Summit Materials Announces Fourth Quarter and Full Year 2021 Results Conference Call Date

DENVER--(BUSINESS WIRE)-- Summit Materials, Inc. (NYSE: SUM, “Summit” or the “Company”), a leading vertically integrated construction materials company, today announced that it will release fourth quarter and full year 2021 financial results after the market closes on Wednesday, February 23, 2022. A conference call will be held on Thursday, February 24, 2022 at 11:00 a.m. eastern time (9:00 a.m. mountain time) to review Summit’s financial results, discuss recent events and conduct a question-and-answer session.

A webcast of the fourth quarter and full year 2021 results conference call and accompanying presentation materials will be available in the Investors section of Summit’s website at investors.summit-materials.com or at the following link: https://event.on24.com/wcc/r/3578265/7A3DFFCA13D12D7E90C4325F6D60C0F9

To participate in the live teleconference for fourth quarter and full year 2021 financial results:

Domestic Live:	1-877-823-8690
International Live:	1-825-312-2236
Conference ID:	1944867
Password:	Summit

To listen to a replay of the teleconference, which will be available through March 3, 2022:

Domestic Replay:	1-800-585-8367
International Replay:	1-416-621-4642
Conference ID:	1944867

About Summit Materials, Inc.

Summit Materials is a leading vertically integrated materials-based company that supplies aggregates, cement, ready-mix concrete and asphalt in the United States and British Columbia, Canada. Summit is a geographically diverse, materials-based business of scale that offers customers a single-source provider of construction materials and related downstream products in the public infrastructure, residential and non-residential end markets. Summit has a strong track record of successful acquisitions since its founding and continues to pursue growth opportunities in new and existing markets. For more information about Summit Materials, please visit www.summit-materials.com.

View source version on businesswire.com: https://www.businesswire.com/news/home/20220118005916/en/

Karli Anderson

EVP, Chief Environmental, Social & Governance Officer and Head of Investor Relations

Summit Materials, Inc.

karli.anderson@summit-materials.com

303-875-3886

Source: Summit Materials, Inc.