Garth Ritchie

CIK: 0001840684

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)8 (22.9%)

Position reduction

Option Exercises (M)24 (68.6%)

Derivative conversions

Awards (A)3 (8.6%)

Compensation grants

Other (G, F, J, C, D, …)0 (0.0%)

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

Companies & Roles (1)

ARQQ

Arqit Quantum Inc.

Director

Discretionary Trading P&L

Holdings

Transaction History (35 total)

ARQQ
Arqit Quantum Inc.
Oct 16, 2026
Exercise(M)
Direct
1K shares-
ARQQ
Arqit Quantum Inc.
Oct 15, 2026
Award(A)
Restricted Share Units
Direct
1K shares-
ARQQ
Arqit Quantum Inc.
Oct 6, 2026
Sale(S)
Direct
118 shares at avg. $24.19$3K
ARQQ
Arqit Quantum Inc.
Oct 5, 2026
Sale(S)
Direct
127 shares at avg. $23.78$3K
ARQQ
Arqit Quantum Inc.
Oct 5, 2026
Exercise(M)
Direct
16 shares-
ARQQ
Arqit Quantum Inc.
Oct 5, 2026
Exercise(M)
Direct
66 shares-
ARQQ
Arqit Quantum Inc.
Oct 5, 2026
Exercise(M)
Direct
83 shares-
ARQQ
Arqit Quantum Inc.
Oct 5, 2026
Exercise(M)
Direct
83 shares-
ARQQ
Arqit Quantum Inc.
Oct 2, 2026
Sale(S)
Direct
32 shares at avg. $24.47$783.178
ARQQ
Arqit Quantum Inc.
Oct 2, 2026
Sale(S)
Direct
9 shares at avg. $24.47$220.269
ARQQ
Arqit Quantum Inc.
Oct 2, 2026
Sale(S)
Direct
40 shares at avg. $24.47$978.972
ARQQ
Arqit Quantum Inc.
Oct 2, 2026
Sale(S)
Direct
40 shares at avg. $24.47$978.972
ARQQ
Arqit Quantum Inc.
Oct 2, 2026
Exercise(M)
Direct
17 shares-
ARQQ
Arqit Quantum Inc.
Oct 2, 2026
Exercise(M)
Direct
67 shares-
ARQQ
Arqit Quantum Inc.
Oct 2, 2026
Exercise(M)
Direct
83 shares-
ARQQ
Arqit Quantum Inc.
Oct 2, 2026
Exercise(M)
Direct
83 shares-
ARQQ
Arqit Quantum Inc.
Oct 1, 2026
Exercise(M)
Direct
17 shares-
ARQQ
Arqit Quantum Inc.
Oct 1, 2026
Exercise(M)
Direct
67 shares-
ARQQ
Arqit Quantum Inc.
Oct 1, 2026
Exercise(M)
Direct
84 shares-
ARQQ
Arqit Quantum Inc.
Oct 1, 2026
Exercise(M)
Direct
84 shares-
ARQQ
Arqit Quantum Inc.
Jul 17, 2026
Exercise(M)
Direct
841 shares-
ARQQ
Arqit Quantum Inc.
Jul 15, 2026
Award(A)
Restricted Share Units
Direct
841 shares-
ARQQ
Arqit Quantum Inc.
Jul 2, 2026
Sale(S)
Direct
439 shares at avg. $25.20$11K
ARQQ
Arqit Quantum Inc.
Jul 1, 2026
Exercise(M)
Direct
250 shares-
ARQQ
Arqit Quantum Inc.
Jul 1, 2026
Exercise(M)
Direct
250 shares-

		Type	Shares	Price		Ownership
Oct 16, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	1,021	-	$0	Direct
Oct 15, 2026	ARQQ Arqit Quantum Inc.	Award(A) Restricted Share Units	1,021	-	-	Direct
Oct 6, 2026	ARQQ Arqit Quantum Inc.	Sale(S)	118	$24.19	$2,855	Direct
Oct 5, 2026	ARQQ Arqit Quantum Inc.	Sale(S)	127	$23.78	$3,021	Direct
Oct 5, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	16	-	$0	Direct
Oct 5, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	66	-	$0	Direct
Oct 5, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	83	-	$0	Direct
Oct 5, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	83	-	$0	Direct
Oct 2, 2026	ARQQ Arqit Quantum Inc.	Sale(S)	32	$24.47	$783	Direct
Oct 2, 2026	ARQQ Arqit Quantum Inc.	Sale(S)	9	$24.47	$220	Direct
Oct 2, 2026	ARQQ Arqit Quantum Inc.	Sale(S)	40	$24.47	$979	Direct
Oct 2, 2026	ARQQ Arqit Quantum Inc.	Sale(S)	40	$24.47	$979	Direct
Oct 2, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	17	-	$0	Direct
Oct 2, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	67	-	$0	Direct
Oct 2, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	83	-	$0	Direct
Oct 2, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	83	-	$0	Direct
Oct 1, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	17	-	$0	Direct
Oct 1, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	67	-	$0	Direct
Oct 1, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	84	-	$0	Direct
Oct 1, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	84	-	$0	Direct
Jul 17, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	841	-	$0	Direct
Jul 15, 2026	ARQQ Arqit Quantum Inc.	Award(A) Restricted Share Units	841	-	-	Direct
Jul 2, 2026	ARQQ Arqit Quantum Inc.	Sale(S)	439	$25.20	$11,064	Direct
Jul 1, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	250	-	$0	Direct
Jul 1, 2026	ARQQ Arqit Quantum Inc.	Exercise(M)	250	-	$0	Direct

1-25 of 35 transactions

About Ritchie Garth

Ritchie Garth (SEC CIK 0001840684) files insider reports with the SEC as Director of Arqit Quantum Inc. (ARQQ).

Signal8 holds 12 ownership filings by Ritchie Garth (1 Form 3, 11 Form 4), filed between Mar 18, 2026 and Oct 20, 2026. Those filings report 35 transactions, from Apr 1, 2026 to Oct 16, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Ritchie Garth's filings is in LONDON.

Recent filings by Ritchie Garth

Oct 16, 2026: Option exercise of ARQQ shares (Form 4, code M).
Oct 15, 2026: Grant or award of ARQQ derivative securities (Form 4, code A).
Oct 6, 2026: Open-market sale of ARQQ shares (Form 4, code S).
Oct 5, 2026: Open-market sale of ARQQ shares (Form 4, code S).
Oct 5, 2026: Option exercises of ARQQ shares (4 lines, Form 4, code M).

Other insiders filing for Arqit Quantum Inc. (ARQQ)

Lefebvre d'Ovidio Manfredi, Director
Calabria Carlo, Director
Leaver Andrew, Chief Executive Officer
Wilder Ben Simon, Chief Operating Officer
Nilan Nicholas William, General Manager-US
Willcocks Patrick, General Counsel

How to read Form 4 transaction codes