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Who

Garth Ritchie

Director

Company insider

Files Form 4 as: Director, Arqit Quantum.

Every Form 4 they filed

In numbers

Trades disclosed
85
Buys
0
Sells
5
Bought
$0
Sold
$45K
Companies
1
Companies where not an officer
1
First trade
1 Apr 2026
Last trade
16 Oct 2026
Last filed
20 Oct 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
ARQQ Arqit QuantumDirector · Quantum Computing · last 16 Oct 20260 buys · 5 sells

Activity over time

1 Mar – 1 Oct
20Mar 26May 26Jul 26Aug 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
16 Oct 2026filed 20 Oct 2026ARQQ Arqit QuantumQuantum ComputingSEC FORM 4 Code M—1,021 at $0.00filing
16 Oct 2026filed 20 Oct 2026ARQQ Arqit Quantumoption or derivative · Quantum ComputingSEC FORM 4 Code M—1,021 at $0.00filing
15 Oct 2026filed 20 Oct 2026ARQQ Arqit Quantumoption or derivative · Quantum ComputingSEC FORM 4 Code A—1,021 at $0.00filing
6 Oct 2026filed 8 Oct 2026ARQQ Arqit QuantumQuantum ComputingSEC FORM 4 Sold$2,855118 at $24.19filing
5 Oct 2026filed 7 Oct 2026ARQQ Arqit QuantumQuantum ComputingSEC FORM 4 Code M—16 at $0.00filing
5 Oct 2026filed 7 Oct 2026ARQQ Arqit QuantumQuantum ComputingSEC FORM 4 Code M—66 at $0.00filing
5 Oct 2026filed 7 Oct 2026ARQQ Arqit QuantumQuantum ComputingSEC FORM 4 Code M—83 at $0.00filing
5 Oct 2026filed 7 Oct 2026ARQQ Arqit QuantumQuantum ComputingSEC FORM 4 Code M—83 at $0.00filing
5 Oct 2026filed 7 Oct 2026ARQQ Arqit QuantumQuantum ComputingSEC FORM 4 Sold$3,021127 at $23.78filing
5 Oct 2026filed 7 Oct 2026ARQQ Arqit Quantumoption or derivative · Quantum ComputingSEC FORM 4 Code M—16 at $0.00filing
5 Oct 2026filed 7 Oct 2026ARQQ Arqit Quantumoption or derivative · Quantum ComputingSEC FORM 4 Code M—66 at $0.00filing
5 Oct 2026filed 7 Oct 2026ARQQ Arqit Quantumoption or derivative · Quantum ComputingSEC FORM 4 Code M—83 at $0.00filing
5 Oct 2026filed 7 Oct 2026ARQQ Arqit Quantumoption or derivative · Quantum ComputingSEC FORM 4 Code M—83 at $0.00filing
2 Oct 2026filed 6 Oct 2026ARQQ Arqit QuantumQuantum ComputingSEC FORM 4 Code M—17 at $0.00filing
2 Oct 2026filed 6 Oct 2026ARQQ Arqit Quantumoption or derivative · Quantum ComputingSEC FORM 4 Code M—67filing
2 Oct 2026filed 6 Oct 2026ARQQ Arqit Quantumoption or derivative · Quantum ComputingSEC FORM 4 Code M—83filing
2 Oct 2026filed 6 Oct 2026ARQQ Arqit Quantumoption or derivative · Quantum ComputingSEC FORM 4 Code M—83filing
2 Oct 2026filed 6 Oct 2026ARQQ Arqit QuantumQuantum ComputingSEC FORM 4 Code M—67 at $0.00filing
2 Oct 2026filed 6 Oct 2026ARQQ Arqit QuantumQuantum ComputingSEC FORM 4 Code M—83 at $0.00filing
2 Oct 2026filed 6 Oct 2026ARQQ Arqit QuantumQuantum ComputingSEC FORM 4 Code M—83 at $0.00filing

Sectors

Technology5

Buys in green, sells in red, by the company’s sector.

Related people

d'Ovidio Manfredi LefebvreDirector · Director at Arqit Quantum, filing Form 4 there in the last year
Carlo CalabriaDirector · Director at Arqit Quantum, filing Form 4 there in the last year
Andrew LeaverChief Executive Officer · Chief Executive Officer at Arqit Quantum, filing Form 4 there in the last year
Ben Simon WilderChief Operating Officer · Chief Operating Officer at Arqit Quantum, filing Form 4 there in the last year
Patrick WillcocksGeneral Counsel · General Counsel at Arqit Quantum, filing Form 4 there in the last year
Nicholas William NilanGeneral Manager-US · Also traded ARQQ in the last 90 days
Paul FeenanChief Revenue Officer · Also traded ARQQ in the last 90 days