0001950047-25-005490.txt : 20250806 0001950047-25-005490.hdr.sgml : 20250806 20250806162249 ACCESSION NUMBER: 0001950047-25-005490 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20250806 DATE AS OF CHANGE: 20250806 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Avidity Biosciences, Inc. CENTRAL INDEX KEY: 0001599901 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences EIN: 461336960 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-39321 FILM NUMBER: 251189997 BUSINESS ADDRESS: STREET 1: 10578 SCIENCE CENTER DRIVE STREET 2: SUITE 125 CITY: SAN DIEGO STATE: CA ZIP: 92121 BUSINESS PHONE: 858-401-7900 MAIL ADDRESS: STREET 1: 10578 SCIENCE CENTER DRIVE STREET 2: SUITE 125 CITY: SAN DIEGO STATE: CA ZIP: 92121 FORMER COMPANY: FORMER CONFORMED NAME: Avidity Biosciences LLC DATE OF NAME CHANGE: 20161227 FORMER COMPANY: FORMER CONFORMED NAME: Avidity NanoMedicines LLC DATE OF NAME CHANGE: 20140211 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: MacLean Michael F CENTRAL INDEX KEY: 0001383731 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 14 CAMBRIDGE CENTER CITY: CAMBRIDGE STATE: MA ZIP: 02142 144 1 primary_doc.xml 144 0001383731 XXXXXXXX LIVE 0001599901 Avidity Biosciences, Inc. 001-39321 10578 Science Center Drive, Suite 125 San Diego CA 92121 8584017900 MICHAEL MACLEAN Officer Common Morgan Stanley Smith Barney LLC Executive Financial Services

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30914 1182769.64 120538359 08/06/2025 NASDAQ Common 12/17/2024 Performance Stock Units Issuer N 30914 12/17/2024 N/A Y The securities to be sold were acquired upon the vesting of performance stock units during the period of 12/17/2024 through 03/19/2025 08/06/2025 07/08/2024 /s/ Michael Maclean