d'Ovidio Manfredi Lefebvre - 09 Jul 2026 Form 4 Insider Report for Arqit Quantum Inc. (ARQQ)

Reporting relationship: Director
Issuer ticker: ARQQ
Reported as of: 09 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 13 Jul 2026, 16:05:47 UTC
Prior SEC filing: 09 Jul 2026
Next SEC filing: 17 Jul 2026
Source filing: View source filing
Reporting owner signature: /s/ Amir Heyat, as Attorney-in-Fact

Key filing fact

d'Ovidio Manfredi Lefebvre filed Form 4 for Arqit Quantum Inc. (ARQQ) on 13 Jul 2026.

Key facts

This page summarizes d'Ovidio Manfredi Lefebvre's Form 4 filing for Arqit Quantum Inc. (ARQQ).
2 reported transactions and 2 derivative rows are listed below.
Accepted by SEC: 13 Jul 2026, 16:05.

Change

Previous filing in this sequence was filed on 09 Jul 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001840678 Primary reporting owner

Lefebvre d'Ovidio Manfredi

Relationship: Director
Address: 3 ORCHARD PLACE, LONDON, UNITED KINGDOM
Signature: /s/ Amir Heyat, as Attorney-in-Fact
Signature date: 13 Jul 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ARQQ transaction Derivative

Business Combination Warrants (right to buy)

Sale

Transaction value
Shares: -404
Change %: -2.8%
Price: $1.19^*
Shares after: 14,105
Date: 09 Jul 2026
Ownership: Beneficially owned through Heritage Assets SCSp
Underlying class: Ordinary Shares
Underlying amount: 404
Exercise price
Footnotes: F1, F2

ARQQ transaction Derivative

Business Combination Warrants (right to buy)

Sale

Transaction value
Shares: -8
Change %: -0.06%
Price: $1.19^*
Shares after: 14,097
Date: 10 Jul 2026
Ownership: Beneficially owned through Heritage Assets SCSp
Underlying class: Ordinary Shares
Underlying amount: 8
Exercise price
Footnotes: F1, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

On September 19, 2024, the Issuer 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 352,421 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,096.84 ARQQ ordinary shares on a post-reverse stock split basis.

Footnote F2

The price reported is a weighted average price. The Business Combination Warrants were sold in multiple transactions at prices ranging from $1.14 to $1.32 per Business Combination Warrant, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission (the "Commission"), upon request, full information regarding the number of Business Combination Warrants sold at each separate price within the range set forth in this footnote.

Footnote F3

The price reported is a weighted average price. The Business Combination Warrants were sold in multiple transactions at prices ranging from $1.18 to $1.20 per Business Combination Warrant, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Commission, upon request, full information regarding the number of Business Combination Warrants sold at each separate price within the range set forth in this footnote.

SEC 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.