Altimmune ALT SEC Filings

NASDAQ ALT
$2.17 -0.06 (-2.69%)
At close: Oct 22, 2026 · 4:00 PM EDT
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing Altimmune, Inc. (ALT) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
14Insider Transaction0001802615-26-000002Oct 5, 2026 12:10 AM
24Insider Transaction0001251779-26-000011Oct 5, 2026 12:05 AM
34Insider Transaction0002156820-26-000004Oct 2, 2026 12:17 AM
43Insider Transaction0002156820-26-000003Oct 2, 2026 12:15 AM
58-KCurrent Report0001326190-26-000056Sep 29, 2026 7:03 AM
64Insider Transaction0001595064-26-000002Sep 17, 2026 8:05 PM
74Insider Transaction0001698665-26-000007Aug 13, 2026 8:05 PM
810-QQuarterly & Annual Report0001326190-26-000052Aug 12, 2026 4:04 PM
98-KCurrent Report0001326190-26-000049Aug 12, 2026 7:33 AM
104Insider Transaction0001251779-26-000009Aug 3, 2026 8:05 PM
114Insider Transaction0001705905-26-000010Aug 3, 2026 8:05 PM
128-KCurrent Report0001326190-26-000044Jul 28, 2026 11:04 AM
138-KCurrent Report0001104659-26-074575Jun 16, 2026 8:05 PM
14SCHEDULE 13GBeneficial Ownership Report0001214659-26-006495May 15, 2026 8:15 PM
15S-8Prospectus0001326190-26-000041May 13, 2026 4:17 PM
1610-QQuarterly & Annual Report0001326190-26-000040May 13, 2026 4:13 PM
178-KCurrent Report0001326190-26-000037May 13, 2026 11:34 AM
18SCHEDULE 13GBeneficial Ownership Report0000093751-26-000201May 12, 2026 1:46 PM
19SCHEDULE 13GBeneficial Ownership Report0000905148-26-002008May 1, 2026 9:38 PM
20SCHEDULE 13GBeneficial Ownership Report0000905148-26-002008May 1, 2026 9:38 PM
21SCHEDULE 13GBeneficial Ownership Report0000905148-26-002008May 1, 2026 9:38 PM
22SCHEDULE 13GBeneficial Ownership Report0001193125-26-201587May 1, 2026 8:36 PM
234Insider Transaction0001960596-26-000002May 1, 2026 8:23 PM
244Insider Transaction0001960596-26-000002May 1, 2026 8:23 PM
254Insider Transaction0001960596-26-000002May 1, 2026 8:23 PM
264Insider Transaction0001555132-26-000008May 1, 2026 8:20 PM
274Insider Transaction0001555132-26-000008May 1, 2026 8:20 PM
284Insider Transaction0001555132-26-000008May 1, 2026 8:20 PM
294Insider Transaction0001527204-26-000002May 1, 2026 8:18 PM
304Insider Transaction0001527204-26-000002May 1, 2026 8:18 PM
314Insider Transaction0001527204-26-000002May 1, 2026 8:18 PM
324Insider Transaction0001705904-26-000002May 1, 2026 8:16 PM
334Insider Transaction0001705904-26-000002May 1, 2026 8:16 PM
344Insider Transaction0001705904-26-000002May 1, 2026 8:16 PM
354Insider Transaction0001743611-26-000004May 1, 2026 8:13 PM
364Insider Transaction0001743611-26-000004May 1, 2026 8:13 PM
374Insider Transaction0001743611-26-000004May 1, 2026 8:13 PM
384Insider Transaction0001705562-26-000002May 1, 2026 8:11 PM
394Insider Transaction0001705562-26-000002May 1, 2026 8:11 PM
404Insider Transaction0001705562-26-000002May 1, 2026 8:11 PM
41SCHEDULE 13GBeneficial Ownership Report0001346824-26-000125May 1, 2026 8:10 PM
424Insider Transaction0001409939-26-000004May 1, 2026 8:08 PM
434Insider Transaction0001409939-26-000004May 1, 2026 8:08 PM
444Insider Transaction0001409939-26-000004May 1, 2026 8:08 PM
454Insider Transaction0001201196-26-000002May 1, 2026 8:05 PM
464Insider Transaction0001201196-26-000002May 1, 2026 8:05 PM
474Insider Transaction0001201196-26-000002May 1, 2026 8:05 PM
48SCHEDULE 13GBeneficial Ownership Report0001172661-26-001579Apr 30, 2026 4:00 PM
498-KCurrent Report0001104659-26-048552Apr 24, 2026 8:05 PM
50424B5Prospectus0001104659-26-047979Apr 24, 2026 1:29 AM
...

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