Exhibit 99.1 UNAUDITED CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS FOR THE THREE MONTHS ENDED MARCH 31, 2022 GH RESEARCH PLC Condensed consolidated interim statement of comprehensive income | | | Three months ended | | | --- | --- | --- | --- | | | | March 31, | | | | | 2022 | 2021 | | | Note | $'000 | $'000 | | Operating expenses | | | | | Research and development | | (4,714) | (692) | | General and administration | | (3,292) | (448) | | Loss from operations | | (8,006) | (1,140) | | Foreign curren ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 19 ...

Exhibit 99.1 GH Research Reports Full Year 2021 Financial Results and Provides Business Updates Dublin, Ireland, March 28, 2022 – GH Research PLC (Nasdaq: GHRS), a clinical-stage biopharmaceutical company dedicated to transforming the treatment of psychiatric and neurological disorders, today reported financial results for the full year ended December 31, 2021 and gave updates on its business. Fourth Quarter 2021 Business Highlights In December 2021, we reported the successful outcome of the Phase 2 part of ...

GH Research Corporate Presentation GH Research PLC (NASDAQ: GHRS) March 2022 2022© GH Research PLC 1 Disclaimer Regarding Forward-Looking Statements This presentation has been prepared by GH Research PLC ("GH Research") for informational purposes only and not for any other purpose. Nothing contained in this presentation is, or should be construed as, a recommendation, promise or representation by the presenter or GH Research or any director, employee, agent, or adviser of GH Research. This presentation does ...