<SEC-DOCUMENT>0001326190-25-000019-index.html : 20250227
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<ACCEPTANCE-DATETIME>20250227164948
ACCESSION NUMBER:		0001326190-25-000019
CONFORMED SUBMISSION TYPE:	S-3
PUBLIC DOCUMENT COUNT:		15
FILED AS OF DATE:		20250227
DATE AS OF CHANGE:		20250227

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Altimmune, Inc.
		CENTRAL INDEX KEY:			0001326190
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		IRS NUMBER:				202726770
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-285355
		FILM NUMBER:		25680216

	BUSINESS ADDRESS:	
		STREET 1:		910 CLOPPER ROAD
		STREET 2:		SUITE 201S
		CITY:			GAITHERSBURG
		STATE:			MD
		ZIP:			20878
		BUSINESS PHONE:		2406541450

	MAIL ADDRESS:	
		STREET 1:		910 CLOPPER ROAD
		STREET 2:		SUITE 201S
		CITY:			GAITHERSBURG
		STATE:			MD
		ZIP:			20878

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PHARMATHENE, INC
		DATE OF NAME CHANGE:	20071016

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HEALTHCARE ACQUISITION CORP
		DATE OF NAME CHANGE:	20050505
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<TEXT>
Document 1 - file: tmb-20250227xs3.htm

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<DOCUMENT>
<TYPE>EX-1.2
<SEQUENCE>2
<FILENAME>tmb-20250227xex1d2.htm
<DESCRIPTION>EX-1.2
<TEXT>
Document 2 - file: tmb-20250227xex1d2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.4
<SEQUENCE>3
<FILENAME>tmb-20250227xex4d4.htm
<DESCRIPTION>EX-4.4
<TEXT>
Document 3 - file: tmb-20250227xex4d4.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.5
<SEQUENCE>4
<FILENAME>tmb-20250227xex4d5.htm
<DESCRIPTION>EX-4.5
<TEXT>
Document 4 - file: tmb-20250227xex4d5.htm

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<DOCUMENT>
<TYPE>EX-5.5
<SEQUENCE>5
<FILENAME>tmb-20250227xex5d5.htm
<DESCRIPTION>EX-5.5
<TEXT>
Document 5 - file: tmb-20250227xex5d5.htm

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<TYPE>EX-5.2
<SEQUENCE>6
<FILENAME>tmb-20250227xex5d2.htm
<DESCRIPTION>EX-5.2
<TEXT>
Document 6 - file: tmb-20250227xex5d2.htm

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<TYPE>EX-23.1
<SEQUENCE>7
<FILENAME>tmb-20250227xex23d1.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 7 - file: tmb-20250227xex23d1.htm

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<DOCUMENT>
<TYPE>EX-FILING FEES
<SEQUENCE>8
<FILENAME>tmb-20250227xexfees.htm
<DESCRIPTION>EX-FILING FEES
<TEXT>
Document 8 - file: tmb-20250227xexfees.htm

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Document 9 - file: tmb-20250227xex5d2001.jpg

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Document 10 - file: tmb-20250227xex5d5001.jpg

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Document 11 - file: tmb-20250227xs3007.jpg

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<TEXT>
Document 12 - file: tmb-20250227xs3009.jpg

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<SEQUENCE>13
<FILENAME>tmb-20250227xs3010.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 13 - file: tmb-20250227xs3010.jpg

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<TYPE>GRAPHIC
<SEQUENCE>14
<FILENAME>tmb-20250227xs3015.jpg
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<TEXT>
Document 14 - file: tmb-20250227xs3015.jpg

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Document 15 - file: tmb-20250227xs3021.jpg

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