William Blair Investment Management’s Oil States International OIS Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Shares Change %	Capital Flow	Portfolio Weight	Portfolio Position
2018 Q3	–	Sell	-9,930	Closed	-$319K	–	470
2018 Q2	$319K	Buy	+9,930	New	+$319K	﹤0.01%	452
2015 Q4	–	Sell	-13,149	Closed	-$344K	–	459
2015 Q3	$344K	Buy	+13,149	New	+$344K	﹤0.01%	1020