Arqit Quantum Inc: director Ritchie Garth exercised 1,021 shares

What happened Ritchie Garth, a director, was granted 1,021 restricted stock units on Oct 15, 2026, which vested within the week (grant code A). The RSUs converted into 1,021 ordinary shares on Oct 16, 2026 (exercise/conversion code M) at $0.00, and 1,021 shares were disposed on Oct 16, 2026 (code M) at $0.00, for a total reported value of $0.

Key details

• Transactions:
  • Oct 15, 2026 — Grant (A): 1,021 RSUs @ $0.00 (acquired; derivative).
  • Oct 16, 2026 — Exercise/conversion (M): 1,021 shares @ $0.00 (acquired; derivative).
  • Oct 16, 2026 — Exercise/conversion (M): 1,021 shares @ $0.00 (disposed; derivative).
• Shares owned after the transaction: not reported in the filing.
• Footnotes: F1 states RSUs convert one-for-one into ARQQ ordinary shares and vested within the week of the grant date.
• Filing and timing: Form filed Oct 20, 2026; period of report Oct 15, 2026. The filing notes the issuer is a foreign private issuer and that these transactions are exempt from Sections 16(b) and 16(c) of the Exchange Act.

Why it may matter The RSUs were converted and the resulting shares were disposed on the same day, according to the filing. A filing does not show why the insider traded or why the company acted.