BlackRock Institutional Trust’s Patterson-UTI PTEN Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2016 Q4	$118M	Buy	4,396,441 +12,300	+0.3%	+$304K	0.02%	821
2016 Q3	$98.1M	Buy	4,384,141 +5,212	+0.1%	+$105K	0.02%	885
2016 Q2	$93.4M	Buy	4,378,929 +132,356	+3%	+$2.49M	0.02%	891
2016 Q1	$74.8M	Buy	4,246,573 +46,873	+1%	+$699K	0.01%	994
2015 Q4	$63.3M	Buy	4,199,700 +54,673	+1%	+$841K	0.01%	1114
2015 Q3	$54.5M	Buy	4,145,027 +26,444	+0.6%	+$419K	0.01%	1184
2015 Q2	$77.5M	Sell	4,118,583 -655,412	-14%	-$13.6M	0.01%	1050
2015 Q1	$89.6M	Buy	4,773,995 +692,350	+17%	+$11.9M	0.01%	994
2014 Q4	$67.7M	Sell	4,081,645 -50,110	-1%	-$1.06M	0.01%	1097
2014 Q3	$134M	Buy	4,131,755 +159,910	+4%	+$5.43M	0.02%	689
2014 Q2	$139M	Sell	3,971,845 -132,393	-3%	-$4.35M	0.02%	707
2014 Q1	$130M	Buy	4,104,238 +161,549	+4%	+$4.49M	0.02%	741
2013 Q4	$99.8M	Buy	3,942,689 +188,507	+5%	+$4.51M	0.02%	861
2013 Q3	$80.3M	Sell	3,754,182 -177,989	-5%	-$3.66M	0.02%	913
2013 Q2	$76.1M	Buy	+3,932,171	New	+$85.8M	0.02%	899