United Therapeutics Corporation (UTHR) — Form 144: Proposed sale of shares

Martine Rothblatt, who is a Director and Officer of United Therapeutics Corporation, filed to propose the sale of 119,410 shares of Common stock with an aggregate market value of $71,493,155.20 through Morgan Stanley Smith Barney LLC Executive Financial Services. The shares were acquired through the exercise of stock options on November 2, 2026. The proposed sale is associated with a trading plan adopted on November 21, 2025. Shares may be sold by Martine Rothblatt and/or the Martine Rothblatt Property Management Trust.