Lynx1 Capital Management LP Increases Stake in GH Research PLC to 15.2%

Lynx1 Capital Management LP, along with its sole member Weston Nichols, has filed a Schedule 13G/A (Amendment No. 6) disclosing a significant ownership stake in GH Research PLC (ticker: GHRS). As of March 31, 2026, the reporting persons beneficially own 9,456,622 ordinary shares, representing 15.2% of the company's outstanding shares. This filing marks a substantial increase from the previously reported 0.0% ownership position. The shares are held directly by Lynx1 Master Fund LP and a managed account, for which Lynx1 Capital Management LP serves as the investment manager. The filing indicates shared voting and dispositive power over the total reported shares. The reporting persons have certified that these securities were acquired in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer. The ownership percentage is based on 62,029,395 ordinary shares outstanding as reported in the company's most recent annual report.