0001415889-24-011805.txt : 20240430 0001415889-24-011805.hdr.sgml : 20240430 20240430182827 ACCESSION NUMBER: 0001415889-24-011805 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240426 FILED AS OF DATE: 20240430 DATE AS OF CHANGE: 20240430 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Webster Stephen W CENTRAL INDEX KEY: 0001438421 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38663 FILM NUMBER: 24899126 MAIL ADDRESS: STREET 1: C/O OPTIMER PHARMACEUTICALS, INC STREET 2: 101 HUDSON STREET CITY: SAN DIEGO STATE: CA ZIP: 07302 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Gritstone bio, Inc. CENTRAL INDEX KEY: 0001656634 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 BUSINESS ADDRESS: STREET 1: 5959 HORTON STREET, SUITE 300 CITY: EMERYVILLE STATE: CA ZIP: 94608 BUSINESS PHONE: (510) 871-6100 MAIL ADDRESS: STREET 1: 5959 HORTON STREET, SUITE 300 CITY: EMERYVILLE STATE: CA ZIP: 94608 FORMER COMPANY: FORMER CONFORMED NAME: Gritstone Oncology, Inc. DATE OF NAME CHANGE: 20151023 4 1 form4-04302024_100421.xml X0508 4 2024-04-26 0001656634 Gritstone bio, Inc. GRTS 0001438421 Webster Stephen W C/O GRITSTONE BIO, INC. 5959 HORTON STREET, SUITE 300 EMERYVILLE CA 94608 true false false false 0 Stock Option (Right to Buy) 0.81 2024-04-26 4 A 0 103600 0 A 2034-04-25 Common Stock 103600 103600 D The option vests as to 1/36th of the total grant monthly beginning May 26, 2024 until such time as the option is 100% vested, subject to the continued service of the Reporting Person on each vesting date. /s/ Vassiliki Economides, Attorney-in-Fact for Stephen W. Webster 2024-04-30