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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of May, 2026.

Commission File Number: 001-40530

GH Research PLC

(Exact name of registrant as specified in its charter)

Joshua Dawson House

Dawson Street

Dublin 2

D02 RY95

Ireland

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:

Form 20-F

☒

Form 40-F

☐

INFORMATION CONTAINED IN THIS REPORT ON FORM 6-K

On May 14, 2026, GH Research PLC (the “Company”) reported its first quarter 2026 financial results, provided business updates, and made available an updated investor presentation on its website. A copy of the press release is exhibited hereto as Exhibit 99.3 and a copy of the investor presentation is attached hereto as Exhibit 99.4.

The fact that this press release and the investor presentation is being made available and furnished herewith should not be deemed an admission as to the materiality of any information contained in the materials. The information contained in the press release and investor presentation is being provided as of May 14, 2026, and the Company does not undertake any obligation to update the press release or the presentation in the future or to update forward-looking statements to reflect subsequent actual results.

INCORPORATION BY REFERENCE

This Report on Form 6-K, (other than Exhibit 99.3 and Exhibit 99.4 hereto), including Exhibit 99.1 and Exhibit 99.2 hereto, shall be deemed to be incorporated by reference into the registration statement on Form S-8 (Registration Nos. 333-270422, 333-285311 and 333-294036) and the registration statement on Form F-3 (Registration No. 333-285310) of the Company and to be a part thereof from the date on which this report is filed, to the extent not superseded by documents or reports subsequently filed or furnished.

EXHIBIT INDEX

Exhibit No.	Description
99.1	Unaudited Condensed Consolidated Interim Financial Statements for the three months ended March 31, 2026
99.2	Management’s Discussion and Analysis of Financial Condition and Results of Operations
99.3	Press release dated May 14, 2026
99.4	Corporate Presentation for May 2026
101.INS	Inline XBRL Instance Document
101.SCH	Inline XBRL Taxonomy Extension Schema Document
101.CAL	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE	Inline XBRL Taxonomy Extension Presentation Linkbase Document
104	Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	GH Research PLC
Date: May 14, 2026

	By:	/s/ Julie Ryan
	Name:	Julie Ryan
	Title:	Vice President, Finance

GH Research PLC 6-K