SEC Form 4 · accession 0001859690-26-000133
Arqit Quantum Inc. · ARQQ
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Andrew Leaver
Officer — Chief Executive Officer
Period of report
Jul 1, 2026
Accepted (ET)
Jul 6, 2026 · 5:13 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001859690
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Ordinary SharesF1 | Jul 1, 2026 | M | 15,625 | $0.00 | A | 61,376 | D | |
| Ordinary Shares | Jul 2, 2026 | S | 9,893 | $25.2026 | D | 51,483 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Stock UnitsF1,F2 | — | Jul 1, 2026 | M | 15,625 | D | — | — | Ordinary Shares | 15,625 | 203,125 | D |
Explanation of responses
- F1The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.
- F2The RSUs vest quarterly in equal installments on July 1, and October 1, 2026, and January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028, and January 1, April 1, July 1, and October 1, 2029.
Remarks
Due to the issuer's status as a foreign private issuer pursuant to Rule 3a12-3(b) under the Securities Exchange Act of 1934 (the "Act"), the reporting person's transactions in the issuer's securities are exempt from Sections 16(b) and 16(c) of the Act. Ex.24 - Power of Attorney