Arqit Quantum Inc. filings document foreign private issuer disclosures for a quantum-safe encryption software company listed on Nasdaq under ARQQ and ARQQW. Recent Form 6-K reports furnish preliminary financial results, revenue-recognition context tied to customer contracts, board and audit committee changes, executive-transition matters, and litigation contingency updates.
The filing record also references registration statements on Form S-8 and Form F-3, linking current reports to equity compensation and securities-registration disclosures. These documents frame Arqit’s public-company reporting around governance, capital structure, operating results, litigation contingencies and material events associated with its cybersecurity business.
Garth Ritchie, a director of Arqit Quantum Inc. (ARQQ), reported selling 118 Ordinary Shares on October 6, 2026, at $24.1915 per share in an open-market or private transaction. His reported direct holdings after the sale were 105,834 Ordinary Shares. No Rule 10b5-1 plan is reported.
Arqit Quantum Inc. (ARQQ) General Counsel Patrick Willcocks sold 555 ordinary shares on October 6, 2026, at 24.1915 per share. The sale was reported as direct, and his reported direct holdings afterward were 11,209 ordinary shares. The sale was not reported as made under a Rule 10b5-1 plan. Arqit stated that, because it is a foreign private issuer, the reporting person's transactions in its securities are exempt from Sections 16(b) and 16(c) of the Act.
Arqit Quantum Inc. (ARQQ) Chief Revenue Officer Paul Feenan reported a direct sale of 504 ordinary shares on October 6, 2026, at $24.1915 per share. The transaction is described as a sale in an open-market or private transaction. His reported direct holdings after the sale were 20,912 ordinary shares. No Rule 10b5-1 plan is reported.
Arqit Quantum Inc. (ARQQ) Chief Executive Officer Andrew Leaver sold 2,398 ordinary shares at $24.1915 per share on October 6, 2026. The shares were held directly, and he reported 51,330 ordinary shares following the sale. No Rule 10b5-1 plan is reported. Arqit Quantum stated that, as a foreign private issuer under Rule 3a12-3(b), the reporting person’s transactions are exempt from Sections 16(b) and 16(c) of the Securities Exchange Act of 1934.
Arqit Quantum Inc. reported preliminary, unaudited revenue estimates of approximately $355,000 to $380,000 for the second half ended September 30, 2026, down from $463,000 for the same period in fiscal 2025. For the fiscal year ended September 30, 2026, revenue is expected to be $975,000 to $1,000,000, compared with $530,000 for fiscal 2025. Cash and cash equivalents were approximately $51 million as of September 30, 2026.
Management has not completed financial statement reporting, and the independent accounting firm has not reviewed these data. Closing and review procedures may identify adjustments that could be material. Revenue recognition under existing contracts is subject to successful product delivery and the assumption that customers will not cancel, delay or amend their contract terms. Arqit expects to report complete second-half and full-year results in December 2026.
Arqit Quantum Inc. Chief Executive Officer Andrew Leaver reported transactions on October 5, 2026, including conversion of 5,208 restricted share units into ordinary shares and a sale of 2,535 ordinary shares at $23.7847 per share. Other entries report an acquisition of 5,209 RSUs, a disposition involving 5,208 RSUs, and dispositions of 5,209 and 2,818 ordinary shares. A related footnote says a trade cancelled an October 2 sell-to-cover transaction to correct the tax rate and number of units sold. RSUs convert one-for-one into ordinary shares.
Arqit Quantum Inc. (ARQQ) director Carlo Calabria reported four restricted share unit (RSU) conversions on October 5, 2026: RSU positions of 16, 66, 83 and 83 units were disposed of as corresponding ordinary shares were acquired. The RSUs convert into ordinary shares on a one-for-one basis, and the transactions list 248 ordinary shares acquired.
The awards vest in equal quarterly installments on schedules beginning October 1, 2026; the longest schedule runs through October 1, 2028.
Arqit Quantum Inc. Chief Revenue Officer Paul Feenan reported that 1,034 restricted share units converted into 1,034 ordinary shares on October 5, 2026, on a one-for-one basis. He also sold 533 ordinary shares at $23.7847 per share that day. No Rule 10b5-1 plan is reported.
Arqit Quantum Inc. director d'Ovidio Manfredi Lefebvre reported converting 1,359 restricted share units into 1,359 ordinary shares on October 5, 2026. The RSUs convert one-for-one. Linked notes describe quarterly vesting schedules running from October 1, 2026, through October 1, 2028.
Arqit Quantum Inc. General Manager-US Nicholas William Nilan reported converting 959 restricted share units into 959 ordinary shares on October 5, 2026, and selling 522 ordinary shares at 23.7847 per share that day. No Rule 10b5-1 plan is reported for the sale.
Nilan reported 5,752 RSUs following the conversion. Each RSU represents a contingent right to receive one ordinary share.