Armata Pharmaceuticals, Inc.

We have adopted a code of ethics for directors, officers (including our principal executive officer, principal financial officer and principal accounting officer) and employees, known as the Code of Business Conduct and Ethics. The Code of Business Conduct and Ethics is available under the heading “Corporate Governance” of the Investor Relations section of our website athttps://investor.armatapharma.com/corporate-governance. Any amendment to, or waiver from, a provision of the codes of ethics applicable to our directors and executive officers will be disclosed in a current report on Form 8-K within four business days following the date of the amendment or waiver, unless the rules of the NYSE American exchange then permit website posting of such amendments and waivers, in which case we would promptly post such disclosures on our internet website.