Duncan Moore's Form 3 Filing for GH Research PLC Director Share Ownership

This Form 3 filing discloses the initial beneficial ownership of GH Research PLC securities by Duncan Moore, a director of the company. The filing reports Moore's ownership of 14,600 ordinary shares and five separate share option grants totaling 72,340 options with an exercise price of $0.025 per share. The options have various vesting schedules and expiration dates ranging from 2030 to 2032. The filing includes a power of attorney executed on March 7, 2026, authorizing designated individuals to file Forms 3, 4, and 5 on Moore's behalf. This represents standard disclosure of director ownership as required under Section 16 of the Securities Exchange Act of 1934.