AGREEMENT REGARDING JOINT FILING OF SCHEDULE 13GJoint Filing Agreement • February 13th, 2019 • New Leaf Ventures II, L.P. • Pharmaceutical preparations
Pursuant to Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, the undersigned hereby agree that only one statement containing the information required by Schedule 13G need be filed with respect to the ownership by each of the undersigned of shares of Common Stock of Principia Biopharma Inc.
