Exhibit 31.1
Certification of Principal Executive Officer
Pursuant to SEC Rule 13a-14(a)/15d-14(a)
I, William Enright, certify that:
| 1. | I have reviewed this Amendment No. 1 to the quarterly report on Form 10-Q of Altimmune, Inc.; and |
| 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
| Dated: October 18, 2017 | /s/ William Enright | |||
| Name: William Enright | ||||
| Title: President and Chief Executive Officer (principal executive officer) | ||||