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sellWeak cluster of 310b5-1 plan

Jonathan Yen-Wen Yu sold $66k of IRON

Chief Operating Officer at Disc Medicine, Inc.. 804 shares at an average of $82.64, traded Aug 12, 2026, filed Aug 14, 2026.

Warning score
8
Value
$66k
804 shares
Holdings after
54,324
-1% from before
From 52-week low
+44%
low $55.95, close $80.59
From 52-week high
-14%
high $94.11, as of Aug 12, 2026

Score components

  • Role
    COO
    +20
  • Trade size
    $66k at market
    +8
  • Share of holdings sold
    Sold 1.5% of holdings
    0
  • Cluster
    3 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.

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.

IRONOct 12, 2026 · close 60.48
Since filing Aug 14, 2026: -23.3%SPY +0.5% · excess -23.8%

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 0001193125-26-352823, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Aug 12, 2026MOption exercise
Common Stock10b5-1
+804$13.50$11k55,128Aug 14, 2026
Aug 12, 2026SOpen-market sale
Common Stock10b5-1
-804$82.64$66k54,324Aug 14, 2026
Aug 12, 2026MOption exercise
Stock Option (Right to Buy)derivative10b5-1
-804$0.00$022,943Aug 14, 2026

Related signals

Other insiders at Disc Medicine, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
45Moderate
IRONsell
Disc Medicine, Inc.
Kevin Bitterman
director
$1.9M
27,136 shares
-100%
14Weak
IRONsell 210b5-1
Disc Medicine, Inc.
Kevin Bitterman
director
$135k
1,689 shares
-1%
33Weak
IRONsell 210b5-1
Disc Medicine, Inc.
Kevin Bitterman
director
$4.4M
54,496 shares
-16%
27Weak
IRONsell 310b5-1
Disc Medicine, Inc.
Jonathan Yen-Wen Yu
Chief Operating Officer
$756k
9,096 shares
-17%
35Weak
IRONsell 310b5-1
Disc Medicine, Inc.
John D Quisel
Chief Executive Officer
$2.6M
33,000 shares
-13%
11Weak
IRONsell 310b5-1
Disc Medicine, Inc.
Rahul Khara
Chief Legal Officer
$400k
5,000 shares
-9%
28Weak
IRONsell 210b5-1
Disc Medicine, Inc.
John D Quisel
Chief Executive Officer
$2.5M
33,000 shares
-13%
0Weak
IRONsell 310b5-1
Disc Medicine, Inc.
Jonathan Yen-Wen Yu
Chief Operating Officer
$8,250
100 shares
-0%
0Weak
IRONsell 310b5-1
Disc Medicine, Inc.
Jonathan Yen-Wen Yu
Chief Operating Officer
$22k
300 shares
-1%
7Weak
IRONsell 310b5-1
Disc Medicine, Inc.
Rahul Khara
Chief Legal Officer
$188k
2,500 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.

Jonathan Yen-Wen Yu sold $66k of IRON | InsiderTell