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 2026
Commission File Number: 001-40777
ARQIT QUANTUM INC.
(Exact name of registrant as specified in its
charter)
2nd 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 8, 2026 Arqit
Quantum Inc. (the “Company”) issued a press release entitled “Announces Select Preliminary Financial Results
for the Second Half and Full Fiscal Year 2026,” in which the Company reported select unaudited preliminary financial results for
the six months and year ended September 30, 2026. 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 8, 2026. |
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 8, 2026
Exhibit 99.1
Arqit Quantum Inc.
Announces Select Preliminary Financial Results for the Second Half and Full Fiscal Year 2026
London, UK – 8 October 2026
Arqit Quantum Inc. (Nasdaq: ARQQ) (“Arqit”),
a global leader in quantum-safe encryption, announces select preliminary financial results for the second half and full fiscal year 2026.
Based on preliminary unaudited results, management
expects revenue for the second half period ended 30 September 2026 of approximately $355,000 to $380,000. For the full fiscal year ended
30 September 2026, revenue is expected to be $975,000 to $1,000,000. Cash and cash equivalents were approximately $51 million as of 30
September 2026.
Revenue for the second half period ended 30 September
2026 was down as compared to revenue of $463,000 for the same period in fiscal year 2025. Revenue for the full fiscal ended 30 September
2026 compares favourably to revenue of $530,000 for fiscal year 2025.
Growth in revenue for fiscal year 2026 versus
fiscal year 2025 resulted from but was not limited to:
| · | Revenue recognition associated with delivery under contracts signed prior to the commencement of the period;
and |
| · | Revenue recognition associated with 7 new contracts signed in the period. |
| · | Revenue for the second half of fiscal year 2026 was adversely affected by cessation of revenue recognition
under a material contract with a customer in the Middle East. The customer’s ability to fulfill its contractual obligations has
been impacted by, but not limited to, geopolitical events in the region. |
Recognition of revenue under existing contracts
is subject to a number of factors including, amongst others, the successful delivery of our products under the terms of those contracts,
and the assumption that customers will not cancel, delay or amend the terms their contracts.
Notable revenue related events during the second
half of the fiscal period or immediately following the close of the period include:
| · | Arqit signed 3 contracts in the second half of the fiscal period for Encryption Intelligence, Arqit’s
automated cryptographic inventory solution, which enables continuous discovery and risk prioritisation to help governments
and enterprises plan and execute migration to post-quantum cryptography. Revenue recognition under the contracts either began late
in the second half of the fiscal period or will commence in the first quarter of fiscal year 2027. Encryption Intelligence launched commercialization
earlier this year. The company believes Encryption Intelligence will be an important driver of customer engagement in fiscal year 2027. |
| · | Renewed and or expanded two contracts in the second half of the fiscal year 2026. |
| · | On 6 October 2026, following the end of fiscal year 2026, Arqit signed a contract as part of a winning
bidding consortium to provide secure networking services to NATO. Services will be delivered as a 1 year contract with 2 annual renewal
options. |
The preliminary financial results discussed in
this press release are based on management’s preliminary unaudited analysis of financial results for the second half and full fiscal
year 2026. As of the date of this press release, the Company has not completed its financial statement reporting and the Company’s
independent accounting firm has not reviewed the preliminary financial data discussed in this press release. During the course of the
Company’s second half and full fiscal year closing procedures and independent accountant review process, including the finalization
of its financial statements for and as of the period ended 30 September 2026, the Company may identify items that would require it to
make adjustments, which may be material to the information presented above. As a result, the estimates above constitute forward-looking
information and are subject to risks and uncertainties, including possible adjustments to preliminary results.
Conference Call
The Company expects to report complete second
half and full year results in December 2026 followed by a conference call. Additional details, including the date and time of the conference
call, will be provided in advance of the event.
About Arqit
Arqit Quantum Inc. (Nasdaq: ARQQ) secures the
world’s most critical data with quantum-safe encryption software. Simple, scalable, and compliant, its products integrate with existing infrastructure,
and requires no rip and replace of hardware.
Arqit provides a complete “Detect, Protect, Comply”
solution for governments and enterprises that detects and inventories cryptographic assets, protects data, ensures compliance, and safeguards
transition to the post-quantum era.
Arqit’s primary product offerings are
Encryption Intelligence and NetworkSecure™. Encryption Intelligence detects cryptographic exposure, identifies vulnerabilities,
and maps dependencies. NetworkSecure™ protects data in transit with provably secure post-quantum cryptography and contributes
to establishment of confidential compute environments for complete data sovereignty.
Arqit is an IDC Innovator for Post-Quantum Cryptography
(2024) and a multi-award-winner in quantum-safe security. For more information, visit www.arqitgroup.com.
Media relations enquiries:
Arqit: pr@arqit.uk
Investor relations enquiries:
Arqit: investorrelations@arqit.uk
Caution About Forward-Looking Statements
This communication includes forward-looking statements
within the meaning of the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical facts,
may be forward-looking statements. These forward-looking statements are based on Arqit’s expectations and beliefs concerning future
events and involve risks and uncertainties that may cause actual results to differ materially from current expectations. These factors
are difficult to predict accurately and may be beyond Arqit’s control. Forward-looking statements in this communication or elsewhere
speak only as of the date made. New uncertainties and risks arise from time to time, and it is impossible for Arqit to predict these events
or how they may affect it. Except as required by law, Arqit does not have any duty to, and does not intend to, update or revise the forward-looking
statements in this communication or elsewhere after the date this communication is issued. In light of these risks and uncertainties,
investors should keep in mind that results, events or developments discussed in any forward-looking statement made in this communication
may not occur. Uncertainties and risk factors that could affect Arqit’s future performance and cause results to differ from the
forward-looking statements in this release include, but are not limited to: (i) the outcome of any legal proceedings that may be instituted
against Arqit, (ii) the ability to maintain the listing of Arqit’s securities on a national securities exchange, (iii) changes in
the competitive and regulated industries in which Arqit operates, variations in operating performance across competitors and changes in
laws and regulations affecting Arqit’s business, (iv) the ability to implement business plans, forecasts, and other expectations,
and identify and realise additional opportunities, (v) the potential inability of Arqit to successfully deliver its operational technology,
(vi) the risk of interruption or failure of Arqit’s information technology and communications system, (vii) the enforceability of
Arqit’s intellectual property, (viii) market and other conditions, and (ix) other risks and uncertainties set forth in the sections
entitled “Risk Factors” and “Cautionary Note Regarding Forward-Looking Statements” in Arqit’s annual report
on Form 20-F (the “Form 20-F”), filed with the U.S. Securities and Exchange Commission (the “SEC”) on 9 December
2025 and in subsequent filings with the SEC. While the list of factors discussed above and in the Form 20-F and other SEC filings are
considered representative, no such list should be considered to be a complete statement of all potential risks and uncertainties. Unlisted
factors may present significant additional obstacles to the realisation of forward-looking statements.
