TimesSquare Capital Management’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
2019 Q2	–	Sell	-2,692,081	Closed	-$42M	–	236
2019 Q1	$42M	Sell	2,692,081 -762,666	-22%	-$11.9M	0.32%	131
2018 Q4	$42.1M	Buy	3,454,747 +513,857	+17%	+$7.1M	0.36%	115
2018 Q3	$52.6M	Buy	2,940,890 +510,380	+21%	+$11.1M	0.35%	114
2018 Q2	$62.7M	Buy	2,430,510 +709,889	+41%	+$19.8M	0.42%	95
2018 Q1	$51.2M	Buy	1,720,621 +131,550	+8%	+$4.06M	0.35%	114
2017 Q4	$49.1M	Sell	1,589,071 -301,436	-16%	-$9.07M	0.32%	120
2017 Q3	$58.7M	Sell	1,890,507 -1,274,864	-40%	-$36.2M	0.39%	101
2017 Q2	$88.6M	Buy	3,165,371 +77,962	+3%	+$2.03M	0.57%	55
2017 Q1	$74M	Buy	3,087,409 +1,281,318	+71%	+$30.1M	0.48%	73
2016 Q4	$41.7M	Sell	1,806,091 -833,182	-32%	-$17.5M	0.28%	147
2016 Q3	$46.9M	Buy	2,639,273 +398,592	+18%	+$7.71M	0.3%	131
2016 Q2	$43.9M	Buy	2,240,681 +388,412	+21%	+$7.76M	0.29%	132
2016 Q1	$34.5M	Buy	1,852,269 +692,107	+60%	+$11.3M	0.23%	157
2015 Q4	$22.3M	Buy	1,160,162 +498,120	+75%	+$10.2M	0.14%	196
2015 Q3	$11.7M	Sell	662,042 -15,253	-2%	-$351K	0.07%	219
2015 Q2	$16.3M	Sell	677,295 -209,841	-24%	-$4.98M	0.09%	220
2015 Q1	$18.6M	Buy	+887,136	New	+$18M	0.1%	216