Atara Biotherapeutics (ATRA) SEC Filings https://investors.atarabio.com/sec-filings/section-16-filings/rss Atara Biotherapeutics (ATRA) - Section 16 Filings en-us https://d1io3yog0oux5.cloudfront.net/atarabio/files/theme/images/logo-sm.png Atara Biotherapeutics Logo Equisolve Investor Relations Suite <![CDATA[4 - Statement of changes in beneficial ownership of securities]]> https://investors.atarabio.com/sec-filings/all-sec-filings/content/0001193125-26-116060/0001193125-26-116060.pdf Thu, 19 Mar 26 16:31:03 -0400 https://investors.atarabio.com/sec-filings/all-sec-filings/content/0001193125-26-116060/0001193125-26-116060.pdf <![CDATA[4 - Statement of changes in beneficial ownership of securities]]> https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000905148-26-001225/0000905148-26-001225.pdf Wed, 11 Mar 26 17:46:55 -0400 https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000905148-26-001225/0000905148-26-001225.pdf <![CDATA[4 - Statement of changes in beneficial ownership of securities]]> https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000905148-26-001224/0000905148-26-001224.pdf Wed, 11 Mar 26 17:46:32 -0400 https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000905148-26-001224/0000905148-26-001224.pdf <![CDATA[4 - Statement of changes in beneficial ownership of securities]]> https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000905148-26-001144/0000905148-26-001144.pdf Wed, 04 Mar 26 16:28:55 -0500 https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000905148-26-001144/0000905148-26-001144.pdf <![CDATA[4 - Statement of changes in beneficial ownership of securities]]> https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000905148-26-001143/0000905148-26-001143.pdf Wed, 04 Mar 26 16:28:41 -0500 https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000905148-26-001143/0000905148-26-001143.pdf <![CDATA[4 - Statement of changes in beneficial ownership of securities]]> https://investors.atarabio.com/sec-filings/all-sec-filings/content/0001193125-26-013358/0001193125-26-013358.pdf Wed, 14 Jan 26 21:16:45 -0500 https://investors.atarabio.com/sec-filings/all-sec-filings/content/0001193125-26-013358/0001193125-26-013358.pdf <![CDATA[4 - Statement of changes in beneficial ownership of securities]]> https://investors.atarabio.com/sec-filings/all-sec-filings/content/0001193125-25-304018/0001193125-25-304018.pdf Mon, 01 Dec 25 17:00:35 -0500 https://investors.atarabio.com/sec-filings/all-sec-filings/content/0001193125-25-304018/0001193125-25-304018.pdf <![CDATA[4 - Statement of changes in beneficial ownership of securities]]> https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000905148-25-004141/0000905148-25-004141.pdf Wed, 19 Nov 25 16:55:47 -0500 https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000905148-25-004141/0000905148-25-004141.pdf <![CDATA[4 - Statement of changes in beneficial ownership of securities]]> https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000905148-25-004140/0000905148-25-004140.pdf Wed, 19 Nov 25 16:55:28 -0500 https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000905148-25-004140/0000905148-25-004140.pdf <![CDATA[4 - Statement of changes in beneficial ownership of securities]]> https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000905148-25-003070/0000905148-25-003070.pdf Wed, 20 Aug 25 16:12:03 -0400 https://investors.atarabio.com/sec-filings/all-sec-filings/content/0000905148-25-003070/0000905148-25-003070.pdf