Welcome to our dedicated page for Arqit Quantum SEC filings (Ticker: ARQQW), 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 cybersecurity company focused on quantum-safe encryption. Form 6-K reports furnish preliminary financial results, revenue-recognition updates tied to customer contracts, product-delivery assumptions and cash-position disclosures.
The company’s SEC record also includes annual general meeting proxy materials, shareholder voting results, board and finance-leadership changes, and references to registration statements on Form S-8 and Form F-3. These filings cover governance, capital-market registration matters, ordinary-share voting mechanics and public-company reporting for Arqit’s Nasdaq-listed securities, including ARQQW warrants.
Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi, through Heritage Assets SCSp, reported small open-market sales of Business Combination Warrants. Heritage Assets SCSp sold 62 warrants at $1.50 each and 52 warrants at $1.40 each, for a total of 114 warrants.
According to the disclosure, the reporting person beneficially owns 521,451 Business Combination Warrants, which on a post-reverse split basis are equivalent to 20,858.04 ordinary shares. Each warrant has an exercise price of $11.50 and, after the 25-for-1 reverse stock split, 25 warrants are required to receive one whole ordinary share at an aggregate exercise price of $287.50 per share.
Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi, through Heritage Assets SCSp, reported small open-market sales of Business Combination Warrants. Heritage Assets SCSp sold 62 warrants at $1.50 each and 52 warrants at $1.40 each, for a total of 114 warrants.
According to the disclosure, the reporting person beneficially owns 521,451 Business Combination Warrants, which on a post-reverse split basis are equivalent to 20,858.04 ordinary shares. Each warrant has an exercise price of $11.50 and, after the 25-for-1 reverse stock split, 25 warrants are required to receive one whole ordinary share at an aggregate exercise price of $287.50 per share.
Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi, through Heritage Assets SCSp, reported open‑market sales of Business Combination Warrants. Heritage Assets SCSp sold 156 warrants on June 5, 2026 at $1.40 per warrant and 18 warrants on June 8, 2026 at $1.50 per warrant, totaling 174 warrants.
Each warrant entitles the holder to buy 0.04 Arqit ordinary shares at an exercise price of $11.50 per share and expires on September 3, 2026. The reporting person beneficially owns 524,283 such warrants, equivalent to 20,971.32 ordinary shares on a post‑reverse‑split basis.
Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi, through Heritage Assets SCSp, reported open‑market sales of Business Combination Warrants. Heritage Assets SCSp sold 156 warrants on June 5, 2026 at $1.40 per warrant and 18 warrants on June 8, 2026 at $1.50 per warrant, totaling 174 warrants.
Each warrant entitles the holder to buy 0.04 Arqit ordinary shares at an exercise price of $11.50 per share and expires on September 3, 2026. The reporting person beneficially owns 524,283 such warrants, equivalent to 20,971.32 ordinary shares on a post‑reverse‑split basis.
Arqit Quantum Inc. director Carlo Calabria exercised derivative securities to increase his direct equity stake. He exercised Ordinary Share Purchase Warrants covering 120,000 Arqit Quantum ordinary shares at an exercise price of $2.50 per share, converting them into Ordinary Shares.
After this warrant exercise, Calabria directly holds 230,922 Ordinary Shares. The related warrant position reported in this filing was fully exercised, with zero warrants remaining outstanding from this specific grant.
Arqit Quantum Inc. director Carlo Calabria exercised derivative securities to increase his direct equity stake. He exercised Ordinary Share Purchase Warrants covering 120,000 Arqit Quantum ordinary shares at an exercise price of $2.50 per share, converting them into Ordinary Shares.
After this warrant exercise, Calabria directly holds 230,922 Ordinary Shares. The related warrant position reported in this filing was fully exercised, with zero warrants remaining outstanding from this specific grant.
Arqit Quantum Inc. director Ritchie Garth exercised Ordinary Share Purchase Warrants to acquire additional equity in the company. He exercised warrants covering 73,562 Ordinary Shares at an exercise price of $2.50 per share, converting a derivative position into common equity.
Following the exercise, Garth directly holds 104,249 Ordinary Shares of Arqit Quantum Inc. The warrants exercised relate to Ordinary Share Purchase Warrants that now show zero remaining derivative balance in this filing, indicating a full exercise of that specific warrant block with no same-day share sales reported.
Arqit Quantum Inc. director Ritchie Garth exercised Ordinary Share Purchase Warrants to acquire additional equity in the company. He exercised warrants covering 73,562 Ordinary Shares at an exercise price of $2.50 per share, converting a derivative position into common equity.
Following the exercise, Garth directly holds 104,249 Ordinary Shares of Arqit Quantum Inc. The warrants exercised relate to Ordinary Share Purchase Warrants that now show zero remaining derivative balance in this filing, indicating a full exercise of that specific warrant block with no same-day share sales reported.
Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi, through Heritage Assets SCSp, reported open‑market sales of Business Combination Warrants. The entity sold 124 warrants on June 4, 2026 and 116 warrants on June 3, 2026, both at $1.50 per warrant.
According to the footnote, the reporting person beneficially owns 528,634 Business Combination Warrants, each with an exercise price of $11.50 and exercisable into 0.04 ordinary share, equivalent to 21,145.36 ordinary shares on a post‑reverse‑split basis.
Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi, through Heritage Assets SCSp, reported open‑market sales of Business Combination Warrants. The entity sold 124 warrants on June 4, 2026 and 116 warrants on June 3, 2026, both at $1.50 per warrant.
According to the footnote, the reporting person beneficially owns 528,634 Business Combination Warrants, each with an exercise price of $11.50 and exercisable into 0.04 ordinary share, equivalent to 21,145.36 ordinary shares on a post‑reverse‑split basis.
Arqit Quantum Inc. filed an initial Form 3 for Chief Financial Officer Russell Robert Michael. This filing establishes him as a reporting insider of the company and, based on the data provided, does not report any buy, sell, or other equity transactions at this time.
Arqit Quantum Inc. filed an initial Form 3 for Chief Financial Officer Russell Robert Michael. This filing establishes him as a reporting insider of the company and, based on the data provided, does not report any buy, sell, or other equity transactions at this time.
Arqit Quantum Inc. director Cristina Levis filed an initial Form 3, which is a statement of beneficial ownership for insiders. This filing does not show any stock purchases, sales, option exercises, or other transactions, and it does not list any specific share holdings.
Arqit Quantum Inc. director Cristina Levis filed an initial Form 3, which is a statement of beneficial ownership for insiders. This filing does not show any stock purchases, sales, option exercises, or other transactions, and it does not list any specific share holdings.
Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi, through Heritage Assets SCSp, reported small open-market sales of Business Combination Warrants. The entity sold 132 warrants on June 2, 2026 and 106 warrants on June 1, 2026, both at $1.60 per warrant. The footnote states the reporting person beneficially owns 534,634 such warrants in total, which, if fully exercised at an exercise price of $11.50 each for 0.04 of an ordinary share per warrant, would equal 21,385.36 ordinary shares on a post–reverse stock split basis. The warrants relate to Arqit’s 25‑for‑1 reverse stock split and are exercisable until September 3, 2026.
Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi, through Heritage Assets SCSp, reported small open-market sales of Business Combination Warrants. The entity sold 132 warrants on June 2, 2026 and 106 warrants on June 1, 2026, both at $1.60 per warrant. The footnote states the reporting person beneficially owns 534,634 such warrants in total, which, if fully exercised at an exercise price of $11.50 each for 0.04 of an ordinary share per warrant, would equal 21,385.36 ordinary shares on a post–reverse stock split basis. The warrants relate to Arqit’s 25‑for‑1 reverse stock split and are exercisable until September 3, 2026.
Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi, through Heritage Assets SCSp, reported small open-market sales of Business Combination Warrants linked to Arqit ordinary shares. On May 28, 2026, Heritage Assets SCSp sold 150 warrants at $1.80 each, and on May 29, 2026 it sold 227 warrants at $1.70 each.
The warrants each have an exercise price of $11.50 and, after Arqit’s 1-for-25 reverse stock split announced on September 19, 2024, every warrant represents the right to purchase 0.04 of an ordinary share, with at least 25 warrants needed for one whole share. The reporting person beneficially owns 540,588 Business Combination Warrants, which if fully exercised would equal 21,623.52 ordinary shares, so the 377 warrants sold represent a small portion of this position.
Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi, through Heritage Assets SCSp, reported small open-market sales of Business Combination Warrants linked to Arqit ordinary shares. On May 28, 2026, Heritage Assets SCSp sold 150 warrants at $1.80 each, and on May 29, 2026 it sold 227 warrants at $1.70 each.
The warrants each have an exercise price of $11.50 and, after Arqit’s 1-for-25 reverse stock split announced on September 19, 2024, every warrant represents the right to purchase 0.04 of an ordinary share, with at least 25 warrants needed for one whole share. The reporting person beneficially owns 540,588 Business Combination Warrants, which if fully exercised would equal 21,623.52 ordinary shares, so the 377 warrants sold represent a small portion of this position.
Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi reported open-market sales of Business Combination Warrants that are beneficially owned through Heritage Assets SCSp. On May 26 and 27, 2026, entities associated with the director sold a total of 303 Business Combination Warrants at $1.80 per warrant.
The reporting person continues to beneficially own 550,013 Business Combination Warrants, which are equivalent to 22,000.52 Arqit Quantum ordinary shares on a post-reverse stock split basis. Each warrant has an exercise price of $11.50 and entitles the holder to purchase 0.04 of an ordinary share, requiring 25 warrants to receive one whole share.
Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi reported open-market sales of Business Combination Warrants that are beneficially owned through Heritage Assets SCSp. On May 26 and 27, 2026, entities associated with the director sold a total of 303 Business Combination Warrants at $1.80 per warrant.
The reporting person continues to beneficially own 550,013 Business Combination Warrants, which are equivalent to 22,000.52 Arqit Quantum ordinary shares on a post-reverse stock split basis. Each warrant has an exercise price of $11.50 and entitles the holder to purchase 0.04 of an ordinary share, requiring 25 warrants to receive one whole share.