Susan Bobulsky Sells 5000 Shares of Adaptive Biotechnologies Corp Common Stock

Susan Bobulsky, Chief Commercial Officer, MRD of Adaptive Biotechnologies Corp, reported a sale of 5,000 shares of common stock on June 25, 2026. The transaction was executed at a price of $20.50 per share, with a total value of $102,500. Following this transaction, Ms. Bobulsky now owns 406,775 shares of common stock. This sale was conducted under a Rule 10b5-1 trading plan adopted on December 16, 2025. The filing is a Form 4, indicating a change in beneficial ownership.