Karli S. Anderson - Jan 15, 2025 Form 4 Insider Report for Summit Materials, Inc. (SUM)

Role
Title: EVP, Chief People and ESG Officer and Head of Communications
Signature
/s/ Christopher B. Gaskill, as Attorney-in-Fact
Stock symbol
SUM
Transactions as of
Jan 15, 2025
Transactions value $
-$120,976
Form type
4
Date filed
1/17/2025, 05:28 PM
Previous filing
Dec 26, 2024
Next filing
Feb 10, 2025
SEC
View on sec.gov

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SUM Class A Common Stock Award $0 +7.59K +17.64% $0.00 50.6K Jan 16, 2025 Direct F1
transaction SUM Class A Common Stock Tax liability -$121K -2.32K -4.58% $52.19 48.3K Jan 16, 2025 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 +15.3K $0.00 15.3K Jan 15, 2025 Class A Common Stock 15.3K Direct F2, F3
* 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 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.
F3 These restricted stock units vest in three equal annual installments beginning on January 15, 2026.

Remarks:

Title: EVP, Chief People and ESG Officer and Head of Communications