A.R.T. Advisors’s Northwest Natural Holdings NWN Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2019 Q4	–	Sell	-12,186	Closed	-$869K	–	1604
2019 Q3	$869K	Buy	12,186 +3,100	+34%	+$220K	0.04%	609
2019 Q2	$631K	Buy	9,086 +4,000	+79%	+$271K	0.04%	651
2019 Q1	$334K	Buy	+5,086	New	+$319K	0.02%	895
2017 Q3	–	Sell	-25,300	Closed	-$1.51M	–	1563
2017 Q2	$1.51M	Buy	25,300 +12,800	+102%	+$774K	0.08%	354
2017 Q1	$738K	Buy	+12,500	New	+$738K	0.03%	665
2016 Q1	–	Sell	-8,061	Closed	-$407K	–	1569
2015 Q4	$407K	Sell	8,061 -3,000	-27%	-$144K	0.02%	947
2015 Q3	$506K	Sell	11,061 -9,008	-45%	-$396K	0.02%	870
2015 Q2	$846K	Buy	20,069 +9,334	+87%	+$423K	0.03%	787
2015 Q1	$514K	Buy	+10,735	New	+$520K	0.02%	901
2014 Q3	–	Sell	-5,070	Closed	-$239K	–	1461
2014 Q2	$239K	Buy	+5,070	New	+$227K	0.01%	1061
2013 Q4	–	Sell	-6,018	Closed	-$252K	–	1437
2013 Q3	$252K	Sell	6,018 -25,533	-81%	-$1.09M	0.01%	1047
2013 Q2	$1.34M	Buy	+31,551	New	+$1.38M	0.04%	519