Karli S. Anderson - Sep 3, 2022 Form 4 Insider Report for Summit Materials, Inc. (SUM)

Role
Title: EVP, Chief ESG Officer and Head of Investor Relations
Signature
/s/ Christopher B. Gaskill, as Attorney-in-Fact
Stock symbol
SUM
Transactions as of
Sep 3, 2022
Transactions value $
-$12,292
Form type
4
Date filed
9/6/2022, 04:46 PM
Previous filing
Aug 1, 2022
Next filing
Feb 24, 2023

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SUM Class A Common Stock Options Exercise +1K +7.35% 14.6K Sep 3, 2022 Direct F1, F2
transaction SUM Class A Common Stock Tax liability -$12.3K -439 -3.01% $28.00 14.2K Sep 3, 2022 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 -1K -100% $0.00* 0 Sep 3, 2022 Class A Common Stock 1K 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 365 shares acquired through the Issuer's Employee Stock Purchase Plan on 4/14/2022.
F3 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.
F4 On September 3, 2019, the Reporting Person was granted 3,000 restricted stock units that vest in three equal annual installments beginning on September 3, 2020.

Remarks:

Title: EVP, Chief ESG Officer and Head of Investor Relations