Anne P. Noonan - Mar 7, 2024 Form 4 Insider Report for Summit Materials, Inc. (SUM)

Role
President & CEO, Director
Signature
/s/ Christopher B. Gaskill, as Attorney-in-Fact
Stock symbol
SUM
Transactions as of
Mar 7, 2024
Transactions value $
-$1,515,146
Form type
4
Date filed
3/8/2024, 08:21 PM
Previous filing
Mar 4, 2024
Next filing
Apr 22, 2024

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SUM Class A Common Stock Award $0 +81.7K +38.28% $0.00 295K Mar 7, 2024 Direct F1, F2, F3
transaction SUM Class A Common Stock Tax liability -$1.52M -35.7K -12.11% $42.39 259K Mar 7, 2024 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction SUM Restricted Stock Units Award $0 +71.5K $0.00 71.5K Mar 7, 2024 Class A Common Stock 71.5K Direct F4, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Reflects shares of Class A Common Stock earned and delivered on performance units previously granted based upon the satisfaction of certain performance criteria.
F2 Total holdings include shares of Class A Common Stock received pursuant to a stock dividend paid on December 29, 2022.
F3 Total holdings include shares of Class A Common Stock acquired through the Issuer's Employee Stock Purchase Plan on April 14, 2022 and May 28, 2023.
F4 Each restricted stock unit represents a contingent right to receive one share of Class A Common Stock. The restricted stock units will be settled in either Class A Common Stock or cash (or a combination thereof) at the discretion of the Issuer's Human Capital and Compensation Committee.
F5 These restricted stock units vest in three equal annual installments beginning on February 28, 2025.