Rock Springs Capital Management’s Tandem Diabetes Care TNDM Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2017 Q4	–	Sell	-56,250	Closed	-$411K	–	151
2017 Q3	$411K	Hold	56,250	–	–	0.02%	142
2017 Q2	$450K	Sell	56,250 -3,250	-5%	-$30K	0.02%	145
2017 Q1	$714K	Hold	59,500	–	–	0.04%	136
2016 Q4	$1.28M	Hold	59,500	–	–	0.09%	119
2016 Q3	$4.56M	Hold	59,500	–	–	0.29%	91
2016 Q2	$4.49M	Buy	59,500 +3,250	+6%	+$262K	0.33%	87
2016 Q1	$4.9M	Hold	56,250	–	–	0.41%	79
2015 Q4	$6.64M	Buy	56,250 +2,000	+4%	+$198K	0.5%	68
2015 Q3	$4.78M	Buy	54,250 +750	+1%	+$87.3K	0.39%	84
2015 Q2	$5.8M	Buy	53,500 +5,920	+12%	+$736K	0.42%	81
2015 Q1	$6M	Buy	47,580 +12,580	+36%	+$1.64M	0.56%	63
2014 Q4	$4.45M	Buy	35,000 +7,300	+26%	+$1.01M	0.52%	59
2014 Q3	$3.72M	Buy	27,700 +8,200	+42%	+$1.15M	0.58%	53
2014 Q2	$3.17M	Buy	+19,500	New	+$3.32M	0.57%	61