BlackRock Institutional Trust’s Merrimack Pharmaceuticals, Inc. MACK Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2016 Q4	$13.1M	Sell	407,541 -34,298	-8%	-$1.46M	﹤0.01%	2241
2016 Q3	$22.1M	Buy	441,839 +57,001	+15%	+$2.37M	﹤0.01%	1824
2016 Q2	$16.3M	Buy	384,838 +23,615	+7%	+$1.29M	﹤0.01%	1979
2016 Q1	$23.8M	Sell	361,223 -7,888	-2%	-$412K	﹤0.01%	1699
2015 Q4	$22.9M	Buy	369,111 +40,943	+12%	+$2.88M	﹤0.01%	1764
2015 Q3	$22M	Buy	328,168 +33,022	+11%	+$2.7M	﹤0.01%	1777
2015 Q2	$28.7M	Sell	295,146 -12,431	-4%	-$1.18M	﹤0.01%	1670
2015 Q1	$28.7M	Buy	307,577 +73,796	+32%	+$6.28M	﹤0.01%	1704
2014 Q4	$20.8M	Buy	233,781 +90,593	+63%	+$6.6M	﹤0.01%	1875
2014 Q3	$9.89M	Sell	143,188 -10,525	-7%	-$562K	﹤0.01%	2353
2014 Q2	$8.82M	Sell	153,713 -1,242	-0.8%	-$63.1K	﹤0.01%	2509
2014 Q1	$6.14M	Buy	154,955 +3,460	+2%	+$148K	﹤0.01%	2701
2013 Q4	$6.35M	Sell	151,495 -5,355	-3%	-$155K	﹤0.01%	2675
2013 Q3	$4.68M	Sell	156,850 -15,549	-9%	-$544K	﹤0.01%	2768
2013 Q2	$9.14M	Buy	+172,399	New	+$7.56M	﹤0.01%	2370