Perceptive Advisors Llc - Sep 30, 2025 SCHEDULE 13G/A Report for Amylyx Pharmaceuticals, Inc. Common Stock, $0.0001 par value per share (AMLX)

Filing Manager
PERCEPTIVE ADVISORS LLC
Reporting Manager
Perceptive Advisors LLC
Security
Amylyx Pharmaceuticals, Inc. Common Stock, $0.0001 par value per share
Symbol
AMLX
Shares outstanding
109M shares
Disclosed Ownership
8.95M shares
Ownership
8.2%
Form type
SCHEDULE 13G/A
Date filed
11/14/2025, 04:00 PM
Date of event
Sep 30, 2025
Previous filing
May 15, 2025
SEC
View on sec.gov

Reporting Managers (3)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Perceptive Advisors LLC 8.2% 8.95M 0 8.95M /s/ Joseph Edelman Joseph Edelman, Managing Member
Joseph Edelman 8.2% 8.95M 0 8.95M /s/ Joseph Edelman Joseph Edelman
Perceptive Life Sciences Master Fund, Ltd. 8.2% 8.95M 0 8.95M /s/ Joseph Edelman Joseph Edelman, Managing Member