SEC Form 4
Arqit Quantum Inc. (ARQQ) insider trading
In the 12 months to Oct 26, 2026, 9 ARQQ insiders reported open-market sales of $2.9M across 34 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $2.9M
- 34 filings · 9 insiders
- Open-market purchases
- $0
- 0 filings
Who traded ARQQ, and when
- Sale
ARQQ daily close from Oct 27, 2025 to Oct 26, 2026, between $11.78 and $47.04, last $16.64. 34 sale and 0 purchase filings by 9 insiders, marked at their filing dates. d'Ovidio Manfredi Lefebvre, Director: sold $1.6M across 1 filing, first filed Jul 2, 2026, last Jul 2, 2026. Andrew Leaver, Chief Executive Officer: sold $581.4K across 6 filings, first filed Apr 7, 2026, last Oct 15, 2026. Patrick Willcocks, General Counsel: sold $233.4K across 6 filings, first filed Apr 3, 2026, last Oct 8, 2026. Jennifer Bers, Chief Revenue Officer: sold $177.5K across 1 filing, first filed Jun 24, 2026, last Jun 24, 2026. Paul Feenan, Chief Revenue Officer: sold $105.2K across 5 filings, first filed Apr 3, 2026, last Oct 8, 2026. Ben Simon Wilder, Chief Operating Officer: sold $44.7K across 5 filings, first filed Apr 3, 2026, last Oct 8, 2026. 3 others: sold $92.8K across 10 filings, first filed Apr 3, 2026, last Oct 8, 2026.
Largest mark · tap a row for others
d'Ovidio Manfredi Lefebvre · Director
Sale $1,642,643
54,444 shares
Filed Jul 2, 2026 · traded Jun 30
Close on filing date $23.52
d'Ovidio Manfredi Lefebvre · Director
Director
$1.6M soldAndrew Leaver · Chief Executive Officer
Chief Executive Officer
$581.4K soldPatrick Willcocks · General Counsel
General Counsel
$233.4K soldJennifer Bers · Chief Revenue Officer
Chief Revenue Officer
$177.5K soldPaul Feenan · Chief Revenue Officer
Chief Revenue Officer
$105.2K soldBen Simon Wilder · Chief Operating Officer
Chief Operating Officer
$44.7K sold3 others
Combined, one mark per week
$92.8K soldOpen-market trades
34 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| d'Ovidio Manfredi Lefebvre | Director | $1.6M | — | 1 | — | |
| Andrew Leaver | Chief Executive Officer | $581.4K | — | 6 | — | |
| Patrick Willcocks | General Counsel | $233.4K | — | 6 | — | |
| Jennifer Bers | Chief Revenue Officer | $177.5K | — | 1 | — | |
| Paul Feenan | Chief Revenue Officer | $105.2K | — | 5 | — | |
| Ben Simon Wilder | Chief Operating Officer | $44.7K | — | 5 | — | |
| Nicholas William Nilan | General Manager-US | $36.4K | — | 3 | — | |
| Nicholas Pointon | Chief Financial Officer | $29.7K | — | 2 | — | |
| Garth Ritchie | Director | $26.7K | — | 5 | — |
| Filed | Insider | Type | Shares | Value | Held after | Source |
|---|---|---|---|---|---|---|
traded | Andrew Leaver Chief Executive Officer | Sale | 2,573 ordinary shares | $42.2K | 53,966 | |
traded | Andrew Leaver Chief Executive Officer | Sale | 2,398 ordinary shares | $58.0K | 51,330 | |
traded | Paul Feenan Chief Revenue Officer | Sale | 504 ordinary shares | $12.2K | 20,912 | |
traded | Patrick Willcocks General Counsel | Sale | 555 ordinary shares | $13.4K | 11,209 | |
traded | Garth Ritchie Director | Sale | 118 ordinary shares | $2.9K | 105,834 | |
traded | Nicholas William Nilan General Manager-US | Sale | 493 ordinary shares | $11.9K | 1,370 | |
traded | Ben Simon Wilder Chief Operating Officer | Sale | 218 ordinary shares | $5.3K | 4,243 | |
traded | Patrick Willcocks General Counsel | Sale | 588 ordinary shares | $14.0K | 11,764 | |
traded | Ben Simon Wilder Chief Operating Officer | Sale | 233 ordinary shares | $5.5K | 4,461 | |
traded | Garth Ritchie Director | Sale | 127 ordinary shares | $3.0K | 105,952 | |
traded | Nicholas William Nilan General Manager-US | Sale | 522 ordinary shares | $12.4K | 904 | |
traded | Paul Feenan Chief Revenue Officer | Sale | 533 ordinary shares | $12.7K | 21,416 | |
traded | Andrew Leaver Chief Executive Officer | Sale | 2,535 ordinary shares | $60.3K | 56,547 | |
traded | Paul Feenan Chief Revenue Officer | Sale | 506 ordinary shares | $12.4K | 21,347 | |
traded | Andrew Leaver Chief Executive Officer | Sale | 2,818 ordinary shares | $69.0K | 59,082 | |
traded | Nicholas William Nilan General Manager-US | Sale | 494 ordinary shares | $12.1K | 466 | |
traded | Garth Ritchie Director | Sale | 121 ordinary shares | $3.0K | 105,911 | |
traded | Ben Simon Wilder Chief Operating Officer | Sale | 221 ordinary shares | $5.4K | 4,251 | |
traded | Patrick Willcocks General Counsel | Sale | 557 ordinary shares | $13.6K | 11,525 | |
traded | Paul Feenan Chief Revenue Officer | Sale | 1,834 ordinary shares | $46.2K | 19,351 | |
traded | Ben Simon Wilder Chief Operating Officer | Sale | 769 ordinary shares | $19.4K | 3,582 | |
traded | Andrew Leaver Chief Executive Officer | Sale | 9,893 ordinary shares | $249.3K | 51,483 | |
traded | Garth Ritchie Director | Sale | 439 ordinary shares | $11.1K | 104,609 | |
traded | Patrick Willcocks General Counsel | Sale | 2,009 ordinary shares | $50.6K | 9,462 | |
traded | d'Ovidio Manfredi Lefebvre Director | Sale | 54,444 ordinary shares | $1.6M | 4,342,448 | |
traded | Patrick Willcocks General Counsel | Sale | 4,000 ordinary shares | $117.9K | 7,916 | |
traded | Jennifer Bers Chief Revenue Officer | Sale | 8,288 ordinary shares | $177.5K | 6,712 | |
traded | Nicholas Pointon Chief Financial Officer | Sale | 435 ordinary shares | $6.9K | 16,238 | |
traded | Andrew Leaver Chief Executive Officer | Sale | 7,595 ordinary shares | $102.6K | 45,751 | |
traded | Patrick Willcocks General Counsel | Sale | 1,790 ordinary shares | $23.8K | 11,916 | |
traded | Ben Simon Wilder Chief Operating Officer | Sale | 683 ordinary shares | $9.1K | 3,018 | |
traded | Garth Ritchie Director | Sale | 512 ordinary shares | $6.8K | 28,800 | |
traded | Nicholas Pointon Chief Financial Officer | Sale | 1,709 ordinary shares | $22.8K | 13,607 | |
traded | Paul Feenan Chief Revenue Officer | Sale | 1,632 ordinary shares | $21.7K | 17,963 |
Shares are as filed (ordinary shares or ADS); values are as converted to US$ in the filing.
GET /stocks/filings/vX/form-4?tickers=ARQQ&filing_date.gte=2025-10-26&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"ARQQ"
],
"issuer_cik": "0001859690",
"owner_cik": "0002035890",
"accession_number": "0001859690-26-000193",
"form_type": "4",
"filing_date": "2026-10-15",
"period_of_report": "2026-10-13",
"issuer_name": "Arqit Quantum Inc.",
"issuer_trading_symbol": "ARQQ",
"owner_name": "Leaver Andrew",
"is_officer": true,
"officer_title": "Chief Executive Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Ordinary Shares",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-10-13",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2573,
"transaction_price_per_share": 16.404,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 53966,
"transaction_value": 42207.492,
"direct_or_indirect": "D",
"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."
},
{
"tickers": [
"ARQQ"
],
"issuer_cik": "0001859690",
"owner_cik": "0002101275",
"accession_number": "0001859690-26-000191",
"form_type": "4",
"filing_date": "2026-10-08",
"period_of_report": "2026-10-06",
"issuer_name": "Arqit Quantum Inc.",
"issuer_trading_symbol": "ARQQ",
"owner_name": "Wilder Ben Simon",
"is_officer": true,
"officer_title": "Chief Operating Officer",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "Ordinary Shares",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-10-06",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 218,
"transaction_price_per_share": 24.1915,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 4243.47,
"transaction_value": 5273.747,
"direct_or_indirect": "D",
"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."
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 137 records
- Option exercises134 records
- Other3 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Frequently asked questions
Has Arqit Quantum Inc.'s CEO sold stock?
Yes. Andrew Leaver (CEO) sold 27,812 shares ($581.4K) between Apr 2026 and Oct 2026.
How current is ARQQ’s insider data?
These are ARQQ Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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