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Arqit Quantum (ARQQ) director exercises RSUs, holds 4.34M shares indirectly

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi reported routine equity compensation activity involving Restricted Share Units (RSUs). On July 1, 2026, RSUs were exercised or converted into a total of 4,133 ordinary shares at a stated price of $0.00 per share, with no open‑market purchases or sales.

The filing also shows an indirect holding of 4,342,448 ordinary shares beneficially owned through Heritage Assets SCSP, alongside a smaller direct position in ordinary shares. Footnotes confirm RSUs convert into ordinary shares on a one‑for‑one basis and vest in scheduled quarterly installments through 2028.

Positive

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Negative

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Insider Lefebvre d'Ovidio Manfredi
Role null
Type Security Shares Price Value
Exercise Restricted Share Units 3,584 $0.00 --
Exercise Restricted Share Units 50 $0.00 --
Exercise Restricted Share Units 250 $0.00 --
Exercise Restricted Share Units 249 $0.00 --
Exercise Ordinary Shares 3,584 $0.00 --
Exercise Ordinary Shares 50 $0.00 --
Exercise Ordinary Shares 250 $0.00 --
Exercise Ordinary Shares 249 $0.00 --
holding Ordinary Shares -- -- --
Holdings After Transaction: Restricted Share Units — 14,328 shares (Direct, null); Ordinary Shares — 47,801 shares (Direct, null); Ordinary Shares — 4,342,448 shares (Indirect, beneficially owned through Heritage Assets SCSP)
Footnotes (1)
  1. The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. The RSUs vest quarterly in equal installments on July 1 and October 1, 2026, and January 1, April 1, and July 1, 2027. The RSUs vested on July 1, 2026. 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. 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.
RSU exercises 4,133 shares Total shares from derivative exercises on July 1, 2026
Indirect ordinary shares 4,342,448 shares Beneficially owned through Heritage Assets SCSP after transactions
Exercise price $0.00 per share Stated price for RSU-to-share conversions
RSU-to-share ratio 1 RSU : 1 share Conversion rate of RSUs into ordinary shares per footnote
Exercise transactions 4 transactions Derivative exercises (code M) in transaction summary
Derivative transaction count 4 entries RSU-related derivative records in the filing
Restricted Share Units financial
"The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis."
Restricted share units (RSUs) are a promise from a company to give an employee or service provider actual shares or cash equal to the shares after certain conditions are met, typically staying with the company for a set time or hitting performance targets. Think of them like a time-locked gift card that becomes usable only after you’ve earned it. For investors, RSUs matter because they align employee incentives with company performance and can increase the number of shares outstanding over time, diluting existing ownership and affecting earnings per share.
derivative exercise/conversion financial
"transaction_action": "derivative exercise/conversion""
beneficially owned financial
"nature_of_ownership": "beneficially owned through Heritage Assets SCSP""
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
vest quarterly financial
"The RSUs vest quarterly in equal installments on July 1 and October 1, 2026, and January 1, April 1, and July 1, 2027."
Form 4 regulatory
"INSIDER FILING DATA (Form 4):"
Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.
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Learn about SEC filing dates
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Lefebvre d'Ovidio Manfredi

(Last)(First)(Middle)
3 ORCHARD PLACE

(Street)
LONDONSW1H 0BF

(City)(State)(Zip)

UNITED KINGDOM

(Country)
2. Issuer Name and Ticker or Trading Symbol
Arqit Quantum Inc. [ ARQQ ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/01/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Ordinary Shares07/01/2026M3,584A$0(1)47,801D
Ordinary Shares07/01/2026M50A$0(1)47,851D
Ordinary Shares07/01/2026M250A$0(1)48,101D
Ordinary Shares07/01/2026M249A$0(1)48,350D
Ordinary Shares4,342,448Ibeneficially owned through Heritage Assets SCSP
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Share Units(1)07/01/2026M3,584 (2) (2)Ordinary Shares3,584$014,328D
Restricted Share Units(1)07/01/2026M50 (3) (3)Ordinary Shares50$00D
Restricted Share Units(1)07/01/2026M250 (4) (4)Ordinary Shares250$01,251D
Restricted Share Units(1)07/01/2026M249 (5) (5)Ordinary Shares249$02,250D
Explanation of Responses:
1. The Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis.
2. The RSUs vest quarterly in equal installments on July 1 and October 1, 2026, and January 1, April 1, and July 1, 2027.
3. The RSUs vested on July 1, 2026.
4. 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.
5. 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.
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. Ex.24 - Power of Attorney
/s/ Noleen McDonnell, as Attorney-in-Fact07/06/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did Arqit Quantum Inc. (ARQQ) director Lefebvre d'Ovidio Manfredi report in this Form 4?

The Form 4 reports that RSUs were exercised or converted into 4,133 Arqit Quantum ordinary shares on July 1, 2026. These are equity compensation-related transactions, not open‑market buying or selling, and reflect routine vesting of previously granted Restricted Share Units.

Were any Arqit Quantum Inc. (ARQQ) shares bought or sold on the open market in this filing?

No open‑market purchases or sales are shown; all coded transactions are derivative exercises (code M). The reported activity reflects RSUs converting into ordinary shares at a stated price of $0.00 per share, consistent with equity awards rather than discretionary trading.

How many Arqit Quantum (ARQQ) shares did the director acquire through RSU exercises?

The transaction summary shows 4,133 ordinary shares acquired via derivative exercises on July 1, 2026. These shares came from vested RSUs converting one‑for‑one into ordinary shares, according to the footnotes describing the RSU terms and conversion mechanics.

What indirect ownership in Arqit Quantum Inc. (ARQQ) is disclosed in the Form 4?

The filing reports 4,342,448 ordinary shares beneficially owned indirectly through Heritage Assets SCSP. This large indirect holding is separate from the director’s smaller direct position and is classified as indirect ownership in the Form 4 data fields.

How do the Arqit Quantum (ARQQ) RSUs described in the filing vest over time?

Footnotes state the RSUs vest quarterly in equal installments on specific dates. Schedules include July 1 and October 1, 2026, and January 1, April 1, July 1, and October 1 in 2027, with some grants extending quarterly vesting dates into 2028.

What is the conversion rate from RSUs to Arqit Quantum (ARQQ) ordinary shares?

The footnotes specify that the Restricted Share Units convert into ARQQ ordinary shares on a one‑for‑one basis. This means each vested RSU delivers one ordinary share when it is settled, aligning the reported 4,133 exercised RSUs with 4,133 ordinary shares.