UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 6-K
REPORT OF FOREIGN
PRIVATE ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16
UNDER THE SECURITIES EXCHANGE ACT OF 1934
For the month of October 2025
Commission File Number: 001-40777
ARQIT QUANTUM INC.
(Exact name of registrant as specified in its
charter)
1st Floor, 3 Orchard Place
London, SW1H 0BF
United Kingdom
(Address of principal executive office)
Indicate by check mark whether the registrant
files or will file annual reports under cover of Form 20-F or Form 40-F:
Form 20-F
x Form 40-F ¨
EXPLANATORY NOTE
On October 9, 2025 Arqit
Quantum Inc. (the “Company”) issued a press release entitled “Announces Select Preliminary Financial Results
for the Second Half and Full Fiscal Year 2025,” in which the Company reported select unaudited preliminary financial results for
the six months and year ended September 30, 2025. A copy of that press release is furnished as Exhibit 99.1 hereto.
The
information furnished in this Report of Foreign Private Issuer on Form 6-K, including the information contained in Exhibit 99.1,
shall not be deemed to be “filed” for the purposes of Section 18 of the Exchange Act, or otherwise subject to the liabilities
of that section, and shall not be deemed to be incorporated by reference into any filing under the Securities Act of 1933, as amended,
or the Exchange Act, except as shall be expressly set forth by a specific reference in such filing.
EXHIBIT INDEX
Exhibit
No. |
|
Description |
| 99.1 |
|
Press release of Arqit Quantum Inc., dated October 9,
2025. |
SIGNATURES
Pursuant to the requirements
of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto
duly authorized.
| ARQIT QUANTUM INC. |
|
| |
|
| By: |
/s/ Andrew Leaver |
|
| Name: |
Andrew Leaver |
|
| Title: |
Chief Executive Officer |
|
Date: October 9, 2025
