DENVER, Jan. 9, 2025 /PRNewswire/ -- Summit Materials, Inc. (NYSE: SUM) ("Summit," "Summit Materials" or the "Company"), a leading producer of aggregates and cement, today announced the expiration of the waiting period under the Competition Act (Canada), as amended, in connection with Summit's previously announced definitive agreement to be acquired by Quikrete Holdings, Inc. ("Quikrete" or the "Purchaser") for $52.50 per share in cash (the "Merger"). The Merger is expected to close within the first quarter ...