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.
Insider sale notice for ARQQ: The Form 144 shows a proposed sale of 811 common shares of Arqit Quantum Inc. (to be executed through Fidelity Brokerage Services) with an aggregate market value of $34,963.02 and an approximate sale date of 10/02/2025. Those 811 shares were acquired by the filer on 10/01/2025 through restricted stock vesting as compensation and payment was recorded on the same date. The filing also discloses prior small sales by the same person in the past three months: 238 shares sold for $8,151.83 on 07/02/2025 and 3 shares sold for $84.99 on 09/03/2025. The filer certifies they are not aware of any undisclosed material adverse information about the issuer.
Form 144 notice for Arqit Quantum Inc. (ARQQ): An upcoming sale of 749 common shares is proposed to be executed through Fidelity Brokerage Services on 10/02/2025 with an aggregate market value of $32,290.14. The filing shows these 749 shares were acquired on 10/01/2025 on vesting of restricted stock and were received as compensation. The issuer reports 11,545,354 shares outstanding.
The filing also discloses prior sales by the same person, Andrew J. Leaver: 2,468 shares sold on 07/07/2025 for $81,567.89 and 25,000 shares sold on 07/18/2025 for $1,080,075.17. The notice includes the required declaration that the seller is not aware of undisclosed material adverse information.
Arqit Quantum Inc. (ARQQ) filing a Form 144 notifies a proposed sale of 1,091 common shares valued at $47,034.10 to be sold through Fidelity Brokerage Services on the NASDAQ with an approximate sale date of 10/02/2025. The shares were acquired on 10/01/2025 by restricted stock vesting and were paid as compensation. The filing also discloses a prior sale by the same person of 956 shares on 07/07/2025 for $31,595.99. The signer certifies no undisclosed material information.
The filing is a Form 144 notice for Arqit Quantum Inc. (ARQQ) reporting a proposed sale of 1,336 common shares through Fidelity Brokerage Services LLC on 10/02/2025. The filing states an aggregate market value of $57,596.30 and shows 11,545,354 shares outstanding. The shares were acquired on 10/01/2025 via restricted stock vesting with payment characterized as compensation. The form also discloses three sales by Patrick Willcocks during July 2025 totaling 5,373 shares for gross proceeds of $249,857.77. The filer attests they are not aware of undisclosed material adverse information about the issuer.
Arqit Quantum Inc. insider filings show a proposed resale of 1,327 common shares on 10/02/2025 through Fidelity Brokerage Services (NASDAQ), with an aggregate market value of $57,208.30. The shares were acquired on 10/01/2025 by restricted stock vesting from the issuer and were paid as compensation. The filing lists 11,545,354 shares outstanding for the class. The same filer previously sold 333 shares on 07/07/2025 for $11,005.72. The filer certifies they do not possess undisclosed material adverse information about the issuer.
Heritage Assets SCSp, M Management S.A. and Manfredi Lefebvre d'Ovidio filed Amendment No. 6 to their Schedule 13D for Arqit Quantum Inc. (Ordinary Shares, CUSIP G0567U127) to update ownership after dilution and to disclose open-market sales of Business Combination Warrants. The Reporting Persons now beneficially own 10,214,252 Ordinary Shares, representing approximately 46.0% of 22,184,708 outstanding Ordinary Shares (post-Reverse Stock Split basis). The amendment lists multiple warrant sales between August 20 and September 15, 2025, with quantities and average prices disclosed. No other transactions or material changes were reported.
Heritage Assets SCSp, M Management S.A. and Manfredi Lefebvre d'Ovidio filed Amendment No. 6 to their Schedule 13D for Arqit Quantum Inc. (Ordinary Shares, CUSIP G0567U127) to update ownership after dilution and to disclose open-market sales of Business Combination Warrants. The Reporting Persons now beneficially own 10,214,252 Ordinary Shares, representing approximately 46.0% of 22,184,708 outstanding Ordinary Shares (post-Reverse Stock Split basis). The amendment lists multiple warrant sales between August 20 and September 15, 2025, with quantities and average prices disclosed. No other transactions or material changes were reported.
Heritage Assets SCSp, M Management S.A. and Manfredi Lefebvre d'Ovidio filed Amendment No. 6 to their Schedule 13D for Arqit Quantum Inc. (Ordinary Shares, CUSIP G0567U127) to update ownership after dilution and to disclose open-market sales of Business Combination Warrants. The Reporting Persons now beneficially own 10,214,252 Ordinary Shares, representing approximately 46.0% of 22,184,708 outstanding Ordinary Shares (post-Reverse Stock Split basis). The amendment lists multiple warrant sales between August 20 and September 15, 2025, with quantities and average prices disclosed. No other transactions or material changes were reported.
Heritage Assets SCSp, M Management S.A. and Manfredi Lefebvre d'Ovidio filed Amendment No. 6 to their Schedule 13D for Arqit Quantum Inc. (Ordinary Shares, CUSIP G0567U127) to update ownership after dilution and to disclose open-market sales of Business Combination Warrants. The Reporting Persons now beneficially own 10,214,252 Ordinary Shares, representing approximately 46.0% of 22,184,708 outstanding Ordinary Shares (post-Reverse Stock Split basis). The amendment lists multiple warrant sales between August 20 and September 15, 2025, with quantities and average prices disclosed. No other transactions or material changes were reported.
Arqit Quantum Inc. is issuing 48,561 ordinary shares to Deutsche Bank AG, London Branch in partial payment for advisory services valued at $1,500,000. The shares represent newly issued ordinary shares rather than a cash raise, so the company will not receive proceeds but will reduce accounts payable. After issuance the company expects to have 15,292,167 ordinary shares outstanding based on 15,243,606 shares outstanding as of September 12, 2025. The shares are listed on Nasdaq under the symbol ARQQ and delivery is expected on or about September 16, 2025. The prospectus supplement highlights risk factors related to potential share price decline from the issuance and references incorporated filings for further detail.