0001209191-15-025815.txt : 20150312 0001209191-15-025815.hdr.sgml : 20150312 20150312202400 ACCESSION NUMBER: 0001209191-15-025815 CONFORMED SUBMISSION TYPE: 3 PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20150312 FILED AS OF DATE: 20150312 DATE AS OF CHANGE: 20150312 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: 1227 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: OWNER DATA: COMPANY CONFORMED NAME: Kahr Julia CENTRAL INDEX KEY: 0001635219 FILING VALUES: FORM TYPE: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 001-36873 FILM NUMBER: 15697389 MAIL ADDRESS: STREET 1: BLACKSTONE STREET 2: 345 PARK AVE. CITY: NEW YORK STATE: NY ZIP: 10154 3 1 doc3.xml FORM 3 SUBMISSION X0206 3 2015-03-12 1 0001621563 Summit Materials, Inc. SUM 0001635219 Kahr Julia C/O THE BLACKSTONE GROUP L.P. 345 PARK AVENUE NEW YORK NY 10154 1 0 0 0 Ms. Kahr, an employee of The Blackstone Group L.P. ("Blackstone") or one of its affiliates, is a member of the board of directors of the issuer. Certain affiliates of Blackstone have filed a separate Form 3 reporting securities of the issuer that they may be deemed to beneficially own. Ms. Kahr disclaims beneficial ownership of any securities of the issuer that may be deemed to be beneficially owned by affiliates of Blackstone. Exhibit 24 - Power of Attorney /s/ Anne Lee Benedict, as Attorney-in-Fact 2015-03-12 EX-24 2 attachment1.htm EX-24 DOCUMENT

                               POWER OF ATTORNEY

        Know all by these presents that the undersigned, does hereby make,
constitute and appoint each of Anne Lee Benedict and Jennifer Rose, or any one
of them, as a true and lawful attorney-in-fact of the undersigned with full
powers of substitution and revocation, for and in the name, place and stead of
the undersigned (in the undersigned's individual capacity), to execute and
deliver such forms that the undersigned may be required to file with the U.S.
Securities and Exchange Commission as a result of the undersigned's ownership of
or transactions in securities of Summit Materials, Inc. (i) pursuant to Section
16(a) of the Securities Exchange Act of 1934, as amended, including without
limitation, statements on Form 3, Form 4 and Form 5 (including any amendments
thereto) and (ii) in connection with any applications for EDGAR access codes,
including without limitation the Form ID. The Power of Attorney shall remain in
full force and effect until the undersigned is no longer required to file Forms
3, 4 and 5 with regard to his or her ownership of or transactions in securities
of Summit Materials, Inc., unless earlier revoked in writing. The undersigned
acknowledges that Anne Lee Benedict and Jennifer Rose are not assuming any of
the undersigned's responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934, as amended.

                                        By:
                                              /s/ Julia C. Kahr
                                              -----------------
                                              Name: Julia C. Kahr

                                        Date: March 10, 2015