<?xml version="1.0" encoding="UTF-8" ?><!-- Generated on Thu, 11 Jun 2026 02:04:54 -0400--><rss version="2.0">
    <channel>
        <title>Castle Biosciences, Inc. (CSTL) SEC Filings</title>
        <link>https://ir.castlebiosciences.com/sec-filings/section-16-filings/rss</link>
        <description>Castle Biosciences, Inc. (CSTL) - Section 16 Filings</description>
        <language>en-us</language>
                                            <image>
                <url>https://d1io3yog0oux5.cloudfront.net/castlebiosciences/files/theme/images/logo-sm.png</url>
                <title>Castle Biosciences, 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[4]]></description>
                <link>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-040260/0001628280-26-040260.pdf</link>
                <pubDate>Wed, 03 Jun 26 00:00:00 -0400</pubDate>
                <guid>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-040260/0001628280-26-040260.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[4]]></description>
                <link>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-039569/0001628280-26-039569.pdf</link>
                <pubDate>Mon, 01 Jun 26 00:00:00 -0400</pubDate>
                <guid>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-039569/0001628280-26-039569.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[4]]></description>
                <link>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-039567/0001628280-26-039567.pdf</link>
                <pubDate>Mon, 01 Jun 26 00:00:00 -0400</pubDate>
                <guid>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-039567/0001628280-26-039567.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[4]]></description>
                <link>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-039565/0001628280-26-039565.pdf</link>
                <pubDate>Mon, 01 Jun 26 00:00:00 -0400</pubDate>
                <guid>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-039565/0001628280-26-039565.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[4]]></description>
                <link>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-039562/0001628280-26-039562.pdf</link>
                <pubDate>Mon, 01 Jun 26 00:00:00 -0400</pubDate>
                <guid>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-039562/0001628280-26-039562.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[4]]></description>
                <link>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-039560/0001628280-26-039560.pdf</link>
                <pubDate>Mon, 01 Jun 26 00:00:00 -0400</pubDate>
                <guid>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-039560/0001628280-26-039560.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[4]]></description>
                <link>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-039554/0001628280-26-039554.pdf</link>
                <pubDate>Mon, 01 Jun 26 00:00:00 -0400</pubDate>
                <guid>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-039554/0001628280-26-039554.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[4]]></description>
                <link>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001447362-26-000013/0001447362-26-000013.pdf</link>
                <pubDate>Mon, 01 Jun 26 00:00:00 -0400</pubDate>
                <guid>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001447362-26-000013/0001447362-26-000013.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[4]]></description>
                <link>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001447362-26-000011/0001447362-26-000011.pdf</link>
                <pubDate>Wed, 27 May 26 00:00:00 -0400</pubDate>
                <guid>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001447362-26-000011/0001447362-26-000011.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[4 - Statement of changes in beneficial ownership of securities]]></title>
                <description><![CDATA[4]]></description>
                <link>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-038476/0001628280-26-038476.pdf</link>
                <pubDate>Wed, 27 May 26 00:00:00 -0400</pubDate>
                <guid>https://ir.castlebiosciences.com/sec-filings/all-sec-filings/content/0001628280-26-038476/0001628280-26-038476.pdf</guid>
                                                                            </item>
            </channel>
</rss>