8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15 (d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported): November 14, 2022

Summit Materials, Inc.

(Exact name of registrant as specified in its charter)

Delaware	001-36873	47-1984212
(State or Other Jurisdiction	(Commission	(I.R.S. Employer
of Incorporation)	File Number)	Identification No.)

1801 California Street, Suite 3500

Denver, Colorado 80202

(Address of Principal Executive Offices) (Zip Code)

 Registrant’s Telephone Number, Including Area Code:  (303) 893-0012

1550 Wynkoop Street, 3rd Floor

Denver, Colorado 80202 

(Former Name or Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐     Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐     Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐     Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐     Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Class A Common Stock (par value, $0.01 per share)	SUM	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company             ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.                                  ☐

Item 5.02    Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers;

Compensatory Arrangements of Certain Officers.  

Deon MacMillan, Executive Vice President, Chief People Officer and Head of Corporate Communications of Summit Materials, Inc. (the “Company”), will be leaving the Company effective November 14, 2022. Ms. MacMillan’s departure constitutes a termination without “cause” under the Company’s Executive Severance Plan.

Item 7.01     Regulation FD Disclosure.

Effective upon Ms. MacMillan’s departure, Karli Anderson, Executive Vice President, Chief ESG Officer and Head of Investor Relations of the Company will assume leadership of the Company’s human resources and communications functions. As of the time of this report, the Company has not entered into any compensation arrangements with Ms. Anderson in connection with the announcement described above.

The information included under Item 7.01 of report is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of such section. The information in Item 7.01 of this Current Report on Form 8-K shall not be incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Exchange Act, unless specifically incorporated by reference into any such filing.

SIGNATURES

    Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

	SUMMIT MATERIALS, INC.
DATED: November 14, 2022
	By:	/s/ Christopher B. Gaskill
	Name:	Christopher B. Gaskill
	Title:	EVP, Chief Legal Officer & Secretary

XML

Cover Document	Nov. 14, 2022
Cover [Abstract]
Document Type	8-K
Document Period End Date	Nov. 14, 2022
Entity Registrant Name	Summit Materials, Inc.
Entity Incorporation, State or Country Code	DE
Entity File Number	001-36873
Entity Tax Identification Number	47-1984212
Entity Address, Address Line One	1801 California Street
Entity Address, Address Line Two	Suite 3500
Entity Address, City or Town	Denver
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80202
City Area Code	303
Local Phone Number	893-0012
Written Communications	false
Soliciting Material	false
Pre-commencement Tender Offer	false
Pre-commencement Issuer Tender Offer	false
Title of 12(b) Security	Class A Common Stock (par value, $0.01 per share)
Trading Symbol	SUM
Security Exchange Name	NYSE
Entity Emerging Growth Company	false
Entity Central Index Key	0001621563
Amendment Flag	false
Entity Addresses [Line Items]
Entity Address, Address Line Two	Suite 3500
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80202
Entity Address, Address Line One	1801 California Street
Entity Address, City or Town	Denver
Former Address
Cover [Abstract]
Entity Address, Address Line One	1550 Wynkoop Street
Entity Address, Address Line Two	3rd Floor
Entity Address, City or Town	Denver
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80202
Entity Addresses [Line Items]
Entity Address, Address Line Two	3rd Floor
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80202
Entity Address, Address Line One	1550 Wynkoop Street
Entity Address, City or Town	Denver