2026 | filing ↗ |
| Earnings (2.02) | Aug 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 5, 2026 | filing ↗ |
| Material agreement (1.01) | Aug 3, 2026 | filing ↗ |
| Unregistered equity sale (3.02) | Aug 3, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 3, 2026 | filing ↗ |
| Other events (8.01) | Jul 21, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 21, 2026 | filing ↗ |
| Earnings (2.02) | Jul 15, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jul 15, 2026 | filing ↗ |
| Other events (8.01) | Jul 15, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 15, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jul 8, 2026 | filing ↗ |
| Other events (8.01) | Jul 8, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 8, 2026 | filing ↗ |
| Other events (8.01) | Jul 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 2, 2026 | filing ↗ |
| Other events (8.01) | Jun 30, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 30, 2026 | filing ↗ |
| Material agreement (1.01) | Jun 30, 2026 | filing ↗ |
| Other events (8.01) | Jun 30, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 3, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jun 3, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 3, 2026 | filing ↗ |