Charles DePriest - 20 Dec 2024 Form 4 Insider Report for Summit Materials, Inc.

Role
Title: EVP, East Segment Construction Materials
Signature
/s/ Christopher B. Gaskill, as Attorney-in-Fact
Issuer symbol
N/A
Transactions as of
20 Dec 2024
Net transactions value
-$373,144
Form type
4
Filing time
26 Dec 2024, 16:16:34 UTC
Previous filing
16 Dec 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 +794 +6.9% 12,267 20 Dec 2024 Direct F1, F2, F3
transaction SUM Class A Common Stock Options Exercise +305 +2.5% 12,572 20 Dec 2024 Direct F1
transaction SUM Class A Common Stock Options Exercise +4,195 +33% 16,767 20 Dec 2024 Direct F1
transaction SUM Class A Common Stock Options Exercise +11,083 +66% 27,850 20 Dec 2024 Direct F1
transaction SUM Class A Common Stock Tax liability $373,144 -7,389 -27% $50.50 20,461 20 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 Restricted Stock Units Options Exercise $0 -794 -100% $0.000000 0 20 Dec 2024 Class A Common Stock 794 Direct F4, F5, F6
transaction SUM Restricted Stock Units Options Exercise $0 -305 -100% $0.000000 0 20 Dec 2024 Class A Common Stock 305 Direct F4, F5, F7
transaction SUM Restricted Stock Units Options Exercise $0 -4,195 -100% $0.000000 0 20 Dec 2024 Class A Common Stock 4,195 Direct F4, F5, F8
transaction SUM Restricted Stock Units Options Exercise $0 -11,083 -100% $0.000000 0 20 Dec 2024 Class A Common Stock 11,083 Direct F4, F5, F9
* 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 Total holdings include shares of Class A Common Stock received pursuant to a stock dividend paid on December 29, 2022.
F3 Total holdings include shares of Class A Common Stock acquired through the Issuer's Employee Stock Purchase Plan on October 18, 2022, May 28, 2023, November 30, 2023, May 31, 2024 and November 30, 2024.
F4 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.
F5 Reflects the accelerated vesting of restricted stock units for the purpose of reducing or eliminating the excise tax imposed under Sections 280G and 4999 of the Internal Revenue Code of 1986, as amended, that would be imposed on amounts payable to the Reporting Person in connection with the consummation of the transactions contemplated by the Agreement and Plan of Merger, dated as of November 24, 2024, by and among the Issuer, Quikrete Holdings, Inc. (Purchaser), and Soar Subsidiary, Inc., a wholly owned subsidiary of Purchaser.
F6 These restricted stock units would otherwise vest on February 28, 2025.
F7 These restricted stock units would otherwise vest on December 15, 2025.
F8 These restricted stock units would otherwise vest in two equal annual installments on each of February 28, 2025 and February 28, 2026.
F9 These restricted stock units would otherwise vest in three equal annual installments on each of February 28, 2025, February 28, 2026 and February 28, 2027.

Remarks:

Title: EVP, East Segment Construction Materials