0001104659-21-030933.txt : 20210302 0001104659-21-030933.hdr.sgml : 20210302 20210302192703 ACCESSION NUMBER: 0001104659-21-030933 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210228 FILED AS OF DATE: 20210302 DATE AS OF CHANGE: 20210302 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: CANTIE JOSEPH S CENTRAL INDEX KEY: 0001275621 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36873 FILM NUMBER: 21706200 MAIL ADDRESS: STREET 1: C/O DELPHI AUTOMOTIVE STREET 2: 5725 DELPHI DRIVE CITY: TROY STATE: MI ZIP: 48098 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: 1228 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 a4.xml 4 X0306 4 2021-02-28 0 0001621563 Summit Materials, Inc. SUM 0001275621 CANTIE JOSEPH S C/O SUMMIT MATERIALS, INC. 1550 WYNKOOP STREET, 3RD FLOOR DENVER CO 80202 1 0 0 0 Class A Common Stock 2021-02-28 4 M 0 5342 A 26289 D Class A Common Stock 5100 I See Footnote Restricted Stock Units 2021-02-28 4 M 0 5342 0 D Class A Common Stock 5342 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. Reflects securities held by a trust for the benefit of the Reporting Person, for which the Reporting Person and his spouse serve as trustees. 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 compensation committee. On February 28, 2020, the Reporting Person was granted 5,342 restricted stock units that vested on February 28, 2021. /s/Anne Lee Benedict, as Attorney-in-Fact 2021-03-02