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CORRESP Filing

Altimmune, Inc.
Date: Dec. 3, 2025 · CIK: 0001326190 · Accession: 0001104659-25-118172

AI Filing Summary & Sentiment

Sentiment
Urgency
Document Type
Confidence
SEC Posture
Company Posture

Summary

Reasoning

Date
December 3, 2025
Author
/s/ Gregory Weaver
Form
CORRESP
Company
Altimmune, Inc.

Letter

Altimmune, Inc.

910 Clopper Road, Suite 201S

Gaithersburg, Maryland 20878

December 3, 2025

Via EDGAR

United States Securities and Exchange Commission

Division of Corporation Finance

Office of Life Sciences

100 F Street, N.E.

Washington, D.C. 20549

Re: Altimmune, Inc.: Registration Statement on Form S-3/A, filed November 13, 2025 (File No. 333- 291329)

Ladies and Gentlemen:

Pursuant to Rule 461 under the Securities Act of 1933, as amended (the " Act "), Altimmune, Inc. (the " Company ") hereby requests that the effective date of the above-referenced registration statement (the " Registration Statement ") be accelerated to December 5, 2025, at 5:00 pm Eastern Time, or as soon thereafter as practicable, unless we or our outside counsel, Goodwin Procter LLP (" Goodwin "), request by telephone that such Registration Statement be declared effective at some other time. In making this acceleration request, the Company acknowledges that it is aware of its responsibilities under the Act.

Once the Registration Statement is effective, please orally confirm the event with our counsel, Goodwin, by calling Justin Anslow at (212) 459-7126. We also respectfully request that a copy of the written order from the Securities and Exchange Commission verifying the effective time and date of the Registration Statement be sent to our counsel, Goodwin, Attention: Justin Anslow, by email at JAnslow@goodwinlaw.com.

If you have any questions regarding this request, please contact Justin Anslow of Goodwin at (212) 459-7126.

Sincerely,
Altimmune, Inc.

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CORRESP
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 filename1.htm

 Altimmune, Inc.

 910 Clopper Road, Suite 201S

 Gaithersburg, Maryland 20878

 December 3, 2025

 Via EDGAR

 United States Securities and Exchange Commission

 Division of Corporation Finance

 Office of Life Sciences

 100 F Street, N.E.

 Washington, D.C. 20549

 Re:
 Altimmune, Inc.: Registration Statement on Form S-3/A, filed November 13, 2025 (File No. 333- 291329)

 Ladies and Gentlemen:

 Pursuant to Rule 461 under the Securities Act of 1933, as amended (the
" Act "), Altimmune, Inc. (the " Company ") hereby requests that the effective date of the above-referenced
registration statement (the " Registration Statement ") be accelerated to December 5, 2025, at 5:00 pm Eastern Time,
or as soon thereafter as practicable, unless we or our outside counsel, Goodwin Procter LLP (" Goodwin "), request by
telephone that such Registration Statement be declared effective at some other time. In making this acceleration request, the Company
acknowledges that it is aware of its responsibilities under the Act.

 Once the Registration Statement is effective, please orally confirm
the event with our counsel, Goodwin, by calling Justin Anslow at (212) 459-7126. We also respectfully request that a copy of the written
order from the Securities and Exchange Commission verifying the effective time and date of the Registration Statement be sent to our counsel,
Goodwin, Attention: Justin Anslow, by email at JAnslow@goodwinlaw.com.

 If you have any questions regarding this request, please contact Justin
Anslow of Goodwin at (212) 459-7126.

 Sincerely,

 Altimmune, Inc.

 /s/ Gregory Weaver

 Gregory Weaver

 Chief Financial Officer

 cc:
 Vipin K. Garg, Altimmune, Inc.

 Joseph Theis, Esq., Goodwin Procter LLP

 Justin Anslow, Esq., Goodwin Procter LLP