ISIS Pharmaceuticals Inc

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ISIS Pharmaceuticals Inc
TickerIONS
CIK #0000874015
CUSIP462222100
SectorLife Sciences - Pharmaceutical Preparations
Address1896 Rutherford Road, Carlsbad, CA 92008
Source [EDGAR]
CIK Filing 2011 - 2025
[0000874015] 10-K
[0000874015] 10-Q
[0000874015] 3
[0000874015] 4
[0000874015] 5
[0000874015] 8-K
[0000874015] D
[0000874015] SC 13D
[0000874015] SC 13G
Form 13D/13G Filer Form 13D/13G Subject Filed % Owned
Capital World Investors Ionis Pharmaceuticals Inc [2025-02-13] 0.0
Wellington Management Group LLP Ionis Pharmaceuticals Inc [2024-11-08] 5.76
T Rowe Price Investment Management Inc Ionis Pharmaceuticals Inc [2024-02-14] 9.2
T Rowe Price Investment Management Inc Ionis Pharmaceuticals Inc [2023-02-14] 8.2
ARK Investment Management LLC Ionis Pharmaceuticals Inc [2022-02-09] 5.02
BlackRock Inc Ionis Pharmaceuticals Inc [2022-02-01] 6.0
Price T Rowe Associates Inc /MD/ Ionis Pharmaceuticals Inc [2021-02-16] 9.3
Biogen Inc Ionis Pharmaceuticals Inc [2018-06-07] 8.39
Wellington Management Group LLP Ionis Pharmaceuticals Inc [2018-02-08] 8.76
Ionis Pharmaceuticals Inc Akcea Therapeutics Inc [2017-07-27] 11.0
BlackRock Inc Ionis Pharmaceuticals Inc [2017-01-30] 5.3
Baillie Gifford & Co Ionis Pharmaceuticals Inc [2016-02-05] 6.73
Vanguard Group Inc ISIS Pharmaceuticals Inc [2013-02-13] 5.5
Artisan Partners Holdings LP ISIS Pharmaceuticals Inc [2013-02-06] 5.8
ISIS Pharmaceuticals Inc Regulus Therapeutics Inc [2012-10-19] 11.0
Clearbridge Advisors LLC ISIS Pharmaceuticals Inc [2012-02-14] 5.69
Form 3/4/5 Filer 2011 - 2025
Ionis Pharmaceuticals Inc
Bennett C Frank
Parshall B Lynne
Geary Richard S
Schneider Eugene
Monia Brett P
Hayden Michael R
Berthelsen Spencer R
Diaz Allene M.
Loscalzo Joseph
Yang Michael J
Wender Joseph H
Herman Joan E
Klein Joseph III
Jenne Kyle
Birchler Brian
Baroldi Joseph
Swayze Eric
O'Neil Patrick R
Hougen Elizabeth L
Devers Shannon L.
Cadoret-Manier Onaiza
Muto Frederick T
Reikes Peter N
Crooke Stanley T
Akcea Therapeutics Inc
Castleman Breaux
McDevitt Damien
Boyce Sarah
Regulus Therapeutics Inc.
Reed John C
Form 13F Holdings
Firm Period DFND Voting Shares
FMR LLC [2025-06-30] DFND 23,642,636 23,642,990
Vanguard Group Inc [2025-06-30] SOLE 0 16,438,969
Capital World Investors [2025-06-30] DFND 12,540,188 12,540,188
BlackRock, Inc. [2025-06-30] SOLE 10,183,695 10,896,544
Bellevue Group AG [2025-06-30] DFND 7,853,198 7,853,198
Wellington Management Group LLP [2025-06-30] DFND 0 6,345,776
Deep Track Capital LP [2025-06-30] SOLE 4,891,544 4,891,544
State Street Corp [2025-06-30] DFND 4,086,741 4,530,398
Adage Capital Partners GP LLC [2025-06-30] SOLE 3,800,000 3,800,000
Tweedy, Browne Co LLC [2025-06-30] SOLE 2,891,948 2,891,948
Geode Capital Management LLC [2025-06-30] DFND 2,891,095 2,891,095
Two Sigma Advisers LP [2025-06-30] SOLE 2,562,311 2,667,611
Millennium Management LLC [2025-06-30] SOLE 2,649,527 2,649,527
BVF Inc/IL [2025-06-30] DFND 0 1,913,385
Two Sigma Investments LP [2025-06-30] SOLE 1,788,367 1,788,367
Citadel Advisors LLC [2025-06-30] DFND 1,642,281 1,642,281
UBS Group AG [2025-06-30] DFND 1,511,548 1,529,323
Charles Schwab Investment Management Inc [2025-06-30] SOLE 1,487,818 1,487,818
Macquarie Group Ltd [2025-06-30] SOLE 1,434,073 1,434,073
Morgan Stanley [2025-06-30] DFND 1,082,395 1,362,209
TD Asset Management Inc [2025-06-30] SOLE 1,104,690 1,104,690
Balyasny Asset Management LP [2025-06-30] SOLE 1,028,648 1,028,648
Polar Capital Holdings Plc [2025-06-30] DFND 1,000,000 1,000,000
Bank of America Corp /DE/ [2025-06-30] DFND 44,940 995,890
ARK Investment Management LLC [2025-06-30] SOLE 900,318 900,318
Voloridge Investment Management LLC [2025-06-30] SOLE 854,634 854,634
Northern Trust Corp [2025-06-30] DFND 811,972 812,807
Goldman Sachs Group Inc [2025-06-30] DFND 745,123 759,578
Hudson Bay Capital Management LP [2025-06-30] SOLE 750,000 750,000
Woodline Partners LP [2025-06-30] SOLE 732,813 732,813
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