<SEC-DOCUMENT>0000807985-19-000028-index.html : 20191210 <SEC-HEADER>0000807985-19-000028.hdr.sgml : 20191210 <ACCEPTANCE-DATETIME>20191210160014 ACCESSION NUMBER: 0000807985-19-000028 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20191210 DATE AS OF CHANGE: 20191210 SUBJECT COMPANY: 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 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-88815 FILM NUMBER: 191277709 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 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: SOUTHEASTERN ASSET MANAGEMENT INC/TN/ CENTRAL INDEX KEY: 0000807985 STANDARD INDUSTRIAL CLASSIFICATION: UNKNOWN SIC - 0000 [0000] IRS NUMBER: 620951781 STATE OF INCORPORATION: TN FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 6410 POPLAR AVENUE STE 900 CITY: MEMPHIS STATE: TN ZIP: 38119 BUSINESS PHONE: 9017612474 MAIL ADDRESS: STREET 1: 6410 POPLAR AVENUE STREET 2: SUITE 900 CITY: MEMPHIS STATE: TN ZIP: 38119 FORMER COMPANY: FORMER CONFORMED NAME: PROFESSIONAL PORTFOLIO MANAGEMENT INC DATE OF NAME CHANGE: 19890314 FORMER COMPANY: FORMER CONFORMED NAME: SOUTHEASTERN ASSET MANAGEMENT INC DATE OF NAME CHANGE: 19880622 </SEC-HEADER> <DOCUMENT> <TYPE>SC 13G/A <SEQUENCE>1 <FILENAME>sum13g-1.txt <DESCRIPTION>SUMMIT MATERIALS, INC. - 13G AMENDMENT <TEXT> Document 1 - file: sum13g-1.txt
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