X0306 4 2017-07-25 0 0001583648 PIERIS PHARMACEUTICALS, INC. PIRS 0001609405 Khuong Chau Quang C/O PIERIS PHARMACEUTICALS, INC. 255 STATE STREET, 9TH FLOOR BOSTON MA 02109 1 0 1 0 Stock Option (right to buy) 5.64 2017-07-25 4 A 0 5018 0.00 A 2017-07-25 2027-07-25 Common Stock 5018 5018 D The Reporting Person is an employee of OrbiMed Advisors LLC ("Advisors") and is obligated to transfer any shares issued under equity grants made to him by the Issuer, or the economic benefits thereof, to Advisors for the ultimate benefit of OrbiMed Private Investments III, LP and OrbiMed Associates III, LP. /s/ Marc D. Mantell, Attorney-in-fact 2017-07-27