X0306 4 2019-03-20 0001145197 INSULET CORP PODD 0001560152 Fallon John A. C/O INSULET CORPORATION 100 NAGOG PARK ACTON MA 01720 1 Common Stock 2019-03-20 4 M 0 5000 21.35 A 16743 D Common Stock 2019-03-20 4 S 0 5000 100.00 D 11743 D Stock Option (Right to Buy) 21.35 2019-03-20 4 M 0 5000 0 D 2022-11-01 Common Stock 5000 5000 D The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 13, 2018. Includes 2,185 restricted stock units granted on May 16, 2018, which vest on April 30, 2019, subject to continued service as a director or consultant. Vested shares will be delivered to the reporting person as soon as practicable following a vesting date. This option is subject to a three-year vesting period with 50% of the total award vesting on the first anniversary of the date of grant and 25% of the total award vesting on each of the second and third anniversaries of the date of grant, subject to continued service as a director or consultant. /s/ David Colleran, attorney-in-fact 2019-03-22