0001628280-24-008668.txt : 20240304 0001628280-24-008668.hdr.sgml : 20240304 20240304181857 ACCESSION NUMBER: 0001628280-24-008668 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240229 FILED AS OF DATE: 20240304 DATE AS OF CHANGE: 20240304 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Loomes David CENTRAL INDEX KEY: 0002006209 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36873 FILM NUMBER: 24717099 MAIL ADDRESS: STREET 1: 1801 CALIFORNIA STREET STREET 2: SUITE 3500 CITY: DENVER STATE: CO ZIP: 80202 ISSUER: 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 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 4 1 wk-form4_1709594326.xml FORM 4 X0508 4 2024-02-29 0 0001621563 Summit Materials, Inc. SUM 0002006209 Loomes David 1801 CALIFORNIA STREET SUITE 3500 DENVER CO 80202 0 1 0 0 See Remarks 0 Class A Common Stock 2024-02-29 4 M 0 2703 A 14598 D Class A Common Stock 2024-02-29 4 M 0 2250 A 16848 D Class A Common Stock 2024-02-29 4 M 0 2589 A 19437 D Class A Common Stock 2024-02-29 4 F 0 2295 42.71 D 17142 D Restricted Stock Units 2024-02-29 4 M 0 2703 0 D Class A Common Stock 2703 0 D Restricted Stock Units 2024-02-29 4 M 0 2250 0 D Class A Common Stock 2250 2250 D Restricted Stock Units 2024-02-29 4 M 0 2589 0 D Class A Common Stock 2589 5177 D Reflects restricted stock units that upon vesting converted into shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis. Total holdings include shares of Class A Common Stock received pursuant to a stock dividend paid on December 29, 2022. Total holdings include shares of Class A Common Stock acquired through the Issuer's Employee Stock Purchase Plan on October 18, 2022, May 28, 2023 and November 30, 2023. Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee. These restricted stock units vested on February 29, 2024. The Reporting Person was granted 6,750 restricted stock units that vest in three equal annual installments beginning on February 28, 2023. The Reporting Person was granted 7,766 restricted stock units that vest in three equal annual installments beginning on February 29, 2024. Title: EVP, Cement /s/ David Hamm, as Attorney-in-Fact 2024-03-04