T. Rowe Price Investment Management, Inc. - Jan 31, 2025 SCHEDULE 13G/A Report for IONIS PHARMACEUTICALS INC COMMON STOCK (IONS)

Filing Manager: T. Rowe Price Investment Management, Inc.
Reporting Manager: T. Rowe Price Investment Management, Inc.
Security: IONIS PHARMACEUTICALS INC COMMON STOCK
Symbol: IONS
Shares outstanding: 159M shares
Disclosed Ownership: 15.9M shares
Ownership: 10%
Form type: SCHEDULE 13G/A
Date filed: 2/7/2025, 11:55 AM
Date of event: Jan 31, 2025
SEC: View on sec.gov

Reporting Managers (1)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
T. Rowe Price Investment Management, Inc.	10%	15.9M	15.8M	0	Ellen York	Vice President

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