Arqit Quantum (ARQQW) files Form 144 for routine 6.5k-share insider sale

Rhea-AI Filing Summary

Arqit Quantum Inc. (symbol: ARQQW) – Form 144 filing. The notice discloses a proposed sale of 6,500 common shares through Fidelity Brokerage Services on 23 June 2025. Based on the stated aggregate market value of $247,182.70, the implied share price is roughly $38.02. The filing lists 11,545,354 shares outstanding; therefore, the planned sale represents only about 0.06 % of total shares and is well below the 5 % threshold generally regarded as material.

The shares being sold were primarily acquired via restricted-stock vesting and stock-option exercises between September 2022 and May 2025, indicating they are affiliate or control securities now becoming eligible for public sale under Rule 144. During the past three months the insider—identified in the filing’s sales history as Daniel Shiu—sold 230 shares on 2 April 2025 for $3,175.91.

The signer affirms no possession of undisclosed material adverse information concerning the issuer, as required by Rule 144. No new operational, financial, or strategic information about Arqit Quantum is provided; the filing is limited to the mechanics of a routine insider share sale.

Insights

Securities Analyst

TL;DR: Small insider Rule 144 sale (6,500 shares, 0.06 % of O/S); unlikely to move the needle for ARQQW investors.

The proposed disposition is minimal relative to Arqit Quantum’s 11.5 million shares outstanding and follows ordinary-course vesting and option exercises. No new business or financial data are disclosed, and the affiliate affirms the absence of undisclosed adverse information. While insider selling can sometimes signal caution, the scale and routine nature suggest a neutral market impact.

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	6500	247182.70	11545354	06/23/2025	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	09/30/2022	Restricted Stock Vesting	Issuer			7	09/30/2022	Compensation
Common	10/03/2022	Restricted Stock Vesting	Issuer			10	10/03/2022	Compensation
Common	10/04/2022	Restricted Stock Vesting	Issuer			8	10/04/2022	Compensation
Common	10/05/2022	Restricted Stock Vesting	Issuer			9	10/05/2022	Compensation
Common	10/06/2022	Restricted Stock Vesting	Issuer			9	10/06/2022	Compensation
Common	10/07/2022	Restricted Stock Vesting	Issuer			9	10/07/2022	Compensation
Common	01/03/2023	Restricted Stock Vesting	Issuer			8	01/03/2023	Compensation
Common	01/04/2023	Restricted Stock Vesting	Issuer			7	01/04/2023	Compensation
Common	01/05/2023	Restricted Stock Vesting	Issuer			8	01/05/2023	Compensation
Common	01/06/2023	Restricted Stock Vesting	Issuer			8	01/06/2023	Compensation
Common	01/09/2023	Restricted Stock Vesting	Issuer			8	01/09/2023	Compensation
Common	01/10/2023	Restricted Stock Vesting	Issuer			8	01/10/2023	Compensation
Common	01/11/2023	Restricted Stock Vesting	Issuer			8	01/11/2023	Compensation
Common	04/01/2023	Restricted Stock Vesting	Issuer			53	04/01/2023	Compensation
Common	07/01/2023	Restricted Stock Vesting	Issuer			58	07/01/2023	Compensation
Common	10/01/2023	Restricted Stock Vesting	Issuer			189	10/01/2023	Compensation
Common	01/02/2024	Restricted Stock Vesting	Issuer			190	01/02/2024	Compensation
Common	03/26/2024	Stock Option Exercise	Issuer			2329	03/26/2024	Cash
Common	04/01/2024	Restricted Stock Vesting	Issuer			190	04/01/2024	Compensation
Common	07/01/2024	Restricted Stock Vesting	Issuer			190	07/01/2024	Compensation
Common	07/31/2024	Stock Option Exercise	Issuer			717	07/31/2024	Cash
Common	10/01/2024	Restricted Stock Vesting	Issuer			331	10/01/2024	Compensation
Common	01/01/2025	Restricted Stock Vesting	Issuer			223	01/01/2025	Compensation
Common	01/28/2025	Stock Option Exercise	Issuer			859	01/28/2025	Cash
Common	04/01/2025	Restricted Stock Vesting	Issuer			458	04/01/2025	Compensation
Common	05/07/2025	Stock Option Exercise	Issuer			606	05/07/2025	Cash

* 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
Daniel Shiu 3 Orchard Place London X0 SW1H 0BF	Common	04/02/2025	230	3175.91

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

How many Arqit Quantum (ARQQW) shares are being sold under this Form 144?

The filing covers a proposed sale of 6,500 common shares.

What is the aggregate market value of the shares in the ARQQW Form 144 filing?

The aggregate market value is listed as $247,182.70.

When is the approximate sale date for the shares disclosed in the Form 144?

The filer intends to sell on or about June 23, 2025.

What percentage of Arqit Quantum’s outstanding shares does the 6,500-share sale represent?

With 11,545,354 shares outstanding, the proposed sale equals roughly 0.06 % of total shares.

Has the insider sold Arqit Quantum shares recently?

Yes. The insider sold 230 shares on April 2, 2025 for $3,175.91.