Nicholas William Nilan - 18 Mar 2026 Form 3 Insider Report for Arqit Quantum Inc. (ARQQ)

Role
General Manager-US
Signature
/s/ Nicholas Pointon, as Attorney-in-Fact
Issuer symbol
ARQQ
Transactions as of
18 Mar 2026
Net transactions value
$0
Form type
3
Filing time
18 Mar 2026, 11:07:33 UTC
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Nilan Nicholas William General Manager-US C/O ARQIT INC., 1209 ORANGE STREET, WILMINGTON /s/ Nicholas Pointon, as Attorney-in-Fact 18 Mar 2026 0002120006

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
holding ARQQ Restricted Stock Units 18 Mar 2026 Ordinary Shares 8,631 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Each restricted stock unit ("RSU") represents a contingent right to receive one ARQQ ordinary share. 2,879 RSUs vest on October 1, 2026 and the remaining RSUs vest quarterly in equal installments on January 1, April 1, July 1, and October 1, 2027, and January 1, April 1, July 1, and October 1, 2028.

Remarks:

Due to the issuer's status as a foreign private issuer pursuant to Rule 3a12-3(b) under the Securities Exchange Act of 1934 (the "Act"), the reporting person's transactions in the issuer's securities are exempt from Sections 16(b) and 16(c) of the Act. Ex. 24 - Power of Attorney