Historical shareholding details of Artisan Partners Limited Partnership holdings in Ionis Pharmaceuticals Inc (IONS)

Monthly changes of Artisan Partners Limited Partnership shareholding in Ionis Pharmaceuticals Inc over the previous months

Month	Name	Total no. shares held	Percent Holding
Month	Name	Total no. shares held	Percent Holding
Mar 31, 2025	Artisan Partners Limited Partnership	172,806	0.11%

Feb 28, 2025	Artisan Partners Limited Partnership	172,806	0.11%

Jan 31, 2025	Artisan Partners Limited Partnership	172,806	0.11%

Dec 31, 2024	Artisan Partners Limited Partnership	252,635	0.16%
Dec 31, 2024	Artisan Partners Limited Partnership	172,806	0.11%

Nov 30, 2024	Artisan Partners Limited Partnership	905,576	0.57%

Oct 31, 2024	Artisan Partners Limited Partnership	905,576	0.57%

Sep 30, 2024	Artisan Partners Limited Partnership	2,240,455	1.42%
Sep 30, 2024	Artisan Partners Limited Partnership	905,576	0.57%

Aug 31, 2024	Artisan Partners Limited Partnership	753,350	0.52%

Jul 31, 2024	Artisan Partners Limited Partnership	753,350	0.52%

Jun 30, 2024	Artisan Partners Limited Partnership	1,671,036	1.06%
Jun 30, 2024	Artisan Partners Limited Partnership	253,390	0.17%

May 31, 2024	Artisan Partners Limited Partnership	253,390	0.17%

Apr 30, 2024	Artisan Partners Limited Partnership	253,390	0.17%

Mar 31, 2024	Artisan Partners Limited Partnership	416,729	0.29%
Mar 31, 2024	Artisan Partners Limited Partnership	253,390	0.17%