0000950170-23-072023.txt : 20231220 0000950170-23-072023.hdr.sgml : 20231220 20231220204431 ACCESSION NUMBER: 0000950170-23-072023 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20231220 DATE AS OF CHANGE: 20231220 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Icosavax, Inc. CENTRAL INDEX KEY: 0001786255 STANDARD INDUSTRIAL CLASSIFICATION: BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-40655 FILM NUMBER: 231502621 BUSINESS ADDRESS: STREET 1: 1930 BOREN AVE., SUITE 1000 CITY: SEATTLE STATE: WA ZIP: 98101 BUSINESS PHONE: (206) 737-0085 MAIL ADDRESS: STREET 1: 1930 BOREN AVE., SUITE 1000 CITY: SEATTLE STATE: WA ZIP: 98101 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Cearley Cassia CENTRAL INDEX KEY: 0001874017 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 1616 EASTLAKE AVENUE E. STREET 2: SUITE 208 CITY: SEATTLE STATE: WA ZIP: 98102 144 1 primary_doc.xml 144 0001874017 XXXXXXXX LIVE 0001786255 Icosavax, Inc. 001-40655 1930 Boren Avenue Suite 1000 Seattle WA 98101 206-737-0085 Cassia Cearley Officer Common Stock Morgan Stanley Smith Barney LLC

Executive Financial Services 1 New York Plaza, 38th Floor New York NY 10004

7934 122637 50090341 12/20/2023 NASDAQ Common Stock 12/20/2023 Shares acquired upon vesting of restricted stock units Issuer N 29817 12/20/2023 Services Rendered N Cassia Cearley

1930 Boren Avenue, Suite 1000 Seattle WA 98101

Common Stock 12/13/2023 8759 140190.42 Reflects shares to be sold to cover withholding taxes upon vesting of restricted stock unit awards pursuant to a Rule 10b5-1 instruction letter dated December 8, 2021. 12/20/2023 12/08/2021 /s/ Cassia Cearley