X0306 4 2018-06-25 0 0001200375 CODEXIS INC CDXS 0001005563 BARUCH THOMAS R C/O CODEXIS, INC. 200 PENOBSCOT DRIVE REDWOOD CITY CA 94063 1 0 0 0 Common Stock 2018-06-25 4 S 0 12500 15.484 D 165593 D Common Stock 2018-06-26 4 S 0 12500 14.382 D 153093 D The sales reported in this Form 4 were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.15 to $15.70, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $14.10 to $14.525, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. /s/ Rich Sabalot, Attorney-in-Fact for Thomas R. Baruch 2018-06-27