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

Arqit Quantum (ARQQ) director logs small open-market warrant sales

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

Rhea-AI Filing Summary

Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi reported small open-market sales of Business Combination Warrants indirectly held through Heritage Assets SCSp. On two dates, a total of 293 warrants were sold at $2.10 per warrant, reducing the position slightly.

After these transactions, the reporting person beneficially owns 615,911 Business Combination Warrants, equivalent to 24,636.44 ordinary shares on a post-reverse-split basis. Each warrant has an exercise price of $11.50 and, following a 25-for-1 reverse stock split, represents the right to purchase 0.04 of an ordinary share, requiring 25 warrants for one whole share.

Positive

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Insider Lefebvre d'Ovidio Manfredi
Role Director
Sold 293 shs ($615.30)
Type Security Shares Price Value
Sale Business Combination Warrants (right to buy) 112 $2.10 $235.20
Sale Business Combination Warrants (right to buy) 181 $2.10 $380.10
Holdings After Transaction: Business Combination Warrants (right to buy) — 49,385.24 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 615,911 Business Combination Warrants, which, if exercised in full, would be equivalent to 24,636.44 ARQQ ordinary shares on a post-reverse stock split basis.
First warrant sale 181 warrants at $2.10 Open-market sale of Business Combination Warrants
Second warrant sale 112 warrants at $2.10 Open-market sale of Business Combination Warrants
Total warrants sold 293 warrants Combined across two open-market sales
Warrants remaining 615,911 warrants Beneficially owned after transactions
Share equivalent 24,636.44 ordinary shares Post-reverse-split equivalent if all warrants exercised
Warrant exercise price $11.50 per warrant Exercise price for Business Combination Warrants
Reverse split ratio 25-for-1 ARQQ ordinary share reverse stock split
Warrants per share 25 warrants for 1 share Post-split; aggregate exercise price $287.50 per share
Business Combination Warrants (right to buy) financial
"Business Combination Warrants (right to buy)"
reverse stock split financial
"announced the implementation of a reverse stock split whereby every 25"
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.
beneficially owns financial
"The reporting person beneficially owns 615,911 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.
ordinary shares financial
"would be equivalent to 24,636.44 ARQQ ordinary shares on a post-reverse"
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.
open-market sale financial
"transaction_action": "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

FAQ

What insider transactions did Arqit Quantum (ARQQ) report in this Form 4?
The filing shows two open-market sales of Business Combination Warrants, totaling 293 warrants sold at $2.10 each. These derivative securities are indirectly held through Heritage Assets SCSp on behalf of director Lefebvre d'Ovidio Manfredi.

How many Arqit Quantum Business Combination Warrants were sold and at what price?
The insider sold 181 warrants on one date and 112 warrants on another, for a combined 293 warrants. Each transaction was executed at a price of $2.10 per warrant in open-market sales of derivative securities.

What is the remaining Arqit Quantum warrant position after these sales?
After the reported sales, the insider beneficially owns 615,911 Business Combination Warrants. According to the filing, this position is economically equivalent to 24,636.44 Arqit Quantum ordinary shares on a post-reverse stock split basis.

How do Arqit Quantum’s Business Combination Warrants convert into ordinary shares?
Each Business Combination Warrant has an $11.50 exercise price and, post reverse stock split, can purchase 0.04 of an ordinary share. Holders must exercise 25 warrants together to receive one whole ordinary share at an aggregate $287.50 price.

What reverse stock split did Arqit Quantum (ARQQ) implement affecting its warrants?
Arqit Quantum implemented a 25-for-1 reverse stock split, consolidating every 25 ordinary shares into one. Following this, each Business Combination Warrant now represents 0.04 of a post-split ordinary share and cannot be exercised for fractional shares.

Are the Arqit Quantum warrant holdings owned directly by the reporting person?
The filing states the Business Combination Warrants are beneficially owned through Heritage Assets SCSp. This indicates the position is held indirectly via that entity rather than directly in the individual’s own name.

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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)
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)
05/08/2026		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)05/08/2026S181 (1)09/03/2026Ordinary Shares181$2.124,748.8IBeneficially owned through Heritage Assets SCSp
Business Combination Warrants (right to buy)(1)05/11/2026S112 (1)09/03/2026Ordinary Shares112$2.124,636.44IBeneficially 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 615,911 Business Combination Warrants, which, if exercised in full, would be equivalent to 24,636.44 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-Fact05/12/2026
** 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