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sellWeak cluster of 510b5-1 plan

Joe Mastrangelo sold $990k of EOSE

Chief Executive Officer at Eos Energy Enterprises, Inc.. 166,667 shares at an average of $5.94, traded Jul 29, 2025, filed Jul 29, 2025.

Warning score
35
Value
$990k
166,667 shares
Holdings after
1,403,226
-11% from before
From 52-week low
+177%
low $2.15, close $5.95
From 52-week high
-16%
high $7.11, as of Jul 29, 2025

Score components

  • Role
    CEO
    +25
  • Trade size
    $990k at market
    +25
  • Share of holdings sold
    Sold 11% of holdings
    +5
  • Cluster
    5 insiders selling within 14 days
    +15
  • Exercise and sell
    Shares came from an option exercise in the same filing
    -15
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m +19.7%, 3m +152.1%, 6m +152.1%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

EOSEOct 12, 2026 · close 2.39
Since filing Jul 29, 2025: -59.9%SPY +24.1% · excess -84.0%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0001805077-25-000149, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jul 25, 2025MOption exercise
Common Stock10b5-1
+333,333$0.00$01,569,893Jul 29, 2025
Jul 29, 2025SOpen-market sale
Common Stock10b5-1
-166,667$5.94$990k1,403,226Jul 29, 2025
Jul 25, 2025MOption exercise
Restricted Stock Unitsderivative10b5-1
-333,333$0.00$0666,667Jul 29, 2025

Related signals

Other insiders at Eos Energy Enterprises, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
23Weak
EOSEsell 210b5-1
Eos Energy Enterprises, Inc.
Joe Mastrangelo
Chief Executive Officer
$980k
250,000 shares
-10%
4Weak
EOSEsell 210b5-1
Eos Energy Enterprises, Inc.
Sumeet Puri
Chief Accounting Officer
$172k
43,750 shares
-14%
30Weak
EOSEbuy
Eos Energy Enterprises, Inc.
Haiyan Song
director
$59k
15,000 shares
-
4Weak
EOSEsell 210b5-1
Eos Energy Enterprises, Inc.
Sumeet Puri
Chief Accounting Officer
$141k
34,167 shares
-13%
44Moderate
EOSEsell 3
Eos Energy Enterprises, Inc.
Joe Mastrangelo
Chief Executive Officer
$575k
159,154 shares
-8%
15Weak
EOSEsell 310b5-1
Eos Energy Enterprises, Inc.
Nathan Kroeker
Chief Commercial Officer
$371k
110,417 shares
-11%
10Weak
EOSEsell 310b5-1
Eos Energy Enterprises, Inc.
Sumeet Puri
Chief Accounting Officer
$98k
29,167 shares
-13%
17Weak
EOSEsell 410b5-1
Eos Energy Enterprises, Inc.
Nathan Kroeker
CCO and Interim CFO
$371k
79,309 shares
-9%
8Weak
EOSEsell 410b5-1
Eos Energy Enterprises, Inc.
Michelle Buczkowski
Chief Administration Officer
$67k
11,469 shares
-16%
14Weak
EOSEsell 410b5-1
Eos Energy Enterprises, Inc.
Nathan Kroeker
CCO and Interim CFO
$207k
35,289 shares
-5%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Joe Mastrangelo sold $990k of EOSE | InsiderTell