• Adaptive Biotechnologies President and COO Julie Rubinstein sold 35,643 shares on Oct. 9, Oct. 12, Oct. 13.
• Sales prices: $26.41, $25.35, $26.07, $25.5.
• Holdings fell to 377,802 shares following the transactions.
• Trades followed option exercises of 11,881 shares at $12.14 on each date.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Adaptive Biotechnologies Corporation published the original content used to generate this news brief via EDGAR, the Electronic Data Gathering, Analysis, and Retrieval system operated by the U.S. Securities and Exchange Commission (Ref. ID: 0001780664-26-000039), on October 13, 2026, and is solely responsible for the information contained therein.