Arqit Quantum CEO sells 7,595 shares at $13.51

Arqit Quantum Inc. Chief Executive Officer Andrew Leaver reported an open-market sale of 7,595 Ordinary Shares.

Rhea-AI Filing Summary

Arqit Quantum Inc. Chief Executive Officer Andrew Leaver reported an open-market sale of 7,595 Ordinary Shares. The shares were sold at an average price of $13.5117 per share. Following this transaction, he holds 45,751 Ordinary Shares directly.

Insights

Insider trading analyst

CEO executes a modest open-market share sale while retaining a substantial direct holding.

Chief Executive Officer Andrew Leaver sold 7,595 Ordinary Shares of Arqit Quantum Inc. in an open-market transaction at $13.5117 per share. This is a straightforward sale with no derivatives exercised in connection with the trade.

After the sale, Leaver directly holds 45,751 Ordinary Shares. The filing shows no remaining derivative positions, indicating this event reflects only a cash sale of existing shares rather than an options exercise or structural change in his equity exposure.

Insider Trade Summary

Net Seller: 7,595 shares

Net Sell 1 txn

Insider Leaver Andrew

Role Chief Executive Officer

Sold 7,595 shs ($103K)

Type	Security	Shares	Price	Value
Sale	Ordinary Shares	7,595	$13.5117	$103K

Holdings After Transaction: Ordinary Shares — 45,751 shares (Direct)

Key Figures

Shares sold: 7,595 shares Sale price: $13.5117 per share Shares held after sale: 45,751 shares +1 more

4 metrics

Shares sold 7,595 shares Ordinary Shares sold in open-market transaction

Sale price $13.5117 per share Average price for the 7,595 Ordinary Shares sold

Shares held after sale 45,751 shares Ordinary Shares directly owned post-transaction

Net shares sold 7,595 shares Net sell direction from transaction summary

Key Terms

open-market sale, Ordinary Shares, Form 4

3 terms

open-market sale financial

"transaction_action": "open-market sale""

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.

Ordinary Shares financial

"security_title": "Ordinary Shares""

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 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

What did Arqit Quantum (ARQQ) CEO Andrew Leaver report in this Form 4?

Arqit Quantum CEO Andrew Leaver reported an open-market sale of 7,595 Ordinary Shares. The transaction was executed at an average price of $13.5117 per share, and it reflects a straightforward sale of existing directly held shares.

How many Arqit Quantum (ARQQ) shares did the CEO sell and at what price?

Andrew Leaver sold 7,595 Arqit Quantum Ordinary Shares in an open-market transaction. The reported average sale price was $13.5117 per share, giving a clear indication of the price level at which this insider sale occurred.

How many Arqit Quantum (ARQQ) shares does the CEO hold after the reported sale?

Following the reported transaction, Arqit Quantum CEO Andrew Leaver directly holds 45,751 Ordinary Shares. This post-transaction figure shows the remaining size of his direct equity position after the 7,595-share open-market sale.

Was the Arqit Quantum (ARQQ) CEO’s transaction a buy or a sell?

The transaction reported by Arqit Quantum CEO Andrew Leaver was a sell. It is coded as an open-market sale of 7,595 Ordinary Shares, indicating a disposition of shares rather than a purchase or option exercise.

Did the Arqit Quantum (ARQQ) CEO exercise any options in this Form 4 filing?

The Form 4 reflects only a sale of Ordinary Shares and shows no derivative transactions. The derivative summary is empty and the transaction code is an open-market sale, indicating no option exercises or conversions were reported in this filing.

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

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Accepted by SEC EDGAR 04/07/2026 - 01:18 PM 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^*

Leaver Andrew

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/06/2026

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
Ordinary Shares	04/06/2026		S		7,595	D	$13.5117	45,751	D

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

Explanation of Responses:

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/ Noleen McDonnell, as Attorney-in-Fact	04/07/2026
	** 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)