A.R.T. Advisors’s Dawson Geophysical DWSN Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Shares Change %	Capital Flow	Portfolio Weight	Portfolio Position
2018 Q2	–	Sell	-20,997	Closed	-$134K	–	1502
2018 Q1	$134K	Buy	+20,997	New	+$134K	0.01%	1330