David Loomes - Jan 12, 2024 Form 3 Insider Report for Summit Materials, Inc. (SUM)

Role
Title: EVP, Cement Exhibit 24 - Power of Attorney
Signature
/s/ David Hamm, as Attorney-in-Fact
Stock symbol
SUM
Transactions as of
Jan 12, 2024
Transactions value $
$0
Form type
3
Date filed
1/19/2024, 05:43 PM
Next filing
Mar 4, 2024

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
holding SUM Class A Common Stock 11.9K Jan 12, 2024 Direct F1, F2

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
holding SUM Restricted Stock Units Jan 12, 2024 Class A Common Stock 2.7K Direct F3, F4
holding SUM Restricted Stock Units Jan 12, 2024 Class A Common Stock 4.5K Direct F4, F5
holding SUM Restricted Stock Units Jan 12, 2024 Class A Common Stock 7.77K Direct F4, F6
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Total holdings include shares of Class A Common Stock received pursuant to a stock dividend paid on December 29, 2022.
F2 Total holdings include shares of Class A Common Stock acquired through the Issuer's Employee Stock Purchase Plan on October 18, 2022, May 28, 2023 and November 30, 2023.
F3 These restricted stock units vest on February 28, 2024.
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 The Reporting Person was granted 6,750 restricted stock units that vest in three equal annual installments beginning on February 28, 2023.
F6 The Reporting Person was granted 7,766 restricted stock units that vest in three equal annual installments beginning on February 28, 2024.

Remarks:

Title: EVP, Cement Exhibit 24 - Power of Attorney