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SION

Sionna Therapeutics, Inc.

NASDAQ · Healthcare · Biotechnology · US

$7.18
+6.37%
Ask drillr
0
Insider buys (3m)
5
Insider sells (3m)
-$18.7M
Net value (3m)
-80.1%
Price return (3m)
Form 4 filings
DateInsiderActivitySharesPrice
Jul 9, 2026Thompson Peter A. · directorSale85,918$45
Jul 9, 2026ORBIMED ADVISORS LLC · directorSale85,918$45
Jul 7, 2026Fitzpatrick Jennifer · officer: Chief Legal OfficerSale10,250$44
Jul 7, 2026Fitzpatrick Jennifer · officer: Chief Legal OfficerM-Exempt10,250$6.11
Jul 2, 2026Thompson Peter A. · directorSale115,844$46
Jul 2, 2026ORBIMED ADVISORS LLC · directorSale115,844$46
Jun 18, 2026Stelzer Laurie · directorA-Award17,340$37
Jun 18, 2026Thompson Peter A. · directorA-Award17,340$37
Jun 18, 2026Viney Joanne L. · directorA-Award17,340$37
Jun 18, 2026RA CAPITAL MANAGEMENT, L.P. · director, 10 percent owner: A-Award17,340$37
Jun 18, 2026Booth Bruce · directorA-Award17,340$37
Jun 18, 2026Clancy Paul J · directorA-Award17,340$37
Jun 18, 2026Resnick Joshua · directorA-Award17,340$37
Jun 18, 2026Fleming Harold Edward · directorA-Award17,340$37
Jun 18, 2026Ruddy Marcella K. · directorA-Award17,340$37
May 29, 2026ORBIMED ADVISORS LLC · directorSale101$44
May 29, 2026Thompson Peter A. · directorSale101$44
May 11, 2026Thompson Peter A. · directorSale48,546$45
May 11, 2026ORBIMED ADVISORS LLC · directorSale184,639$46
May 11, 2026ORBIMED ADVISORS LLC · directorSale59,767$45
May 11, 2026ORBIMED ADVISORS LLC · directorSale48,546$45
May 11, 2026Thompson Peter A. · directorSale184,639$46
May 11, 2026Thompson Peter A. · directorSale59,767$45
Apr 21, 2026ORBIMED ADVISORS LLC · directorSale2,948$45
Apr 21, 2026Thompson Peter A. · directorSale52,397$45
Apr 21, 2026Thompson Peter A. · directorSale2,948$45
Apr 21, 2026ORBIMED ADVISORS LLC · directorSale52,397$45
Apr 16, 2026ORBIMED ADVISORS LLC · directorSale47,814$45
Apr 16, 2026ORBIMED ADVISORS LLC · directorSale235,863$45
Apr 16, 2026Thompson Peter A. · directorSale47,814$45
Institutional positioning

13F filings over the trailing two quarters

New 33Increased 41Reduced 31Sold out 120
FilerActionSharesFiled
RA CAPITAL MANAGEMENT, L.P.Unchanged9,905,045May 15, 2026
TPG GP A, LLCReduced6,494,962May 15, 2026
ORBIMED ADVISORS LLCReduced3,530,702May 15, 2026
VIKING GLOBAL INVESTORS LPUnchanged3,195,181May 15, 2026
ATLAS VENTURE LIFE SCIENCE ADVISORS, LLCUnchanged2,995,602May 14, 2026
ENAVATE SCIENCES GP, LLCUnchanged2,478,030May 15, 2026
JPMORGAN CHASE & COIncreased1,465,014May 13, 2026
JENNISON ASSOCIATES LLCIncreased1,451,220May 6, 2026
BLACKROCK, INC.Increased1,295,867May 13, 2026
CITADEL ADVISORS LLCIncreased1,166,931May 15, 2026
CITADEL ADVISORS LLCReduced1,156,036Sep 2, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position1,029,497May 15, 2026
DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)Unchanged970,590May 15, 2026
PRICE T ROWE ASSOCIATES INC /MD/Reduced756,376May 15, 2026
STATE STREET CORPIncreased756,227May 15, 2026

Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Jul 9, 2026