Brian Harris - Feb 28, 2022 Form 4 Insider Report for Summit Materials, Inc. (SUM)

Role
EVP & Chief Financial Officer
Signature
/s/ Christopher B. Gaskill, as Attorney-in-Fact
Stock symbol
SUM
Transactions as of
Feb 28, 2022
Transactions value $
-$846,749
Form type
4
Date filed
3/1/2022, 04:53 PM
Previous filing
Aug 3, 2021
Next filing
Mar 3, 2022

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction SUM Class A Common Stock Options Exercise +9.82K +7.55% 140K Feb 28, 2022 Direct F1
transaction SUM Class A Common Stock Options Exercise +6.64K +4.75% 146K Feb 28, 2022 Direct F1
transaction SUM Class A Common Stock Options Exercise +5.6K +3.82% 152K Feb 28, 2022 Direct F1
transaction SUM Class A Common Stock Award $0 +58.9K +38.75% $0.00 211K Feb 28, 2022 Direct F2
transaction SUM Class A Common Stock Tax liability -$847K -27.1K -12.86% $31.22 184K Feb 28, 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 -9.82K -33.33% $0.00 19.6K Feb 28, 2022 Class A Common Stock 9.82K Direct F3, F4
transaction SUM Restricted Stock Units Options Exercise $0 -6.64K -33.33% $0.00 13.3K Feb 28, 2022 Class A Common Stock 6.64K Direct F3, F5
transaction SUM Restricted Stock Units Options Exercise $0 -5.6K -33.34% $0.00 11.2K Feb 28, 2022 Class A Common Stock 5.6K Direct F3, F6
* 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 Reflects shares of Class A Common Stock earned and delivered on performance units previously granted based upon the satisfaction of certain performance criteria.
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 The Reporting Person was granted 29,460 restricted stock units that vest in three equal annual installments beginning on February 28, 2020.
F5 The Reporting Person was granted 19,905 restricted stock units that vest in three equal annual installments beginning on February 28, 2021.
F6 The Reporting Person was granted 16,786 restricted stock units that vest in three equal annual installments beginning on February 28, 2022.