# EDGAR Filing Document

**Accession Number:** 0001326190
**File Stem:** 0000000000-25-008767
**Filing Date:** 2025-8
**Character Count:** 2133
**Document Hash:** 021c2254b72f7828b17266e5666be74b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000000000-25-008767.hdr.sgml**: 20250917

**ACCESSION NUMBER**: 0000000000-25-008767

**CONFORMED SUBMISSION TYPE**: UPLOAD

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250819

**FILED FOR**: 

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

**FILING VALUES:**
- **FORM TYPE:** UPLOAD
- **SEC FILE NUMBER:** 001-32587

**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
**PUBLIC REFERENCE ACCESSION NUMBER**: 0001326190-25-000015

## Text-Extract

```

                                                        August 19, 2025

Gregory Weaver
Chief Financial Officer
Altimmune, Inc.
910 Clopper Road, Suite 201S
Gaithersburg, MD 20878

       Re: Altimmune, Inc.
           Form 10-K for the Fiscal Year Ended December 31, 2024
           File No. 001-32587
Dear Gregory Weaver:

       We have completed our review of your filings. We remind you that the
company and
its management are responsible for the accuracy and adequacy of their
disclosures,
notwithstanding any review, comments, action or absence of action by the staff.

                                                        Sincerely,

                                                        Division of Corporation
Finance
                                                        Office of Life Sciences

```

### Attached PDF Documents

**Attachment 1:** `filename1`

_No text found in this document._