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sellModerate cluster of 2

Tpg Gp A, LLC sold $10M of SION

owner at Sionna Therapeutics, Inc.. 250,000 shares at an average of $40.00, traded Jan 22, 2026, filed Jan 26, 2026.

Warning score
45
Value
$10M
250,000 shares
Holdings after
6,494,962
-4% from before
From 52-week low
+445%
low $7.66, close $41.77
From 52-week high
-6%
high $44.38, as of Jan 22, 2026

Score components

  • Role
    10% owner
    +12
  • Trade size
    $10.0M at market
    +25
  • Share of holdings sold
    Sold 3.7% of holdings
    0
  • Cluster
    2 insiders selling within 14 days
    +8

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.

SIONOct 9, 2026 · close 4.90
Since filing Jan 26, 2026: -88.5%SPY +13.3% · excess -101.8%

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 0001999371-26-001696, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jan 22, 2026SOpen-market sale
Common Stockindirect: See Explanation of Responses
-250,000$40.00$10M6,494,962Jan 26, 2026

Related signals

Other insiders at Sionna Therapeutics, Inc. and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
50Moderate
SIONsell
Sionna Therapeutics, Inc.
Ra Capital Management, L.p.
director, owner
$22M
3,448,811 shares
-50%
15Weak
SIONsell10b5-1
Sionna Therapeutics, Inc.
Jennifer Fitzpatrick
Chief Legal Officer
$347k
10,250 shares
-100%
28Weak
SIONsell 210b5-1
Sionna Therapeutics, Inc.
Orbimed Advisors LLC
director
$1.4M
30,953 shares
-1%
28Weak
SIONsell 210b5-1
Sionna Therapeutics, Inc.
Orbimed Advisors LLC
director
$1.5M
33,356 shares
-1%
28Weak
SIONsell 210b5-1
Sionna Therapeutics, Inc.
Peter A. Thompson
director
$1.5M
33,356 shares
-1%
19Weak
SIONsell 310b5-1
Sionna Therapeutics, Inc.
Orbimed Advisors LLC
director
$83k
1,875 shares
-0%
19Weak
SIONsell 310b5-1
Sionna Therapeutics, Inc.
Peter A. Thompson
director
$83k
1,875 shares
-0%
31Weak
SIONsell 310b5-1
Sionna Therapeutics, Inc.
Jennifer Fitzpatrick
Chief Legal Officer
$415k
10,250 shares
-100%
35Weak
SIONsell 410b5-1
Sionna Therapeutics, Inc.
Orbimed Advisors LLC
director
$4.8M
108,073 shares
-3%
35Weak
SIONsell 410b5-1
Sionna Therapeutics, Inc.
Peter A. Thompson
director
$4.8M
108,073 shares
-3%

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.

Tpg Gp A, LLC sold $10M of SION | InsiderTell