X0306 4 2019-04-08 0 0001426332 NGM BIOPHARMACEUTICALS INC NGM 0001182471 RIEFLIN WILLIAM JL 333 OYSTER POINT BOULEVARD SOUTH SAN FRANCISCO CA 94080 1 1 0 0 Executive Chairman Common Stock 2019-04-08 4 C 0 56668 A 2769168 I See Footnotes Series A Preferred Stock 2019-04-08 4 C 0 50000 0.00 D Common Stock 50000 0 I See Footnote Series B Preferred Stock 2019-04-08 4 C 0 6668 0.00 D Common Stock 6668 0 I See Footnote Every two shares of Series A preferred stock and Series B preferred stock automatically converted into one share of common stock in connection with the closing of the issuer's initial public offering. These shares have no expiration date. Mr. Rieflin early exercised certain shares of common stock, of which (i) 44,531 shares of common stock granted on January 27, 2016 remain unvested and (ii) 103,906 shares of common stock granted on January 20, 2017 remain unvested. Shares held by the Rieflin Family Trust U/A 4/3/00. /s/ William J. Rieflin 2019-04-10