Eos Energy Enterprises, Inc. (EOSE) Insider Trading
Over the last 3 months, EOSE insiders made 1 open-market buy and 3 sales, a net sale of -$390K (SEC Form 4). Over the last 6 months, 283 institutions increased and 167 reduced their position (13F).
Insider Activity
Sentiment
17/100
Buys (3m)
1
Sells (3m)
3
Net (3m)
-$390.3K
Insiders buying
Insider trades by month Buys Sells
Aug
Sep
Dec
Jan
Mar
May
Context3-month price +20.2%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| May 29, 2026 | Walters Mariandirector | Sell | 30,000 | $9.18 |
| May 29, 2026 | Walters Mariandirector | Option | 30,000 | $1.18 |
| May 22, 2026 | Walters Mariandirector | Option | 22,319 | $1.18 |
| May 22, 2026 | Walters Mariandirector | Sell | 22,319 | $7.20 |
| May 19, 2026 | Walters Mariandirector | Option | 7,681 | $1.18 |
| May 19, 2026 | Nixon Gregory S.director | Grant | 23,111 | — |
| May 19, 2026 | DIMITRIEF ALEXANDERdirector | Option | 26,963 | — |
| May 19, 2026 | Demby Claudedirector | Option | 23,111 | — |
| May 19, 2026 | Bornstein Jeffrey Sdirector | Option | 30,815 | — |
| May 19, 2026 | McNeil Jeffdirector | Option | 23,111 | — |
| May 19, 2026 | Nixon Gregory S.director | Option | 23,111 | — |
| May 19, 2026 | Urban Daviddirector | Option | 23,111 | — |
| May 19, 2026 | Walters Mariandirector | Option | 23,111 | — |
| May 19, 2026 | Walters Mariandirector | Sell | 7,681 | $7.07 |
| Mar 10, 2026 | Urban Daviddirector | Buy | 16,250 | $6.16 |
| Mar 5, 2026 | Mastrangelo Joedirector, officer: Chief Executive Officer | Buy | 23,900 | $6.58 |
| Mar 4, 2026 | DIMITRIEF ALEXANDERdirector | Buy | 15,000 | $6.04 |
| Jan 26, 2026 | Kroeker Nathanofficer: CCO and Interim CFO | Option | 100,000 | — |
| Jan 26, 2026 | Kroeker Nathanofficer: CCO and Interim CFO | Sell | 50,000 | $16.04 |
| Jan 23, 2026 | Silberman Michael Wofficer: Chief Legal Officer | Sell | 41,667 | $17.74 |
| Jan 23, 2026 | Silberman Michael Wofficer: Chief Legal Officer | Option | 83,334 | — |
| Dec 23, 2025 | Walters Mariandirector | Grant | 1,782 | — |
| Dec 23, 2025 | Nigro Josephdirector | Grant | 3,565 | — |
| Dec 8, 2025 | Stidolph Russell Monokidirector | Sell | 768 | $14.80 |
| Dec 8, 2025 | Stidolph Russell Monokidirector | Sell | 500,000 | $14.99 |
| Dec 8, 2025 | Stidolph Russell Monokidirector | Sell | 29,999 | $15.36 |
| Dec 8, 2025 | Stidolph Russell Monokidirector | Option | 120,633 | $2.32 |
| Dec 8, 2025 | Stidolph Russell Monokidirector | Tax | 18,793 | $14.89 |
| Dec 8, 2025 | Stidolph Russell Monokidirector | Tax | 11,491 | $14.89 |
| Dec 8, 2025 | Stidolph Russell Monokidirector | Option | 145,018 | $1.18 |
Source: EOSE SEC Form 4 filings, latest May 29, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their EOSE positions over the last 6 months (SEC Form 13F).
Increased
283
New positions
162
Reduced
167
Sold out
114
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BLACKROCK, INC. | Increased | 24.1M | May 13, 2026 |
| BLACKROCK, INC. | Increased | 23.4M | Feb 12, 2026 |
| VANGUARD GROUP INC | Increased | 18.6M | Jan 29, 2026 |
| DRIEHAUS CAPITAL MANAGEMENT LLC | Increased | 14.9M | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 14.8M | May 15, 2026 |
| DRIEHAUS CAPITAL MANAGEMENT LLC | Increased | 14.3M | Feb 17, 2026 |
| TWO SIGMA INVESTMENTS, LP | Increased | 14.1M | May 15, 2026 |
| CITADEL ADVISORS LLC | Increased | 9.4M | Feb 17, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 9.3M | Feb 17, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 8.6M | May 15, 2026 |
| CITADEL ADVISORS LLC | Reduced | 8.4M | May 15, 2026 |
| STATE STREET CORP | Increased | 8.0M | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 7.8M | May 15, 2026 |
| STATE STREET CORP | Increased | 7.7M | Feb 13, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 7.2M | Feb 9, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.