WhitTier Trust Company’s Summit Materials, Inc. Class A Common Stock SUM Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2020 Q4	–	Sell	-873	Closed	-$14K	–	1008
2020 Q3	$14K	Hold	873	–	–	﹤0.01%	783
2020 Q2	$14K	Hold	873	–	–	﹤0.01%	759
2020 Q1	$13K	Hold	873	–	–	﹤0.01%	759
2019 Q4	$20K	Sell	873 -414	-32%	-$9.39K	﹤0.01%	752
2019 Q3	$28K	Hold	1,287	–	–	﹤0.01%	690
2019 Q2	$24K	Sell	1,287 -151	-11%	-$2.4K	﹤0.01%	708
2019 Q1	$22K	Hold	1,438	–	–	﹤0.01%	729
2018 Q4	$18K	Hold	1,438	–	–	﹤0.01%	752
2018 Q3	$26K	Sell	1,438 -459	-24%	-$9.98K	﹤0.01%	713
2018 Q2	$49K	Buy	1,897 +330	+21%	+$9.19K	﹤0.01%	612
2018 Q1	$47K	Hold	1,567	–	–	﹤0.01%	620
2017 Q4	$48K	Hold	1,567	–	–	﹤0.01%	581
2017 Q3	$49K	Hold	1,567	–	–	﹤0.01%	542
2017 Q2	$44K	Hold	1,567	–	–	﹤0.01%	556
2017 Q1	$38K	Hold	1,567	–	–	﹤0.01%	580
2016 Q4	$36K	Buy	+1,567	New	+$32.9K	﹤0.01%	589