Summit Materials, Inc. (NYSE:SUM, "Summit" or the "Company"))), a leading vertically integrated construction materials company, today announced that it will release first quarter 2022 financial results after the market closes on Wednesday, May 4, 2022. A conference call will be held on Thursday, May 5, 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 first quarter 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://events.q4inc.com/attendee/420213312

To participate in the live teleconference for first quarter 2022 financial results:

Domestic Live:		1-888-330-3416
International Live:		1-646-960-0820
Conference ID:		1542153

To listen to a replay of the teleconference, which will be available through May 12, 2022:

Domestic Replay:		1-800-770-2030
International Replay:		1-647-362-9199
Conference ID:		1542153

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.

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Summit Materials Announces First Quarter 2022 Results Conference Call Date