X0306 4 2021-06-11 0 0001468748 Kodiak Sciences Inc. KOD 0001754045 BORGESON JOHN A. 1200 PAGE MILL ROAD PALO ALTO CA 94304 0 1 0 0 See Remarks Common Stock 2021-06-11 4 M 0 3025 A 169027 D Common Stock 2021-06-15 4 S 0 1037 84.75 D 167990 D Stock Option (Right to Buy) 73.51 2021-06-11 4 A 0 19250 0.00 A 2029-12-29 Common Stock 19250 19250 D Restricted Stock Units 2021-06-11 4 A 0 12100 0.00 A Common Stock 12100 12100 D Restricted Stock Units 2021-06-11 4 M 0 3025 0.00 D Common Stock 3025 9075 D Each restricted stock unit ("RSU") represents a contingent right to receive one (1) share of the Issuer's common stock. Includes 103 shares acquired under the 2018 Employee Stock Purchase Plan on May 31, 2021. The sale was made to cover tax withholding obligations in connection with vesting and settlement of 1/4th of the Reporting Person's performance-based RSU granted on December 30, 2019. On December 30, 2019 the Reporting Person was awarded a performance-based award. 1/4th of the award vested on June 11, 2021 upon the achievement of certain performance criteria ("Performance Achievement Date"); thereafter, the award will vest in three equal annual installments on each of the first, second, and third anniversaries of the Performance Achievement Date, subject, in each case, to the Reporting Person's status as a Service Provider (as defined in the 2018 Equity Incentive Plan) on each vesting date. Senior VP and Chief Financial Officer /s/ David Peinsipp, Attorney-in-Fact for John A. Borgeson 2021-06-15