[144] Arqit Quantum Inc. Warrants SEC Filing

Rhea-AI Filing Summary

Arqit Quantum Inc. – Form 144 notice discloses a proposed secondary sale of the company’s common shares under Rule 144.

• Shares to be sold: 3,000 common shares
• Approximate market value: US $110,700
• Percent of shares outstanding: about 0.026% of the 11,545,354 shares outstanding
• Planned sale date: on or about 23 June 2025
• Broker: Fidelity Brokerage Services LLC, Smithfield, RI
• Exchange: NASDAQ

The filer also reports having sold 532 shares for US $7,346 during the past three months. Multiple prior share acquisitions stemmed from stock-option exercises and routine restricted-stock vesting between May 2023 and May 2024.

No adverse, undisclosed information was affirmed by the signer, and no further financial or strategic data accompany the filing. The filing merely registers an intention to resell shares; it does not involve new issuance or capital raising by the company.

Positive

• Very small size – the 3,000-share sale represents only ~0.026% of shares outstanding, limiting potential market impact.

Negative

• Insider disposition – sale may be interpreted as reduced insider conviction, even if routine.

Insights

Securities Analyst

TL;DR – Small insider sale (0.026% float) is routine, minor impact.

The Form 144 covers an intended sale of 3,000 Arqit Quantum common shares worth roughly US $111k. The percentage of total shares outstanding is negligible and follows prior de minimis dispositions (532 shares sold in April 2025). Shares being sourced from option exercises and RSU vestings suggests standard liquidity management rather than a strategic move. Because the notice does not change the company’s fundamentals, introduce dilution, or reveal undisclosed events, market impact should be minimal. Nonetheless, some investors view any insider selling as a modest negative sentiment signal.

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	3000	110700.00	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	05/09/2023	Stock Option Exercise	Issuer			1223	05/09/2023	Cash
Common	06/13/2023	Restricted Stock Vesting	Issuer			107	06/13/2023	Compensation
Common	07/01/2023	Restricted Stock Vesting	Issuer			209	07/01/2023	Compensation
Common	08/01/2023	Restricted Stock Vesting	Issuer			99	08/01/2023	Compensation
Common	09/01/2023	Restricted Stock Vesting	Issuer			119	09/01/2023	Compensation
Common	09/29/2023	Restricted Stock Vesting	Issuer			87	09/29/2023	Compensation
Common	10/02/2023	Restricted Stock Vesting	Issuer			91	10/02/2023	Compensation
Common	10/03/2023	Restricted Stock Vesting	Issuer			85	10/03/2023	Compensation
Common	11/01/2023	Restricted Stock Vesting	Issuer			110	11/01/2023	Compensation
Common	01/02/2024	Restricted Stock Vesting	Issuer			46	01/02/2024	Compensation
Common	01/03/2024	Restricted Stock Vesting	Issuer			49	01/03/2024	Compensation
Common	01/04/2024	Restricted Stock vesting	Issuer			47	01/04/2024	Compensation
Common	04/01/2024	Restricted Stock Vesting	Issuer			137	04/01/2024	Compensation
Common	05/24/2024	Stock Option Exercise	Issuer			591	05/24/2024	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
Patrick Willcocks 3 Orchard Place London X0 SW1H 0BF	Common	04/02/2025	532	7346.03

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 filer intends to sell 3,000 common shares.

What is the total market value of the proposed sale?

The aggregate market value is approximately US $110,700.

When is the expected sale date for the shares?

The shares are planned to be sold on or about 23 June 2025.

What percentage of Arqit Quantum’s outstanding shares does the sale represent?

Roughly 0.026% of the 11,545,354 shares outstanding.

Which broker will handle the transaction?

The broker of record is Fidelity Brokerage Services LLC.

Were any shares sold recently by the same insider?

Yes, 532 shares were sold on 2 April 2025 for US $7,346.