Christopher Burke Gaskill - 10 Dec 2024 Form 4 Insider Report for Summit Materials, Inc.

Role
Title: EVP, Chief Legal Officer & Secretary
Signature
/s/ Christopher B. Gaskill
Issuer symbol
N/A
Transactions as of
10 Dec 2024
Net transactions value
-$41,503
Form type
4
Filing time
11 Dec 2024, 16:08:33 UTC
Previous filing
08 Mar 2024
Next filing
17 Jan 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 Options Exercise $36,695 +1,536 +3.8% $23.89 41,757 10 Dec 2024 Direct F1
transaction SUM Class A Common Stock Sale $78,198 -1,536 -3.7% $50.91 40,221 10 Dec 2024 Direct F2
transaction SUM Class A Common Stock Gift $0 -169 -0.42% $0.000000 40,052 10 Dec 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 Options (right to buy) Options Exercise $0 -1,536 -100% $0.000000 0 10 Dec 2024 Class A Common Stock 1,536 $23.89 Direct F3
* 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 acquired through the Issuer's Employee Stock Purchase Plan on May 31, 2024 and November 30, 2024.
F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $50.91 to $50.915, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above. The Reporting Person remains within compliance of the Issuer's equity ownership guidelines.
F3 These options are fully vested.

Remarks:

Title: EVP, Chief Legal Officer & Secretary