GH Research director reports option holdings

GH Research PLC director Dermot John Hanley filed an initial ownership report listing his existing equity position in the company.

Rhea-AI Filing Summary

GH Research PLC director Dermot John Hanley filed an initial ownership report listing his existing equity position in the company. The filing shows direct ownership of 2,432 Ordinary Shares as of March 18, 2026.

Hanley also holds several tranches of Share Options (Right to Buy) over Ordinary Shares with an exercise price of 0.0250 per share and expirations ranging from September 26, 2030 to September 3, 2032. These options cover 6,633, 5,508, 5,532, 50,000 and 4,667 underlying Ordinary Shares, respectively. Footnotes indicate the options are fully vested or vesting over time and may be exercised within specified multi‑year windows under the GH Research PLC Share Option Plan.

Insider Trade Summary

6 transactions reported

Mixed 6 txns

Insider Hanley Dermot John

Role Director

Type	Security	Shares	Price	Value
holding	Share Options (Right to Buy)	--	--	--
holding	Share Options (Right to Buy)	--	--	--
holding	Share Options (Right to Buy)	--	--	--
holding	Share Options (Right to Buy)	--	--	--
holding	Share Options (Right to Buy)	--	--	--
holding	Ordinary Shares	--	--	--

Holdings After Transaction: Share Options (Right to Buy) — 72,340 contracts (Direct); Ordinary Shares — 2,432 shares (Direct)

Footnotes (5)

1. F1. The share options are fully vested and exercisable.
2. F2. 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. F3. 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. F4. 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. F5. 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.

Key Figures

Ordinary Shares held: 2,432 shares Option exercise price: 0.0250 per share Options expiring 2030-09-26: 6,633 underlying shares +4 more

7 metrics

Ordinary Shares held 2,432 shares Direct ownership as of March 18, 2026

Option exercise price 0.0250 per share Share Options (Right to Buy) over Ordinary Shares

Options expiring 2030-09-26 6,633 underlying shares Share Options (Right to Buy), direct ownership

Options expiring 2031-06-22 5,508 underlying shares Share Options (Right to Buy), direct ownership

Options expiring 2031-07-06 5,532 underlying shares Share Options (Right to Buy), direct ownership

Options expiring 2031-12-09 50,000 underlying shares Share Options (Right to Buy), vesting over time

Options expiring 2032-09-03 4,667 underlying shares Share Options (Right to Buy), fully vested per plan rules

Key Terms

Share Options (Right to Buy), Ordinary Shares, exercise price, fully vested, +1 more

5 terms

Share Options (Right to Buy) financial

"security_title: "Share Options (Right to Buy)""

Ordinary Shares financial

"underlying_security_title: "Ordinary Shares""

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

exercise price financial

"conversion_or_exercise_price: "0.0250""

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

fully vested financial

"The share options are fully vested and exercisable."

Share Option Plan financial

"subject to the rules of the GH Research PLC Share Option Plan"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does Dermot John Hanley report owning in GHRS on this Form 3?

Dermot John Hanley reports direct ownership of 2,432 Ordinary Shares of GH Research PLC, plus multiple tranches of share options over additional Ordinary Shares, all summarized as of March 18, 2026 in this initial ownership statement.

How many GHRS share options does Dermot John Hanley hold and at what exercise price?

The filing lists several Share Options (Right to Buy), each with an exercise price of 0.0250 per share. These options relate to tranches of 6,633, 5,508, 5,532, 50,000 and 4,667 underlying Ordinary Shares, all held directly.

When do Dermot John Hanley’s GHRS share options expire?

The reported share options over GH Research PLC Ordinary Shares have expiration dates between September 26, 2030 and September 3, 2032. Each tranche carries its own expiration date, providing different long-term windows in which the options can potentially be exercised.

Are Dermot John Hanley’s GHRS share options vested and exercisable?

Footnotes state the share options are fully vested or vesting over time and may be exercised within specified windows. Some may be exercised between the second and seventh anniversaries of June 22, 2024, July 6, 2024, or September 3, 2025, subject to the Share Option Plan rules.

What is the significance of this GHRS Form 3 filing by Dermot John Hanley?

This Form 3 serves as an initial statement of beneficial ownership for director Dermot John Hanley. It outlines his existing Ordinary Share holdings and detailed option grants but does not itself describe new open-market purchases or sales of GH Research PLC stock.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/02/2026 - 05:39 PM Learn about SEC filing dates

SEC 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

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Hanley Dermot John

(Last) (First) (Middle)

C/O GH RESEARCH PLC, JOSHUA DAWSON HOUSE

DAWSON STREET

(Street)

DUBLIN 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	2,432	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)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
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/ Dermot Hanley	04/01/2026
	** 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)