Ownership

Jason Kilgore - EVP, West Segment Construction Materials at Summit Materials, Inc.

Insider Transactions and Holdings

Entity Type: Individual
Role: EVP, West Segment Construction Materials
Stock Symbol: SUM on NYSE
Industry: Mining & Quarrying of Nonmetallic Minerals (No Fuels)
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Jason Kilgore - trading volume in the past year for Summit Materials, Inc.

	Shares	%	Avg Price	Total $
Buys
Sells	-50.6K	100%	$40.21	-$2.03M
Net	-50.6K	-100%		-$2.03M

Holdings reported by Jason Kilgore for Summit Materials, Inc.

Security	Num Shares	Value	Price $	Transaction Date	Ownership	Underlying Class	Underlying Amount
Class A Common Stock	0	$0	$52.50	Feb 10, 2025	Direct
Class A Common Stock	0	$0	$52.50	Feb 10, 2025	Indirect
Performance Stock Units	0	$0	$52.50	Feb 10, 2025	Direct	Class A Common Stock
Restricted Stock Units	0	$0	$52.50	Feb 10, 2025	Direct	Class A Common Stock
Option (right to buy)	0			Feb 10, 2025	Direct	Class A Common Stock
Options (right to buy)	0			May 13, 2024	Direct	Class A Common Stock

Transactions reported by Jason Kilgore for Summit Materials, Inc.

Sym	Class	Transaction	%	Value $	* Price $	Shares	Shares After	Date	Ownership

* An asterisk sign (*) next to the price indicates that the price is likely invalid.