Arqit (ARQQ) Form 144: 1,336 Vested Shares to Be Sold on 10/02/2025

Rhea-AI Filing Summary

The filing is a Form 144 notice for Arqit Quantum Inc. (ARQQ) reporting a proposed sale of 1,336 common shares through Fidelity Brokerage Services LLC on 10/02/2025. The filing states an aggregate market value of $57,596.30 and shows 11,545,354 shares outstanding. The shares were acquired on 10/01/2025 via restricted stock vesting with payment characterized as compensation. The form also discloses three sales by Patrick Willcocks during July 2025 totaling 5,373 shares for gross proceeds of $249,857.77. The filer attests they are not aware of undisclosed material adverse information about the issuer.

Positive

• Acquisition method disclosed: shares acquired by restricted stock vesting on 10/01/2025
• Broker identified: sale to be executed via Fidelity Brokerage Services LLC
• Prior sales fully reported: July 2025 sales totaling 5,373 shares for $249,857.77

Negative

• Insider intends to sell recently vested shares: 1,336 shares (aggregate value $57,596.30)
• Filer attestation required: signer affirms no undisclosed material adverse information (absence of such information is not proven)

Insights

Insider Transactions Analyst

Insider is selling recently vested shares; trade size is small relative to outstanding stock.

The notice reports an insider sale plan to sell 1,336 shares that vested on 10/01/2025, to be executed through Fidelity on 10/02/2025, with a stated market value of $57,596.30. Compared with the issuer's 11,545,354 shares outstanding, the proposed sale represents a small fraction of total equity.

Securities Compliance Counsel

Form 144 disclosures appear to follow Rule 144 mechanics and include recent prior sales.

The form discloses acquisition method (restricted stock vesting), payment as compensation, and aggregates prior sales by the same person in July 2025 (5,373 shares; $249,857.77). The signer affirms absence of undisclosed material adverse information, consistent with the form's attestation requirement.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	1336	57596.30	11545354	10/02/2025	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	10/01/2025	Restricted Stock Vesting	Issuer			1336	10/01/2025	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Patrick Willcocks 3 Orchard Place London X0 SW1H 0BF	Common	07/07/2025	373	12317.77
Patrick Willcocks 3 Orchard Place London X0 SW1H 0BF	Common	07/18/2025	2000	87540.00
Patrick Willcocks 3 Orchard Place London X0 SW1H 0BF	Common	07/21/2025	3000	150000.00

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the ARQQ Form 144 disclose about the proposed sale?

The filing discloses a proposed sale of 1,336 common shares through Fidelity Brokerage Services LLC on 10/02/2025, with aggregate market value $57,596.30.

How were the shares acquired that are being sold in the ARQQ Form 144?

The shares were acquired on 10/01/2025 via restricted stock vesting and payment is listed as compensation.

How many ARQQ shares were outstanding per the Form 144?

The filing reports 11,545,354 shares outstanding for the issuer.

Has the seller disclosed recent prior sales of ARQQ shares?

Yes. Patrick Willcocks sold 373, 2,000, and 3,000 shares on 07/07/2025, 07/18/2025, and 07/21/2025 respectively, totaling 5,373 shares for $249,857.77.

Who is the broker named for the proposed ARQQ sale?

The broker named is Fidelity Brokerage Services LLC, located at 900 Salem Street, Smithfield, RI.