Form 4 Filing for Victoria Vakiener at Arrowhead Pharmaceuticals, Inc.

Victoria Vakiener, a director at Arrowhead Pharmaceuticals, Inc. (ARWR), reported the sale of 2799 shares of Common Stock on December 19, 2025. The sale was executed under a 10b5-1 trading plan at a weighted average price of $66.63 per share. Following this transaction, Vakiener owns 42964 shares. Additionally, Vakiener reported the sale of 5281 shares at a weighted average price of $67.97 and 1960 shares at a weighted average price of $68.39 on the same date, also under the 10b5-1 plan. These transactions are part of Vakiener's overall reporting, which includes shares underlying Restricted Stock Units that are still subject to vesting conditions. The sales occurred at prices ranging between $66.52 to $68.53.