Power of Attorney for Linda M. Richardson

The filing is a Power of Attorney document for Linda M. Richardson, the Chief Commercial Officer of Altimmune, Inc. The document appoints Vipin K. Garg and Gregory Weaver as attorneys-in-fact to act on her behalf in matters related to SEC filings. This includes executing Forms 3, 4, and 5, Schedule 13D, Schedule 13G, and any amendments thereto. The attorneys-in-fact are also authorized to perform any necessary actions to complete and file these forms with the SEC and any stock exchange or similar authority. The Power of Attorney remains in effect until Richardson is no longer required to file these forms or until it is revoked in writing. The document also includes an indemnification clause protecting the attorneys-in-fact and the company from any false or misleading information provided by Richardson.