Duncan Moore

CIK: 0001888265

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)2 (25.0%)

Position reduction

Option Exercises (M)0 (0.0%)

Derivative conversions

Awards (A)6 (75.0%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (2)

GHRS

GH Research PLC

Director

ASPI

ASP Isotopes Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (8 total)

GHRS
GH Research PLC
Aug 11, 2026
Award(A)
Share Options (Right to Buy)
Direct
2.2K shares-
ASPI
ASP Isotopes Inc.
Apr 16, 2026
Sale(S)
Direct
11.6K shares at avg. $5.21$61K
ASPI
ASP Isotopes Inc.
Dec 18, 2025
Award(A)
Direct
36.5K shares-
ASPI
ASP Isotopes Inc.
Nov 12, 2025
Award(A)
Direct
25.5K shares-
ASPI
ASP Isotopes Inc.
Aug 29, 2025
Sale(S)
Direct
75K shares at avg. $9.28$696K
ASPI
ASP Isotopes Inc.
Dec 9, 2024
Award(A)
Direct
77.6K shares-
ASPI
ASP Isotopes Inc.
Dec 9, 2024
Award(A)
Direct
95.2K shares-
ASPI
ASP Isotopes Inc.
Nov 20, 2024
Award(A)
Direct
42.5K shares-

		Type	Shares	Price		Ownership
Aug 11, 2026	GHRS GH Research PLC	Award(A) Share Options (Right to Buy)	2,202	-	-	Direct
Apr 16, 2026	ASPI ASP Isotopes Inc.	Sale(S)	11,642	$5.21	$60,597	Direct
Dec 18, 2025	ASPI ASP Isotopes Inc.	Award(A)	36,548	-	$0	Direct
Nov 12, 2025	ASPI ASP Isotopes Inc.	Award(A)	25,469	-	$0	Direct
Aug 29, 2025	ASPI ASP Isotopes Inc.	Sale(S)	75,000	$9.28	$696,233	Direct
Dec 9, 2024	ASPI ASP Isotopes Inc.	Award(A)	77,626	-	$0	Direct
Dec 9, 2024	ASPI ASP Isotopes Inc.	Award(A)	95,238	-	$0	Direct
Nov 20, 2024	ASPI ASP Isotopes Inc.	Award(A)	42,522	-	$0	Direct

1-8 of 8 transactions

About Moore Duncan

Moore Duncan (SEC CIK 0001888265) files insider reports with the SEC as Director of GH Research PLC (GHRS) and Director of ASP Isotopes Inc. (ASPI).

Signal8 holds 6 ownership filings by Moore Duncan (1 Form 3, 5 Form 4), filed between Nov 21, 2024 and Aug 13, 2026. Those filings report 8 transactions, from Nov 20, 2024 to Aug 11, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Moore Duncan's filings is in DUBLIN.

Recent filings by Moore Duncan

Aug 11, 2026: Grant or award of GHRS derivative securities (Form 4, code A).
Apr 16, 2026: Open-market sale of ASPI shares (Form 4, code S).
Dec 18, 2025: Grant or award of ASPI shares (Form 4, code A).
Nov 12, 2025: Grant or award of ASPI shares (Form 4, code A).
Aug 29, 2025: Open-market sale of ASPI shares (Form 4, code S).

Other insiders filing for GH Research PLC (GHRS)

Schonharting Florian, Director
Hanley Dermot John, Director
Forer Michael, Director
Cameron Aaron Luke, Chief Operating Officer
Halle Magnus Clemensen, Managing Director, Ireland
Valcheva Velichka, Chief Executive Officer

How to read Form 4 transaction codes