What reverse stock split did Arqit Quantum (ARQQ) previously complete related to these warrants?

On September 19, 2024, Arqit Quantum implemented a reverse stock split consolidating every 25 ordinary shares into one share. After this 25‑for‑1 consolidation, each Business Combination Warrant now represents the right to acquire 0.04 of a post-split ordinary share.

Entity tied to Arqit Quantum (ARQQ) director sells 967 Business Combination Warrants

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Arqit Quantum Inc. director-associated entity Heritage Assets SCSp reported an open-market sale of 967 Business Combination Warrants on April 29, 2026 at $2.30 per warrant. These derivative securities each give the right to buy 0.04 ordinary share at an exercise price of $11.50.

Following the transaction, the reporting person beneficially owns 655,853 Business Combination Warrants, equivalent to 26,234.12 Arqit Quantum ordinary shares on a post–reverse stock split basis. The warrants stem from a prior 25‑for‑1 reverse stock split of Arqit Quantum ordinary shares implemented on September 19, 2024.

Insider Trade Summary

Net Seller: 967 shares ($2,224)

Net Sell 1 txn

Insider Lefebvre d'Ovidio Manfredi

Role null

Sold 967 shs ($2K)

Type	Security	Shares	Price	Value
Sale	Business Combination Warrants (right to buy)	967	$2.30	$2K

Holdings After Transaction: Business Combination Warrants (right to buy) — 26,234.12 shares (Indirect, Beneficially owned through Heritage Assets SCSp)

Footnotes (1)

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Key Figures

Warrants sold: 967 Business Combination Warrants Sale price: $2.30 per warrant Warrants remaining: 655,853 Business Combination Warrants +5 more

8 metrics

Warrants sold 967 Business Combination Warrants Open-market sale on April 29, 2026

Sale price $2.30 per warrant Open-market transaction

Warrants remaining 655,853 Business Combination Warrants Beneficially owned after reported sale

Share equivalent 26,234.12 ordinary shares If all 655,853 warrants exercised post-reverse split

Warrant exercise price $11.50 per warrant Exercise price for underlying ordinary shares

Reverse split ratio 25-for-1 reverse stock split Implemented on September 19, 2024

Warrant-to-share ratio 0.04 share per warrant Post-reverse split ordinary share equivalent

Aggregate exercise price per share $287.50 per whole ordinary share 25 warrants required to receive one whole share

Key Terms

Business Combination Warrants, reverse stock split, beneficially owns, 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.

beneficially owns financial

"The reporting person beneficially owns 655,853 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.

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

"would be equivalent to 26,234.12 ARQQ ordinary shares 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.

Form 4 Insider Transactions: What Each Field Means →

04/30/2026 - 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)
04/29/2026

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⁾	04/29/2026		S			967	⁽¹⁾	09/03/2026	Ordinary Shares	967	$2.3	26,234.12	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 655,853 Business Combination Warrants, which, if exercised in full, would be equivalent to 26,234.12 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	04/30/2026
	** 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 transaction did Arqit Quantum (ARQQ) disclose in this Form 4?

Arqit Quantum reported that Heritage Assets SCSp, an entity through which director Lefebvre d'Ovidio Manfredi holds derivatives, sold 967 Business Combination Warrants at $2.30 each. These warrants are derivative securities linked to Arqit Quantum ordinary shares rather than common stock directly.

How large is the Arqit Quantum (ARQQ) warrant sale compared with the insider’s holdings?

The filing shows a sale of 967 Business Combination Warrants, while the reporting person beneficially owns 655,853 such warrants. After the transaction, the position equals 26,234.12 ordinary shares, indicating the sale represents only a very small portion of the total warrant holdings.

What do Arqit Quantum (ARQQ) Business Combination Warrants entitle the holder to buy?

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

How many Arqit Quantum (ARQQ) shares could the insider receive if all warrants were exercised?

The filing states the reporting person beneficially owns 655,853 Business Combination Warrants. If fully exercised under current terms, those warrants would be equivalent to 26,234.12 Arqit Quantum ordinary shares, reflecting the 0.04 share per warrant ratio after the reverse stock split.

Does this Arqit Quantum (ARQQ) Form 4 involve direct or indirect ownership?

The transaction is reported as indirect ownership. The 967 Business Combination Warrants sold, and the remaining 655,853 warrants, are beneficially owned through Heritage Assets SCSp, rather than being held directly in the director’s personal name according to the filing’s ownership description.