Exhibit 31.1
CERTIFICATION OF CHIEF EXECUTIVE OFFICER PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
I, Stephen S. Yoder, certify that:
1.I have reviewed this Amendment No. 1 to the quarterly report on Form 10-Q of Pieris Pharmaceuticals, 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.
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| Date: April 26, 2018 | | /s/ Stephen S. Yoder |
| | | Stephen S. Yoder |
| | | Title: Chief Executive Officer and President (principal executive officer) |
