Key facts
- ARQQ - Arqit Quantum Inc. has 1 insider with reported activity on this page.
- No net insider buy/sell flow is currently reported for the last year.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions of Arqit Quantum Inc.
- Symbol
- ARQQ, ARQQW on Nasdaq
- Location
- London, United Kingdom
Change
- No meaningful buy/sell imbalance is currently visible in the one-year window.
- Activity will update as new Forms 3/4/5 are filed.
Research use
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsInsider buy and sell flow is broadly balanced over the last 12 months. No Buy or Sell transactions have been reported since 08 Jul 2025.
Buys
$0
Shares: 0
Insiders: 0
Sells
$0
Shares: 0
Insiders: 0
Net
$0
Shares: 0
Insiders: 0
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 0 | $0 | $0 | $0 |
| 3-6 | 0 | 0 | $0 | $0 | $0 |
| 6-9 | 0 | 0 | $0 | $0 | $0 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Arqit Quantum Inc. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| d'Ovidio Manfredi Lefebvre | Director | Mixed | 30 Apr 2026 |
Top shareholders of Arqit Quantum Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| d'Ovidio Manfredi Lefebvre |
3/4/5
|
Director |
—
class O/S missing
|
25,741
|
— | — | 30 Apr 2026 |
Recent Insider Transactions by Companies or Individuals for Arqit Quantum Inc.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| d'Ovidio Manfredi Lefebvre | ARQQ | Business Combination Warrants (right to buy) | Sale | -1.54% | -402 | 25,741 | 01 May 2026 | Beneficially owned through Heritage Assets SCSp | ||
| d'Ovidio Manfredi Lefebvre | ARQQ | Business Combination Warrants (right to buy) | Sale | -0.35% | -91 | 26,143 | 30 Apr 2026 | Beneficially owned through Heritage Assets SCSp |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.