A.R.T. Advisors’s Mersana Therapeutics MRSN Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Shares Change %	Capital Flow	Portfolio Weight	Portfolio Position
2019 Q4	–	Sell	-1,932	Closed	-$76K	–	1581
2019 Q3	$76K	Buy	1,932 +1,116	+137%	+$43.9K	﹤0.01%	1285
2019 Q2	$83K	Sell	816 -221	-21%	-$22.5K	﹤0.01%	1218
2019 Q1	$136K	Buy	+1,037	New	+$136K	0.01%	1138