Welcome to our dedicated page for Arqit Quantum SEC filings (Ticker: ARQQ), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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.
Heritage Assets SCSp, M Management S.A. and Manfredi Lefebvre d'Ovidio filed Amendment No. 9 to update their beneficial ownership in Arqit Quantum Inc. after dilution from new Ordinary Shares issued by Arqit. They report beneficial ownership of about 9,249,963.80 Ordinary Shares, or 38.4% of the class on a post–reverse stock split basis, while Manfredi Lefebvre d'Ovidio is deemed to beneficially own 9,298,313.80 shares, or 38.6%. Percentages are based on 24,090,585 Ordinary Shares outstanding as of May 19, 2026. The amendment also details open‑market sales of Arqit Business Combination Warrants at various prices between November 2025 and May 2026.
Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi reported indirect open-market sales of Business Combination Warrants beneficially owned through Heritage Assets SCSp. On May 21 and May 22, the entity sold a total of 1,788 warrants at prices of $2.10 and $1.90 per warrant.
After these transactions, the reporting person continues to beneficially own 557,584 Business Combination Warrants, which the footnote states are equivalent to 22,303.36 ordinary shares on a post-reverse stock split basis. Each warrant has an exercise price of $11.50 and can be exercised until September 3, 2026.
Arqit Quantum Inc. director-linked entity sells a small number of warrants. An entity associated with director Lefebvre d'Ovidio Manfredi, Heritage Assets SCSp, sold a total of 188 Business Combination Warrants in open-market transactions, including 116 warrants at $1.60 and 72 warrants at $1.90 per warrant.
The reporting person beneficially owns 602,306 Business Combination Warrants, which, if fully exercised at an exercise price of $11.50 per warrant, would be equivalent to 24,092.24 Arqit ordinary shares on a post-reverse split basis. Each warrant entitles the holder to purchase 0.04 of an ordinary share, and holders must exercise 25 warrants to receive one whole share.
Arqit Quantum Inc. files a prospectus supplement updating a resale registration covering 4,717,000 Ordinary Shares and 6,266,667 warrants, and noting 595,666 Ordinary Shares issuable upon exercise of registered warrants.
The supplement updates the selling securityholders table to reflect permitted sales and distributions and states the share counts reflect a 25-to-1 reverse share split effected on September 25, 2024. The table bases percentages on 24,090,585 ordinary shares outstanding as of May 19, 2026.
Arqit Quantum Inc. reported first-half fiscal 2026 results showing rapid revenue growth but significantly higher losses as it scales its quantum-safe cybersecurity business. Revenue rose to $623k from $67k, helped by more customer contracts and services recognized over time, plus $187k of grant income.
Administrative expenses increased to $33.9m from $20.2m, driven mainly by higher headcount and share-based compensation, leading to a net loss of $33.0m versus $19.4m a year earlier. Cash used in operations was $25.7m for the period.
Arqit ended March 31, 2026 with $28.9m in cash and cash equivalents and total assets of $36.2m, supported by equity funding. It issued 846,911 shares under its at-the-market equity program, raising about $18m before costs, and continues to invest in its Encryption Intelligence and NetworkSecure™ offerings amid growing post-quantum security demand.
Arqit Quantum Inc. Chief Financial Officer Nicholas Pointon reported multiple share transactions involving company ordinary shares. On April 20, 2026, he executed an open-market sale of 435 ordinary shares at $15.87 per share.
On the same date, he also exercised 3,066 Employee Share Options at an exercise price of $0.0025 per share, receiving an equal number of ordinary shares. The options for these 3,066 shares were fully exercised, leaving no remaining options from this specific grant.
Arqit Quantum Inc. director-linked entity sells Business Combination Warrants. An entity associated with director Lefebvre d'Ovidio Manfredi, Heritage Assets SCSp, made two open-market sales of Arqit Business Combination Warrants. It sold 110 warrants at $2.0000 per warrant on May 15, 2026 and 106 warrants at $2.0000 per warrant on May 18, 2026, totaling 216 warrants.
Each warrant has an exercise price of $11.50 and can be exercised to purchase 0.04 Arqit ordinary shares after a 25-for-1 reverse stock split. After these sales, the reporting person beneficially owns 607,006 warrants, equivalent to 24,280.24 Arqit ordinary shares on a post-reverse-split basis, so the sales represent a small portion of the overall warrant position.
Arqit Quantum Inc. director-related entity sells small block of warrants
An entity associated with director Lefebvre d'Ovidio Manfredi, Heritage Assets SCSp, sold a total of 127 Business Combination Warrants in open-market transactions at $2.10 per warrant on May 13 and May 14, 2026. These derivative securities each have an exercise price of $11.50 and, after Arqit’s reverse stock split, entitle the holder to purchase 0.04 ordinary share, requiring 25 warrants for one whole share at an aggregate exercise price of $287.50 per share. Following these sales, the reporting person continues to beneficially own 612,413 Business Combination Warrants, equivalent to 24,496.52 ordinary shares if fully exercised.
Arqit Quantum Inc. insider-linked entity reported a small open-market sale of Business Combination Warrants. On 2026-05-12, Heritage Assets SCSp, associated with director Lefebvre d'Ovidio Manfredi, sold 13 Business Combination Warrants at $1.80 each. These warrants are exercisable at $11.50 per warrant to purchase 0.04 of an Arqit ordinary share and expire on 2026-09-03. After this transaction, the reporting person beneficially owns 615,597 Business Combination Warrants, equivalent to 24,623.88 Arqit ordinary shares on a post-reverse stock split basis.
Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi reported small open-market sales of Business Combination Warrants indirectly held through Heritage Assets SCSp. On two dates, a total of 293 warrants were sold at $2.10 per warrant, reducing the position slightly.
After these transactions, the reporting person beneficially owns 615,911 Business Combination Warrants, equivalent to 24,636.44 ordinary shares on a post-reverse-split basis. Each warrant has an exercise price of $11.50 and, following a 25-for-1 reverse stock split, represents the right to purchase 0.04 of an ordinary share, requiring 25 warrants for one whole share.