Company: ARMP
Filing Date: 2025-08-13
Form Type: S-8
Source: 0001104659-25-077650
Chunk: 2

Company: Armata Pharmaceuticals, Inc.
Filing Date: 2025-08-13
Form: S-8
Chunk 2
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 determined by the Board that is less than          
 (a) and (b).                                                                               |

This Registration Statement hereby incorporates by reference the contents of the Registrant’s registration statement on Form S-8 filed with the Commission on January 23, 2024 (File No. 333-276657), November 15, 2023 (File No. 333-275580), June 22, 2016 (File No. 333-212183), May 1, 2017 (File No. 333-217563), November 14, 2017 (File No. 333-221564), March 28, 2018 (File No. 333-223987), and June 10, 2019 (File No. 333-232058), respectively (the “”), in each case, to the extent not superseded hereby.The additional shares of Common Stock being registered by this Registration Statement are of
the same class as those securities registered on the Prior Registration Statements.

<div align='center'>PART I

INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</div>

All information required
by Part I to be contained in the prospectus is omitted from this Registration Statement in accordance with Section 428 of the
Securities Act of 1933, as amended (the “”) and the instructions to Form S-8 and instead will be
delivered, pursuant to Rule 428 under the Securities Act, to each participant in the Armata 2016 Plan and the Armata 2016 ESPP,
as applicable.

<div align='center'>PART II

INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</div>

| Item 3. | Incorporation             
 of Documents By Reference |

This Registration Statement
is being filed for the purpose of increasing the number of securities of the same class as other securities for which Registration Statements
of the Registrant on Form S-8 relating to the same employee benefit plan are effective. Pursuant to General Instruction E to Form S-8,
this Registration Statement hereby incorporates by reference the contents of the Registration Statements referenced above.

<div align='center'>- 2 -</div>

The following documents, which we have filed
with the Securities and Exchange Commission (the “”), are incorporated by reference in this registration
statement:

All documents subsequently
filed by the Registrant pursuant to Sections 13(a), 13(c), 14, and 15(d) of the Securities Exchange Act of