Summit Materials, Inc. (NYSE:SUM) Q4 2020 Earnings Conference Call February 24, 2021 11:00 AM ET Company Participants Karli Anderson - Head of Investor Relations Anne Noonan - Chief Executive Officer Brian Harris - Chief Financial Officer Conference Call Participants Stanley Elliott - Stifel Phil Ng - Jefferies Kathryn Thompson - Thompson Research Courtney Yakavonis - Morgan Stanley Paul Roger - Exane BNP Paribas Trey Grooms - Stephens Inc Garik Shmois - Loop Capital Anthony Pettinari - Citi Mike Dahl - RBC ...