Director Carlo Calabria Exercises Share Purchase Warrants for Arqit Quantum Inc.

Director Carlo Calabria exercised 120,000 Ordinary Share Purchase Warrants at a price of $2.50 per share on June 3, 2026. This transaction resulted in acquiring 120,000 ordinary shares. Following the exercise, Mr. Calabria directly owns 230,922 ordinary shares. The filing also notes that due to Arqit Quantum Inc. being a foreign private issuer, the reporting person's transactions are exempt from Sections 16(b) and 16(c) of the Act. The warrants exercised were set to expire on September 30, 2026.