BLACKROCK
Rank #1
7.09%
- Shares
- 24.08M
- Change
- +657.16K
- Change %
- +2.81%
- Filing
- Mar 31, 2026
Increased
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
NASDAQ · INDUSTRIALS · Holders
Eos Energy Enterprises Inc (EOSE) Institutional Ownership & Insider Trading History
Top EOSE institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.
Ownership read
EOSE insider sentiment: Net selling.
BLACKROCK is the largest loaded institutional holder. 72 sale rows and 0 purchase rows are visible in the loaded Form 4 history. Use the filters below to separate real buying and selling from option exercises, gifts, awards, and tax withholding.
Insider flow
EOSE
Purchases—
Sales5.04M
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
24.08M
BLACKROCK
Insider stance
Net selling
$24.99M sold / — bought
Latest filing
May 28, 2026
Most recent holder or insider filing date
Rows loaded
240
120 holder / 120 insider
- Holder rows
- 120
- Market data feed
- Latest filing
- May 28, 2026
- Most recent holder or insider filing date
- Increased / initiated
- 85
- 29 decreased in loaded rows
- Insider rows
- 120
- Market data feed
Top 120 institutional holders
Eos Energy Enterprises Inc (EOSE) institutional ownership
Ranked by reported share count, with position changes and latest filing dates where the ownership feed supplies them.
VANGUARD GROUP INC
Rank #2
5.48%
- Shares
- 18.62M
- Change
- +3.08M
- Change %
- +19.82%
- Filing
- Dec 31, 2025
Increased
DRIEHAUS CAPITAL MANAGEMENT LLC
Rank #3
4.38%
- Shares
- 14.87M
- Change
- +598.88K
- Change %
- +4.20%
- Filing
- Mar 31, 2026
Increased
VANGUARD CAPITAL MANAGEMENT LLC
Rank #4
4.37%
- Shares
- 14.84M
- Change
- +14.84M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
TWO SIGMA INVESTMENTS
Rank #5
4.14%
- Shares
- 14.07M
- Change
- +8.72M
- Change %
- +1.63%
- Filing
- Mar 31, 2026
Increased
STATE STREET CORP
Rank #6
2.36%
- Shares
- 8.02M
- Change
- +328.09K
- Change %
- +4.27%
- Filing
- Mar 31, 2026
Increased
GEODE CAPITAL MANAGEMENT
Rank #7
2.30%
- Shares
- 7.81M
- Change
- +607.39K
- Change %
- +8.43%
- Filing
- Mar 31, 2026
Increased
MARSHALL WACE
Rank #8
1.95%
- Shares
- 6.61M
- Change
- +6.43M
- Change %
- +35.29%
- Filing
- Mar 31, 2026
Increased
SUSQUEHANNA INTERNATIONAL GROUP
Rank #9
1.87%
- Shares
- 6.35M
- Change
- -227.69K
- Change %
- -3.46%
- Filing
- Mar 31, 2026
Decreased
CITADEL ADVISORS LLC
Rank #10
1.80%
- Shares
- 6.10M
- Change
- +3.64M
- Change %
- +1.48%
- Filing
- Mar 31, 2026
Increased
ELECTRON CAPITAL PARTNERS
Rank #11
1.58%
- Shares
- 5.38M
- Change
- -742.24K
- Change %
- -12.12%
- Filing
- Mar 31, 2026
Decreased
HRT FINANCIAL LP
Rank #12
1.53%
- Shares
- 5.19M
- Change
- +3.22M
- Change %
- +1.63%
- Filing
- Mar 31, 2026
Increased
CRYSTAL COVE ASSET MANAGEMENT
Rank #13
1.27%
- Shares
- 4.30M
- Change
- +4.30M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
STIFEL FINANCIAL CORP
Rank #14
1.22%
- Shares
- 4.14M
- Change
- -97.27K
- Change %
- -2.30%
- Filing
- Mar 31, 2026
Decreased
VOLORIDGE INVESTMENT MANAGEMENT
Rank #15
1.01%
- Shares
- 3.44M
- Change
- +3.22M
- Change %
- +14.51%
- Filing
- Mar 31, 2026
Increased
TWO SIGMA ADVISERS
Rank #16
0.95%
- Shares
- 3.21M
- Change
- +3.21M
- Change %
- —
- Filing
- Dec 31, 2025
Initiated
GROUP ONE TRADING LLC
Rank #17
0.89%
- Shares
- 3.01M
- Change
- +1.75M
- Change %
- +1.39%
- Filing
- Mar 31, 2026
Increased
MILLENNIUM MANAGEMENT LLC
Rank #18
0.88%
- Shares
- 2.99M
- Change
- +1.74M
- Change %
- +1.40%
- Filing
- Mar 31, 2026
Increased
MORGAN STANLEY
Rank #19
0.87%
- Shares
- 2.96M
- Change
- -308.92K
- Change %
- -9.45%
- Filing
- Mar 31, 2026
Decreased
VANGUARD PORTFOLIO MANAGEMENT LLC
Rank #20
0.84%
- Shares
- 2.84M
- Change
- +2.84M
- Change %
- —
- Filing
- Mar 31, 2026
Initiated
| # | Institution | % held | Shares | Change | Change % | Filing date |
|---|---|---|---|---|---|---|
| 1 | 7.09% | 24.08M | +657.16K Increased | +2.81% | Mar 31, 2026 | |
| 2 | 5.48% | 18.62M | +3.08M Increased | +19.82% | Dec 31, 2025 | |
| 3 | DRIEHAUS CAPITAL MANAGEMENT LLC | 4.38% | 14.87M | +598.88K Increased | +4.20% | Mar 31, 2026 |
| 4 | 4.37% | 14.84M | +14.84M Initiated | — | Mar 31, 2026 | |
| 5 | TWO SIGMA INVESTMENTS | 4.14% | 14.07M | +8.72M Increased | +1.63% | Mar 31, 2026 |
| 6 | 2.36% | 8.02M | +328.09K Increased | +4.27% | Mar 31, 2026 | |
| 7 | 2.30% | 7.81M | +607.39K Increased | +8.43% | Mar 31, 2026 | |
| 8 | MARSHALL WACE | 1.95% | 6.61M | +6.43M Increased | +35.29% | Mar 31, 2026 |
| 9 | SUSQUEHANNA INTERNATIONAL GROUP | 1.87% | 6.35M | -227.69K Decreased | -3.46% | Mar 31, 2026 |
| 10 | CITADEL ADVISORS LLC | 1.80% | 6.10M | +3.64M Increased | +1.48% | Mar 31, 2026 |
| 11 | ELECTRON CAPITAL PARTNERS | 1.58% | 5.38M | -742.24K Decreased | -12.12% | Mar 31, 2026 |
| 12 | HRT FINANCIAL LP | 1.53% | 5.19M | +3.22M Increased | +1.63% | Mar 31, 2026 |
| 13 | CRYSTAL COVE ASSET MANAGEMENT | 1.27% | 4.30M | +4.30M Initiated | — | Mar 31, 2026 |
| 14 | STIFEL FINANCIAL CORP | 1.22% | 4.14M | -97.27K Decreased | -2.30% | Mar 31, 2026 |
| 15 | VOLORIDGE INVESTMENT MANAGEMENT | 1.01% | 3.44M | +3.22M Increased | +14.51% | Mar 31, 2026 |
| 16 | TWO SIGMA ADVISERS | 0.95% | 3.21M | +3.21M Initiated | — | Dec 31, 2025 |
| 17 | GROUP ONE TRADING LLC | 0.89% | 3.01M | +1.75M Increased | +1.39% | Mar 31, 2026 |
| 18 | MILLENNIUM MANAGEMENT LLC | 0.88% | 2.99M | +1.74M Increased | +1.40% | Mar 31, 2026 |
| 19 | 0.87% | 2.96M | -308.92K Decreased | -9.45% | Mar 31, 2026 | |
| 20 | 0.84% | 2.84M | +2.84M Initiated | — | Mar 31, 2026 |
Showing 20 of 120 matching institutional rows.Load more institutions
Recent insider transactions
Eos Energy Enterprises Inc (EOSE) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
WALTERS, MARIAN
Director
- Shares
- 30.00K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed May 28, 2026
WALTERS, MARIAN
Director
- Shares
- 30.00K
- % company
- <0.01%
- Price
- $1.18
- Value
- $35,400
Filed May 28, 2026
WALTERS, MARIAN
Director
- Shares
- 30.00K
- % company
- <0.01%
- Price
- $9.18
- Value
- $275,400
Filed May 28, 2026
WALTERS, MARIAN
Director
- Shares
- 22.32K
- % company
- <0.01%
- Price
- $7.20
- Value
- $160,697
Filed May 20, 2026
WALTERS, MARIAN
Director
- Shares
- 22.32K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed May 20, 2026
WALTERS, MARIAN
Director
- Shares
- 22.32K
- % company
- <0.01%
- Price
- $1.18
- Value
- $26,336
Filed May 20, 2026
WALTERS, MARIAN
Director
- Shares
- 7.68K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed May 19, 2026
URBAN, DAVID
Director
- Shares
- 23.11K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed May 19, 2026
DIMITRIEF, ALEXANDER
Director
- Shares
- 10.79K
- % company
- <0.01%
- Price
- $6.88
- Value
- $74,201
Filed May 19, 2026
DIMITRIEF, ALEXANDER
Director
- Shares
- 26.96K
- % company
- <0.01%
- Price
- No cash value
- Value
- No cash value
Filed May 19, 2026
DEMBY, CLAUDE
Director
- Shares
- 23.11K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed May 19, 2026
DEMBY, CLAUDE
Director
- Shares
- 9.24K
- % company
- <0.01%
- Price
- $6.88
- Value
- $63,599
Filed May 19, 2026
| # | Insider | % company | Action | Shares | Price | Value | Filing date |
|---|---|---|---|---|---|---|---|
| 1 | WALTERS, MARIAN Director | <0.01% | Sale to issuer | 30.00K | Not reported | Not reported | May 28, 2026 |
| 2 | WALTERS, MARIAN Director | <0.01% | Award / grant | 30.00K | $1.18 | $35,400 | May 28, 2026 |
| 3 | WALTERS, MARIAN Director | <0.01% | Sale to issuer | 30.00K | $9.18 | $275,400 | May 28, 2026 |
| 4 | WALTERS, MARIAN Director | <0.01% | Sale to issuer | 22.32K | $7.20 | $160,697 | May 20, 2026 |
| 5 | WALTERS, MARIAN Director | <0.01% | Sale to issuer | 22.32K | Not reported | Not reported | May 20, 2026 |
| 6 | WALTERS, MARIAN Director | <0.01% | Award / grant | 22.32K | $1.18 | $26,336 | May 20, 2026 |
| 7 | WALTERS, MARIAN Director | <0.01% | Sale to issuer | 7.68K | Not reported | Not reported | May 19, 2026 |
| 8 | URBAN, DAVID Director | <0.01% | Sale to issuer | 23.11K | Not reported | Not reported | May 19, 2026 |
| 9 | DIMITRIEF, ALEXANDER Director | <0.01% | Sale to issuer | 10.79K | $6.88 | $74,201 | May 19, 2026 |
| 10 | DIMITRIEF, ALEXANDER Director | <0.01% | Award / grant | 26.96K | No cash value | No cash value | May 19, 2026 |
| 11 | DEMBY, CLAUDE Director | <0.01% | Sale to issuer | 23.11K | Not reported | Not reported | May 19, 2026 |
| 12 | DEMBY, CLAUDE Director | <0.01% | Sale to issuer | 9.24K | $6.88 | $63,599 | May 19, 2026 |
Showing 12 of 120 matching Form 4 rows. Percent of company uses current shares outstanding when available.Load more insiders
Frequently asked
Common questions.
Who are the largest EOSE shareholders?
BLACKROCK is the largest institutional holder in the loaded EOSE ownership feed, with 24.08 million shares, or about 7.09% of shares outstanding. The table ranks additional institutions by reported share count.
What is institutional ownership of EOSE?
The current TECHi snapshot has 120 loaded institutional rows for Eos Energy Enterprises Inc. 85 rows are marked increased or initiated, while 29 rows are marked decreased, with the latest holder filing dated Mar 31, 2026.
Where can I see Eos Energy Enterprises Inc insider transactions?
The insider transaction table currently shows 120 loaded Form 4 rows for EOSE, with the latest insider filing dated May 28, 2026. It separates purchases, sales, option exercises, awards, gifts, and tax withholding so administrative transactions are not confused with open-market trades.
Are EOSE insiders buying or selling?
The loaded EOSE Form 4 rows currently read Net selling: 72 sale rows and 0 purchase rows. Awards, gifts, conversions, and tax withholding are shown separately because they do not carry the same signal as open-market buying or selling.
Who is the most active EOSE insider in the loaded filings?
MASTRANGELO, JOE is the most active insider by absolute share movement in the loaded EOSE rows, with 2.22 million shares moving across the visible filing history. Review the action labels before treating that activity as buying or selling.