Arqit Quantum (ARQQ) Registration Filing summary

Company overview and business model

• Provides encryption analytics and software to protect data and communications from current and quantum cyber threats.

• Solutions serve governments, militaries, network operators, and enterprises, enabling quantum-secure communications.

• Offers a patented, software-based symmetric key agreement encryption solution, validated by independent security experts and compliant with leading agency guidance.

Financial performance and metrics

• As of September 30, 2025, had 15,291,767 ordinary shares outstanding and $25.1 million in net tangible book value ($1.64 per share).

• After a $125 million offering at $26.87 per share, as adjusted net tangible book value would be $146.1 million, or $7.33 per share, with immediate dilution of $18.19 per share to new investors.

Use of proceeds and capital allocation

• Proceeds from securities sales will be used for general corporate purposes, including working capital, capital expenditures, investments, acquisitions, and debt repayment.

• Management has broad discretion in allocating net proceeds.