Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF 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 *
  Caro Jodi J
 2. Date of Event Requiring Statement (Month/Day/Year)
05/10/2012		 3. Issuer Name and Ticker or Trading Symbol
INTEGRYS ENERGY GROUP, INC. [TEG]
(Last)
(First)
(Middle)
130 EAST RANDOLPH STREET		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
VP - Genl Counsel & Asst Secy
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

CHICAGO, IL 60601		 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 Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 2,102.5071
D
 
Common Stock 1,399.1188
I
By Employee Stock Ownership Plan

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (Right to buy) 02/11/2011(1) 02/11/2020 Common Stock 5,936 $ 41.58 D  
Employee Stock Option (Right to buy) 02/12/2010(1) 02/12/2019 Common Stock 4,775 $ 42.12 D  
Employee Stock Option (Right to buy) 02/14/2009(1) 02/14/2018 Common Stock 5,570 $ 48.36 D  
Employee Stock Option (Right to buy) 02/10/2012(1) 02/10/2021 Common Stock 3,381 $ 49.4 D  
Employee Stock Option (Right to buy) 02/09/2013(1) 02/09/2022 Common Stock 5,839 $ 53.24 D  
Performance Rights 01/01/2013(2) 06/30/2013 Common Stock 1,612 $ 0 (2) D  
Performance Rights 01/01/2014(2) 06/30/2014 Common Stock 1,188 $ 0 (2) D  
Performance Rights 01/01/2015(2) 06/30/2015 Common Stock 1,969 $ 0 (2) D  
Restricted Stock Units 2009 02/12/2010 02/12/2013 Common Stock 114.4658 $ (3) D  
Restricted Stock Units 2010 02/11/2011 02/11/2014 Common Stock 287.4797 $ (3) D  
Restricted Stock Units 2011 02/10/2012 02/10/2015 Common Stock 352.3977 $ (3) D  
Restricted Stock Units 2012 02/09/2013 02/09/2016 Common Stock 680.6269 $ (3) D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Caro Jodi J
130 EAST RANDOLPH STREET
CHICAGO, IL 60601		       VP - Genl Counsel & Asst Secy  

Signatures

Dane E. Allen, as Power of Attorney for Ms. Caro 05/11/2012
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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 option vests in four equal annual installments beginning on the exercisable date.
(2) Performance stock rights represent the right to receive shares of common stock of the Company, in the event certain performance goals are satisfied. These goals are based on Company performance against an established industry benchmark, over a three year performance period. The final award of shares issued can be between 0% and 200% of the target award.
(3) Each restricted stock unit represent a contingent right to receive one share of Company common stock. The restricted stock units vest in four equal annual installments beginning on the exercisable date.

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