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  4. [Form 4] Arqit Quantum Inc. Insider Trading Activity

Heritage Assets SCSp tied to Arqit (NASDAQ: ARQQ) sells 612 Business Combination Warrants

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

Rhea-AI Filing Summary

Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi, through Heritage Assets SCSp, reported open-market sales of Business Combination Warrants linked to ARQQ ordinary shares. Heritage Assets SCSp sold 492 warrants at $1.80 on June 23, 2026 and 120 warrants at $1.40 on June 22, 2026, for a total of 612 warrants.

Each warrant has an exercise price of $11.50 and, after a 1‑for‑25 reverse stock split implemented on September 19, 2024, entitles the holder to purchase 0.04 ARQQ ordinary share, requiring 25 warrants for one whole share at an aggregate exercise price of $287.50. After these sales, the reporting person continues to beneficially own 413,250 Business Combination Warrants, equivalent to 16,530 ARQQ ordinary shares on a post‑reverse‑split basis.

Positive

  • None.

Negative

  • None.
Insider Lefebvre d'Ovidio Manfredi
Role Director
Sold 612 shs ($1K)
Type Security Shares Price Value
Sale Business Combination Warrants (right to buy) 492 $1.80 $885.60
Sale Business Combination Warrants (right to buy) 120 $1.40 $168.00
Holdings After Transaction: Business Combination Warrants (right to buy) — 33,551.76 shares (Indirect, Beneficially owned through Heritage Assets SCSp)
Footnotes (1)
  1. F1. On September 19, 2024, Arqit Quantum Inc. (ARQQ) announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 413,250 Business Combination Warrants, which, if exercised in full, would be equivalent to 16,530.00 ARQQ ordinary shares on a post-reverse stock split basis.
Warrants sold June 23, 2026 492 warrants at $1.80 Open-market sale by Heritage Assets SCSp
Warrants sold June 22, 2026 120 warrants at $1.40 Open-market sale by Heritage Assets SCSp
Total warrants sold 612 Business Combination Warrants Two open-market sales in June 2026
Warrant exercise price $11.50 per ordinary share Business Combination Warrants
Post-split warrant-to-share ratio 25 warrants for 1 share 0.04 share per warrant after reverse split
Warrant aggregate exercise cost $287.50 per whole share 25 warrants × $11.50 exercise price
Warrants beneficially owned 413,250 warrants Equivalent to 16,530 ARQQ ordinary shares
Underlying shares equivalent 16,530 ordinary shares If all Business Combination Warrants exercised
Business Combination Warrants financial
"Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time"
reverse stock split financial
"announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares"
A reverse stock split reduces a company's number of outstanding shares while raising the price per share proportionally, so the total value of each investor's holding is unchanged; a 1-for-10 split turns 100 shares worth $1 each into 10 shares worth $10 each. Companies often do this to regain compliance with an exchange's minimum price rule or to attract investors who avoid very low-priced stocks.
exercise price financial
"Each Business Combination Warrant has an exercise price of $11.50"
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
ordinary shares financial
"to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis"
Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.
beneficially owns financial
"The reporting person beneficially owns 413,250 Business Combination Warrants"
Beneficially owns means a person or entity enjoys the economic benefits and control of a security even if the legal title or registration is held in another name. Think of it like having the keys and profits from a car that is registered to a friend: you use it, benefit from it, and make decisions about it even though the official paperwork lists someone else. For investors, this matters because it reveals who truly controls shares, affects voting power, potential conflicts of interest, and regulatory disclosure obligations.

FAQ

What did Arqit Quantum (ARQQ) insider Lefebvre d'Ovidio Manfredi report on this Form 4?
The Form 4 reports that an entity associated with director Lefebvre d'Ovidio Manfredi, Heritage Assets SCSp, sold 612 Business Combination Warrants in open-market transactions, while retaining a much larger remaining warrant position linked to ARQQ ordinary shares.

How many Arqit Quantum (ARQQ) warrants were sold and at what prices?
Heritage Assets SCSp sold 492 Business Combination Warrants at $1.80 each on June 23, 2026, and 120 warrants at $1.40 each on June 22, 2026, for a total of 612 warrants sold in open-market transactions.

What does each Arqit Quantum (ARQQ) Business Combination Warrant entitle the holder to buy?
Each Business Combination Warrant has an exercise price of $11.50 and, after Arqit's 1-for-25 reverse stock split, can be exercised to purchase 0.04 ARQQ ordinary share. Holders must exercise 25 warrants to receive one whole ordinary share.

How many Arqit Quantum (ARQQ) warrants does the reporting person still beneficially own?
The reporting person beneficially owns 413,250 Business Combination Warrants following these transactions. If fully exercised on a post-reverse-split basis, these warrants would be equivalent to 16,530 ARQQ ordinary shares, according to the disclosure footnote.

How did Arqit Quantum’s (ARQQ) reverse stock split affect the Business Combination Warrants?
On September 19, 2024, Arqit implemented a 1-for-25 reverse stock split of its ordinary shares. After this, each Business Combination Warrant’s terms adjusted so that 25 warrants are required to receive one whole ARQQ ordinary share, exercisable at $11.50 per share.

Are the Arqit Quantum (ARQQ) warrant sales direct or indirect holdings of the insider?
The warrants are reported as indirectly owned, described as beneficially owned through Heritage Assets SCSp. The Form 4 attributes the open-market sales to this entity associated with director Lefebvre d'Ovidio Manfredi rather than to direct personal holdings.

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Form 4 Insider Transactions: What Each Field Means →
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)
LONDONX0SW1H 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)
06/22/2026		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
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
Business Combination Warrants (right to buy)(1)06/22/2026S120 (1)09/03/2026Ordinary Shares120$1.417,021.76IBeneficially owned through Heritage Assets SCSp
Business Combination Warrants (right to buy)(1)06/23/2026S492 (1)09/03/2026Ordinary Shares492$1.816,530IBeneficially owned through Heritage Assets SCSp
Explanation of Responses:
1. On September 19, 2024, Arqit Quantum Inc. (ARQQ) announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share, par value $0.0025 per share. Each Business Combination Warrant has an exercise price of $11.50 and can be exercised at any time, at the holder's election, to purchase 0.04 of an ARQQ ordinary share on a post-reverse stock split basis, and cannot be exercised for fractional shares. Accordingly, on a post-reverse stock split basis holders of Business Combination Warrants are required to exercise at least 25 Business Combination Warrants in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50 per whole ARQQ ordinary share. The reporting person beneficially owns 413,250 Business Combination Warrants, which, if exercised in full, would be equivalent to 16,530.00 ARQQ ordinary shares on a post-reverse stock split basis.
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.
/s/ Amir Heyat, as Attorney-in-Fact06/24/2026
** 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)

Source: View Original Filing on SEC EDGAR