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    <title>Altimmune, Inc. (ALT) - Company Filings</title>
    <link>https://www.developersdigest.tech/markets/alt/filings</link>
    <description>Latest company filings for Altimmune, Inc. (ALT) - annual reports, quarterly reports, major events, and insider trades, newest first.</description>
    <language>en</language>
    <lastBuildDate>Sun, 12 Jul 2026 22:52:38 GMT</lastBuildDate>
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      <title><![CDATA[ALT: SCHEDULE 13G/A]]></title>
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      <description><![CDATA[Altimmune, Inc. filed a SCHEDULE 13G/A (SCHEDULE 13G/A) on 2026-05-15.]]></description>
      <pubDate>Fri, 15 May 2026 12:00:00 GMT</pubDate>
      <category>SCHEDULE 13G/A</category>
    </item>
    <item>
      <title><![CDATA[ALT: Employee stock plan (S-8)]]></title>
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      <description><![CDATA[Altimmune, Inc. filed a Employee stock plan (S-8) on 2026-05-13.]]></description>
      <pubDate>Wed, 13 May 2026 12:00:00 GMT</pubDate>
      <category>S-8</category>
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    <item>
      <title><![CDATA[ALT: Quarterly report (10-Q)]]></title>
      <link>https://www.sec.gov/Archives/edgar/data/1326190/000132619026000040/alt-20260331x10q.htm</link>
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      <description><![CDATA[Altimmune, Inc. filed a Quarterly report (10-Q) on 2026-05-13.]]></description>
      <pubDate>Wed, 13 May 2026 12:00:00 GMT</pubDate>
      <category>10-Q</category>
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    <item>
      <title><![CDATA[ALT: Major company event (8-K)]]></title>
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      <description><![CDATA[Altimmune, Inc. filed a Major company event (8-K) on 2026-05-13.]]></description>
      <pubDate>Wed, 13 May 2026 12:00:00 GMT</pubDate>
      <category>8-K</category>
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    <item>
      <title><![CDATA[ALT: SCHEDULE 13G]]></title>
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      <description><![CDATA[Altimmune, Inc. filed a SCHEDULE 13G (SCHEDULE 13G) on 2026-05-12.]]></description>
      <pubDate>Tue, 12 May 2026 12:00:00 GMT</pubDate>
      <category>SCHEDULE 13G</category>
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    <item>
      <title><![CDATA[ALT: Insider trade (4)]]></title>
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      <pubDate>Fri, 01 May 2026 12:00:00 GMT</pubDate>
      <category>4</category>
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    <item>
      <title><![CDATA[ALT: Insider trade (4)]]></title>
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      <pubDate>Fri, 01 May 2026 12:00:00 GMT</pubDate>
      <category>4</category>
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      <title><![CDATA[ALT: Insider trade (4)]]></title>
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      <pubDate>Fri, 01 May 2026 12:00:00 GMT</pubDate>
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      <pubDate>Fri, 01 May 2026 12:00:00 GMT</pubDate>
      <category>4</category>
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      <title><![CDATA[ALT: Insider trade (4)]]></title>
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      <pubDate>Fri, 01 May 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[ALT: Insider trade (4)]]></title>
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      <title><![CDATA[ALT: Insider trade (4)]]></title>
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      <pubDate>Fri, 01 May 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[ALT: SCHEDULE 13G]]></title>
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      <pubDate>Fri, 01 May 2026 12:00:00 GMT</pubDate>
      <category>SCHEDULE 13G</category>
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      <pubDate>Fri, 01 May 2026 12:00:00 GMT</pubDate>
      <category>4</category>
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      <title><![CDATA[ALT: SCHEDULE 13G]]></title>
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      <pubDate>Fri, 01 May 2026 12:00:00 GMT</pubDate>
      <category>SCHEDULE 13G</category>
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    <item>
      <title><![CDATA[ALT: SCHEDULE 13G]]></title>
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      <pubDate>Fri, 01 May 2026 12:00:00 GMT</pubDate>
      <category>SCHEDULE 13G</category>
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    <item>
      <title><![CDATA[ALT: SCHEDULE 13G]]></title>
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      <description><![CDATA[Altimmune, Inc. filed a SCHEDULE 13G (SCHEDULE 13G) on 2026-04-30.]]></description>
      <pubDate>Thu, 30 Apr 2026 12:00:00 GMT</pubDate>
      <category>SCHEDULE 13G</category>
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    <item>
      <title><![CDATA[ALT: Major company event (8-K)]]></title>
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      <description><![CDATA[Altimmune, Inc. filed a Major company event (8-K) on 2026-04-24.]]></description>
      <pubDate>Fri, 24 Apr 2026 12:00:00 GMT</pubDate>
      <category>8-K</category>
    </item>
    <item>
      <title><![CDATA[ALT: Prospectus supplement (424B5)]]></title>
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      <description><![CDATA[Altimmune, Inc. filed a Prospectus supplement (424B5) on 2026-04-24.]]></description>
      <pubDate>Fri, 24 Apr 2026 12:00:00 GMT</pubDate>
      <category>424B5</category>
    </item>
    <item>
      <title><![CDATA[ALT: Prospectus supplement (424B5)]]></title>
      <link>https://www.sec.gov/Archives/edgar/data/1326190/000132619026000031/alt-20260422x424b5.htm</link>
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      <description><![CDATA[Altimmune, Inc. filed a Prospectus supplement (424B5) on 2026-04-22.]]></description>
      <pubDate>Wed, 22 Apr 2026 12:00:00 GMT</pubDate>
      <category>424B5</category>
    </item>
    <item>
      <title><![CDATA[ALT: S-3MEF]]></title>
      <link>https://www.sec.gov/Archives/edgar/data/1326190/000110465926047053/tm2612458d1_s3mef.htm</link>
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      <description><![CDATA[Altimmune, Inc. filed a S-3MEF (S-3MEF) on 2026-04-22.]]></description>
      <pubDate>Wed, 22 Apr 2026 12:00:00 GMT</pubDate>
      <category>S-3MEF</category>
    </item>
    <item>
      <title><![CDATA[ALT: Major company event (8-K)]]></title>
      <link>https://www.sec.gov/Archives/edgar/data/1326190/000132619026000027/alt-20260416x8k.htm</link>
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      <description><![CDATA[Altimmune, Inc. filed a Major company event (8-K) on 2026-04-16.]]></description>
      <pubDate>Thu, 16 Apr 2026 12:00:00 GMT</pubDate>
      <category>8-K</category>
    </item>
    <item>
      <title><![CDATA[ALT: Insider trade (4)]]></title>
      <link>https://www.sec.gov/Archives/edgar/data/1326190/000140993926000002/xslF345X06/form4-04062026_040403.xml</link>
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      <description><![CDATA[Altimmune, Inc. filed a Insider trade (4) on 2026-04-06.]]></description>
      <pubDate>Mon, 06 Apr 2026 12:00:00 GMT</pubDate>
      <category>4</category>
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    <item>
      <title><![CDATA[ALT: Insider trade (4)]]></title>
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      <pubDate>Wed, 01 Apr 2026 12:00:00 GMT</pubDate>
      <category>4</category>
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    <item>
      <title><![CDATA[ALT: Insider trade (4)]]></title>
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      <pubDate>Wed, 01 Apr 2026 12:00:00 GMT</pubDate>
      <category>4</category>
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    <item>
      <title><![CDATA[ALT: SCHEDULE 13G/A]]></title>
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      <description><![CDATA[Altimmune, Inc. filed a SCHEDULE 13G/A (SCHEDULE 13G/A) on 2026-03-26.]]></description>
      <pubDate>Thu, 26 Mar 2026 12:00:00 GMT</pubDate>
      <category>SCHEDULE 13G/A</category>
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    <item>
      <title><![CDATA[ALT: Annual report to shareholders (ARS)]]></title>
      <link>https://www.sec.gov/Archives/edgar/data/1326190/000110465926028963/tm262295d2_ars.pdf</link>
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      <description><![CDATA[Altimmune, Inc. filed a Annual report to shareholders (ARS) on 2026-03-17.]]></description>
      <pubDate>Tue, 17 Mar 2026 12:00:00 GMT</pubDate>
      <category>ARS</category>
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    <item>
      <title><![CDATA[ALT: Proxy statement (DEF 14A)]]></title>
      <link>https://www.sec.gov/Archives/edgar/data/1326190/000110465926028953/alt-20260416xdef14a.htm</link>
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      <description><![CDATA[Altimmune, Inc. filed a Proxy statement (DEF 14A) on 2026-03-17.]]></description>
      <pubDate>Tue, 17 Mar 2026 12:00:00 GMT</pubDate>
      <category>DEF 14A</category>
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      <title><![CDATA[ALT: Insider trade (4)]]></title>
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      <description><![CDATA[Altimmune, Inc. filed a Insider trade (4) on 2026-03-09.]]></description>
      <pubDate>Mon, 09 Mar 2026 12:00:00 GMT</pubDate>
      <category>4</category>
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      <title><![CDATA[ALT: Insider trade (4)]]></title>
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      <pubDate>Mon, 09 Mar 2026 12:00:00 GMT</pubDate>
      <category>4</category>
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    <item>
      <title><![CDATA[ALT: PRE 14A]]></title>
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      <description><![CDATA[Altimmune, Inc. filed a PRE 14A (PRE 14A) on 2026-03-06.]]></description>
      <pubDate>Fri, 06 Mar 2026 12:00:00 GMT</pubDate>
      <category>PRE 14A</category>
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    <item>
      <title><![CDATA[ALT: Annual report (10-K)]]></title>
      <link>https://www.sec.gov/Archives/edgar/data/1326190/000132619026000018/alt-20251231x10k.htm</link>
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      <pubDate>Fri, 06 Mar 2026 12:00:00 GMT</pubDate>
      <category>10-K</category>
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      <title><![CDATA[ALT: Major company event (8-K)]]></title>
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      <description><![CDATA[Altimmune, Inc. filed a Major company event (8-K) on 2026-03-05.]]></description>
      <pubDate>Thu, 05 Mar 2026 12:00:00 GMT</pubDate>
      <category>8-K</category>
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      <title><![CDATA[ALT: Insider trade (4)]]></title>
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      <description><![CDATA[Altimmune, Inc. filed a Insider trade (4) on 2026-02-27.]]></description>
      <pubDate>Fri, 27 Feb 2026 12:00:00 GMT</pubDate>
      <category>4</category>
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      <title><![CDATA[ALT: Insider trade (4)]]></title>
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      <pubDate>Fri, 27 Feb 2026 12:00:00 GMT</pubDate>
      <category>4</category>
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      <title><![CDATA[ALT: Employee stock plan (S-8)]]></title>
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      <pubDate>Fri, 06 Feb 2026 12:00:00 GMT</pubDate>
      <category>S-8</category>
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      <pubDate>Tue, 03 Feb 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[ALT: Major company event (8-K)]]></title>
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      <pubDate>Tue, 03 Feb 2026 12:00:00 GMT</pubDate>
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      <title><![CDATA[ALT: SCHEDULE 13G/A]]></title>
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      <pubDate>Fri, 30 Jan 2026 12:00:00 GMT</pubDate>
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      <pubDate>Thu, 29 Jan 2026 12:00:00 GMT</pubDate>
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