A.R.T. Advisors’s Dropbox DBX Stock Holding History

Quarter	Market Value	Status	Shares	Shares Change %	Trade Value	Portfolio Weight	Portfolio Position
2019 Q2	–	Sell	-16,195	Closed	-$353K	–	1404
2019 Q1	$353K	Sell	16,195 -42,605	-72%	-$929K	0.02%	867
2018 Q4	$1.2M	Sell	58,800 -73,900	-56%	-$1.51M	0.08%	381
2018 Q3	$3.56M	Buy	+132,700	New	+$3.56M	0.16%	154