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 *
Diehl R Anthony
   2. Issuer Name and Ticker or Trading Symbol
INSULET CORP [PODD] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Secretary and General Counsel
(Last)
(First)
(Middle)
C/O INSULET CORPORATION, 9 OAK PARK DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
12/17/2012
(Street)

BEDFORD, MA 01730		 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 12/17/2012   M   25,836 A $ 6.83 75,791 (1) (2) D  
Common Stock 12/17/2012   S(3)   25,836 D $ 21.5752 (4) 49,955 (1) (2) D  

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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) $ 6.83 12/17/2012   M     25,836   (5) 02/26/2019 Common Stock 25,836 $ 0 14,164 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Diehl R Anthony
C/O INSULET CORPORATION
9 OAK PARK DRIVE
BEDFORD, MA 01730		       Secretary and General Counsel  

Signatures

 /s/ R. Anthony Diehl   12/19/2012
**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) Includes 5,334 restricted stock units granted on March 1, 2010 which vest on March 1, 2013; 12,000 restricted stock units granted on March 1, 2011 which vest one-half of the total units on March 1, 2013 and one-half of the total units on March 1, 2014; and 20,000 restricted stock units granted on April 1, 2012 which vest one-quarter of the total units on the first anniversary date of the grant and one-quarter each on the second, third and fourth anniversaries of the date of grant. Vested shares will be delivered to the reporting person as soon as practicable following a vesting date.
(2) Includes an aggregate of 1,249 shares acquired under the Insulet Corporation 2007 Employee Stock Purchase Plan on the following dates: 400 shares acquired on December 31, 2007; and 849 shares acquired on June 30, 2008.
(3) The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 14, 2012.
(4) The price reported represents the weighted average sale price of the shares sold. The shares were sold at varying prices in the range of $21.47 to $21.84. 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 informaiton regarding the number of shares sold at each separate price.
(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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