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 *
WEYERS LARRY L
   2. Issuer Name and Ticker or Trading Symbol
INTEGRYS ENERGY GROUP, INC. [TEG] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Executive Chairman
(Last)
(First)
(Middle)
130 EAST RANDOLPH DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
03/29/2010
(Street)

CHICAGO, IL 60601		 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 03/29/2010   M   99,027 A $ 37.96 128,456.878 D  
Common Stock 03/29/2010   S   99,027 D $ 47.0513 29,429.878 D  
Common Stock               2,343.8193 I By ESOP

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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) $ 37.96 (1) 03/29/2010   M     99,027 12/12/2003 12/12/2012 Common Stock 99,027 $ 47.0513 0 D  
Employee Stock Option (Right to buy) $ 41.58 (2)             02/11/2011 02/11/2020 Common Stock 133,907   133,907 D  
Employee Stock Option (Right to buy) $ 42.12 (3)             02/12/2010 02/12/2019 Common Stock 123,600   123,600 D  
Employee Stock Option (Right to buy) $ 44.73 (4)             12/10/2004 12/10/2013 Common Stock 97,015   97,015 D  
Employee Stock Option (Right to buy) $ 48.11 (5)             12/08/2005 12/08/2014 Common Stock 111,607   111,607 D  
Employee Stock Option (Right to buy) $ 48.36 (6)             02/14/2009 02/14/2018 Common Stock 219,337   219,337 D  
Employee Stock Option (Right to buy) $ 52.73 (7)             12/07/2007 12/07/2016 Common Stock 123,913   123,913 D  
Employee Stock Option (Right to buy) $ 54.85 (8)             12/07/2006 12/07/2015 Common Stock 121,705   121,705 D  
Employee Stock Option (Right to buy) $ 58.65 (9)             05/17/2008 05/17/2017 Common Stock 63,016   63,016 D  
Performance Rights $ 0 (10)             01/01/2011(11) 06/30/2011 Common Stock 40,253   40,253 D  
Performance Rights $ 0 (10)             01/01/2012(11) 06/30/2012 Common Stock 29,293   29,293 D  
Performance Rights $ 0 (10)             01/01/2013(11) 06/30/2013 Common Stock 36,366   36,366 D  
Phantom Stock Unit (12)               (13)   (14) Common Stock 66,400.4248   66,400.4248 D  
Restricted Stock Units 2008 (15)               (16)   (16) Common Stock 8,353.423   8,353.423 D  
Restricted Stock Units 2009 (15)               (17)   (17) Common Stock 8,071.866   8,071.866 D  
Restricted Stock Units 2010 (15)               (18)   (18) Common Stock 11,686.07   11,686.07 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
WEYERS LARRY L
130 EAST RANDOLPH DRIVE
CHICAGO, IL 60601		   X     Executive Chairman  

Signatures

 By: Dane E. Allen, as Power of Attorney For: Mr. Weyers   03/30/2010
**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 option vests in four equal annual installments beginning on December 12, 2003.
(2) The option vests in four equal annual installments beginning on February 11, 2011.
(3) The option vests in four equal annual installments beginning on February 12, 2010.
(4) The option vests in four equal annual installments beginning on December 10, 2004.
(5) The option vests in four equal annual installments beginning on December 8, 2005.
(6) The option vests in four equal annual installments beginning on February 14, 2009.
(7) The option vests in four equal annual installments beginning on December 7, 2007.
(8) The option vests in four equal annual installments beginning on December 7, 2006.
(9) The option vests in four equal annual installments beginning on May 17, 2008.
(10) Performance rights vest and are issued three years after the performance rights are awarded and the final number of shares issued is determined based on company performance against an established industry benchmark.
(11) Performance rights vest and are issued three years after the performance rights are awarded and the final number of shares issued is determined based on company performance against an established industry benchmark.
(12) These phantom stock units convert to common stock on a one-for-one basis.
(13) Unless the participant has selected a later commencement date, distribution of stock and equivalents will commence within 60 days following the end of the calendar year in which occurs the participant's retirement or termination of service.
(14) Unless the participant has selected a later commencement date, distribution of stock and equivalents will commence within 60 days following the end of the calendar year in which occurs the participant's retirement or termination of service.
(15) Each restricted stock unit represent a contingent right to receive one share of TEG common stock.
(16) The restricted stock units vest in four equal annual installments beginning on February 14, 2009.
(17) The restricted stock units vest in four equal annual installments beginning on February 12, 2010.
(18) The restricted stock units vest in four equal annual installments beginning on February 11, 2011.
 
Remarks:
Table 1, Line 1 reflects dividends paid on Restricted Stock Awards and reinvested in additional Restricted Stock on March 22, 2010. Table 2 reflects dividends paid on Phantom Stock Units and reinvested in additional Phantom Stock Units under the Company's Deferred Compensation Plan on March 22, 2010, and Table 2 also reflects dividends paid on Restricted Stock Units and reinvested in additional Restricted Stock Units, under the Company's 2007 Omnibus Incentive Compensation Plan on March 22, 2010.

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