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)
President and CEO
(Last)
(First)
(Middle)
130 E. RANDOLPH DRIVE
3. Date of Earliest Transaction (Month/Day/Year)
05/20/2008
(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 05/20/2008   F   459 D $ 50.97 12,186.02 (1) D  
Common Stock               1,981.4225 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 (2)             12/12/2003 12/12/2012 Common Stock 99,027   99,027 D  
Employee Stock Option (Right to buy) $ 44.73 (3)             12/10/2004 12/10/2013 Common Stock 97,015   97,015 D  
Employee Stock Option (Right to buy) $ 48.11 (4)             12/08/2005 12/08/2014 Common Stock 111,607   111,607 D  
Employee Stock Option (Right to buy) $ 48.36 (5)             02/14/2009 02/14/2018 Common Stock 219,337   219,337 D  
Employee Stock Option (Right to buy) $ 52.73 (6)             12/07/2007 12/07/2016 Common Stock 123,913   123,913 D  
Employee Stock Option (Right to buy) $ 54.85 (7)             12/07/2006 12/07/2015 Common Stock 121,705   121,705 D  
Employee Stock Option (Right to buy) $ 58.65 (8)             05/17/2008 05/17/2017 Common Stock 63,016   63,016 D  
Performance Rights $ 0 (9)             01/01/2009(10) 06/30/2009 Common Stock 16,974   16,974 D  
Performance Rights $ 0 (11)             12/31/2009(11) 03/31/2010 Common Stock 10,886   10,886 D  
Performance Rights $ 0 (9)             01/01/2010(10) 06/30/2010 Common Stock 15,990   15,990 D  
Performance Rights $ 0 (9)             01/01/2011(10) 06/30/2011 Common Stock 40,253   40,253 D  
Phantom Stock Unit (12)               (13)   (14) Common Stock 57,756.5088   57,756.5088 D  
Restricted Stock Units (15)               (16)   (16) Common Stock 14,543.861   14,543.861 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
WEYERS LARRY L
130 E. RANDOLPH DRIVE
CHICAGO, IL 60601
  X     President and CEO  

Signatures

 By: Barth J. Wolf, as Power of Attorney For: Mr. Weyers   05/22/2008
**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) Reflects sale of shares to satisfy tax payment for vested shares of Restricted Stock granted under the Company's 2007 Omnibus Incentive Compensation Plan.
(2) The option vests in four equal annual installments beginning on December 12, 2003.
(3) The option vests in four equal annual installments beginning on December 10, 2004.
(4) The option vests in four equal annual installments beginning on December 8, 2005.
(5) The option vests in four equal annual installments beginning on February 14, 2009.
(6) The option vests in four equal annual installments beginning on December 7, 2007.
(7) The option vests in four equal annual installments beginning on December 7, 2006.
(8) The option vests in four equal annual installments beginning on May 17, 2008.
(9) Performance shares vest and are issued three years after the performance shares are awarded and the final number of shares issued is determined based on company performance against an established industry benchmark.
(10) Performance shares vest and are issued three years after the performance shares are awarded and the final number of shares issued is determined based on company performance against an established industry benchmark.
(11) The final number of shares issued will be based on company performance against an established industry benchmark for the performance period April 1, 2007, to December 31, 2009.
(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.
 
Remarks:
Table 1, Column 5   Reflects shares allocated by the company's ESOP program on March 31, 2008.

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