March 9, 2026 · Form 4 insider transaction
O'NEIL PATRICK R. sold 10,148 shares of Ionis Pharmaceuticals, Inc. at $75.25 per share, a transaction worth $763.7K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 2 days after the transaction.
Shares sold pursuant to a Rule 10b5-1 Trading Plan adopted by the reporting person on December 8, 2025.; The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $74.98 to $75.51 inclusive. The reporting person undertakes to provide to Ionis Pharmaceuticals, Inc. any security holder of Ionis Pharmaceuticals, Inc. or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) on this Form 4.