0001972362-24-000661.txt : 20240513 0001972362-24-000661.hdr.sgml : 20240513 20240513175954 ACCESSION NUMBER: 0001972362-24-000661 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240513 DATE AS OF CHANGE: 20240513 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Summit Materials, Inc. CENTRAL INDEX KEY: 0001621563 STANDARD INDUSTRIAL CLASSIFICATION: MINING, QUARRYING OF NONMETALLIC MINERALS (NO FUELS) [1400] ORGANIZATION NAME: 01 Energy & Transportation IRS NUMBER: 471984212 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-36873 FILM NUMBER: 24940646 BUSINESS ADDRESS: STREET 1: 1550 WYNKOOP STREET, 3RD FLOOR CITY: DENVER STATE: CO ZIP: 80202 BUSINESS PHONE: 303-893-0012 MAIL ADDRESS: STREET 1: 1550 WYNKOOP STREET, 3RD FLOOR CITY: DENVER STATE: CO ZIP: 80202 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Kilgore Jason CENTRAL INDEX KEY: 0002006214 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 1801 CALIFORNIA STREET STREET 2: SUITE 3500 CITY: DENVER STATE: CO ZIP: 80202 144 1 primary_doc.xml 144 0002006214 XXXXXXXX LIVE 0001621563 Summit Materials, Inc. 001-36873 1801 CALIFORNIA STREET, SUITE 3500 DENVER CO 80202 303-893-0012 Kilgore Jason Officer COMMON Morgan Stanley Smith Barney LLC Executive Services

200 W Civic Center Dr - 4th Floor SANDY UT 84070

50589 2054419.29 175500000 05/13/2024 NYSE COMMON 05/13/2024 STOCK OPTION EXERCISE ISSUER N 50589 05/13/2024 COMPENSATION Y 05/13/2024 /s/ Jason Thomas Kilgore