Exhibit 1
JOINT FILING AGREEMENT
In accordance with Rule 13d-1 (f) under the Securities Exchange Act of
1934, as amended, the undersigned hereby agree to the joint filing with all
other Reporting Entities (as such term is defined in the Schedule 13G) on
of each of them of a statement on Schedule 13G (including amendments thereto)
behalf with respect to the Class A Common Stock,$0.01 par value, of Summit
Materials Inc., and that this Agreement be included as an Exhibit to such
joint filing. This Agreement may be executed in any number of counterparts
all of which taken taken together shall constitute one and the same instrument.
IN WITNESS WHEREOF, the undersigned hereby execute this Agreement this
17th day of August, 2018.
XXXXX CAPITAL STRATEGIES, L.P.
By:/s/ XXXX X. XXXXX
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Xxxx X. Xxxxx
Chairman and Chief Executive Officer
Xxxxx Capital Strategies GP, LLC
By: Xxxx X. Xxxxx 2005 GRAT Separation Trust, as
Managing Member
By: /s/ Xxxxxxxxx Xxxxx
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Xxxxxxxxx Xxxxx, Trustee
LCS, LLC
BY:/s/ XXXX X. XXXXX
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Xxxx X. Xxxxx
General Partner
LCS EVENT PARTNERS, LLC
BY:/s/ XXXX X. XXXXX
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Xxxx X. Xxxxx
General Partner
LCS L/S, LLC
BY:/s/ Xxxx X. Xxxxx
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Xxxx X. Xxxxx
General Partner
By:/s/ XXXX X. XXXXX
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Xxxx X. Xxxxx
