Kekin Ghelani - Sep 15, 2023 Form 4 Insider Report for Summit Materials, Inc. (SUM)

Role
Chief Strategy&Growth Officer
Signature
/s/ David Hamm, as Attorney-in-Fact
Stock symbol
SUM
Transactions as of
Sep 15, 2023
Transactions value $
-$88,960
Form type
4
Date filed
9/18/2023, 04:32 PM
Previous filing
Feb 24, 2023
Next filing
Mar 1, 2024

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SUM Class A Common Stock Options Exercise +9.67K +977.45% 10.7K Sep 15, 2023 Direct F1, F2
transaction SUM Class A Common Stock Tax liability -$89K -2.78K -26.09% $32.00 7.88K Sep 15, 2023 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 Options Exercise $0 -9.67K -33.33% $0.00 19.3K Sep 15, 2023 Class A Common Stock 9.67K Direct F3, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Reflects restricted stock units that upon vesting converted into shares of Class A common stock of the Issuer ("Class A Common Stock") on a one-for-one basis.
F2 Includes 989 shares acquired through the Issuer's Employee Stock Purchase Plan on 5/28/23.
F3 Each restricted stock unit represents a contingent right to receive one share of Class A common stock of the Issuer ("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.
F4 These restricted stock units vest in three equal annual installments on September 15, 2023, February 28, 2024 and February 28, 2025.