X0306 4 2018-08-02 false 0001192448 GLAUKOS Corp GKOS 0001640771 Calcaterra Chris M. C/O GLAUKOS CORPORATION 229 AVENIDA FABRICANTE SAN CLEMENTE CA 92672 false true false false Chief Operating Officer Common Stock 2018-08-02 4 M false 38983.00 16.49 A 278983.00 D Common Stock 2018-08-02 4 S false 34361.00 44.31 D 244622.00 D Common Stock 2018-08-02 4 S false 4522.00 45.40 D 240100.00 D Common Stock 2018-08-02 4 S false 100.00 46.29 D 240000.00 D Stock Options (Right to buy) 16.49 2018-08-02 4 M false 38983.00 0.00 D 2026-03-10 Common Stock 38983.00 60417.00 D These trades were made pursuant to a Rule 10b5-1 trading plan with pre-determined share amounts and prices. This transaction was executed in multiple trades at prices ranging from $44.00 to $44.99. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed in multiple trades at prices ranging from $45.00 to $45.925. The price reported above reflects the weighted average price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. This option was granted on March 10, 2016, and has a four-year vesting schedule in which 25% vests on the first year anniversary date of the grant and the remainder vests in equal monthly installments for 36 months thereafter, such that the stock option vests in full on the four-year anniversary of the grant date. /s/ Robert Davis, Attorney-in-Fact 2018-08-02