Arqit Quantum (ARQQ) CFO receives 5,202 RSUs with multi-year vesting

Rhea-AI Filing Summary

Arqit Quantum Inc.’s Chief Financial Officer, Russell Robert Michael, received a grant of 5,202 Restricted Stock Units. Each RSU converts into one ordinary share of ARQQ at no exercise price. According to the footnote, these RSUs vest over nine quarters, starting with one-third on 1 April 2027 and the remainder in equal installments over eight subsequent quarters.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Russell Robert Michael

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	5,202	$0.00	--

Holdings After Transaction: Restricted Stock Units — 5,202 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

RSUs granted: 5,202 units Conversion ratio: 1 RSU : 1 ordinary share Exercise price: $0.00 per RSU +3 more

6 metrics

RSUs granted 5,202 units Restricted Stock Units granted to CFO on 1 April 2026

Conversion ratio 1 RSU : 1 ordinary share RSUs convert into ARQQ ordinary shares on a one-for-one basis

Exercise price $0.00 per RSU No cash exercise price for RSU conversion

Total RSUs after grant 5,202 units Total Restricted Stock Units held following this transaction

Vesting start 1 April 2027 One-third of RSUs vest on this date

Vesting schedule length 9 quarters One-third first, remainder equally over eight additional quarters

Key Terms

Restricted Stock Units, RSUs, ordinary shares, grant, award, or other acquisition, +1 more

5 terms

Restricted Stock Units financial

"Russell Robert Michael received a grant of 5,202 Restricted Stock Units."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

RSUs financial

"Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis."

RSUs, or restricted stock units, are a form of company shares given to employees as part of their compensation. They are typically awarded with certain restrictions, such as a waiting period before they can be fully owned or sold, similar to earning a gift that becomes fully yours over time. For investors, RSUs can impact a company's stock offerings and reflect how much the company relies on stock-based incentives to attract and retain talent.

ordinary shares financial

"RSUs convert into ARQQ ordinary shares on a one-for-one basis."

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.

grant, award, or other acquisition financial

"transaction_code_description: Grant, award, or other acquisition"

vesting financial

"RSUs vest over nine quarters, one third on 1 April 2027 and then equally over eight quarters."

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

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Form 4 Insider Transactions: What Each Field Means →

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^*

Russell Robert Michael

(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 Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026

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
Restricted Stock Units	(1)	04/01/2026		A		5,202		(1)	(1)	Ordinary Shares	5,202	$0	5,202	D

Explanation of Responses:

1. Restricted Share Units ("RSUs") convert into ARQQ ordinary shares on a one-for-one basis. vest over nine quarters, one third on 1 April 2027 and then equally over eight quarters.

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	06/22/2026
	** 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)

FAQ

What insider transaction did Arqit Quantum (ARQQ) report for its CFO?

Arqit Quantum reported that its Chief Financial Officer, Russell Robert Michael, received a grant of 5,202 Restricted Stock Units. These units are a form of equity compensation that can convert into ordinary shares of ARQQ based on a defined vesting schedule.

How many Restricted Stock Units were granted to the ARQQ CFO?

The ARQQ Chief Financial Officer was granted 5,202 Restricted Stock Units. This award represents potential future ownership of 5,202 ordinary shares, subject to the vesting conditions described in the filing’s footnote and continued service or other applicable requirements.

When do the granted RSUs for Arqit Quantum’s CFO start vesting?

The granted RSUs start vesting on 1 April 2027. One-third of the 5,202 units vests on that date, and the remaining units vest in equal installments over the following eight quarters, creating a nine-quarter vesting period overall.

What is the conversion ratio of the ARQQ CFO’s RSUs into shares?

Each Restricted Stock Unit converts into one Arqit Quantum ordinary share on a one-for-one basis. This means that, once fully vested and settled, 5,202 RSUs could result in 5,202 ordinary ARQQ shares being issued under the terms described.

Did the ARQQ CFO pay anything for the RSU grant reported in the Form 4?

The reported transaction price per RSU is zero, indicating no cash payment for the grant. This aligns with typical equity compensation awards, where executives receive RSUs as part of their compensation package rather than through an open-market purchase.

How many ARQQ RSUs does the CFO hold after this reported transaction?

After this RSU grant, the Chief Financial Officer holds 5,202 Restricted Stock Units according to the filing. This reflects the total derivative position from this specific award, which can convert into the same number of ordinary shares if vesting and settlement conditions are satisfied.