January 6, 2026 · Form 4 insider transaction
O'Brien Patrick sold 540 shares of Arrowhead Pharmaceuticals, Inc. at $0.00 per share, a transaction worth N/A. The trade was recorded as gift and disclosed on an SEC Form 4, filed 2 days after the transaction.
Gift to relatives; Includes previously reported shares of common stock underlying Restricted Stock Units granted to the Reporting person, a portion of which are still subject to certain vesting conditions.