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Washington, D.C. 20549












Date of report (Date of earliest event reported): March 29, 2021




Summit Materials, Inc.

(Exact name of registrant as specified in its charter)





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


1550 Wynkoop Street, 3rd Floor
Denver, Colorado 80202

(Address of Principal Executive Offices) (Zip Code)


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


Not Applicable

(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.


Michael J. Brady, Executive Vice President and Chief Business Development Officer of Summit Materials, Inc. (the “Company”), will be leaving the Company effective April 1, 2021 to pursue other business opportunities. Mr. Brady’s departure constitutes a termination without “cause” under the Company’s Executive Severance Plan.


Item 7.01  Regulation FD Disclosure.


On March 30, 2021 the Company announced several management changes, including the following appointments:


·Christopher B. Gaskill, Executive Vice President, Chief Legal Officer and Secretary;
·Deon MacMillan, Executive Vice President, Chief People Officer and Head of Corporate Communications;
·Karli Anderson, Executive Vice President, Chief ESG Officer and Head of Investor Relations.


A press release regarding the matters described above has been furnished as Exhibit 99.1 to this Current Report on Form 8-K.


The information in this report furnished pursuant to Item 7.01, including Exhibit 99.1 attached hereto, shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section. It may only be incorporated by reference in another filing under the Exchange Act or the Securities Act of 1933, as amended, if such subsequent filing specifically references the information furnished pursuant to Item 7.01 of this report.


Item 9.01  Financial Statements and Exhibits.


(d) Exhibits.


Exhibit No.     Description
99.1    Press release issued on March 30, 2021
104.1       Cover Page Interactive Data File (formatted as Inline XBRL and contained as Exhibit 101)






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.


  By: /s/ Christopher B. Gaskill
  Name: Christopher B. Gaskill
  Title: EVP, Chief Legal Officer & Secretary


DATED:  March 30, 2021