Arqit Quantum General Counsel Patrick Willcocks' Stock Transactions - April 2026

This Form 4 filing reports securities transactions by Patrick Willcocks, General Counsel of Arqit Quantum Inc. (ARQQ), during April 1-2, 2026. The filing shows the vesting and conversion of multiple Restricted Stock Unit (RSU) grants on April 1, 2026, resulting in the acquisition of 3,563 ordinary shares at $0 per share through the conversion of RSUs. The RSUs had various vesting schedules extending through October 2028. On April 2, 2026, Willcocks sold 1,790 ordinary shares at $13.3233 per share, reducing his direct holdings to 11,916 shares. The filing notes that as a foreign private issuer, Arqit Quantum's transactions are exempt from Sections 16(b) and 16(c) of the Exchange Act. The transactions represent routine equity compensation activity rather than discretionary trading decisions.