ARQQ · Insider Trading
Arqit Quantum Inc. Ordinary Shares
Every open-market purchase and sale reported by ARQQ officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-20 | Garth Ritchie | Director | M | +1,021 | — |
| 2026-10-20 | Carlo Calabria | Director | M | +919 | — |
| 2026-10-20 | d'Ovidio Manfredi Lefebvre | Director | M | +817 | — |
| 2026-10-15 | Andrew Leaver | Chief Executive Officer | Sell | −2,573 | −$42.21K |
| 2026-10-13 | Andrew Leaver | Chief Executive Officer | M | +5,209 | — |
| 2026-10-08 | Ben Simon Wilder | Chief Operating Officer | Sell | −218 | −$5.27K |
| 2026-10-08 | Nicholas William Nilan | General Manager-US | Sell | −493 | −$11.93K |
| 2026-10-08 | Andrew Leaver | Chief Executive Officer | Sell | −2,398 | −$58.01K |
| 2026-10-08 | Paul Feenan | Chief Revenue Officer | Sell | −504 | −$12.19K |
| 2026-10-08 | Patrick Willcocks | General Counsel | Sell | −555 | −$13.43K |
| 2026-10-08 | Garth Ritchie | Director | Sell | −118 | −$2.85K |
| 2026-10-07 | Nicholas William Nilan | General Manager-US | MIXED | +437 | −$12.42K |
| 2026-10-07 | Ben Simon Wilder | Chief Operating Officer | MIXED | +210 | −$5.54K |
| 2026-10-07 | Carlo Calabria | Director | M | +248 | — |
| 2026-10-07 | d'Ovidio Manfredi Lefebvre | Director | M | +1,359 | — |
| 2026-10-07 | Patrick Willcocks | General Counsel | MIXED | +560 | −$13.99K |
| 2026-10-07 | Garth Ritchie | Director | MIXED | +121 | −$3.02K |
| 2026-10-07 | Paul Feenan | Chief Revenue Officer | MIXED | +501 | −$12.68K |
| 2026-10-07 | Andrew Leaver | Chief Executive Officer | MIXED | −5,354 | −$129.26K |
| 2026-10-06 | d'Ovidio Manfredi Lefebvre | Director | M | +1,361 | — |
| 2026-10-06 | Paul Feenan | Chief Revenue Officer | MIXED | +528 | −$12.38K |
| 2026-10-06 | Andrew Leaver | Chief Executive Officer | MIXED | +2,390 | −$68.97K |
| 2026-10-06 | Nicholas William Nilan | General Manager-US | MIXED | +466 | −$12.09K |
| 2026-10-06 | Carlo Calabria | Director | M | +250 | — |
| 2026-10-06 | Patrick Willcocks | General Counsel | MIXED | +591 | −$13.63K |
| 2026-10-06 | Ben Simon Wilder | Chief Operating Officer | MIXED | +224 | −$5.41K |
| 2026-10-06 | Garth Ritchie | Director | MIXED | +129 | −$2.96K |
| 2026-10-05 | Andrew Leaver | Chief Executive Officer | M | +5,209 | — |
| 2026-10-05 | Nicholas William Nilan | General Manager-US | M | +960 | — |
| 2026-10-05 | Garth Ritchie | Director | M | +252 | — |
| 2026-10-05 | Ben Simon Wilder | Chief Operating Officer | M | +445 | — |
| 2026-10-05 | Patrick Willcocks | General Counsel | M | +1,151 | — |
| 2026-10-05 | Paul Feenan | Chief Revenue Officer | M | +1,036 | — |
| 2026-10-05 | d'Ovidio Manfredi Lefebvre | Director | M | +1,364 | — |
| 2026-10-05 | Carlo Calabria | Director | M | +252 | — |
| 2026-09-23 | d'Ovidio Manfredi Lefebvre | Director | X | +4,600,000 | +$11.50M |
| 2026-07-21 | Garth Ritchie | Director | M | +841 | — |
| 2026-07-21 | d'Ovidio Manfredi Lefebvre | Director | M | +673 | — |
| 2026-07-21 | Carlo Calabria | Director | M | +757 | — |
| 2026-07-17 | d'Ovidio Manfredi Lefebvre | Director | A | +673 deriv. | — |
| 2026-07-17 | Carlo Calabria | Director | A | +757 deriv. | — |
| 2026-07-17 | Garth Ritchie | Director | A | +841 deriv. | — |
| 2026-07-13 | d'Ovidio Manfredi Lefebvre | Director | Sell | −412 deriv. | — |
| 2026-07-09 | d'Ovidio Manfredi Lefebvre | Director | Sell | −150 deriv. | — |
| 2026-07-07 | d'Ovidio Manfredi Lefebvre | Director | Sell | −133 deriv. | — |
| 2026-07-06 | Andrew Leaver | Chief Executive Officer | MIXED | +5,732 | −$249.33K |
| 2026-07-06 | Carlo Calabria | Director | M | +799 | — |
| 2026-07-06 | Patrick Willcocks | General Counsel | MIXED | +1,546 | −$50.63K |
| 2026-07-06 | Garth Ritchie | Director | MIXED | +360 | −$11.06K |
| 2026-07-06 | d'Ovidio Manfredi Lefebvre | Director | M | +4,133 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| d'Ovidio Manfredi Lefebvre | Director | 8,996,372 | $142.28M |
| Carlo Calabria | Director | 234,147 | $3.70M |
| Garth Ritchie | Director | 106,855 | $1.69M |
| Andrew Leaver | Chief Executive Officer | 53,966 | $853.47K |
| Paul Feenan | Chief Revenue Officer | 20,912 | $330.72K |
| Jennifer Bers | Chief Revenue Officer | 15,000 | $237.22K |
| Patrick Willcocks | General Counsel | 11,209 | $177.27K |
| Ben Simon Wilder | Chief Operating Officer | 4,243 | $67.11K |
| Nicholas William Nilan | General Manager-US | 1,370 | $21.67K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the ARQQ quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.