Ionis announces $700 million convertible notes offering to refinance 2026 debt

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Ionis Announces Proposed Convertible Offering to Refinance 2026 Convertible Notes

November 11, 2025 4:05 PM EST

- Refinancing transaction with proceeds to be utilized to repurchase or repay the 2026 Convertible Notes prior to or at maturity

CARLSBAD, Calif.--(BUSINESS WIRE)-- Ionis Pharmaceuticals, Inc. (NASDAQ: IONS) announced today that it intends to offer, subject to market conditions and other factors, $700.0 million aggregate principal amount of Convertible Senior Notes due 2030 (the notes) in a private placement (the offering) to qualified institutional buyers pursuant to Rule 144A under the Securities Act of 1933, as amended (the Securities Act). Ionis also intends to grant the initial purchasers of the notes an option to... More