Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Arqit Quantum Inc.ARQQ · Entity 5853 | Chief Executive Officer | October 12, 2026 | October 13, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Arqit Quantum Inc.
Report date October 12, 2026 · Filed October 13, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Ordinary SharesSEC Table I · non-derivative | Direct | 56,539 |
Reported balance
After 2026-10-12 transaction · row 1
1 source rowRow 1 · 2026-10-12 · Exercise / conversion · Acquired 5,209 · Balance 56,539 F1: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. |
| Restricted Share UnitsSEC Table II · derivative / convertible security | Direct | 187,500 |
Reported balance
After 2026-10-12 transaction · row 2
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 2 · 2026-10-12 · Exercise / conversion · Disposed 5,209 · Balance 187,500 F2: The RSUs vest quarterly in equal installments on 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, and January 1, April 1, July 1, and October 1, 2029. |
Filing footnotes · ownership attribution and instrument terms
F1: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.
F2: The RSUs vest quarterly in equal installments on 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, and January 1, April 1, July 1, and October 1, 2029.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| October 12, 2026 Filed Oct 13, 2026 21:48 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | Exercise / conversionRestricted Share Units · Derivative | 5,209 | $0.00 | $0.00 |
DisclosureSEC source: 0001859690-26-000192 · form4.xml · derivative · entry 2 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 187,500 Underlying: Ordinary Shares · 5,209 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: The RSUs vest quarterly in equal installments on 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, and January 1, April 1, July 1, and October 1, 2029. F2 · derivative.exercise_date: The RSUs vest quarterly in equal installments on 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, and January 1, April 1, July 1, and October 1, 2029. F2 · derivative.expiration_date: The RSUs vest quarterly in equal installments on 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, and January 1, April 1, July 1, and October 1, 2029. Read SEC document |
| October 12, 2026 Filed Oct 13, 2026 21:48 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | Exercise / conversionOrdinary Shares | 5,209 | $0.00 | $0.00 |
DisclosureSEC source: 0001859690-26-000192 · form4.xml · nonDerivative · entry 1 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 56,539 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. Read SEC document |
| October 06, 2026 Filed Oct 8, 2026 22:15 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | SaleOrdinary Shares | 2,398 | $24.19 | $58,011.22 |
DisclosureSEC source: 0001859690-26-000186 · form4.xml · nonDerivative · entry 1 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 51,330 Read SEC document |
| October 05, 2026 Filed Oct 7, 2026 23:52 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | Exercise / conversionRestricted Share Units · Derivative | 5,208 | $0.00 | $0.00 |
DisclosureSEC source: 0001859690-26-000185 · form4.xml · derivative · entry 6 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 192,709 Underlying: Ordinary Shares · 5,208 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F4 · derivative.exercise_price: The RSUs vest quarterly in equal installments on 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, and January 1, April 1, July 1, and October 1, 2029. F4 · derivative.exercise_date: The RSUs vest quarterly in equal installments on 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, and January 1, April 1, July 1, and October 1, 2029. F4 · derivative.expiration_date: The RSUs vest quarterly in equal installments on 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, and January 1, April 1, July 1, and October 1, 2029. Read SEC document |
| October 05, 2026 Filed Oct 7, 2026 23:52 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | OtherRestricted Share Units · Derivative | 5,209 | $0.00 | $0.00 |
DisclosureSEC source: 0001859690-26-000185 · form4.xml · derivative · entry 5 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 197,917 Underlying: Ordinary Shares · 5,209 shares Expires not disclosed F4 · derivative.exercise_price: The RSUs vest quarterly in equal installments on 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, and January 1, April 1, July 1, and October 1, 2029. F1 · kind: This trade cancelled out the transaction from October 2, 2026 to correct the applicable tax rate and number of units required to be sold in a sell-to-cover transaction. F2 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. F4 · derivative.exercise_date: The RSUs vest quarterly in equal installments on 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, and January 1, April 1, July 1, and October 1, 2029. F4 · derivative.expiration_date: The RSUs vest quarterly in equal installments on 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, and January 1, April 1, July 1, and October 1, 2029. Read SEC document |
| October 05, 2026 Filed Oct 7, 2026 23:52 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | OtherOrdinary Shares | 2,818 | $24.47 | $68,968.58 |
DisclosureSEC source: 0001859690-26-000185 · form4.xml · nonDerivative · entry 4 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 53,728 F1 · kind: This trade cancelled out the transaction from October 2, 2026 to correct the applicable tax rate and number of units required to be sold in a sell-to-cover transaction. F3 · price: The price for acquiring these ordinary shares is the same price that the units were sold for on October 2. Read SEC document |
| October 05, 2026 Filed Oct 7, 2026 23:52 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | Exercise / conversionOrdinary Shares | 5,208 | $0.00 | $0.00 |
DisclosureSEC source: 0001859690-26-000185 · form4.xml · nonDerivative · entry 3 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 56,546 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. Read SEC document |
| October 05, 2026 Filed Oct 7, 2026 23:52 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | OtherOrdinary Shares | 5,209 | $0.00 | $0.00 |
DisclosureSEC source: 0001859690-26-000185 · form4.xml · nonDerivative · entry 2 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 51,338 F1 · kind: This trade cancelled out the transaction from October 2, 2026 to correct the applicable tax rate and number of units required to be sold in a sell-to-cover transaction. F2 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. Read SEC document |
| October 05, 2026 Filed Oct 7, 2026 23:52 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | SaleOrdinary Shares | 2,535 | $23.78 | $60,294.21 |
DisclosureSEC source: 0001859690-26-000185 · form4.xml · nonDerivative · entry 1 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 56,547 Read SEC document |
| October 02, 2026 Filed Oct 6, 2026 23:42 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | Exercise / conversionRestricted Share Units · Derivative | 5,208 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001859690-26-000173 · form4.xml · derivative · entry 3 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 192,708 Underlying: Ordinary Shares · 5,208 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: The RSUs vest quarterly in equal installments on 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, and January 1, April 1, July 1, and October 1, 2029. F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. F2 · derivative.exercise_date: The RSUs vest quarterly in equal installments on 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, and January 1, April 1, July 1, and October 1, 2029. F2 · derivative.expiration_date: The RSUs vest quarterly in equal installments on 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, and January 1, April 1, July 1, and October 1, 2029. Read SEC document |
| October 02, 2026 Filed Oct 6, 2026 23:42 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | SaleOrdinary Shares | 2,818 | $24.47 | $68,968.58 |
DisclosureSEC source: 0001859690-26-000173 · form4.xml · nonDerivative · entry 2 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 59,082 Read SEC document |
| October 02, 2026 Filed Oct 6, 2026 23:42 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | Exercise / conversionOrdinary Shares | 5,208 | $0.00 | $0.00 |
DisclosureSEC source: 0001859690-26-000173 · form4.xml · nonDerivative · entry 1 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 61,900 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. Read SEC document |
| October 01, 2026 Filed Oct 6, 2026 00:27 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | Exercise / conversionRestricted Share Units · Derivative | 5,209 | Not disclosed | Not disclosed |
DisclosureSEC source: 0001859690-26-000167 · form4.xml · derivative · entry 2 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 197,916 Underlying: Ordinary Shares · 5,209 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F2 · derivative.exercise_price: The 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, and January 1, April 1, July 1, and October 1, 2029. F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. F2 · derivative.exercise_date: The 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, and January 1, April 1, July 1, and October 1, 2029. F2 · derivative.expiration_date: The 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, and January 1, April 1, July 1, and October 1, 2029. Read SEC document |
| October 01, 2026 Filed Oct 6, 2026 00:27 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | Exercise / conversionOrdinary Shares | 5,209 | $0.00 | $0.00 |
DisclosureSEC source: 0001859690-26-000167 · form4.xml · nonDerivative · entry 1 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 56,692 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. Read SEC document |
| July 02, 2026 Filed Jul 6, 2026 21:13 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | SaleOrdinary Shares | 9,893 | $25.20 | $249,329.32 |
DisclosureSEC source: 0001859690-26-000133 · form4.xml · nonDerivative · entry 2 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 51,483 Read SEC document |
| July 01, 2026 Filed Jul 6, 2026 21:13 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | Exercise / conversionRestricted Stock Units · Derivative | 15,625 | $0.00 | $0.00 |
DisclosureSEC source: 0001859690-26-000133 · form4.xml · derivative · entry 3 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 203,125 Underlying: Ordinary Shares · 15,625 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. F2 · derivative.exercise_date: The 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, and January 1, April 1, July 1, and October 1, 2029. F2 · derivative.expiration_date: The 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, and January 1, April 1, July 1, and October 1, 2029. Read SEC document |
| July 01, 2026 Filed Jul 6, 2026 21:13 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | Exercise / conversionOrdinary Shares | 15,625 | $0.00 | $0.00 |
DisclosureSEC source: 0001859690-26-000133 · form4.xml · nonDerivative · entry 1 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 61,376 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. Read SEC document |
| April 06, 2026 Filed Apr 7, 2026 17:18 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | SaleOrdinary Shares | 7,595 | $13.51 | $102,621.36 |
DisclosureSEC source: 0001859690-26-000067 · form4.xml · nonDerivative · entry 1 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 45,751 Read SEC document |
| April 01, 2026 Filed Apr 3, 2026 23:22 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | Exercise / conversionRestricted Stock Units · Derivative | 15,625 | $0.00 | $0.00 |
DisclosureSEC source: 0001859690-26-000058 · form4.xml · derivative · entry 2 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 218,750 Underlying: Ordinary Shares · 15,625 shares Expires not disclosed Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_price: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. F2 · derivative.exercise_date: 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, and January 1, April 1, July 1, and October 1, 2028, and January 1, April 1, July 1, and October 1, 2029. F2 · derivative.expiration_date: 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, and January 1, April 1, July 1, and October 1, 2028, and January 1, April 1, July 1, and October 1, 2029. Read SEC document |
| April 01, 2026 Filed Apr 3, 2026 23:22 UTC | Arqit Quantum Inc. ARQQ · Entity 5853 | Exercise / conversionOrdinary Shares | 15,625 | $0.00 | $0.00 |
DisclosureSEC source: 0001859690-26-000058 · form4.xml · nonDerivative · entry 1 Leaver Andrew · CIK 0002035890 · Chief Executive Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 53,346 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · price: Restricted Stock Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.