X0306 4 2018-08-01 0001069308 Acer Therapeutics Inc. ACER 0001640880 TVM Life Science Ventures VII L.P. C/O TVM CAPITAL GROUP 204, RUE NOTRE-DAME OUEST, BUREAU 350 MONTREAL A8 H2Y 1T3 QUEBEC, CANADA 1 0 1 0 0001398598 Birner Hubert C/O TVM CAPITAL GROUP OTTOSTRASSE 4 MUNICH 2M 80333 GERMANY 1 0 1 0 0001639971 Marengere Luc C/O TVM CAPITAL GROUP OTTOSTRASSE 4 MUNICH 2M 80333 GERMANY 1 0 1 0 0001398596 Fischer Stefan C/O TVM CAPITAL GROUP OTTOSTRASSE 4 MUNICH 2M 80333 GERMANY 0 0 1 0 0001133921 SCHUHSLER HELMUT C/O TVM CAPITAL GROUP OTTOSTRASSE 4 MUNICH 2M 80333 GERMANY 0 0 1 0 0001750983 Beeby Reshentha C/O TVM CAPITAL GROUP OTTOSTRASSE 4 MUNICH 2M 80333 GERMANY 0 0 1 0 0001718117 Leatt Gary C/O TVM CAPITAL GROUP OTTOSTRASSE 4 MUNICH 2M 80333 GERMANY 0 0 1 0 Common Stock 2018-08-01 4 P 0 275000 18.00 A 1697709 I See Footnote These shares are directly held by TVM Life Science Ventures VII L.P. ("TVM VII LP"). TVM Life Science Ventures VII (GP) Ltd. ("TVM VII GP Ltd") is the general partner of TVM VII LP. Hubert Birner ("Birner"), Stefan Fischer ("Fischer"), Helmut Schuhsler ("Schuhsler"), Luc Marengere ("Marengere"), Reshentha Beeby ("Beeby"), and Gary Leatt ("Leatt") are members of the investment committee of TVM VII GP Ltd, which has voting and investment power with respect to these shares. TVM VII GP Ltd, Birner, Fischer, Schuhsler, Marengere, Beeby and Leatt each disclaim any beneficial ownership of the reported securities, except to the extent of any pecuniary interest therein, if any. Marengere is a director of the Issuer. /s/ Stefan Fischer, Director of TVM Life Science Ventures VII (GP) Ltd., general partner of TVM Life Science Ventures VII L.P. 2018-08-22 /s/ Stefan Fischer, Attorney in Fact for Hubert Birner 2018-08-22 /s/ Luc Marengere 2018-08-22 /s/ Stefan Fischer 2018-08-22 /s/ Stefan Fischer, Attorney in Fact for Helmut Schuhsler 2018-08-22 /s/ Reshentha Beeby 2018-08-22 /s/ Gary Leatt 2018-08-22