Christopher B. Gaskill - Dec 10, 2024 Form 4 Insider Report for Summit Materials, Inc. (SUM)

Role
Title: EVP, Chief Legal Officer & Secretary
Signature
/s/ Christopher B. Gaskill
Stock symbol
SUM
Transactions as of
Dec 10, 2024
Transactions value $
-$41,503
Form type
4
Date filed
12/11/2024, 04:08 PM
Previous filing
Mar 8, 2024
Next filing
Jan 17, 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 $36.7K +1.54K +3.82% $23.89 41.8K Dec 10, 2024 Direct F1
transaction SUM Class A Common Stock Sale -$78.2K -1.54K -3.68% $50.91 40.2K Dec 10, 2024 Direct F2
transaction SUM Class A Common Stock Gift $0 -169 -0.42% $0.00 40.1K Dec 10, 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 -1.54K -100% $0.00 0 Dec 10, 2024 Class A Common Stock 1.54K $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