0001628280-24-008675.txt : 20240304 0001628280-24-008675.hdr.sgml : 20240304 20240304182038 ACCESSION NUMBER: 0001628280-24-008675 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: LANCE HOWARD L CENTRAL INDEX KEY: 0001220679 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36873 FILM NUMBER: 24717118 MAIL ADDRESS: STREET 1: C/O SUMMIT MATERIALS, INC. STREET 2: 1550 WYNKOOP STREET, 3RD FLOOR 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_1709594425.xml FORM 4 X0508 4 2024-02-29 0 0001621563 Summit Materials, Inc. SUM 0001220679 LANCE HOWARD L C/O SUMMIT MATERIALS, INC. 1801 CALIFORNIA STREET, SUITE 3500 DENVER CO 80202 1 0 0 0 0 Class A Common Stock 2024-02-29 4 M 0 4038 A 16363 D Class A Common Stock 45772 I by Howard L. Lance TTEE Howard Lance Trust dated 09/01/2006 Restricted Stock Units 2024-02-29 4 M 0 4038 0 D Class A Common Stock 4038 0 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. Each restricted stock unit represents a contingent right to receive one share of Class A common stock of the Issuer ("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. /s/ Christopher B. Gaskill, as Attorney-in-Fact 2024-03-04