Schedule 13G ownership disclosure
IONIS PHARMACEUTICALS INC
COMMON STOCK · CUSIP: 462222100
Event date: 2025-12-31
- Filing-level shares
- 9,108,019
- Percent of class
- 5.6%
- T. Rowe Price Investment Management, Inc.
Shares: 9,108,019 · Class: 5.6%
Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.
Source: SEC EDGAR filingFiling metadata
- Accession number
- 0001897612-26-000248
- Form type
- SCHEDULE 13G/A
- Filer
- IONIS PHARMACEUTICALS INC
- CIK
- CIK 874015
- Filed
- Feb 17, 2026
- Reporting period
- Dec 31, 2025
- Description
- Schedule 13G beneficial ownership