Jason Kilgore - 10 Feb 2025 Form 4 Insider Report for Summit Materials, Inc.

Footnote F1

At or immediately prior to the effective time of the transactions contemplated by the Agreement and Plan of Merger, dated November 24, 2024, by and among Summit Materials, Inc., Quikrete Holdings, Inc., and Soar Subsidiary, Inc., (i) each share of Class A common stock of the issuer held by the reporting person was canceled, retired and converted into the right to receive $52.50 in cash (the "Merger Consideration"), (ii) each restricted stock unit held by the reporting person was fully vested, canceled and converted into the right to receive the Merger Consideration, (iii) each performance stock unit award held by the reporting person was vested based on target performance, canceled and converted into the right to receive the Merger Consideration and (iv) each stock option was fully vested, canceled and converted into the right to receive an amount equal to the excess of the Merger Consideration over the applicable exercise price.

Footnote F2

Reflects the securities held by a limited liability company for the benefit of Mr. Kilgore's family, for which Mr. Kilgore's spouse serves as manager.