X0607 3 2026-03-18 0 0001855129 GH Research PLC GHRS 0002126827 Forer Michael true C/O GH RESEARCH PLC, JOSHUA DAWSON HOUSE DAWSON STREET DUBLIN L2 D02 RY95 IRELAND true Ordinary Shares 45509 D Share Options (Right to Buy) 0.025 2030-09-26 Ordinary Shares 6633 D Share Options (Right to Buy) 0.025 2031-06-22 Ordinary Shares 5508 D Share Options (Right to Buy) 0.025 2031-07-06 Ordinary Shares 5532 D Share Options (Right to Buy) 0.025 2031-12-09 Ordinary Shares 50000 D Share Options (Right to Buy) 0.025 2032-09-03 Ordinary Shares 4667 D The share options are fully vested and exercisable. The share options are fully vested and, subject to the rules of the GH Research PLC Share Option Plan, may be exercised between the second and seventh anniversary of June 22, 2024. The share options are fully vested and, subject to the rules of the GH Research PLC Share Option Plan, may be exercised between the second and seventh anniversary of July 6, 2024. The share options vested as to 25% on December 9, 2025, and the remaining share options vest in equal monthly installments for three years thereafter. The share options are fully vested and, subject to the rules of the GH Research PLC Share Option Plan, may be exercised between the second and seventh anniversary of September 3, 2025. /s/ Michael Forer 2026-04-01