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        <title>Atara Biotherapeutics (ATRA) SEC Filings</title>
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        <description>Atara Biotherapeutics (ATRA) - Quarterly Reports</description>
        <language>en-us</language>
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                <title><![CDATA[10-Q - Quarterly report [Sections 13 or 15(d)]]]></title>
                <description><![CDATA[6 Related Documents: 10-Q, EX-10.1, EX-10.2, EX-31.1, EX-31.2, EX-32.1]]></description>
                <link>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0001193125-25-276219/0001193125-25-276219.pdf</link>
                <pubDate>Wed, 12 Nov 25 09:11:58 -0500</pubDate>
                <guid>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0001193125-25-276219/0001193125-25-276219.pdf</guid>
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                <title><![CDATA[10-Q - Quarterly report [Sections 13 or 15(d)]]]></title>
                <description><![CDATA[5 Related Documents: 10-Q, EX-10.1, EX-31.1, EX-31.2, EX-32.1]]></description>
                <link>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-25-106550/0000950170-25-106550.pdf</link>
                <pubDate>Mon, 11 Aug 25 16:11:11 -0400</pubDate>
                <guid>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-25-106550/0000950170-25-106550.pdf</guid>
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                <title><![CDATA[10-Q - Quarterly report [Sections 13 or 15(d)]]]></title>
                <description><![CDATA[6 Related Documents: 10-Q, EX-10.1, EX-10.2, EX-31.1, EX-31.2, EX-32.1]]></description>
                <link>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-25-072040/0000950170-25-072040.pdf</link>
                <pubDate>Thu, 15 May 25 08:46:06 -0400</pubDate>
                <guid>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-25-072040/0000950170-25-072040.pdf</guid>
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                    <item>
                <title><![CDATA[10-Q - Quarterly report pursuant to Section 13 or 15(d)]]></title>
                <description><![CDATA[4 Related Documents: 10-Q, EX-31.1, EX-31.2, EX-32.1]]></description>
                <link>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-24-125389/0000950170-24-125389.pdf</link>
                <pubDate>Tue, 12 Nov 24 16:12:18 -0500</pubDate>
                <guid>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-24-125389/0000950170-24-125389.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[10-Q - Quarterly report pursuant to Section 13 or 15(d)]]></title>
                <description><![CDATA[6 Related Documents: 10-Q, EX-10.1, EX-10.2, EX-31.1, EX-31.2, EX-32.1]]></description>
                <link>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-24-095533/0000950170-24-095533.pdf</link>
                <pubDate>Mon, 12 Aug 24 17:11:27 -0400</pubDate>
                <guid>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-24-095533/0000950170-24-095533.pdf</guid>
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                    <item>
                <title><![CDATA[10-Q - Quarterly report pursuant to Section 13 or 15(d)]]></title>
                <description><![CDATA[5 Related Documents: 10-Q, EX-10.1, EX-31.1, EX-31.2, EX-32.1]]></description>
                <link>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-24-056959/0000950170-24-056959.pdf</link>
                <pubDate>Thu, 09 May 24 16:20:07 -0400</pubDate>
                <guid>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-24-056959/0000950170-24-056959.pdf</guid>
                                                                            </item>
                    <item>
                <title><![CDATA[10-Q - Quarterly report pursuant to Section 13 or 15(d)]]></title>
                <description><![CDATA[6 Related Documents: 10-Q, EX-10.1, EX-10.2, EX-31.1, EX-31.2, EX-32.1]]></description>
                <link>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-23-057147/0000950170-23-057147.pdf</link>
                <pubDate>Wed, 01 Nov 23 08:41:37 -0400</pubDate>
                <guid>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-23-057147/0000950170-23-057147.pdf</guid>
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                    <item>
                <title><![CDATA[10-Q - Quarterly report pursuant to Section 13 or 15(d)]]></title>
                <description><![CDATA[4 Related Documents: 10-Q, EX-31.1, EX-31.2, EX-32.1]]></description>
                <link>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-23-039820/0000950170-23-039820.pdf</link>
                <pubDate>Tue, 08 Aug 23 16:24:10 -0400</pubDate>
                <guid>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-23-039820/0000950170-23-039820.pdf</guid>
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                    <item>
                <title><![CDATA[10-Q - Quarterly report pursuant to Section 13 or 15(d)]]></title>
                <description><![CDATA[5 Related Documents: 10-Q, EX-10, EX-31, EX-31, EX-32]]></description>
                <link>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-23-018820/0000950170-23-018820.pdf</link>
                <pubDate>Mon, 08 May 23 16:16:41 -0400</pubDate>
                <guid>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-23-018820/0000950170-23-018820.pdf</guid>
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                    <item>
                <title><![CDATA[10-Q - Quarterly report pursuant to Section 13 or 15(d)]]></title>
                <description><![CDATA[7 Related Documents: 10-Q, EX-10.1, EX-10.2, EX-10.3, EX-31.1, EX-31.2, EX-32.1]]></description>
                <link>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-22-023248/0000950170-22-023248.pdf</link>
                <pubDate>Tue, 08 Nov 22 16:26:58 -0500</pubDate>
                <guid>https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000950170-22-023248/0000950170-22-023248.pdf</guid>
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