Company: ARMP
Filing Date: 2025-12-01
Form Type: 424B5
Source: 0001104659-25-117382
Chunk: 68

Company: Armata Pharmaceuticals, Inc.
Filing Date: 2025-12-01
Form: 424B5
Chunk 68
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 when certain purchase limits are exceeded.

Similar to other purchase
transactions, an underwriter’s purchase to cover the syndicate short sales or to stabilize the market price of our securities may
have the effect of raising or maintaining the market price of our securities or preventing or mitigating a decline in the market price
of our securities. As a result, the price of our securities may be higher than the price that might otherwise exist in the open market.
The imposition of a penalty bid might also have an effect on the price of the securities if it discourages resales of the securities.

Neither we nor any underwriter
makes any representation or prediction as to the effect that the transactions described above may have on the price of the securities.
If such transactions are commenced, they may be discontinued without notice at any time.

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LEGAL MATTERS</div>

The validity of the securities
being offered by this prospectus will be passed upon for us by Willkie Farr & Gallagher LLP, New York, New York, and Ballard
Spahr LLP, Seattle, Washington.

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EXPERTS</div>

Ernst &
Young LLP, independent registered public accounting firm, has audited our consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2024, as set forth in their report (which contains an explanatory paragraph describing
conditions that raise substantial doubt about Armata Pharmaceuticals, Inc.’s ability to continue as a going concern as described
in Note 2 to the consolidated financial statements) which is incorporated by reference in this prospectus and elsewhere in the registration
statement. Our consolidated financial statements are incorporated by reference in reliance on Ernst & Young LLP’s report,
given on their authority as experts in accounting and auditing.

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WHERE YOU CAN FIND MORE INFORMATION</div>

We have filed with the SEC
a registration statement on Form S-3 under the Securities Act, with respect to the securities being offered by this prospectus. This
prospectus does not contain all of the information in the registration statement and its exhibits. For further information with respect
to us and the securities offered by this prospectus, we refer you to the registration statement and its exhibits. Statements contained
in this prospectus as to the contents of any contract or any other document referred to are not necessarily complete, and in each instance,
we refer you to the copy of the contract or other document filed as an exhibit to the registration statement