X0306 4 2020-04-20 0 0001468748 Kodiak Sciences Inc. KOD 0001754049 EHRLICH JASON 2631 HANOVER STREET PALO ALTO CA 94304 0 1 0 0 See Remarks Common Stock 2020-04-20 4 M 0 6950 10.29 A 38234 D Common Stock 2020-04-20 4 S 0 1639 52.444 D 36595 D Common Stock 2020-04-20 4 S 0 551 53.34 D 36044 D Common Stock 2020-04-20 4 S 0 2836 54.502 D 33208 D Common Stock 2020-04-20 4 S 0 1924 55.198 D 31284 D Stock Option (Right to Buy) 10.29 2020-04-20 4 M 0 6950 0.00 D 2028-08-29 Common Stock 6950 410025 D The sale reported in this Form 4 was effected pursuant to a 10b5-1 trading plan. The price reported in Column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $51.98 to $52.75, inclusive. The Reporting Person undertakes to provide 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 these footnotes. The price reported in Column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $53.00 to $53.82, inclusive. The price reported in Column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $54.03 to $55.03, inclusive. The price reported in Column 4 is a weighted-average price. The shares were sold in multiple transactions ranging from $55.08 to $56.04, inclusive. Twenty-five percent of the shares subject to the option vested on September 1, 2019 and 1/48th of the shares subject to the option vest on the same day of each month thereafter. Chief Medical Officer and Chief Development Officer /s/ Carlton Fleming, Attorney-in-Fact for Jason Ehrlich 2020-04-22