Adage Capital Management, L.P. - Sep 30, 2025 SCHEDULE 13G Report for Milestone Pharmaceuticals Inc. Common Shares, no par value (MIST)

Filing Manager
Adage Capital Management, L.P.
Reporting Manager
Adage Capital Management, L.P.
Security
Milestone Pharmaceuticals Inc. Common Shares, no par value
Symbol
MIST
Shares outstanding
86.7M shares
Disclosed Ownership
8.66M shares
Ownership
9.99%
Form type
SCHEDULE 13G
Date filed
11/13/2025, 09:10 AM
Date of event
Sep 30, 2025
SEC
View on sec.gov

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Adage Capital Management, L.P. 9.99% 8.66M 0 8.66M /s/ Robert Atchinson By: Adage Capital Partners LLC, its General Partner, By: Robert Atchinson, its Managing Member
Robert Atchinson 9.99% 8.66M 0 8.66M /s/ Robert Atchinson Robert Atchinson, individually
Phillip Gross 9.99% 8.66M 0 8.66M /s/ Phillip Gross Phillip Gross, individually