The Vanguard Group 13D and 13G filings for Ionis Pharmaceuticals, Inc.:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Shares have been adjusted for stock splits.
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2025-01-08 11:29 am Purchase | 2024-12-31 | 13G | Ionis Pharmaceuticals, Inc. IONS | The Vanguard Group | 16,472,539 10.430% | 2,269,058 (+15.98%) | Filing |
| 2024-02-13 5:07 pm Sale | 2023-12-29 | 13G | Ionis Pharmaceuticals, Inc. IONS | The Vanguard Group | 14,203,481 9.900% | -211,436 (-1.47%) | Filing |
| 2023-06-09 2:15 pm Purchase | 2023-05-31 | 13G | Ionis Pharmaceuticals, Inc. IONS | The Vanguard Group | 14,414,917 10.070% | 868,223 (+6.41%) | Filing |
| 2023-02-09 11:22 am Purchase | 2022-12-30 | 13G | Ionis Pharmaceuticals, Inc. IONS | The Vanguard Group | 13,546,694 9.540% | 1,539,618 (+12.82%) | Filing |
| 2022-02-10 08:17 am Sale | 2021-12-31 | 13G | Ionis Pharmaceuticals, Inc. IONS | The Vanguard Group | 12,007,076 8.500% | -237,312 (-1.94%) | Filing |
| 2021-02-10 11:03 am Purchase | 2020-12-31 | 13G | Ionis Pharmaceuticals, Inc. IONS | The Vanguard Group | 12,244,388 8.760% | 277,996 (+2.32%) | Filing |
| 2020-02-12 09:23 am Purchase | 2019-12-31 | 13G | Ionis Pharmaceuticals, Inc. IONS | The Vanguard Group | 11,966,392 8.500% | 137,004 (+1.16%) | Filing |