SEC FORM 3

SEC FORM 3SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Moore Duncan

(Last)

(First)

(Middle)

C/O GH RESEARCH PLC

JOSHUA DAWSON HOUSE, DAWSON STREET

(Street)

DUBLIN

IRELAND

D02 RY95

(City)

(State)

(Zip)

IRELAND

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
GH Research PLC [ GHRS ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Ordinary Shares	14,600	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
Share Options (Right to Buy)	⁽¹⁾	09/26/2030	Ordinary Shares	6,633	$0.025	D
Share Options (Right to Buy)	⁽²⁾	06/22/2031	Ordinary Shares	5,508	$0.025	D
Share Options (Right to Buy)	⁽³⁾	07/06/2031	Ordinary Shares	5,532	$0.025	D
Share Options (Right to Buy)	⁽⁴⁾	12/09/2031	Ordinary Shares	50,000	$0.025	D
Share Options (Right to Buy)	⁽⁵⁾	09/03/2032	Ordinary Shares	4,667	$0.025	D

Explanation of Responses:

1. The share options are fully vested and exercisable.

2. 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.

3. 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.

4. 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.

5. 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/ Duncan Moore	04/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

SEC Form 3 filed by new insider Moore Duncan