Altimmune, Inc. reports

Company location: Gaithersburg, MD
Fiscal year end: 31 December

Altimmune, Inc. has filed 1,446 SEC EDGAR filings since 06 May 2005

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SEC filing history

Showing 51-75 of 1,000 matching filings.

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3

4

4 filing

Filing date: 09 Jan 2026
Reporting date: 08 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

4 filing

Filing date: 05 Jan 2026
Reporting date: 01 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

4 filing

Filing date: 05 Jan 2026
Reporting date: 05 Jan 2026
SEC evidence: Open document Open filing
Next action: Verify source filing

4

4 filing

Filing date: 29 Dec 2025
Reporting date: 29 Dec 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

4 filing

Filing date: 23 Dec 2025
Reporting date: 23 Dec 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

4 filing

Filing date: 22 Dec 2025
Reporting date: 22 Dec 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-32587

FORM 8-K

Filing date: 19 Dec 2025
Reporting date: 19 Dec 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

EFFECT File 333-291329

EFFECT filing

Filing date: 05 Dec 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

CORRESP

CORRESP filing

Filing date: 03 Dec 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 01 Dec 2025
Reporting date: 01 Dec 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-32587

FORM 8-K

Filing date: 01 Dec 2025
Reporting date: 30 Nov 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

S-3/A File 333-291329

S-3/A

Filing date: 13 Nov 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

4

4 filing

Filing date: 12 Nov 2025
Reporting date: 11 Nov 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

S-3 File 333-291329

S-3

Filing date: 06 Nov 2025
Reporting date: Not listed
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-32587

8-K

Filing date: 06 Nov 2025
Reporting date: 06 Nov 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

424B5 File 333-285355

424B5

Filing date: 06 Nov 2025
Reporting date: Not listed
SEC evidence: Open document Open filing
Next action: Verify source filing

10-Q File 001-32587

10-Q

Filing date: 06 Nov 2025
Reporting date: 30 Sep 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

8-K File 001-32587

8-K

Filing date: 06 Nov 2025
Reporting date: 06 Nov 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 03 Oct 2025
Reporting date: 01 Oct 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 03 Oct 2025
Reporting date: 01 Oct 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

3

OWNERSHIP DOCUMENT

Filing date: 03 Oct 2025
Reporting date: 01 Oct 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

8-K File 001-32587

8-K

Filing date: 03 Oct 2025
Reporting date: 01 Oct 2025
SEC evidence: Open document Open filing Open XBRL
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 29 Sep 2025
Reporting date: 25 Sep 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 29 Sep 2025
Reporting date: 25 Sep 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

4

OWNERSHIP DOCUMENT

Filing date: 29 Sep 2025
Reporting date: 25 Sep 2025
SEC evidence: Open document Open filing
Next action: Verify source filing

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