<?xml version="1.0" encoding="UTF-8" ?><!-- Generated on Sun, 26 Jul 2026 14:39:27 -0400--><rss version="2.0">
    <channel>
        <title>Arqit Quantum Inc. (ARQQ) SEC Filings</title>
        <link>https://ir.arqit.uk/sec-filings/all-sec-filings/rss</link>
        <description>Arqit Quantum Inc. (ARQQ) - All SEC Filings</description>
        <language>en-us</language>
                                            <image>
                <url>https://d1io3yog0oux5.cloudfront.net/_bfec20c1f7c775e541953fb67a4e7952/arqit/files/theme/images/logo-sm.png</url>
                <title>Arqit Quantum Inc. Logo</title>
                <link></link>
            </image>
                <generator>Equisolve Investor Relations Suite</generator>
        
                            <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[2 Related Documents: 4, EX-24]]></description>
                <link>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001859690-26-000160/0001859690-26-000160.pdf</link>
                <pubDate>Tue, 21 Jul 26 00:00:00 -0400</pubDate>
                <guid>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001859690-26-000160/0001859690-26-000160.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[2 Related Documents: 4, EX-24]]></description>
                <link>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001859690-26-000154/0001859690-26-000154.pdf</link>
                <pubDate>Tue, 21 Jul 26 00:00:00 -0400</pubDate>
                <guid>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001859690-26-000154/0001859690-26-000154.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[2 Related Documents: 4, EX-24]]></description>
                <link>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001859690-26-000153/0001859690-26-000153.pdf</link>
                <pubDate>Tue, 21 Jul 26 00:00:00 -0400</pubDate>
                <guid>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001859690-26-000153/0001859690-26-000153.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[2 Related Documents: 4, EX-24]]></description>
                <link>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001859690-26-000148/0001859690-26-000148.pdf</link>
                <pubDate>Fri, 17 Jul 26 00:00:00 -0400</pubDate>
                <guid>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001859690-26-000148/0001859690-26-000148.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[2 Related Documents: 4, EX-24]]></description>
                <link>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001859690-26-000147/0001859690-26-000147.pdf</link>
                <pubDate>Fri, 17 Jul 26 00:00:00 -0400</pubDate>
                <guid>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001859690-26-000147/0001859690-26-000147.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[2 Related Documents: 4, EX-24]]></description>
                <link>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001859690-26-000146/0001859690-26-000146.pdf</link>
                <pubDate>Fri, 17 Jul 26 00:00:00 -0400</pubDate>
                <guid>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001859690-26-000146/0001859690-26-000146.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[4]]></description>
                <link>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001104659-26-083095/0001104659-26-083095.pdf</link>
                <pubDate>Mon, 13 Jul 26 00:00:00 -0400</pubDate>
                <guid>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001104659-26-083095/0001104659-26-083095.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[4]]></description>
                <link>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001104659-26-082255/0001104659-26-082255.pdf</link>
                <pubDate>Thu, 09 Jul 26 00:00:00 -0400</pubDate>
                <guid>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001104659-26-082255/0001104659-26-082255.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[4]]></description>
                <link>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001104659-26-081290/0001104659-26-081290.pdf</link>
                <pubDate>Tue, 07 Jul 26 00:00:00 -0400</pubDate>
                <guid>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001104659-26-081290/0001104659-26-081290.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[2 Related Documents: 4, EX-24]]></description>
                <link>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001859690-26-000142/0001859690-26-000142.pdf</link>
                <pubDate>Mon, 06 Jul 26 00:00:00 -0400</pubDate>
                <guid>https://ir.arqit.ukhttps://ir.arqit.uk/sec-filings/all-sec-filings/content/0001859690-26-000142/0001859690-26-000142.pdf</guid>
                                                                            </item>
            </channel>
</rss>