Prothena Corporation plc has announced new employment agreements for key executives at its subsidiary, Prothena Biosciences Inc. Effective July 30, 2025, Tran B. Nguyen, Chief Strategy Officer and CFO; Brandon S. Smith, COO; and Wagner M. Zago, Ph.D., Chief Scientific Officer, will receive annual base salaries of $603,792, $544,201, and $518,000 respectively. Each will be eligible for a discretionary annual cash bonus, with target percentages set at 50% for Nguyen and Smith, and 40% for Zago. In cases of termination without cause or resignation with good reason, the executives will receive severance benefits including 100% of their base salary and target bonus, plus up to 12 months of health coverage. These benefits increase to 150% of base salary and target bonus, and up to 18 months of health coverage, if termination occurs in connection with a change in control. The agreements also include provisions for accelerated vesting of equity awards.