[144] Arqit Quantum Inc. SEC Filing

Rhea-AI Filing Summary

Arqit Quantum Inc. insider Patrick Willcocks filed a Form 144 proposing to sell 1,353 restricted common shares that vested on 10/02/2025, with an aggregate market value of $67,893.13 and an approximate sale date of 10/03/2025. The filing lists the broker as Fidelity Brokerage Services LLC on NASDAQ. The notice also discloses four prior sales by the same individual within the past three months totaling 6,709 shares for aggregate gross proceeds of $315,463. + (individual sales: 373 on 07/07/2025, 2,000 on 07/18/2025, 3,000 on 07/21/2025, and 1,336 on 10/02/2025).

Positive

• Form 144 filed for proposed sale, satisfying SEC disclosure requirements
• Acquisition source disclosed as Restricted Stock Vesting on 10/02/2025
• Broker identified as Fidelity Brokerage Services LLC and exchange as NASDAQ

Negative

• Recent insider sales total 6,709 shares in past three months for ~$315,463
• Proposed sale the day after vesting (vested 10/02/2025, sale ~10/03/2025)

Insights

Insider Transactions Analyst

TL;DR: Insider plans to sell 1,353 vested shares (≈$67,893) via Fidelity on NASDAQ.

The Form 144 shows the shares were acquired through restricted stock vesting on 10/02/2025 and the proposed sale date is 10/03/2025. This is a routine disclosure required when insiders propose public sales.

The filing also lists four prior sales by the same person in the past three months totaling 6,709 shares for gross proceeds of about $315,463, which provides clear transaction history over the recent quarter.

Securities Compliance Specialist

TL;DR: Filing properly discloses broker, acquisition nature, and representation about material non-public information.

The notice names Fidelity Brokerage Services LLC as broker and includes the required representation that the seller does not possess undisclosed material adverse information. The transaction source is explicitly stated as compensation for restricted stock vesting.

No other compliance exceptions or alternative trading-plan dates are disclosed in the form.

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	1353	67893.13	11545354	10/03/2025	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	10/02/2025	Restricted Stock Vesting	Issuer			1353	10/02/2025	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	12327.72
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
Patrick Willcocks 3 Orchard Place London X0 SW1H 0BF	Common	10/02/2025	1336	57596.30

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 Form 144 for ARQQ report?

The Form 144 reports a proposed sale of 1,353 common shares (aggregate market value $67,893.13) with an approximate sale date of 10/03/2025 via Fidelity on NASDAQ.

Who is selling the shares reported on the Form 144?

The seller named in related transactions is Patrick Willcocks; the filing shows the 1,353 shares were acquired by restricted stock vesting.

Were there other recent insider sales for ARQQ?

Yes. The filing lists four sales by the same person in the past three months totaling 6,709 shares for gross proceeds of about $315,463 on dates 07/07/2025, 07/18/2025, 07/21/2025, and 10/02/2025.

What is the acquisition source and payment nature for the shares to be sold?

The shares were acquired on 10/02/2025 through Restricted Stock Vesting and the nature of payment is listed as Compensation.

Which broker and exchange are named for the proposed sale?

The broker is Fidelity Brokerage Services LLC (900 Salem Street, Smithfield RI) and the exchange is NASDAQ.