United Therapeutics Officer Files Form 144 for Routine $4.13M Share Sale

Executive Summary

On September 17, 2026, Paul Mahon, an Officer at United Therapeutics Corporation (NASDAQ: UTHR), submitted a Form 144 notice proposing the sale of 8,300 shares of common stock with an estimated aggregate market value of $4,129,607.73 (approx. $497.54 per share).

Transaction Details

• Security: Common Stock
• Shares to be Sold: 8,300
• Aggregate Market Value: $4,129,607.73
• Approximate Sale Date: September 17, 2026
• Broker: Morgan Stanley Smith Barney LLC Executive Financial Services
• Source of Shares: Stock option exercise from the issuer settled in cash on September 17, 2026.

Pattern and Trading Plan

The proposed sale is executed pursuant to a Rule 10b5-1 trading plan adopted on August 11, 2025. Over the preceding three months, the filer conducted regular bi-weekly sales of 8,300 shares each (September 3, August 20, August 6, July 16, July 2, and June 18, 2026), generating between $4.00M and $4.59M per tranche. Given the pre-scheduled and programmatic cadence under Rule 10b5-1, this transaction holds low directional signaling value for the company's operating performance.