Skip to content
sellWeak cluster of 210b5-1 plan

Orbimed Advisors LLC sold $4,493 of SION

director at Sionna Therapeutics, Inc.. 101 shares at an average of $44.49, traded May 27, 2026, filed May 29, 2026.

Warning score
3
Value
$4,493
101 shares
Holdings after
2,671,721
-0% from before
From 52-week low
+241%
low $12.73, close $43.43
From 52-week high
-5%
high $45.95, as of May 27, 2026

Score components

  • Role
    Director
    +15
  • Trade size
    $4k at market
    0
  • Share of holdings sold
    Sold 0.0% of holdings
    0
  • Cluster
    2 insiders selling within 14 days
    +8
  • 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.

SIONOct 12, 2026 · close 4.69
Since filing May 29, 2026: -89.0%SPY +3.4% · excess -92.4%

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 0000947871-26-000587, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
May 27, 2026SOpen-market sale
Common Stockindirect: See footnotes10b5-1
-101$44.49$4,4932,671,721May 29, 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%
35Weak
SIONsell 310b5-1
Sionna Therapeutics, Inc.
Orbimed Advisors LLC
director
$3.9M
85,918 shares
-3%
35Weak
SIONsell 310b5-1
Sionna Therapeutics, Inc.
Peter A. Thompson
director
$3.9M
85,918 shares
-3%
32Weak
SIONsell 310b5-1
Sionna Therapeutics, Inc.
Jennifer Fitzpatrick
Chief Legal Officer
$447k
10,250 shares
-100%
35Weak
SIONsell 310b5-1
Sionna Therapeutics, Inc.
Orbimed Advisors LLC
director
$5.3M
115,844 shares
-4%
35Weak
SIONsell 310b5-1
Sionna Therapeutics, Inc.
Peter A. Thompson
director
$5.3M
115,844 shares
-4%
3Weak
SIONsell 210b5-1
Sionna Therapeutics, Inc.
Peter A. Thompson
director
$4,493
101 shares
-0%
28Weak
SIONsell 210b5-1
Sionna Therapeutics, Inc.
Orbimed Advisors LLC
director
$13M
292,952 shares
-10%
28Weak
SIONsell 210b5-1
Sionna Therapeutics, Inc.
Peter A. Thompson
director
$13M
292,952 shares
-10%
28Weak
SIONsell 210b5-1
Sionna Therapeutics, Inc.
Orbimed Advisors LLC
director
$2.5M
55,345 shares
-2%

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.

Orbimed Advisors LLC sold $4,493 of SION | InsiderTell