Annual Reports


Click the link to the right to download: Adobe Acrobat

2020 Annual Meeting Information

Event: Summit Materials, Inc. 2020 Annual Meeting of Stockholders
Date: Tuesday, May 19, 2020
Time: 8:00 AM Mountain Time
Rules and Agenda: Click here

Additional Information:

The Summit Materials 2020 Annual Meeting of Stockholders will be a completely “virtual meeting”, conducted via live audio webcast on the Internet. You will be able to attend the Annual Meeting as well as vote and submit your questions during the live audio webcast of the meeting by visiting and entering the control number included in our notice of internet availability of the proxy materials.

Online registration will begin 15 minutes before the Annual Meeting. If you encounter any difficulties accessing the audio webcast of the Annual Meeting, please call 800-586-1548 (U.S.) or 303-562-9288 (International) for assistance. Technical support will be available beginning at 7:30 a.m., Mountain Time, on May 19, 2020 through the conclusion of the Annual Meeting. To access the proxy materials, please visit