Summit Materials, Inc. (NYSE:SUM) Q3 2021 Earnings Conference Call November 4, 2021 11:00 AM ET Company Participants Karli Anderson - EVP, Chief Environmental, Social & Governance Officer and Head, IR Anne Noonan - President, CEO & Director Brian Harris - EVP & CFO Conference Call Participants Stanley Elliott - Stifel, Nicolaus & Company Trey Grooms - Stephens Inc. Asher Sohnen - Citi Group Courtney Yakavonis - Morgan Stanley Garik Shmois - Loop Capital Markets Collin Verron - Jefferies Timna Tanners - Wolf ...