Adage Capital Partners’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
2025 Q1	–	Sell	-1,405,712	Closed	-$71.1M	–	982
2024 Q4	$71.1M	Buy	1,405,712 +1,291,223	+1,128%	+$60.3M	0.12%	159
2024 Q3	$4.47M	Buy	+114,489	New	+$4.4M	0.01%	726
2021 Q2	–	Sell	-1,003,742	Closed	-$27.7M	–	1076
2021 Q1	$27.7M	Sell	1,003,742 -262,756	-21%	-$6.6M	0.06%	353
2020 Q4	$25M	Sell	1,266,498 -2,134,553	-63%	-$39.7M	0.05%	356
2020 Q3	$55.3M	Sell	3,401,051 -222,097	-6%	-$3.56M	0.14%	167
2020 Q2	$57.3M	Sell	3,623,148 -684,550	-16%	-$9.82M	0.15%	163
2020 Q1	$63.5M	Buy	4,307,698 +786,250	+22%	+$15.3M	0.19%	138
2019 Q4	$82.8M	Sell	3,521,448 -128,040	-4%	-$2.91M	0.2%	131
2019 Q3	$79.7M	Sell	3,649,488 -2,971,782	-45%	-$58.7M	0.2%	132
2019 Q2	$125M	Sell	6,621,270 -429,359	-6%	-$6.83M	0.31%	79
2019 Q1	$110M	Sell	7,050,629 -704,466	-9%	-$11M	0.28%	93
2018 Q4	$94.6M	Buy	7,755,095 +2,491,650	+47%	+$34.4M	0.26%	107
2018 Q3	$94.1M	Buy	5,263,445 +305,100	+6%	+$6.64M	0.21%	121
2018 Q2	$128M	Buy	4,958,345 +1,609,050	+48%	+$44.8M	0.29%	83
2018 Q1	$99.7M	Sell	3,349,295 -160,349	-5%	-$4.95M	0.23%	114
2017 Q4	$108M	Buy	3,509,644 +412,495	+13%	+$12.4M	0.25%	109
2017 Q3	$96.2M	Hold	3,097,149	–	–	0.23%	120
2017 Q2	$86.7M	Sell	3,097,149 -206,248	-6%	-$5.37M	0.21%	140
2017 Q1	$79.2M	Sell	3,303,397 -180,484	-5%	-$4.23M	0.2%	145
2016 Q4	$80.4M	Sell	3,483,881 -12,222	-0.3%	-$256K	0.22%	124
2016 Q3	$62.1M	Buy	3,496,103 +1,408,877	+67%	+$27.3M	0.17%	154
2016 Q2	$40.9M	Buy	+2,087,226	New	+$41.7M	0.11%	222

Other funds holding SUM