Arqit Quantum director sells warrant equivalents

Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi reported indirect open-market sales of Business Combination Warrants beneficially owned through Heritage Assets SCSp.

Rhea-AI Filing Summary

Arqit Quantum Inc. director Lefebvre d'Ovidio Manfredi reported indirect open-market sales of Business Combination Warrants beneficially owned through Heritage Assets SCSp. The entity sold 713 warrant-equivalent units at $3.00 and 159 at $3.10, while retaining 28,992.8 ordinary share equivalents represented by 724,820 warrants expiring on September 3, 2026.

Insider Trade Summary

Net Seller: 872 shares

Net Sell 2 txns

Insider Lefebvre d'Ovidio Manfredi

Role Director

Sold 872 shs ($3K)

Type	Security	Shares	Price	Value
Sale	Business Combination Warrants (right to buy)	159	$3.10	$492.90
Sale	Business Combination Warrants (right to buy)	713	$3.00	$2K

Holdings After Transaction: Business Combination Warrants (right to buy) — 58,144.64 contracts (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 724,820 Business Combination Warrants, which, if exercised in full, would be equivalent to 28,992.8 ARQQ ordinary shares on a post-reverse stock split basis.

Key Figures

Warrant-equivalent units sold: 872 units Sale price (first trade): $3.00 per unit Sale price (second trade): $3.10 per unit +5 more

8 metrics

Warrant-equivalent units sold 872 units Indirect open-market sales over April 15–16, 2026

Sale price (first trade) $3.00 per unit 713 units sold on April 15, 2026

Sale price (second trade) $3.10 per unit 159 units sold on April 16, 2026

Ordinary share equivalents remaining 28,992.8 shares Equivalent ordinary shares if 724,820 warrants fully exercised

Business Combination Warrants held 724,820 warrants Beneficially owned after transactions

Warrant exercise price $11.50 per warrant Exercise price to acquire ARQQ ordinary shares

Exercise ratio post-split 25 warrants per share 25 warrants required to receive one whole ordinary share

Warrant expiration date September 3, 2026 Expiration for Business Combination Warrants in this filing

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 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.

beneficially owns financial

"The reporting person beneficially owns 724,820 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.

fractional shares financial

"and cannot be exercised for fractional shares"

Fractional shares are portions of a whole share of a stock or fund, allowing investors to own less than one full unit. They make it possible to invest a specific dollar amount rather than buy whole shares, like buying a slice of a pizza instead of the entire pie. For investors this lowers the cost barrier, helps with diversification, and lets you reinvest dividends or purchase expensive stocks in small, precise amounts.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

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

The filing reports two indirect open-market sales of Business Combination Warrants associated with director Lefebvre d'Ovidio Manfredi, executed through Heritage Assets SCSp. Together they represent 872 ordinary share equivalents sold over two days at prices between $3.00 and $3.10 per unit.

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

Heritage Assets SCSp sold 713 Business Combination Warrant-equivalent units at $3.00 and 159 units at $3.10. Each unit in the filing corresponds to an ordinary share equivalent, with the transactions classified as open-market sales of derivative securities rather than common stock.

What position does the reporting person retain in Arqit Quantum (ARQQ) warrants?

After these transactions, the reporting person beneficially owns 724,820 Business Combination Warrants. On a post-reverse split basis, these warrants are equivalent to 28,992.8 ARQQ ordinary shares if fully exercised, providing context that the reported sales represent a relatively small portion of the overall position.

How do Arqit Quantum (ARQQ) Business Combination Warrants convert into shares?

Each Business Combination Warrant has an exercise price of $11.50 and entitles the holder to purchase 0.04 of an ARQQ ordinary share after the reverse split. Holders must exercise at least 25 warrants together to receive one whole ordinary share at an aggregate exercise price of $287.50.

What reverse stock split did Arqit Quantum (ARQQ) implement affecting these warrants?

Arqit Quantum implemented a reverse stock split where every 25 outstanding ordinary shares were consolidated into one share. Following this, each Business Combination Warrant now corresponds to 0.04 of a post-split ordinary share, and fractional shares cannot be issued upon exercise under these terms.

Are the Arqit Quantum (ARQQ) warrant sales made directly by the director?

The sales are reported as indirect, with beneficial ownership through Heritage Assets SCSp. This means the transactions are attributed to that entity rather than personal direct holdings, though they are still reported under director Lefebvre d'Ovidio Manfredi for regulatory disclosure and transparency purposes.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/17/2026 - 04:05 PM EDT Learn about SEC filing dates

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)
04/15/2026

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)
			Code	V	Amount	(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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Business Combination Warrants (right to buy)	(1)	04/15/2026		S			713	(1)	09/03/2026	Ordinary Shares	713	$3	29,151.84	I	Beneficially owned through Heritage Assets SCSp
Business Combination Warrants (right to buy)	(1)	04/16/2026		S			159	(1)	09/03/2026	Ordinary Shares	159	$3.1	28,992.8	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 724,820 Business Combination Warrants, which, if exercised in full, would be equivalent to 28,992.8 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/ Manfredi Lefebvre d'Ovidio	04/17/2026
	** 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)