X0306 4 2020-06-05 0 0001746473 PLIANT THERAPEUTICS, INC. PLRX 0001809147 Howes Barbara C/O PLIANT THERAPEUTICS, INC. 260 LITTLEFIELD AVENUE SOUTH SAN FRANCISCO CA 94080 0 1 0 0 Chief Human Resource Officer Common Stock 2020-06-05 4 C 0 3821 A 24799 D Series C Preferred Stock 2020-02-27 4 A 0 27322 13.0845 A Common Stock 3821 27322 D Stock Option (right to buy) 6.22 2020-03-31 4 A 0 7584 0.00 A 2030-03-30 Common Stock 7584 7584 D Series C Preferred Stock 2020-06-05 4 C 0 27322 0.00 D Common Stock 3821 0 D The Series C Preferred Stock was convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The Series C Preferred Stock converted into Common Stock on a 7.15-for-one basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series C Preferred Stock had no expiration date. On May 22, 2020, the Issuer completed a one-for-7.15 reverse stock split of the Issuer's Common Stock ("Reverse Stock Split"). This amount has been adjusted to give effect to this Reverse Stock Split. 1/48th of the shares subject to such option vest and become exercisable in substantially equal installments on each monthly anniversary of March 31, 2020 (or if there is no corresponding day in any such month, on the last day of such month), subject to the Reporting Person's continuous service to the Issuer on each such date. /s/ Anthony Franks, attorney-in-fact 2020-06-09