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 *
DePietro Ruthann
   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)
Vice President of Quality
(Last)
(First)
(Middle)
C/O INSULET CORPORATION, 9 OAK PARK DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
08/09/2012
(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 08/09/2012   M   5,000 A $ 6.83 23,351 (1) (2) D  
Common Stock 08/09/2012   S(3)   5,000 D $ 20 18,351 (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 08/09/2012   M     5,000   (4) 02/26/2019 Common Stock 5,000 $ 0 15,000 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
DePietro Ruthann
C/O INSULET CORPORATION
9 OAK PARK DRIVE
BEDFORD, MA 01730		       Vice President of Quality  

Signatures

 /s/ R. Anthony Diehl, attorney in fact   08/10/2012
**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 an aggregate of 531 shares acquired under the Insulet Corporation 2007 Employee Stock Purchase Plan: 20 shares acquired on December 31, 2007; 48 shares acquired on June 30, 2008; 100 shares acquired on December 31, 2008; 99 shares acquired on June 30, 2009; 53 shares acquired on December 31, 2009; 51 shares acquired on June 30, 2010; 49 shares acquired on December 31, 2010; 35 shares acquired on June 30, 2011; 40 shares acquired on December 30, 2011; and 36 shares acquired on June 29, 2012.
(2) Includes 2,667 restricted stock units granted on March 1, 2010 which vest on March 1, 2013; 5,334 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 8,000 restricted stock units granted on April 1, 2012 which vest one-quarter of the total units on April 1, 2013, one-quarter of the total units on April 1, 2014, one-quarter of the total units on April 1, 2015 and one-quarter of the total units on April 1, 2016. Vested shares will be delivered to the reporting person as soon as practiable following a vesting date.
(3) The sales reported in this Form 4 were effected pursuant to Rule 10b5-1 trading plans adopted by the reporting person on March 7, 2012.
(4) 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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