• Dinesh V. Patel, President and CEO, exercised stock options for 75,000 shares at USD 21.58 on May 12, 2026.
• Patel sold 75,000 shares at a weighted average price of USD 100.12 on same day.
• Directly held common stock ended at 523,478 shares.
• Stock options held ended at 225,000.

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. Protagonist Therapeutics Inc. 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: 0001104659-26-059591), on May 12, 2026, and is solely responsible for the information contained therein.