Reporting Manager
Darwin Global Management, Ltd.
Symbol
INSM
Shares outstanding
181M shares
Disclosed Ownership
15.4M shares
Ownership
8.5%
Form type
SCHEDULE 13G/A
Filing time
15 May 2025, 16:30:12 UTC
Date of event
31 Mar 2025
Previous filing
14 Feb 2025
Next filing
14 Nov 2025

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Darwin Global Management, Ltd. 8.5% 15.4M 0 15.4M /s/ John Legge John Legge, Director and Chief Financial Officer
Dr. Abhishek Trehan 8.5% 15.4M 0 15.4M /s/ Dr. Abhishek Trehan Dr. Abhishek Trehan, individually
Darwin Global Master Fund, Ltd. 7.5% 13.5M 0 13.5M /s/ John Legge By: Darwin Global Management, Ltd, its Investment Manager, By: John Legge, Director and Chief Financial Officer