Company: ARMP
Filing Date: 2025-12-01
Form Type: 424B5
Source: 0001104659-25-117382
Chunk: 55

Company: Armata Pharmaceuticals, Inc.
Filing Date: 2025-12-01
Form: 424B5
Chunk 55
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 symbol “ARMP.”

Transfer Agent and Registrar

The transfer agent and registrar
for our common stock is Computershare Trust Company, N.A. The transfer agent and registrar’s address is 150 Royall Street, Canton,
MA 02021.

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DESCRIPTION OF THE DEBT SECURITIES</div>

As of the date of this prospectus,
we have no debt securities issued and outstanding.

The following description,
together with the additional information we include in any applicable prospectus supplement, summarizes the material terms and provisions
of the debt securities that we may offer under this prospectus. While the terms we have summarized below will apply generally to any future
debt securities we may offer, we will describe the particular terms of any debt securities that we may offer in more detail in the applicable
prospectus supplement. The terms of any debt securities we offer under a prospectus supplement may differ from the terms we describe below.

We will issue notes under
an indenture, which we will enter into with the trustee named in the indenture. Any indenture will be qualified under the Trust Indenture
Act of 1939. You should read the summary below, the applicable prospectus supplement and the provisions of the applicable indenture and
any related security documents, if any, in their entirety before investing in our debt securities.

We will describe in each prospectus
supplement the following terms relating to a series of debt securities:

| · | the title; |

| · | the principal amount being offered, and if a                          
 series, the total amount authorized and the total amount outstanding; |

| · | any limit on the amount that may be issued; |

| · | whether or not we will issue the series of debt                                 
 securities in global form, and if so, the terms and who the depository will be; |

| · | the maturity date; |

| · | the principal amount due at maturity, and whether                   
 the debt securities will be issued with an original issue discount; |

| · | whether and under what circumstances, if any,                                                                                          
 we will pay additional amounts on any debt securities held by a person who is not a United States person for tax purposes, and whether 
 we can redeem the debt securities if we have to pay such additional amounts;                                                           |

| · | the annual interest rate, which may be fixed                                                                                           
 or variable, or the method for determining the rate and the date interest will begin to accrue, the dates interest will be