Annual Reports


Click the link to the right to download: Adobe Acrobat

2021 Annual Meeting Information

Event: Summit Materials, Inc. 2021 Annual Meeting of Stockholders
Date: Wednesday, May 19, 2021
Time: 8:00 AM Mountain Time
Rules and Agenda

Additional Information:

The Summit Materials 2021 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 virtual web conference of the Annual Meeting, please call the numbers listed on the login page. Technical support will be available beginning 15 minutes before the start of the meeting and through the conclusion of the Annual Meeting. To access the proxy materials, please visit