OrbiMed Capital GP VIII LLC bought $9.9M of Sionna Therapeutics (SION)

Executed Feb 10 2025, disclosed Feb 10 2025, the same day.

Value, as filed

$9.9M

550,000 sh × $18.00

Executed

Feb 10 2025

the trade date, as filed

Disclosed

Feb 10 2025

0 days after the trade

Return, 21 sessionsiFrom the disclosed entry session; derived

-31.5%

-31.5% from execution

Over the 21 trading sessions from the disclosed entry session (Feb 10 2025), the stock returned -31.5% (delay-adjusted); from the execution session (Feb 10 2025), -31.5%. Derived: entry at the session's open, exit at the close 20 sessions later.

The filer

OL OrbiMed Capital GP VIII LLC Director profile →

OrbiMed Capital GP VIII LLC (Director) filed 2 Form 4 reports as a reporting entity in the trailing twelve months (0 purchases, 2 sales), most often in Sionna Therapeutics, Inc. (SION). The largest single filing was $1.5M of SION (33,356 sh × $44.55, as filed), executed Dec 24 2025.

The name

SION

Sionna Therapeutics, Inc. SION · Healthcare · 45 filings in 24 months ticker →

Healthcare · Sionna Therapeutics, Inc., a clinical-stage biopharmaceutical company, researches and develops medicines for the treatment of cystic fibros…

More Healthcare filings→ Insider filings, newest first→ View the original filing at www.sec.gov→

Other filings by OrbiMed Capital GP VIII LLC in SION

SIONSALE Sionna Therapeutics, Inc. $1.3M
29,063 sh × $44.58
Exec Feb 3
Filed Feb 4 · 5:30 PM ET SIONSALE Sionna Therapeutics, Inc. $1.5M
33,356 sh × $44.55
Exec Dec 24 2025
Filed Dec 29 2025 · 5:30 PM ET