Form 4 for ARQQ Arqit Quantum Inc.
Accepted 2026-04-03 19:39:30 ET · period of report 2026-04-01 · accession 0001859690-26-000065 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-04-03 19:39 | 2026-04-01 | ARQQ | Calabria Carlo | Dir | M - OptEx | $0.00 | +1,051 | 109.2K | +1.0% | $0 |
| DM | 2026-04-03 19:39 | 2026-04-01 | ARQQ | Calabria Carlo | Dir | M - OptEx | $0.00 | -1,051 | 2,499 | -30% | $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 | 2026-04-01 | M | A | 50 | $0.00 | 108,223 | D | — | — | (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. |
| 2 | Common | Ordinary Shares | 2026-04-01 | M | A | 250 | $0.00 | 108,473 | D | — | — | (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. |
| 3 | Common | Ordinary Shares | 2026-04-01 | M | A | 250 | $0.00 | 108,723 | D | — | — | (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. |
| 4 | Common | Ordinary Shares | 2026-04-01 | M | A | 501 | $0.00 | 109,224 | D | — | — | (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. |
| 5 | Derivative | Restricted Stock Units | 2026-04-01 | M | D | 50 | $0.00 | 50 | D | — · — to — | 50 Ordinary Shares | (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. (F2) The RSUs vest quarterly in equal installments on April 1, and July 1, 2026. (F2) The RSUs vest quarterly in equal installments on April 1, and July 1, 2026. |
| 6 | Derivative | Restricted Stock Units | 2026-04-01 | M | D | 250 | $0.00 | 1,501 | D | — · — to — | 250 Ordinary Shares | (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. (F3) The RSUs vest quarterly in equal installments on April 1, July 1, and October 1, 2026, and January 1, April 1, July 1, and October 1, 2027. (F3) The RSUs vest quarterly in equal installments on April 1, July 1, and October 1, 2026, and January 1, April 1, July 1, and October 1, 2027. |
| 7 | Derivative | Restricted Stock Units | 2026-04-01 | M | D | 250 | $0.00 | 1,250 | D | — · — to — | 250 Ordinary Shares | (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. (F4) The RSUs vest quarterly in equal installments on April 1, July 1, and October 1, 2026, and January 1, April 1, and July 1, 2027. (F4) The RSUs vest quarterly in equal installments on April 1, July 1, and October 1, 2026, and January 1, April 1, and July 1, 2027. |
| 8 | Derivative | Restricted Stock Units | 2026-04-01 | M | D | 501 | $0.00 | 2,499 | D | — · — to — | 501 Ordinary Shares | (F1) Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. (F5) 501 RSUs vested on April 1, 2026 and the remaining 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. (F5) 501 RSUs vested on April 1, 2026 and the remaining 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. |