0001628280-23-005898.txt : 20230301 0001628280-23-005898.hdr.sgml : 20230301 20230301174209 ACCESSION NUMBER: 0001628280-23-005898 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230228 FILED AS OF DATE: 20230301 DATE AS OF CHANGE: 20230301 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Anderson Karli S. CENTRAL INDEX KEY: 0001577417 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36873 FILM NUMBER: 23695309 MAIL ADDRESS: STREET 1: 1660 WYNKOOP STREET, SUITE 1000 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] 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 wf-form4_167771051285247.xml FORM 4 X0306 4 2023-02-28 0 0001621563 Summit Materials, Inc. SUM 0001577417 Anderson Karli S. C/O SUMMIT MATERIALS, INC. 1801 CALIFORNIA STREET, SUITE 3500 DENVER CO 80202 0 1 0 0 See Remarks Class A Common Stock 2023-02-28 4 M 0 2201 A 16798 D Class A Common Stock 2023-02-28 4 M 0 2369 A 19167 D Class A Common Stock 2023-02-28 4 M 0 2409 A 21576 D Class A Common Stock 2023-02-28 4 F 0 3169 29.54 D 18407 D Restricted Stock Units 2023-02-28 4 M 0 2201 0 D Class A Common Stock 2201.0 0 D Restricted Stock Units 2023-02-28 4 M 0 2369 0 D Class A Common Stock 2369.0 2369 D Restricted Stock Units 2023-02-28 4 M 0 2409 0 D Class A Common Stock 2409.0 4818 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 April 14, 2022 and October 18, 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 vest in three equal annual installments beginning on February 28, 2021. These restricted stock units vest in three equal annual installments beginning on February 28, 2022. These restricted stock units vest in three equal annual installments beginning on February 28, 2023. Title: EVP, Chief People and ESG Officer and Head of Communications /s/ Christopher B. Gaskill, as Attorney-in-Fact 2023-03-01