Form 4 for ARQQ Arqit Quantum Inc.
Accepted 2026-05-08 17:11:01 ET · period of report 2026-05-06 · accession 0001859690-26-000079 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-05-08 17:11 | 2026-05-06 | ARQQ | Calabria Carlo | Dir | M - OptEx | $0.00 | +1,698 | 110.9K | +2% | $0 |
| D | 2026-05-08 17:11 | 2026-05-06 | ARQQ | Calabria Carlo | Dir | A - Grant | $0.00 | +1,698 | 1,698 | New | $0 |
| D | 2026-05-08 17:11 | 2026-05-06 | ARQQ | Calabria Carlo | Dir | M - OptEx | $0.00 | -1,698 | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Ordinary Shares | 2026-05-06 | M | A | 1,698 | $0.00 | 110,922 | D | — | — | (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested immediately on the date of grant. |
| 2 | Derivative | Restricted Stock Units | 2026-05-06 | A | A | 1,698 | $0.00 | 1,698 | D | — · — to — | 1,698 Ordinary Shares | (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested immediately on the date of grant. (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested immediately on the date of grant. (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested immediately on the date of grant. |
| 3 | Derivative | Restricted Stock Units | 2026-05-06 | M | D | 1,698 | $0.00 | 0 | D | — · — to — | 1,698 Ordinary Shares | (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested immediately on the date of grant. (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested immediately on the date of grant. (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vested immediately on the date of grant. |