Director-linked entity sells 784 Arqit Quantum (ARQQ) warrants in market

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi reported two open-market sales of Business Combination Warrants beneficially owned through Heritage Assets SCSp. The entity sold 428 warrants at $1.60 per warrant on June 16, 2026 and 356 warrants at $1.40 per warrant on June 15, 2026, for a total of 784 warrants sold.

Each warrant has an exercise price of $11.50 and entitles the holder to purchase 0.04 Arqit ordinary shares on a post-reverse-split basis, requiring 25 warrants for one whole share at an aggregate exercise price of $287.50. After these transactions, the reporting person beneficially owns 463,658 Business Combination Warrants, equivalent to 18,546.32 Arqit ordinary shares based on the footnote conversion.

Insider Trade Summary

Net Seller: 784 shares ($1,183)

Net Sell 2 txns

Insider Lefebvre d'Ovidio Manfredi

Role null

Sold 784 shs ($1K)

Type	Security	Shares	Price	Value
Sale	Business Combination Warrants (right to buy)	428	$1.60	$684.80
Sale	Business Combination Warrants (right to buy)	356	$1.40	$498.40

Holdings After Transaction: Business Combination Warrants (right to buy) — 18,546.32 shares (Indirect, Beneficially owned through Heritage Assets SCSp)

Footnotes (1)

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Key Figures

Warrants sold 6/16/2026: 428 warrants at $1.60 Warrants sold 6/15/2026: 356 warrants at $1.40 Total warrants sold: 784 warrants +5 more

8 metrics

Warrants sold 6/16/2026 428 warrants at $1.60 Open-market sale of Business Combination Warrants

Warrants sold 6/15/2026 356 warrants at $1.40 Open-market sale of Business Combination Warrants

Total warrants sold 784 warrants Net sell across two derivative transactions

Warrant exercise price $11.50 per warrant Exercise price for Business Combination Warrants

Warrants required per share 25 warrants Minimum to receive one whole ordinary share

Aggregate exercise per share $287.50 per share Total exercise cost for one ordinary share

Warrants beneficially owned 463,658 warrants Position equivalent to 18,546.32 ordinary shares

Share equivalent of warrants 18,546.32 shares Ordinary share equivalent post-reverse stock split

Key Terms

Business Combination Warrants, reverse stock split, exercise price, aggregate exercise price, +1 more

5 terms

Business Combination Warrants financial

"Each Business Combination Warrant has an exercise price of $11.50"

reverse stock split financial

"announced the implementation of a reverse stock split whereby every 25 outstanding"

A reverse stock split is when a company reduces the number of its shares outstanding, making each share more valuable. For example, if you own 100 shares worth $1 each, a 1-for-10 reverse split would turn your 100 shares into 10 shares worth $10 each. Companies often do this to boost their stock price and appear more stable to investors.

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.

aggregate exercise price financial

"at an aggregate exercise price of $287.50 per whole ARQQ ordinary share"

beneficially owns financial

"The reporting person beneficially owns 463,658 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.

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Form 4 Insider Transactions: What Each Field Means →

06/17/2026 - 04:05 PM

SEC Form 4

FORM 4

UNITED 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)

LONDON

SW1H 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)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/15/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Business Combination Warrants (right to buy)	⁽¹⁾	06/15/2026		S			356	⁽¹⁾	09/03/2026	Ordinary Shares	356	$1.4	18,974.48	I	Beneficially owned through Heritage Assets SCSp
Business Combination Warrants (right to buy)	⁽¹⁾	06/16/2026		S			428	⁽¹⁾	09/03/2026	Ordinary Shares	428	$1.6	18,546.32	I	Beneficially 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 463,658 Business Combination Warrants, which, if exercised in full, would be equivalent to 18,546.32 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-Fact	06/17/2026
	** Signature of Reporting Person	Date
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

FAQ

What insider transactions did Arqit Quantum (ARQQ) disclose in this Form 4?

Arqit Quantum disclosed that an entity associated with director Lefebvre d'Ovidio Manfredi sold 784 Business Combination Warrants in two open-market transactions, at prices of $1.60 and $1.40 per warrant, while retaining a substantial remaining warrant position.

How many Arqit Quantum (ARQQ) warrants were sold and at what prices?

The filing reports sales of 428 Business Combination Warrants at $1.60 per warrant on June 16, 2026, and 356 warrants at $1.40 per warrant on June 15, 2026, for a combined total of 784 warrants sold in open-market transactions.

Who executed the warrant sales reported for Arqit Quantum (ARQQ)?

The warrants are beneficially owned through Heritage Assets SCSp, an entity associated with director Lefebvre d'Ovidio Manfredi. The Form 4 attributes the sales to this indirect ownership structure, rather than to direct personal holdings, reflecting the entity’s role in holding the warrants.

What does each Arqit Quantum (ARQQ) Business Combination Warrant represent?

Each Business Combination Warrant carries an exercise price of $11.50 and can be exercised to purchase 0.04 Arqit ordinary shares on a post-reverse-split basis. Holders must exercise at least 25 warrants together to receive one whole ordinary share.

How many Arqit Quantum (ARQQ) warrants does the reporting person still hold?

According to the footnote, the reporting person beneficially owns 463,658 Business Combination Warrants after the reported sales. If fully exercised, these warrants would be equivalent to 18,546.32 Arqit ordinary shares on a post-reverse stock split basis, based on the disclosed conversion terms.

How did Arqit Quantum (ARQQ) reverse stock split affect its warrants?

Arqit implemented a reverse stock split where every 25 ordinary shares became one share. Post-split, each Business Combination Warrant now entitles the holder to 0.04 of an ordinary share, requiring 25 warrants to obtain one whole share at a total exercise price of $287.50.