EOSE · Insider trading · 13F holders · Congress trades
Eos Energy Enterprises, Inc. (EOSE)
Who is buying and selling EOSE: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 12
- Insider buys, 90 days
- $59K
- Insider sales, 90 days
- $1.4M
- Congress trades, 12 months
- 0
EOSE at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 4 EOSE insiders filed 1 open-market purchase worth $59K and 4 sales worth $1.4M on SEC Form 4; 4 of the sales were pre-planned under Rule 10b5-1.
- 12 13F filers hold EOSE among their 50 largest positions, worth $203.4M combined, including Ran Zhou and Sander Gerber. The biggest bets by portfolio weight are Crystal Cove Asset Management, LLC (27.5%), Ran Zhou (1.6%) and Ursa Fund Management, LLC (1.2%). In their latest 13Fs, 2 managers opened a new position and 1 added to one.
- No member of Congress has disclosed a trade in EOSE.
- EOSE last closed at $1.98 on Oct 29, 2026.
EOSE insider trading
Between Aug 1, 2026 and Oct 29, 2026, 4 EOSE insiders filed 1 open-market purchase worth $59K and 4 sales worth $1.4M on SEC Form 4; 4 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Oct 29, 2026 | Buczkowski Michelle | Chief Commercial Officer | Sale10b5-1 | 50,000 | $2.00 | $100K | SEC |
| Sep 16, 2026 | Mastrangelo Joe | Chief Executive Officer, Director | Sale10b5-1 | 250,000 | $3.92 | $980K | SEC |
| Sep 16, 2026 | Puri Sumeet | Chief Accounting Officer | Sale10b5-1 | 43,750 | $3.92 | $172K | SEC |
| Sep 15, 2026 | Song Haiyan | Director | Buy | 15,000 | $3.91 | $59K | SEC |
| Sep 9, 2026 | Puri Sumeet | Chief Accounting Officer | Sale10b5-1 | 34,167 | $4.13 | $141K | SEC |
Who owns EOSE? Hedge funds and superinvestors
12 13F filers hold EOSE among their 50 largest positions, worth $203.4M combined, including Ran Zhou and Sander Gerber. The biggest bets by portfolio weight are Crystal Cove Asset Management, LLC (27.5%), Ran Zhou (1.6%) and Ursa Fund Management, LLC (1.2%). In their latest 13Fs, 2 managers opened a new position and 1 added to one.
Superinvestors holding EOSE: Ran Zhou 1.6% · Sander Gerber 0.4%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Sander GerberHedge fund | 0.4% | $80.5M | 13,683,634 | — | Q2 2026 |
| Ran ZhouHedge fund | 1.6% | $39.3M | 6,681,859 | +24.2% shares | Q2 2026 |
| Crystal Cove Asset Management, LLCWealth manager | 27.5% | $25.2M | 4,285,181 | -0.3% shares | Q2 2026 |
| Graham Capital Management, L.P.Hedge fund | 0.8% | $21.0M | 3,566,446 | — | Q2 2026 |
| Cable Car Capital, LPHedge fund | 0.3% | $11.8M | 2,000,000 | — | Q2 2026 |
| Ursa Fund Management, LLCHedge fund | 1.2% | $7.3M | 1,235,459 | New | Q2 2026 |
| Masters Capital Management LLCHedge fund | 1.0% | $7.1M | 1,200,000 | New | Q2 2026 |
| Quarry LPHedge fund | 1.1% | $6.9M | 1,166,288 | — | Q2 2026 |
| Alpine Global Management, LLCInvestment manager | 0.5% | $2.9M | 500,000 | — | Q2 2026 |
| Arosa Capital Management LPHedge fund | 1.0% | $1.2M | 200,000 | -72.5% shares | Q2 2026 |
| Skaana Management L.P.Hedge fund | 0.1% | $274K | 46,546 | -4.5% shares | Q2 2026 |
| Adams Natural Resources Fund, Inc.Asset manager | 0.0% | $192K | 62,600 | +0.0% shares | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 11). Screen EOSE in the grand portfolio →
EOSE stock trades by members of Congress
No member of Congress has disclosed a trade in EOSE.
EOSE questions and answers
Are insiders buying EOSE stock?
Between Aug 1, 2026 and Oct 29, 2026, 4 EOSE insiders filed 1 open-market purchase worth $59K and 4 sales worth $1.4M on SEC Form 4; 4 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own EOSE?
12 13F filers hold EOSE among their 50 largest positions, worth $203.4M combined, including Ran Zhou and Sander Gerber. The biggest bets by portfolio weight are Crystal Cove Asset Management, LLC (27.5%), Ran Zhou (1.6%) and Ursa Fund Management, LLC (1.2%). In their latest 13Fs, 2 managers opened a new position and 1 added to one.
Has Congress traded EOSE?
No member of Congress has disclosed a trade in EOSE.
Who is the largest holder of EOSE?
Among 13F filers, Sander Gerber reports the largest EOSE position, $80.5M (13,683,634 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Crystal Cove Asset Management, LLC's: 27.5% of its portfolio.
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