January 16, 2026 · Form 4 insider transaction
Birchler Brian sold 8,480 shares of Ionis Pharmaceuticals, Inc. at $75.11 per share, a transaction worth $636.9K. The trade was recorded as open-market sale and disclosed on an SEC Form 4, filed 4 days after the transaction.
The sale was made pursuant to an automatic sale to cover the required tax withholding obligations pursuant to the 2011 Equity Incentive Plan Restricted Stock Unit Agreement and Grant Notice.; The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $75.07 to $75.14 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 (3) on this Form 4.