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Form DEFA14A - Additional definitive proxy soliciting materials and Rule 14(a)(12) material:
SEC Accession No. 0001104659-23-043594
Filing Date
2023-04-10
Accepted
2023-04-10 16:17:29
Documents
3

Document Format Files

Seq Description Document Type Size
1 DEFA14A tm231817d4_defa14a.htm DEFA14A 11831
2 GRAPHIC tm231817d4_defa14aimg001.jpg GRAPHIC 159420
3 GRAPHIC tm231817d4_defa14aimg002.jpg GRAPHIC 102697
  Complete submission text file 0001104659-23-043594.txt   374094
Mailing Address 1550 WYNKOOP STREET, 3RD FLOOR DENVER CO 80202
Business Address 1550 WYNKOOP STREET, 3RD FLOOR DENVER CO 80202 303-893-0012
Summit Materials, Inc. (Filer) CIK: 0001621563 (see all company filings)

IRS No.: 471984212 | State of Incorp.: DE | Fiscal Year End: 1231
Type: DEFA14A | Act: 34 | File No.: 001-36873 | Film No.: 23811333
SIC: 1400 Mining & Quarrying of Nonmetallic Minerals (No Fuels)
Office of Energy & Transportation