Form 4 Filing by Ritchie Garth for Arqit Quantum Inc.

This Form 4 filing details transactions by Ritchie Garth, a director at Arqit Quantum Inc. (ARQQ), on June 5, 2026. Garth exercised 73,562 Ordinary Share Purchase Warrants at a price of $2.50 per share, acquiring an equivalent number of ordinary shares. Following this exercise, Garth holds 104,249 ordinary shares directly. The filing also notes that due to Arqit Quantum Inc. being a foreign private issuer, these transactions are exempt from Section 16(b) and 16(c) of the Act. The warrants were set to expire on September 30, 2026.