Arqit director sells 458 business combo warrants

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.

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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. On April 17, 2026, 151 warrants were sold at $3.10 each, followed by 307 warrants at $2.80 on April 20, 2026.

Each Business Combination Warrant has an exercise price of $11.50 and entitles the holder to purchase 0.04 of an ARQQ ordinary share on a post-reverse-split basis, requiring 25 warrants to obtain one whole share at an aggregate exercise price of $287.50. The reporting person beneficially owns 713,376 such warrants, which would equal 28,535.04 ARQQ ordinary shares if fully exercised.

Insider Trade Summary

Net Seller: 458 shares

Net Sell 2 txns

Insider Lefebvre d'Ovidio Manfredi

Role Director

Sold 458 shs ($1K)

Type	Security	Shares	Price	Value
Sale	Business Combination Warrants (right to buy)	307	$2.80	$859.60
Sale	Business Combination Warrants (right to buy)	151	$3.10	$468.10

Holdings After Transaction: Business Combination Warrants (right to buy) — 57,376.84 contracts (Indirect, Beneficially owned through Heritage Assets SCSp)

Footnotes (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 713,376 Business Combination Warrants, which, if exercised in full, would be equivalent to 28,535.04 ARQQ ordinary shares on a post-reverse stock split basis.

Key Figures

Warrants sold 2026-04-17: 151 warrants at $3.10 Warrants sold 2026-04-20: 307 warrants at $2.80 Total warrants sold: 458 warrants +5 more

8 metrics

Warrants sold 2026-04-17 151 warrants at $3.10 Open-market sale of Business Combination Warrants

Warrants sold 2026-04-20 307 warrants at $2.80 Open-market sale of Business Combination Warrants

Total warrants sold 458 warrants Net-sell across two derivative transactions

Exercise price per warrant $11.50 Exercise price of each Business Combination Warrant

Warrants per whole share 25 warrants Required to receive one whole ARQQ ordinary share

Aggregate exercise per share $287.50 Total exercise price for one whole ARQQ share

Warrants beneficially owned 713,376 warrants Business Combination Warrants held through Heritage Assets SCSp

Ordinary share equivalent 28,535.04 shares If all 713,376 warrants are fully exercised post-split

Key Terms

Business Combination Warrants, reverse stock split, beneficially owns, 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 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 713,376 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.

aggregate exercise price financial

"in order to receive one whole ARQQ ordinary share at an aggregate exercise price of $287.50"

indirect ownership financial

"Beneficially owned through Heritage Assets SCSp"

FAQ

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

What insider transactions did ARQQ disclose for Lefebvre d'Ovidio Manfredi?

Arqit Quantum Inc. reported that director Lefebvre d'Ovidio Manfredi, via Heritage Assets SCSp, sold 151 Business Combination Warrants at $3.10 and 307 warrants at $2.80. These were open-market warrant sales, not exercises into ordinary shares.

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

A total of 458 Business Combination Warrants were sold: 151 warrants at $3.10 each on April 17, 2026, and 307 warrants at $2.80 each on April 20, 2026. Both transactions were reported as open-market sales of derivative securities.

What does each Arqit Business Combination Warrant entitle the holder to buy?

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

How many Arqit (ARQQ) warrants does the reporting person still beneficially own?

The reporting person beneficially owns 713,376 Business Combination Warrants through Heritage Assets SCSp. If all these warrants were exercised, they would correspond to 28,535.04 ARQQ ordinary shares on a post-reverse stock split basis, according to the disclosure footnote.

How did Arqit’s reverse stock split affect its Business Combination Warrants?

Arqit implemented a reverse stock split where every 25 ordinary shares became one share. After this, each Business Combination Warrant now represents the right to buy 0.04 of an ordinary share, and 25 warrants must be exercised together to obtain one whole post-split share.

Are the warrant sales by the Arqit insider direct or indirect holdings?

The reported warrant sales are from indirect holdings. The Form 4 states the Business Combination Warrants are beneficially owned through Heritage Assets SCSp, and ownership is classified as indirect for both transactions disclosed in the filing.

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Accepted by SEC EDGAR 04/21/2026 - 04:05 PM EDT

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)
04/17/2026

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⁾	04/17/2026		S			151	⁽¹⁾	09/03/2026	Ordinary Shares	151	$3.1	28,841.8	I	Beneficially owned through Heritage Assets SCSp
Business Combination Warrants (right to buy)	⁽¹⁾	04/20/2026		S			307	⁽¹⁾	09/03/2026	Ordinary Shares	307	$2.8	28,535.04	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 713,376 Business Combination Warrants, which, if exercised in full, would be equivalent to 28,535.04 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	04/21/2026
	** 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