Brown Brothers Harriman & Co’s Ionis Pharmaceuticals IONS Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$25.6K	Hold	341	–	–	﹤0.01%	1178
2025 Q4	$27K	Buy	+341	New	+$25.7K	﹤0.01%	1150
2021 Q3	–	Sell	-200	Closed	-$8	–	1194
2021 Q2	$8	Sell	200 -2,150	-91%	-$84.2K	﹤0.01%	926
2021 Q1	$106	Buy	2,350 +2,150	+1,075%	+$120K	﹤0.01%	512
2020 Q4	$11K	Buy	+200	New	+$9.97K	﹤0.01%	851
2020 Q2	–	Sell	-360	Closed	-$17K	–	1080
2020 Q1	$17K	Sell	360 -184	-34%	-$10.3K	﹤0.01%	649
2019 Q4	$33K	Sell	544 -6	-1%	-$357	﹤0.01%	729
2019 Q3	$33K	Buy	550 +179	+48%	+$11.7K	﹤0.01%	720
2019 Q2	$24K	Buy	371 +66	+22%	+$4.67K	﹤0.01%	701
2019 Q1	$25K	Buy	305 +123	+68%	+$7.93K	﹤0.01%	693
2018 Q4	$10K	Hold	182	–	–	﹤0.01%	693
2018 Q3	$9K	Hold	182	–	–	﹤0.01%	689
2018 Q2	$8K	Hold	182	–	–	﹤0.01%	691
2018 Q1	$8K	Sell	182 -95	-34%	-$4.83K	﹤0.01%	680
2017 Q4	$14K	Buy	277 +95	+52%	+$5.21K	﹤0.01%	707
2017 Q3	$9K	Hold	182	–	–	﹤0.01%	668
2017 Q2	$9K	Buy	+182	New	+$8.47K	﹤0.01%	667
2014 Q2	–	Sell	-17	Closed	-$1K	–	778
2014 Q1	$1K	Buy	+17	New	+$824	﹤0.01%	772