0001950047-24-003736.txt : 20240515 0001950047-24-003736.hdr.sgml : 20240515 20240515163110 ACCESSION NUMBER: 0001950047-24-003736 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240515 DATE AS OF CHANGE: 20240515 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Amylyx Pharmaceuticals, Inc. CENTRAL INDEX KEY: 0001658551 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 464600503 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-41199 FILM NUMBER: 24951537 BUSINESS ADDRESS: STREET 1: 43 THORNDIKE STREET CITY: CAMBRIDGE STATE: MA ZIP: 02141 BUSINESS PHONE: 617-683-0917 MAIL ADDRESS: STREET 1: 43 THORNDIKE STREET CITY: CAMBRIDGE STATE: MA ZIP: 02141 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Mazzariello Gina CENTRAL INDEX KEY: 0001913765 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: C/O AMYLYX PHARMACEUTICALS, INC. STREET 2: 43 THORNDIKE STREET CITY: CAMBRIDGE STATE: MA ZIP: 02141 144 1 primary_doc.xml 144 0001913765 XXXXXXXX LIVE 0001658551 Amylyx Pharmaceuticals, Inc. 001-41199 43 THORNDIKE STREET CAMBRIDGE MA 02141 617-683-0917 GINA MAZZARIELLO Officer COMMON Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

10455 19550.85 68005749 05/15/2024 NASDAQ Common 02/22/2024 Restricted Stock Units Issuer N 10455 02/22/2024 N/A Y The securities to be sold were acquired upon the vesting of restricted stock units during the period of 2/22/2024 through 3/1/2024 05/15/2024 12/14/2023 /s/ Gina Mazzariello