Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
SULLIVAN PATRICK J
   2. Issuer Name and Ticker or Trading Symbol
INSULET CORP [PODD] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
CEO and Chairman of the Board
(Last)
(First)
(Middle)
C/O INSULET CORPORATION, 600 TECHNOLOGY PARK DRIVE, SUITE 200		 3. Date of Earliest Transaction (Month/Day/Year)
02/13/2018
(Street)

BILLERICA, MA 01821		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 02/13/2018   A   102,530 (1) A $ 0 282,107 (2) (3) D  
Common Stock 02/14/2018   A   12,081 (4) A $ 0 294,188 (2) (3) D  
Common Stock               100,000 I By Grantor Retained Annuity Trust

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (Right to Buy) $ 74.5 02/14/2018   A   31,476     (5) 02/14/2028 Common Stock 31,476 $ 0 31,476 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
SULLIVAN PATRICK J
C/O INSULET CORPORATION
600 TECHNOLOGY PARK DRIVE, SUITE 200
BILLERICA, MA 01821		   X     CEO and Chairman of the Board  

Signatures

 /s/ David Colleran, attorney-in-fact   02/15/2018
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) The 102,530 performance share units were granted on February 24, 2016, and the Compensation Committee of the Board of Directors determined on February 13, 2018 that the performance share units were earned based on the performance of the Company. The full award remains subject to time-based vesting in accordance with the following schedule: one-half of the performance share units vest on the second anniversary of the date of grant and one-half of the performance share units vest on the third anniversary of the date of grant. Vested shares will be delivered to the reporting person as soon as practicable following a vesting date.
(2) Includes 14,550 restricted stock units granted on March 2, 2015, which vest on March 2, 2018; 15,216 performance share units granted on April 1, 2015, which vest on April 1, 2018; 28,480 restricted stock units granted on February 24, 2016, which vest one-half of the total units on February 24, 2018 and one-half of the total units on February 24, 2019; and 18,033 restricted stock units granted on February 22, 2017, which vest one-third of the total units on February 22, 2018, one-third of the total units on February 22, 2019 and one-third of the total units on February 22, 2020. Vested shares will be delivered to the reporting person as soon as practicable following a vesting date.
(3) Includes an aggregate of 2,213 shares acquired under the Insulet Corporation 2007 Employee Stock Purchase Plan on the following dates: 777 shares on December 31, 2015, 674 shares acquired on June 30, 2016 and 762 shares acquired on May 31, 2017.
(4) The 12,081 restricted stock units vest one-third of the total units on February 14, 2019, one-third of the total units on February 14, 2020 and one-third of the total units on February 14, 2021, subject to continued employment. Vested shares will be delivered to the reporting person as soon as practicable following a vesting date.
(5) This option is subject to a four-year vesting period with 25% of the total award vesting one year after the grant date and the remainder vesting in equal quarterly installments each quarter thereafter for 12 quarters, subject to continued employment.

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