Orbimed Advisors Llc - Feb 10, 2025 SCHEDULE 13D Report for Sionna Therapeutics, Inc. Common Stock (SION)

Filing Manager
ORBIMED ADVISORS LLC
Reporting Manager
ORBIMED ADVISORS LLC
Security
Sionna Therapeutics, Inc. Common Stock
Symbol
SION
Shares outstanding
44.1M shares
Disclosed Ownership
3.7M shares
Ownership
8.4%
Form type
SCHEDULE 13D
Date filed
2/13/2025, 04:47 PM
Date of event
Feb 10, 2025
SEC
View on sec.gov

Reporting Managers (2)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
ORBIMED ADVISORS LLC 8.4% 3.7M 0 3.7M /s/ Carl L. Gordon Carl L. Gordon/Member 0001055951
OrbiMed Capital GP VIII LLC 8.4% 3.7M 0 3.7M /s/ Carl L. Gordon Carl L. Gordon/Member of OrbiMed Advisors LLC 0001845804