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Arqit Quantum (NASDAQ: ARQQ) insider entity sells 54,639 share equivalents

Filing Impact
(High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Arqit Quantum Inc. director-associated entity Heritage Assets SCSp reported net open-market sales of 54,639 ARQQ ordinary-share equivalents. On June 30, 2026 and July 1, 2026, it sold 32,422 and 22,022 ordinary shares at weighted average prices of $30.24 and $30.07 per share, across multiple trades within disclosed price ranges.

The entity also sold 154 and 41 Business Combination Warrants at weighted average prices of $1.60 and $1.40. After these transactions, it indirectly holds 4,342,448 ordinary shares and 369,792 Business Combination Warrants, which are equivalent to 14,791.68 ordinary shares on a post-reverse-split basis.

Positive

  • None.

Negative

  • None.
Insider Lefebvre d'Ovidio Manfredi
Role null
Sold 54,639 shs ($1.64M)
Type Security Shares Price Value
Sale Business Combination Warrants (right to buy) 41 $1.40 $57.40
Sale Ordinary Shares 32,422 $30.24 $980K
Sale Business Combination Warrants (right to buy) 154 $1.60 $246.40
Sale Ordinary Shares 22,022 $30.07 $662K
Holdings After Transaction: Business Combination Warrants (right to buy) — 14,791.68 shares (Indirect, Beneficially owned through Heritage Assets SCSp); Ordinary Shares — 4,342,448 shares (Indirect, Beneficially owned through Heritage Assets SCSp)
Footnotes (1)
  1. The price reported is a weighted average price. The Ordinary Shares were sold in multiple transactions at prices ranging from $30.00 to $30.29 per Ordinary Share, inclusive. The reporting person undertakes to provide to Arqit Quantum Inc. (the "Issuer") (ARQQ), 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 Ordinary Shares sold at each separate price within the range set forth in this footnote. The price reported is a weighted average price. The Ordinary Shares were sold in multiple transactions at prices ranging from $30.00 to $30.93 per Ordinary Share, 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 Ordinary Shares sold at each separate price within the range set forth in this footnote. 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 369,792 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,791.68 ARQQ ordinary shares on a post-reverse stock split basis. The price reported is a weighted average price. The Business Combination Warrants were sold in multiple transactions at prices ranging from $1.22 to $1.79 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. The price reported is a weighted average price. The Business Combination Warrants were sold in multiple transactions at prices ranging from $1.35 to $1.79 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.
Ordinary shares sold 7/1/2026 32,422 shares at $30.24 Open-market sale by entity associated with director
Ordinary shares sold 6/30/2026 22,022 shares at $30.07 Open-market sale by entity associated with director
Business Combination Warrants sold 6/30/2026 154 warrants at $1.60 Open-market sale, derivative security
Business Combination Warrants sold 7/1/2026 41 warrants at $1.40 Open-market sale, derivative security
Net ordinary-share equivalents sold 54,639 shares Aggregate net-sell direction across all reported transactions
Ordinary shares held after sales 4,342,448 shares Indirect holdings through Heritage Assets SCSp
Business Combination Warrants held 369,792 warrants Equivalent to 14,791.68 ordinary shares post-reverse-split
Warrant share equivalent 14,791.68 shares Ordinary-share equivalent if all warrants exercised
Business Combination Warrants financial
"The reporting person beneficially owns 369,792 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,791.68 ARQQ ordinary shares"
reverse stock split financial
"the Issuer announced the implementation of a reverse stock split whereby every 25 outstanding ARQQ ordinary shares were consolidated into one ordinary share"
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.
weighted average price financial
"The price reported is a weighted average price. The Ordinary Shares were sold in multiple transactions at prices ranging from $30.00 to $30.29 per Ordinary Share"
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
beneficially owned financial
"The reporting person beneficially owns 369,792 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,791.68 ARQQ ordinary shares"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
open-market sale financial
"transaction_action: "open-market sale" and transaction_code_description: "Sale in open market or private transaction""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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)
LONDONSW1H 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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/30/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Ordinary Shares06/30/2026S22,022D$30.07(1)4,374,870IBeneficially owned through Heritage Assets SCSp
Ordinary Shares07/01/2026S32,422D$30.24(2)4,342,448IBeneficially owned through Heritage Assets SCSp
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Business Combination Warrants (right to buy)(3)06/30/2026S154 (3)09/03/2026Ordinary Shares154$1.6(4)14,986.76IBeneficially owned through Heritage Assets SCSp
Business Combination Warrants (right to buy)(3)07/01/2026S41 (3)09/03/2026Ordinary Shares41$1.4(5)14,791.68IBeneficially owned through Heritage Assets SCSp
Explanation of Responses:
1. The price reported is a weighted average price. The Ordinary Shares were sold in multiple transactions at prices ranging from $30.00 to $30.29 per Ordinary Share, inclusive. The reporting person undertakes to provide to Arqit Quantum Inc. (the "Issuer") (ARQQ), 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 Ordinary Shares sold at each separate price within the range set forth in this footnote.
2. The price reported is a weighted average price. The Ordinary Shares were sold in multiple transactions at prices ranging from $30.00 to $30.93 per Ordinary Share, 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 Ordinary Shares sold at each separate price within the range set forth in this footnote.
3. 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 369,792 Business Combination Warrants, which, if exercised in full, would be equivalent to 14,791.68 ARQQ ordinary shares on a post-reverse stock split basis.
4. The price reported is a weighted average price. The Business Combination Warrants were sold in multiple transactions at prices ranging from $1.22 to $1.79 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.
5. The price reported is a weighted average price. The Business Combination Warrants were sold in multiple transactions at prices ranging from $1.35 to $1.79 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.
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-Fact07/02/2026
** Signature of Reporting PersonDate
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 did the Arqit Quantum (ARQQ) insider entity sell in this Form 4?

An entity associated with an Arqit Quantum director sold 54,639 ordinary-share equivalents. This included 32,422 and 22,022 ordinary shares plus sales of Business Combination Warrants on June 30 and July 1, 2026, in open-market transactions.

At what prices were Arqit Quantum (ARQQ) shares sold by the insider entity?

The ordinary shares were sold at weighted average prices of $30.07 and $30.24 per share. Actual trades occurred in ranges from $30.00 to $30.93, with detailed price breakdowns available on request from the issuer, security holders, or SEC staff.

How many Arqit Quantum (ARQQ) shares does the insider entity hold after these sales?

After the reported transactions, the insider-associated entity indirectly holds 4,342,448 ARQQ ordinary shares. These holdings are reported as beneficially owned through Heritage Assets SCSp, reflecting the position remaining following the June 30 and July 1, 2026 sales.

What Business Combination Warrants linked to Arqit Quantum (ARQQ) were sold?

The insider-associated entity sold 154 and 41 Business Combination Warrants at weighted average prices of $1.60 and $1.40. These warrants were sold in multiple trades within stated price ranges, as disclosed in the accompanying Form 4 footnotes.

How many Arqit Quantum (ARQQ) Business Combination Warrants remain held by the insider entity?

The reporting person beneficially owns 369,792 Business Combination Warrants after the transactions. According to the disclosure, if exercised in full, these warrants would be equivalent to 14,791.68 ARQQ ordinary shares on a post-reverse stock split basis.

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

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