IONIS PHARMACEUTICALS INC 4

EVP/Chief Development Officer Holly B. Kordasiewicz sold 362 shares of Ionis Pharmaceuticals common stock for roughly $30.5K under a Rule 10b5-1 plan.

On July 7, 2026, Holly B. Kordasiewicz, EVP and Chief Development Officer of Ionis Pharmaceuticals Inc., sold 362 shares of the company’s common stock at an average price of approximately $84.30 per share under a pre-arranged Rule 10b5-1 trading plan, for total proceeds of about $30,507, leaving her with 22,096 shares of common stock held directly following the transaction.

Filing Facts

CIK

874015

Ticker

IONS

Form

4

Source Type

fda

Accession

0000874015-26-000236

Alert Tier

5