Arqit Quantum Director Manfredi Sells Business Combination Warrants

This Form 4 filing reports that Lefebvre d'Ovidio Manfredi, a director of Arqit Quantum Inc. (ARQQ), sold Business Combination Warrants on May 21-22, 2026. On May 21, he sold 787 warrants at $2.10 per warrant, reducing his position to 23,304.80 equivalent ordinary shares. On May 22, he sold an additional 1,001 warrants at $1.90 per warrant, further reducing his position to 22,303.36 equivalent ordinary shares. The warrants have an exercise price of $11.50 and can be exercised to purchase 0.04 of an ARQQ ordinary share each, with a requirement to exercise at least 25 warrants to receive one whole ordinary share. The filing notes that as a foreign private issuer, the transactions are exempt from Sections 16(b) and 16(c) of the Securities Exchange Act. Manfredi beneficially owns these securities through Heritage Assets SCSp.