InsidersTradesSigma
Arqit Quantum Inc. Stock: price and management transactions · United States · SEC (Form 4)
Follow the Arqit Quantum Inc. stock price and the full insider trade history of the company, a publicly traded company based in United States. Shares trade on US US, under the authority of SEC (Form 4). Market capitalisation: €348.9m. The latest transaction was reported on 6 July 2026 (Levée d'options). Among the most active insiders: Ritchie Garth. Every trade is free.
73
Insider Decl.
n/a
Thresholds
n/a
n/a
Buy Volume
€491,610
15 ops.
Sell Volume
54Σ signal
Informational score on this market. Our backtest validates the signal only on 8 EU venues; elsewhere (notably US markets) insider buys historically invert or do not hold. Not a recommendation.
Sigma AI Analysis
Fundamental view, insider signal, bull and bear case, synthesis.
AI-generated analysis. Opinion, not investment advice. Not backtested. Built from public filings and financials. No price target, no buy or sell recommendation.
Last declaration on 6 July 2026
Declarations73 total
1,666 shares0Ordinary SharesSEC:0001859690-26-000128:0
119 shares0Ordinary SharesSEC:0001859690-26-000128:1
472 shares0Ordinary SharesSEC:0001859690-26-000128:2
965 shares0Ordinary SharesSEC:0001859690-26-000128:3
1,834 shares@ US$25.20260.011% mcap100.0% of flowOrdinary SharesSEC:0001859690-26-000128:4
833 shares0Ordinary SharesSEC:0001859690-26-000131:0
500 shares0Ordinary SharesSEC:0001859690-26-000131:1
769 shares@ US$25.20260.0047% mcap100.0% of flowOrdinary SharesSEC:0001859690-26-000131:2
15,625 shares0Ordinary SharesSEC:0001859690-26-000133:0
9,893 shares@ US$25.20260.061% mcap71.1% of flowOrdinary SharesSEC:0001859690-26-000133:1
50 shares0Ordinary SharesSEC:0001859690-26-000135:0
250 shares0Ordinary SharesSEC:0001859690-26-000135:1
250 shares0Ordinary SharesSEC:0001859690-26-000135:2
249 shares0Ordinary SharesSEC:0001859690-26-000135:3
439 shares@ US$25.20260.0027% mcap5.8% of flowOrdinary SharesSEC:0001859690-26-000135:4
2,082 shares0Ordinary SharesSEC:0001859690-26-000137:0
110 shares0Ordinary SharesSEC:0001859690-26-000137:1
448 shares0Ordinary SharesSEC:0001859690-26-000137:2
915 shares0Ordinary SharesSEC:0001859690-26-000137:3
2,009 shares@ US$25.20260.012% mcap100.0% of flowOrdinary SharesSEC:0001859690-26-000137:4
50 shares0Ordinary SharesSEC:0001859690-26-000139:0
250 shares0Ordinary SharesSEC:0001859690-26-000139:1
250 shares0Ordinary SharesSEC:0001859690-26-000139:2
249 shares0Ordinary SharesSEC:0001859690-26-000139:3
3,584 shares0Ordinary SharesSEC:0001859690-26-000142:0
25 of 73 declarations
About Arqit Quantum Inc.
Arqit Quantum Inc. is a company specializing in quantum cybersecurity, providing solutions to secure communications. It is listed on the NASDAQ under the ticker ARQQ.