X0306 4 2021-12-31 0001145197 INSULET CORP PODD 0001768648 McMillan Wayde D. C/O INSULET CORPORATION 100 NAGOG PARK ACTON MA 01720 1 EVP, CFO Common Stock 2021-12-31 4 S 0 193 266.37 D 21740 D Common Stock 2021-12-31 4 S 0 400 267.82 D 21340 D Common Stock 2021-12-31 4 S 0 500 268.88 D 20840 D Common Stock 2021-12-31 4 S 0 672 270.19 D 20168 D Common Stock 2021-12-31 4 S 0 90 271.23 D 20078 D The transactions reported in this Form 4 were effected pursuant to an existing Rule 10b5-1 trading plan. The price reported represents the weighted average sale price of the shares sold. The shares were sold at varying prices in the range of $266.04 to $266.54. The Reporting Person hereby undertakes, upon request of the Staff of the U.S. Securities Exchange Commission, the Issuer or a security holder of the Issuer, to provide full information regarding the number of shares sold at each separate price. The price reported represents the weighted average sale price of the shares sold. The shares were sold at varying prices in the range of $267.45 to $268.11. The Reporting Person hereby undertakes, upon request of the Staff of the U.S. Securities Exchange Commission, the Issuer or a security holder of the Issuer, to provide full information regarding the number of shares sold at each separate price. The price reported represents the weighted average sale price of the shares sold. The shares were sold at varying prices in the range of $268.47 to $269.36. The Reporting Person hereby undertakes, upon request of the Staff of the U.S. Securities Exchange Commission, the Issuer or a security holder of the Issuer, to provide full information regarding the number of shares sold at each separate price. The price reported represents the weighted average sale price of the shares sold. The shares were sold at varying prices in the range of $269.86 to $270.55. The Reporting Person hereby undertakes, upon request of the Staff of the U.S. Securities Exchange Commission, the Issuer or a security holder of the Issuer, to provide full information regarding the number of shares sold at each separate price. /s/ John W. Kapples, attorney-in-fact 2022-01-04