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   <title>Form  4          Atara Biotherapeutics,    For: Mar 02  Filed by: Nguyen AnhCo</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++4++++++++++Atara+Biotherapeutics%2C++++For%3A+Mar+02++Filed+by%3A+Nguyen+AnhCo/26111665.html</link>
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   <pubDate>Wed, 04 Mar 2026 16:28:00 -0500</pubDate>
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   <title>Form  4          Atara Biotherapeutics,    For: Mar 02  Filed by: Nguyen AnhCo</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++4++++++++++Atara+Biotherapeutics%2C++++For%3A+Mar+02++Filed+by%3A+Nguyen+AnhCo/26111665.html</link>
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   <title>Form  4          Atara Biotherapeutics,    For: Mar 02  Filed by: Grant-Huerta Yanina</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++4++++++++++Atara+Biotherapeutics%2C++++For%3A+Mar+02++Filed+by%3A+Grant-Huerta+Yanina/26111671.html</link>
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   <title>Form  4          Atara Biotherapeutics,    For: Mar 02  Filed by: Grant-Huerta Yanina</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++4++++++++++Atara+Biotherapeutics%2C++++For%3A+Mar+02++Filed+by%3A+Grant-Huerta+Yanina/26111671.html</link>
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   <title>Form  8-K        Atara Biotherapeutics,    For: Mar 03</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++8-K++++++++Atara+Biotherapeutics%2C++++For%3A+Mar+03/26097194.html</link>
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   <pubDate>Tue, 03 Mar 2026 08:30:00 -0500</pubDate>
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   <title>Form  8-K        Atara Biotherapeutics,    For: Mar 03</title>
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   <pubDate>Tue, 03 Mar 2026 08:30:00 -0500</pubDate>
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   <title>Atara partner requests FDA meeting on rejected therapy application</title>
   <link>http://www.streetinsider.com/Corporate+News/Atara+partner+requests+FDA+meeting+on+rejected+therapy+application/26096956.html</link>
   <description>&lt;p&gt;Atara Biotherapeutics Inc. (NASDAQ: ATRA) announced that its partner Pierre Fabre Pharmaceuticals has requested a Type A meeting with the FDA regarding tabelecleucel, following a Complete Response Letter dated January 9, 2026.&lt;/p&gt;&lt;p&gt;Pierre Fabre Pharmaceuticals submitted a briefing book to the FDA addressing points from the rejection letter, according to a press release from Atara. The briefing book provides additional context and clarification that the ALLELE study was adequate, well-controlled, and sufficient to support the tabelecleucel Biologics License Application.&lt;/p&gt;&lt;p&gt;The briefing book includes summaries of updated, longer-term efficacy data from ALLELE, additional supportive data from the tabelecleucel development program, and post-marketing data</description>
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   <pubDate>Tue, 03 Mar 2026 08:06:17 -0500</pubDate>
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   <title>Atara partner requests FDA meeting on rejected therapy application</title>
   <link>http://www.streetinsider.com/FDA/Atara+partner+requests+FDA+meeting+on+rejected+therapy+application/26096956.html</link>
   <description>&lt;p&gt;Atara Biotherapeutics Inc. (NASDAQ: ATRA) announced that its partner Pierre Fabre Pharmaceuticals has requested a Type A meeting with the FDA regarding tabelecleucel, following a Complete Response Letter dated January 9, 2026.&lt;/p&gt;&lt;p&gt;Pierre Fabre Pharmaceuticals submitted a briefing book to the FDA addressing points from the rejection letter, according to a press release from Atara. The briefing book provides additional context and clarification that the ALLELE study was adequate, well-controlled, and sufficient to support the tabelecleucel Biologics License Application.&lt;/p&gt;&lt;p&gt;The briefing book includes summaries of updated, longer-term efficacy data from ALLELE, additional supportive data from the tabelecleucel development program, and post-marketing data</description>
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   <pubDate>Tue, 03 Mar 2026 08:06:17 -0500</pubDate>
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   <title>Atara Biotherapeutics Provides Regulatory Update on Tabelecleucel</title>
   <link>http://www.streetinsider.com/Press+Releases/Atara+Biotherapeutics+Provides+Regulatory+Update+on+Tabelecleucel/26096936.html</link>
   <description>
&lt;p&gt;    THOUSAND OAKS, Calif.--(BUSINESS WIRE)--
&lt;a target=&quot;_blank&quot; rel=&quot;nofollow&quot; href=&quot;https://cts.businesswire.com/ct/CT?id=smartlink&amp;amp;url=https%3A%2F%2Fwww.atarabio.com%2F&amp;amp;esheet=54436953&amp;amp;newsitemid=20260303134105&amp;amp;lan=en-US&amp;amp;anchor=Atara+Biotherapeutics%2C+Inc.&amp;amp;index=1&amp;amp;md5=d19a4b884481dc931187be8f7a11c502&quot; shape=&quot;rect&quot;&gt;Atara Biotherapeutics, Inc.&lt;/a&gt; (Nasdaq: ATRA), a leader in T-cell immunotherapy, leveraging its novel allogeneic Epstein-Barr virus (EBV) T-cell platform to develop transformative therapies for patients with cancer and autoimmune diseases, today announced that its partner Pierre Fabre Pharmaceuticals (PFP) has submitted a request to the FDA for a Type A meeting.

&lt;/p&gt;&lt;p&gt;
Pierre Fabre Pharmaceuticals, in partnership with Atara, submitted a briefing book to the FDA addressing the points from the Complete Response Letter dated January 9, 2026, providing additional context and clarification that the ALLELE study was adequate, well-controlled, and</description>
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   <pubDate>Tue, 03 Mar 2026 08:05:00 -0500</pubDate>
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   <title>Atara Biotherapeutics Provides Regulatory Update on Tabelecleucel</title>
   <link>http://www.streetinsider.com/Press+Releases/Atara+Biotherapeutics+Provides+Regulatory+Update+on+Tabelecleucel/26096936.html</link>
   <description>
&lt;p&gt;    THOUSAND OAKS, Calif.--(BUSINESS WIRE)--
&lt;a target=&quot;_blank&quot; rel=&quot;nofollow&quot; href=&quot;https://cts.businesswire.com/ct/CT?id=smartlink&amp;amp;url=https%3A%2F%2Fwww.atarabio.com%2F&amp;amp;esheet=54436953&amp;amp;newsitemid=20260303134105&amp;amp;lan=en-US&amp;amp;anchor=Atara+Biotherapeutics%2C+Inc.&amp;amp;index=1&amp;amp;md5=d19a4b884481dc931187be8f7a11c502&quot; shape=&quot;rect&quot;&gt;Atara Biotherapeutics, Inc.&lt;/a&gt; (Nasdaq: ATRA), a leader in T-cell immunotherapy, leveraging its novel allogeneic Epstein-Barr virus (EBV) T-cell platform to develop transformative therapies for patients with cancer and autoimmune diseases, today announced that its partner Pierre Fabre Pharmaceuticals (PFP) has submitted a request to the FDA for a Type A meeting.

&lt;/p&gt;&lt;p&gt;
Pierre Fabre Pharmaceuticals, in partnership with Atara, submitted a briefing book to the FDA addressing the points from the Complete Response Letter dated January 9, 2026, providing additional context and clarification that the ALLELE study was adequate, well-controlled, and</description>
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   <pubDate>Tue, 03 Mar 2026 08:05:00 -0500</pubDate>
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   <title>Atara Biotherapeutics Provides Regulatory Update on Tabelecleucel</title>
   <link>http://www.streetinsider.com/Business+Wire/Atara+Biotherapeutics+Provides+Regulatory+Update+on+Tabelecleucel/26096936.html</link>
   <description>
&lt;p&gt;    THOUSAND OAKS, Calif.--(BUSINESS WIRE)--
&lt;a target=&quot;_blank&quot; rel=&quot;nofollow&quot; href=&quot;https://cts.businesswire.com/ct/CT?id=smartlink&amp;amp;url=https%3A%2F%2Fwww.atarabio.com%2F&amp;amp;esheet=54436953&amp;amp;newsitemid=20260303134105&amp;amp;lan=en-US&amp;amp;anchor=Atara+Biotherapeutics%2C+Inc.&amp;amp;index=1&amp;amp;md5=d19a4b884481dc931187be8f7a11c502&quot; shape=&quot;rect&quot;&gt;Atara Biotherapeutics, Inc.&lt;/a&gt; (Nasdaq: ATRA), a leader in T-cell immunotherapy, leveraging its novel allogeneic Epstein-Barr virus (EBV) T-cell platform to develop transformative therapies for patients with cancer and autoimmune diseases, today announced that its partner Pierre Fabre Pharmaceuticals (PFP) has submitted a request to the FDA for a Type A meeting.

&lt;/p&gt;&lt;p&gt;
Pierre Fabre Pharmaceuticals, in partnership with Atara, submitted a briefing book to the FDA addressing the points from the Complete Response Letter dated January 9, 2026, providing additional context and clarification that the ALLELE study was adequate, well-controlled, and</description>
   <guid isPermaLink="true">http://www.streetinsider.com/Business+Wire/Atara+Biotherapeutics+Provides+Regulatory+Update+on+Tabelecleucel/26096936.html</guid>
   <pubDate>Tue, 03 Mar 2026 08:05:00 -0500</pubDate>
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   <title>Atara Biotherapeutics Provides Regulatory Update on Tabelecleucel</title>
   <link>http://www.streetinsider.com/Business+Wire/Atara+Biotherapeutics+Provides+Regulatory+Update+on+Tabelecleucel/26096936.html</link>
   <description>
&lt;p&gt;    THOUSAND OAKS, Calif.--(BUSINESS WIRE)--
&lt;a target=&quot;_blank&quot; rel=&quot;nofollow&quot; href=&quot;https://cts.businesswire.com/ct/CT?id=smartlink&amp;amp;url=https%3A%2F%2Fwww.atarabio.com%2F&amp;amp;esheet=54436953&amp;amp;newsitemid=20260303134105&amp;amp;lan=en-US&amp;amp;anchor=Atara+Biotherapeutics%2C+Inc.&amp;amp;index=1&amp;amp;md5=d19a4b884481dc931187be8f7a11c502&quot; shape=&quot;rect&quot;&gt;Atara Biotherapeutics, Inc.&lt;/a&gt; (Nasdaq: ATRA), a leader in T-cell immunotherapy, leveraging its novel allogeneic Epstein-Barr virus (EBV) T-cell platform to develop transformative therapies for patients with cancer and autoimmune diseases, today announced that its partner Pierre Fabre Pharmaceuticals (PFP) has submitted a request to the FDA for a Type A meeting.

&lt;/p&gt;&lt;p&gt;
Pierre Fabre Pharmaceuticals, in partnership with Atara, submitted a briefing book to the FDA addressing the points from the Complete Response Letter dated January 9, 2026, providing additional context and clarification that the ALLELE study was adequate, well-controlled, and</description>
   <guid isPermaLink="true">http://www.streetinsider.com/Business+Wire/Atara+Biotherapeutics+Provides+Regulatory+Update+on+Tabelecleucel/26096936.html</guid>
   <pubDate>Tue, 03 Mar 2026 08:05:00 -0500</pubDate>
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   <title>Form  144        Atara Biotherapeutics,                 Filed by: Nguyen AnhCo</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++144++++++++Atara+Biotherapeutics%2C+++++++++++++++++Filed+by%3A+Nguyen+AnhCo/26094389.html</link>
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   <pubDate>Mon, 02 Mar 2026 18:26:00 -0500</pubDate>
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   <title>Form  144        Atara Biotherapeutics,                 Filed by: Nguyen AnhCo</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++144++++++++Atara+Biotherapeutics%2C+++++++++++++++++Filed+by%3A+Nguyen+AnhCo/26094389.html</link>
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   <pubDate>Mon, 02 Mar 2026 18:26:00 -0500</pubDate>
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   <title>Form  144        Atara Biotherapeutics,                 Filed by: Grant-Huerta Yanina</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++144++++++++Atara+Biotherapeutics%2C+++++++++++++++++Filed+by%3A+Grant-Huerta+Yanina/26094383.html</link>
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   <pubDate>Mon, 02 Mar 2026 18:24:00 -0500</pubDate>
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   <title>Form  144        Atara Biotherapeutics,                 Filed by: Grant-Huerta Yanina</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++144++++++++Atara+Biotherapeutics%2C+++++++++++++++++Filed+by%3A+Grant-Huerta+Yanina/26094383.html</link>
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   <pubDate>Mon, 02 Mar 2026 18:24:00 -0500</pubDate>
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   <title>Form  8-K        Atara Biotherapeutics,    For: Feb 20</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++8-K++++++++Atara+Biotherapeutics%2C++++For%3A+Feb+20/26039816.html</link>
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   <pubDate>Mon, 23 Feb 2026 08:29:00 -0500</pubDate>
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   <title>Form  8-K        Atara Biotherapeutics,    For: Feb 20</title>
   <link>http://www.streetinsider.com/SEC+Filings/Form++8-K++++++++Atara+Biotherapeutics%2C++++For%3A+Feb+20/26039816.html</link>
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   <pubDate>Mon, 23 Feb 2026 08:29:00 -0500</pubDate>
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   <title>Atara Biotherapeutics extends $9 million payment deadline to 2028</title>
   <link>http://www.streetinsider.com/Equity+Offerings/Atara+Biotherapeutics+extends+%249+million+payment+deadline+to+2028/26039572.html</link>
   <description>&lt;p&gt;Atara Biotherapeutics Inc. (NASDAQ: ATRA) announced it amended an agreement with HealthCare Royalty to extend the due date of a $9 million cash payment from June 30, 2026 to January 1, 2028.&lt;/p&gt;&lt;p&gt;The payment relates to a milestone in the company's commercialization agreement with Pierre Fabre Medicament for tabelecleucel, Atara's T-cell immunotherapy. The original purchase and sale agreement with HealthCare Royalty was signed in December 2022.&lt;/p&gt;&lt;p&gt;As part of the amendment, Atara issued a warrant to HealthCare Royalty to purchase up to 400,000 shares of common stock at an exercise price of $0.0001 per share. The warrant has no expiration date and</description>
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   <pubDate>Mon, 23 Feb 2026 08:00:39 -0500</pubDate>
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   <title>Atara Biotherapeutics extends $9 million payment deadline to 2028</title>
   <link>http://www.streetinsider.com/Corporate+News/Atara+Biotherapeutics+extends+%249+million+payment+deadline+to+2028/26039572.html</link>
   <description>&lt;p&gt;Atara Biotherapeutics Inc. (NASDAQ: ATRA) announced it amended an agreement with HealthCare Royalty to extend the due date of a $9 million cash payment from June 30, 2026 to January 1, 2028.&lt;/p&gt;&lt;p&gt;The payment relates to a milestone in the company's commercialization agreement with Pierre Fabre Medicament for tabelecleucel, Atara's T-cell immunotherapy. The original purchase and sale agreement with HealthCare Royalty was signed in December 2022.&lt;/p&gt;&lt;p&gt;As part of the amendment, Atara issued a warrant to HealthCare Royalty to purchase up to 400,000 shares of common stock at an exercise price of $0.0001 per share. The warrant has no expiration date and</description>
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   <pubDate>Mon, 23 Feb 2026 08:00:39 -0500</pubDate>
      	<category domain="http://rss.financialcontent.com/stocksymbol">ATRA</category>
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   <title>Atara Biotherapeutics Provides a Business Update</title>
   <link>http://www.streetinsider.com/Press+Releases/Atara+Biotherapeutics+Provides+a+Business+Update/26039528.html</link>
   <description>
&lt;p class=&quot;bwalignc&quot;&gt;
&lt;i&gt;Atara renegotiates one-time milestone payment with HCRx&lt;/i&gt;

&lt;/p&gt;
&lt;p&gt;    THOUSAND OAKS, Calif.--(BUSINESS WIRE)--
&lt;a target=&quot;_blank&quot; rel=&quot;nofollow&quot; href=&quot;https://cts.businesswire.com/ct/CT?id=smartlink&amp;amp;url=https%3A%2F%2Fwww.atarabio.com%2F&amp;amp;esheet=54430257&amp;amp;newsitemid=20260223341002&amp;amp;lan=en-US&amp;amp;anchor=Atara+Biotherapeutics%2C+Inc.&amp;amp;index=1&amp;amp;md5=48aded1d66aa5c1dd675bb01cc7634f6&quot; shape=&quot;rect&quot;&gt;Atara Biotherapeutics, Inc.&lt;/a&gt; (Nasdaq: ATRA), a leader in T-cell immunotherapy, leveraging its novel allogeneic Epstein-Barr virus (EBV) T-cell platform to develop transformative therapies for patients with cancer and autoimmune diseases, today announced that the Company entered into an amendment (the Amendment) to the Purchase and Sale Agreement dated as of December 20, 2022 with a fund managed by HealthCare Royalty (“HCRx”). Under the terms of the Amendment, HCRx agreed to amend the due date of the one-time of $9.0 million cash payment</description>
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   <pubDate>Mon, 23 Feb 2026 08:00:00 -0500</pubDate>
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   <title>Atara Biotherapeutics Provides a Business Update</title>
   <link>http://www.streetinsider.com/Press+Releases/Atara+Biotherapeutics+Provides+a+Business+Update/26039528.html</link>
   <description>
&lt;p class=&quot;bwalignc&quot;&gt;
&lt;i&gt;Atara renegotiates one-time milestone payment with HCRx&lt;/i&gt;

&lt;/p&gt;
&lt;p&gt;    THOUSAND OAKS, Calif.--(BUSINESS WIRE)--
&lt;a target=&quot;_blank&quot; rel=&quot;nofollow&quot; href=&quot;https://cts.businesswire.com/ct/CT?id=smartlink&amp;amp;url=https%3A%2F%2Fwww.atarabio.com%2F&amp;amp;esheet=54430257&amp;amp;newsitemid=20260223341002&amp;amp;lan=en-US&amp;amp;anchor=Atara+Biotherapeutics%2C+Inc.&amp;amp;index=1&amp;amp;md5=48aded1d66aa5c1dd675bb01cc7634f6&quot; shape=&quot;rect&quot;&gt;Atara Biotherapeutics, Inc.&lt;/a&gt; (Nasdaq: ATRA), a leader in T-cell immunotherapy, leveraging its novel allogeneic Epstein-Barr virus (EBV) T-cell platform to develop transformative therapies for patients with cancer and autoimmune diseases, today announced that the Company entered into an amendment (the Amendment) to the Purchase and Sale Agreement dated as of December 20, 2022 with a fund managed by HealthCare Royalty (“HCRx”). Under the terms of the Amendment, HCRx agreed to amend the due date of the one-time of $9.0 million cash payment</description>
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   <pubDate>Mon, 23 Feb 2026 08:00:00 -0500</pubDate>
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   <title>Atara Biotherapeutics Provides a Business Update</title>
   <link>http://www.streetinsider.com/Press+Releases/Atara+Biotherapeutics+Provides+a+Business+Update/26039528.html</link>
   <description>
&lt;p class=&quot;bwalignc&quot;&gt;
&lt;i&gt;Atara renegotiates one-time milestone payment with HCRx&lt;/i&gt;

&lt;/p&gt;
&lt;p&gt;    THOUSAND OAKS, Calif.--(BUSINESS WIRE)--
&lt;a target=&quot;_blank&quot; rel=&quot;nofollow&quot; href=&quot;https://cts.businesswire.com/ct/CT?id=smartlink&amp;amp;url=https%3A%2F%2Fwww.atarabio.com%2F&amp;amp;esheet=54430257&amp;amp;newsitemid=20260223341002&amp;amp;lan=en-US&amp;amp;anchor=Atara+Biotherapeutics%2C+Inc.&amp;amp;index=1&amp;amp;md5=48aded1d66aa5c1dd675bb01cc7634f6&quot; shape=&quot;rect&quot;&gt;Atara Biotherapeutics, Inc.&lt;/a&gt; (Nasdaq: ATRA), a leader in T-cell immunotherapy, leveraging its novel allogeneic Epstein-Barr virus (EBV) T-cell platform to develop transformative therapies for patients with cancer and autoimmune diseases, today announced that the Company entered into an amendment (the Amendment) to the Purchase and Sale Agreement dated as of December 20, 2022 with a fund managed by HealthCare Royalty (“HCRx”). Under the terms of the Amendment, HCRx agreed to amend the due date of the one-time of $9.0 million cash payment</description>
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   <pubDate>Mon, 23 Feb 2026 08:00:00 -0500</pubDate>
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   <title>Atara Biotherapeutics Provides a Business Update</title>
   <link>http://www.streetinsider.com/Press+Releases/Atara+Biotherapeutics+Provides+a+Business+Update/26039528.html</link>
   <description>
&lt;p class=&quot;bwalignc&quot;&gt;
&lt;i&gt;Atara renegotiates one-time milestone payment with HCRx&lt;/i&gt;

&lt;/p&gt;
&lt;p&gt;    THOUSAND OAKS, Calif.--(BUSINESS WIRE)--
&lt;a target=&quot;_blank&quot; rel=&quot;nofollow&quot; href=&quot;https://cts.businesswire.com/ct/CT?id=smartlink&amp;amp;url=https%3A%2F%2Fwww.atarabio.com%2F&amp;amp;esheet=54430257&amp;amp;newsitemid=20260223341002&amp;amp;lan=en-US&amp;amp;anchor=Atara+Biotherapeutics%2C+Inc.&amp;amp;index=1&amp;amp;md5=48aded1d66aa5c1dd675bb01cc7634f6&quot; shape=&quot;rect&quot;&gt;Atara Biotherapeutics, Inc.&lt;/a&gt; (Nasdaq: ATRA), a leader in T-cell immunotherapy, leveraging its novel allogeneic Epstein-Barr virus (EBV) T-cell platform to develop transformative therapies for patients with cancer and autoimmune diseases, today announced that the Company entered into an amendment (the Amendment) to the Purchase and Sale Agreement dated as of December 20, 2022 with a fund managed by HealthCare Royalty (“HCRx”). Under the terms of the Amendment, HCRx agreed to amend the due date of the one-time of $9.0 million cash payment</description>
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   <title>Atara Biotherapeutics Provides a Business Update</title>
   <link>http://www.streetinsider.com/Press+Releases/Atara+Biotherapeutics+Provides+a+Business+Update/26039528.html</link>
   <description>
&lt;p class=&quot;bwalignc&quot;&gt;
&lt;i&gt;Atara renegotiates one-time milestone payment with HCRx&lt;/i&gt;

&lt;/p&gt;
&lt;p&gt;    THOUSAND OAKS, Calif.--(BUSINESS WIRE)--
&lt;a target=&quot;_blank&quot; rel=&quot;nofollow&quot; href=&quot;https://cts.businesswire.com/ct/CT?id=smartlink&amp;amp;url=https%3A%2F%2Fwww.atarabio.com%2F&amp;amp;esheet=54430257&amp;amp;newsitemid=20260223341002&amp;amp;lan=en-US&amp;amp;anchor=Atara+Biotherapeutics%2C+Inc.&amp;amp;index=1&amp;amp;md5=48aded1d66aa5c1dd675bb01cc7634f6&quot; shape=&quot;rect&quot;&gt;Atara Biotherapeutics, Inc.&lt;/a&gt; (Nasdaq: ATRA), a leader in T-cell immunotherapy, leveraging its novel allogeneic Epstein-Barr virus (EBV) T-cell platform to develop transformative therapies for patients with cancer and autoimmune diseases, today announced that the Company entered into an amendment (the Amendment) to the Purchase and Sale Agreement dated as of December 20, 2022 with a fund managed by HealthCare Royalty (“HCRx”). Under the terms of the Amendment, HCRx agreed to amend the due date of the one-time of $9.0 million cash payment</description>
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