Arqit Quantum Inc: director Calabria Carlo exercised 919 shares

What happened

• Calabria Carlo, a director, was granted 919 restricted stock units (RSUs) on Oct 15, 2026 (grant code A, derivative) and on Oct 16, 2026 the RSUs converted/exercised into 919 ordinary shares (code M, acquired) and the 919 shares were disposed the same day (code M, disposed). All transactions list a price of $0 and total value $0.

Key details

• Transaction dates and prices: Oct 15, 2026 — grant of 919 RSUs at $0; Oct 16, 2026 — conversion/exercise acquiring 919 shares at $0; Oct 16, 2026 — disposition of 919 shares at $0.
• Shares owned after the transaction: not stated in the filing.
• Footnotes: F1 notes the RSUs convert into ARQQ ordinary shares on a one-for-one basis and the RSUs vested within the week of the grant date.
• Other filing notes: issuer is a foreign private issuer and the filing states transactions are exempt from Sections 16(b) and 16(c) of the Securities Exchange Act; Exhibit 24 (power of attorney) is referenced.
• Filing date and period: Form filed Oct 20, 2026; period of report Oct 15, 2026.

Why it may matter

• The filing shows RSUs were converted/exercised and the resulting shares were disposed on the same day (Oct 16, 2026), i.e., same-day disposition following conversion.
• This filing does not show why the insider traded or why the company acted.