Garth Ritchie's Sale of Arqit Quantum Inc. Common Stock

Garth Ritchie, a director of Arqit Quantum Inc., has filed a Form 144 to report the sale of 14,473 shares of common stock on October 14, 2025, for a total value of $830,581.80. Additionally, Ritchie plans to sell 100,000 shares of common stock acquired through a public offering on September 30, 2024. The aggregate market value of the securities to be sold is approximately $5,347,000. The transactions are being facilitated by UBS Securities LLC. This filing highlights significant insider trading activity, which could impact investor perception of the company.