PROTHENA CORP PUBLIC LTD CO: Chief development officer resigns Oct 9, 2026

What happened Prothena Corp Public Ltd Co filed a Form 8-K reporting that on Oct 2, 2026 Chad J. Swanson, Ph.D., Chief Development Officer, notified the company that he is resigning effective Oct 9, 2026. The filing says Dr. Swanson is resigning to accept a position with one of the company’s strategic partners and, as part of his new role, will assume a leadership role over a program partnered with the company.

Key details

• Notification date: Oct 2, 2026.
• Resignation effective date: Oct 9, 2026.
• Officer: Chad J. Swanson, Ph.D., Chief Development Officer.
• Reason in filing: accepting a position with one of the company’s strategic partners and will lead a partnered program.

Why it may matter The filing reports Item 5.02: Departure of directors or certain officers, which covers resignations and related officer changes. A filing does not show why the insider traded or why the company acted.