Christopher Burke Gaskill - 15 Jan 2025 Form 4 Insider Report for Summit Materials, Inc.

Role
Title: EVP, Chief Legal Officer and Secretary
Signature
/s/ Christopher B. Gaskill
Issuer symbol
N/A
Transactions as of
15 Jan 2025
Net transactions value
-$200,932
Form type
4
Filing time
17 Jan 2025, 17:27:01 UTC
Previous filing
11 Dec 2024
Next filing
10 Feb 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 +8,491 +21% $0.000000 48,543 16 Jan 2025 Direct F1
transaction SUM Class A Common Stock Tax liability $200,932 -3,850 -7.9% $52.19 44,693 16 Jan 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 +15,289 $0.000000 15,289 15 Jan 2025 Class A Common Stock 15,289 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 Legal Officer and Secretary