Form 4 Filing for Arqit Quantum Inc. by Patrick Willcocks

On October 5, 2026, Patrick Willcocks, General Counsel of Arqit Quantum Inc., reported several transactions involving the company's ordinary shares and Restricted Share Units (RSUs). Willcocks acquired 694, 149, and 305 ordinary shares through the conversion of RSUs, with a reported price of $0.00 per share. These conversions are exempt from Section 16(b) of the Act due to the issuer's status as a foreign private issuer. Additionally, Willcocks disposed of 588 ordinary shares at a price of $23.7847 per share. Following these transactions, his post-transaction share ownership stands at 11,764 ordinary shares. The RSUs vest quarterly, with specific vesting dates mentioned in the footnotes, indicating a structured release of shares over time. The filing, designated as Form 4, details these changes in beneficial ownership.