X0306 4 2020-01-21 0001460702 RITTER PHARMACEUTICALS INC RTTR 0001237556 FOEHR MATTHEW W RITTER PHARMACEUTICALS, INC. 1880 CENTURY PARK EAST, SUITE 1000 LOS ANGELES CA 90067 1 0 0 0 Common Stock 2020-01-21 4 C 0 76923 0 A 100174 D Common Stock 2020-04-10 4 A 0 38461 0 A 138635 D Series B convertible preferred stock 1.30 2020-01-21 4 C 0 100 0 D Common Stock 76923 0 D Warrant Shares (right to buy) 1.30 2020-04-10 4 D 0 38461 D 2018-11-05 2023-11-05 Common Stock 38461 0 D The Reporting Person converted 100 shares of Series B convertible preferred stock on January 21, 2020, at a conversion price of $1.30 per share, resulting in his acquisition of 76,923 shares of common stock. The Series B convertible preferred stock had a stated value of $1,000 per share, was convertible at any time, and had no expiration date. The Reporting Person disposed of warrants to purchase 38,461 shares of the Issuer's common stock in exchange for 38,461 shares of the Issuer's common stock pursuant to an exchange agreement with the Issuer in reliance on Section 3(a)(9) of the Securities Act of 1933, as amended. /s/ Andrew J. Ritter attorney-in-fact 2020-04-23