Company: ARMP
Filing Date: 2025-08-13
Form Type: S-3
Source: 0001104659-25-077648
Chunk: 48

Company: Armata Pharmaceuticals, Inc.
Filing Date: 2025-08-13
Form: S-3
Chunk 48
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 Officer |

<div align='center'>II-4

POWER OF ATTORNEY</div>

KNOW ALL BY THESE PRESENTS,
that each person whose signature appears below constitutes and appoints Deborah L. Birx and David House, and each of them, as his or her
true and lawful attorneys-in-fact and agents, each with the full power of substitution, for him or her and in his or her name, place or
stead, in any and all capacities, to sign any and all amendments to this registration statement (including post-effective amendments),
and to sign any registration statement for the same offering covered by this registration statement that is to be effective upon filing
pursuant to Rule 462(b) promulgated under the Securities Act, and all post-effective amendments thereto, and to file the same,
with exhibits thereto and other documents in connection therewith, with the U.S. Securities and Exchange Commission, granting unto said
attorneys-in-fact and agents, and each of them, full power and authority to do and perform each and every act and thing requisite and
necessary to be done in and about the premises, as fully to all intents and purposes as he or she might or could do in person, hereby
ratifying and confirming all that said attorneys-in-fact and agents, or their substitute or substitutes, may lawfully do or cause to be
done by virtue hereof.

Pursuant to the requirements
of the Securities Act, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

| Signature                  
 /s/ Deborah                
 L. Birx, M.D.              |     | Title                            
 Chief Executive Officer          
 and                              |     | Date            
 August 13, 2025 |
|:---------------------------|:----|:---------------------------------|:----|:----------------|
| Deborah L. Birx, M.D.      |     | Member of the Board of Directors |     |                 |
|                            |     | -Principal Executive             
 Officer                          |     |                 |
| /s/ David                  
 House                      |     | Senior Vice President, Finance   |     | August 13, 2025 |
| David House                |     | -Principal Financial             
 and Accounting Officer           |     |                 |
| /s/ Robin                  
 C. Kramer                  |     | Chairman of the Board of         
 Directors                        |     | August 13, 2025 |
| Robin C. Kramer            |     |                                  |