Arqit Quantum Inc. Stock: price and insider trades · United States

Arqit Quantum Inc. is a listed company. Its directors and officers file their transactions with SEC (Form 4). The last twelve months, up to 18 October 2026, brought 180 filings signed by 17 insiders.

The flow runs one way only: 24 sales worth €219k, from 8 insiders, and no purchase. The totals do not cover 4 filings with an undisclosed amount. Leaver Andrew filed the largest sale, €89k, on 7 April 2026.

Filings reach the SEC (Form 4) feed a median of 4 days after the trade. Section 16 rules allow two business days to file each Form 4. Keep in mind that insiders sell for many reasons unrelated to the outlook, from tax bills to estate planning.

With 180 filings in twelve months, the company is more active than the median of 19 filings across the 5,810 companies we follow on the same exchange. Our records for Arqit Quantum Inc. go back to 2026, with no purchases and 25 sales on the open market in total.

For comparison within the same market, see the insider buying recorded at GameStop Corp. and Heico Corp. Every figure here comes from the filings published by SEC (Form 4) and describes the past, not future prices; it is not investment advice.