Prothena (PRTA) Proxy filing summary

Executive summary

• Annual General Meeting scheduled for May 14, 2026, in Dublin, Ireland, with voting available online or in person.

• Shareholders are encouraged to review proxy materials and annual report before voting.

Voting matters and shareholder proposals

• Election of two directors, Shane M. Cooke and Dennis J. Selkoe, to serve until the 2029 AGM unless earlier disqualified.

• Ratification of KPMG LLP as independent auditor for fiscal year 2026, with audit committee authorized to set remuneration.

• Advisory vote on executive compensation for named executive officers.

• Provision for other business to be transacted as may properly come before the meeting.

Board of directors and corporate governance

• Board recommends voting in favor of all proposals, including director elections and auditor ratification.