ARQQ files Rule 144 for 1,790 vested shares

ARQQ submitted a Rule 144 notice reporting 1,790 shares of Common Stock to be sold following restricted stock vesting dated 04/01/2026.

Rhea-AI Filing Summary

ARQQ submitted a Rule 144 notice reporting 1,790 shares of Common Stock to be sold following restricted stock vesting dated 04/01/2026. The filing lists Fidelity Brokerage Services LLC as the broker. The filing also lists prior open-market sales by Patrick Willcocks of 1,913; 3,000; and 520 shares on 01/02/2026, 01/06/2026, and 03/04/2026, respectively. Shares outstanding are shown as 15,291,767 as of 04/02/2026.

Key Figures

Proposed resale under Rule 144: 1,790 shares Shares outstanding: 15,291,767 shares Prior sale by Patrick Willcocks: 1,913 shares +2 more

5 metrics

Proposed resale under Rule 144 1,790 shares restricted stock vesting dated 04/01/2026

Shares outstanding 15,291,767 shares as of 04/02/2026

Prior sale by Patrick Willcocks 1,913 shares sale on 01/02/2026, proceeds $43,735.77

Prior sale by Patrick Willcocks 3,000 shares sale on 01/06/2026, proceeds $84,000.00

Prior sale by Patrick Willcocks 520 shares sale on 03/04/2026, proceeds $8,526.44

Key Terms

Restricted Stock Vesting, Rule 144, Fidelity Brokerage Services LLC

3 terms

Restricted Stock Vesting financial

"Common | 04/01/2026 | Restricted Stock Vesting"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Rule 144 regulatory

"144: Securities To Be Sold"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Fidelity Brokerage Services LLC other

"Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does ARQQ's Form 144 report about the 1,790 shares?

It reports 1,790 shares of Common Stock to be sold following restricted stock vesting dated 04/01/2026. The filing lists the sale method as a Rule 144 notice and names Fidelity Brokerage Services LLC as broker.

Who is the broker listed in the ARQQ Form 144 filing?

Fidelity Brokerage Services LLC is listed as the broker, with an address at 900 Salem Street, Smithfield, RI. The filing shows the broker in connection with the proposed 1,790-share sale.

What prior sales by Patrick Willcocks are shown in ARQQ's filing?

The filing lists prior sales by Patrick Willcocks of 1,913 shares on 01/02/2026, 3,000 shares on 01/06/2026, and 520 shares on 03/04/2026, with the cash amounts shown alongside each sale.

How many ARQQ shares were outstanding per the filing?

The filing shows 15,291,767 shares outstanding as of 04/02/2026. That figure is presented on the same page as the securities and broker information in the Form 144 excerpt.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/02/2026 - 04:28 PM EDT Learn about SEC filing dates

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	0001967211
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Arqit Quantum Inc.
SEC File Number	001-40777
Address of Issuer	3 ORCHARD PLACE LONDON UNITED KINGDOM SW1H 0BF
Phone	44 203 91 70155
Name of Person for Whose Account the Securities are To Be Sold	Willcocks Patrick
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	Officer

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	1790	23853.72	15291767	04/02/2026	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	04/01/2026	Restricted Stock Vesting	Issuer			1790	04/01/2026	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	01/02/2026	1913	43735.77
Patrick Willcocks 3 Orchard Place London X0 SW1H 0BF	Common	01/06/2026	3000	84000.00
Patrick Willcocks 3 Orchard Place London X0 SW1H 0BF	Common	03/04/2026	520	8526.44

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	04/02/2026
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	/s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Patrick Willcocks
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)