X0306 4 2020-02-14 0 0001438533 Retrophin, Inc. RTRX 0001698262 ROTE WILLIAM E. C/O RETROPHIN, INC. 3721 VALLEY CENTRE DRIVE, STE 200 SAN DIEGO CA 92130 0 1 0 0 Senior Vice President, R&D Common Stock 2020-02-14 4 S 0 1250 16.72 D 26896 D Common Stock 2020-02-18 4 S 0 1250 16.55 D 25646 D The sales reported in this Form 4 were made pursuant to a written plan meeting the requirements of Rule 10b5-1(c) of the Securities Exchange Act of 1934, as amended, and includes the sale of shares to cover the tax obligation that occurred upon the vesting of restricted stock units. Includes an aggregate of 961 shares of the Issuer's common stock acquired by the reporting person on May 30, 2019 and November 30, 2019 pursuant to an employee stock purchase program. /s/ Elizabeth E. Reed, Attorney-in-Fact 2020-02-19