Arqit Quantum Inc. has filed a prospectus supplement on May 20, 2024, to update and amend information contained in a previous prospectus dated November 22, 2022. The supplement pertains to the offer and sale of up to 117,925,000 ordinary shares and warrants to purchase up to 6,266,667 ordinary shares by selling securityholders. Additionally, it relates to the issuance of up to 14,891,640 ordinary shares upon the exercise of Public and Private Warrants. The updated prospectus supplement includes a revised table of Selling Securityholders, reflecting sales and distributions made under the 'Plan of Distribution' section of the original prospectus. The table provides details on the number of shares and warrants beneficially owned before and after the offering, as well as the number registered for sale. The update is essential for investors considering the high degree of risk involved in investing in the company's securities. The prospectus supplement and the original prospectus, including any amendments or supplements, must be read in conjunction to understand the full context of the offering.

Arqit Quantum Inc. has filed a prospectus supplement on May 20, 2024, to update and amend information contained in a previous prospectus dated November 22, 2022. The supplement pertains to the offer and sale of up to 117,925,000 ordinary shares and warrants to purchase up to 6,266,667 ordinary shares by selling securityholders. Additionally, it relates to the issuance of up to 14,891,640 ordinary shares upon the exercise of Public and Private Warrants. The updated prospectus supplement includes a revised table of Selling Securityholders, reflecting sales and distributions made under the 'Plan of Distribution' section of the original prospectus. The table provides details on the number of shares and warrants beneficially owned before and after the offering, as well as the number registered for sale. The update is essential for investors considering the high degree of risk involved in investing in the company's securities. The prospectus supplement and the original prospectus, including any amendments or supplements, must be read in conjunction to understand the full context of the offering.