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 *
VAJDA DAVID J
   2. Issuer Name and Ticker or Trading Symbol
NISOURCE INC/DE [NI] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President and Treasurer
(Last)
(First)
(Middle)
801 E 86TH AVENUE		 3. Date of Earliest Transaction (Month/Day/Year)
08/17/2005
(Street)

MERRILLVILLE, IN 46410-6272		 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 08/17/2005 08/17/2005 M   5,000 A $ 16.2188 50,699 D  
Common Stock               2,319.021 (1) (2) I 401(k) Plan
Common Stock               1,332.9414 (3) (4) I 401(k) Plan held by spouse

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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
Non Qualified Stock Options $ 18.4375             01/30/2001 01/30/2010 Common Stock 4,000   4,000 D  
Non Qualified Stock Options $ 18.9063             08/26/1997 08/26/2006 Common Stock 6,300   6,300 D  
Non Qualified Stock Options $ 19.84             12/31/2002 12/31/2012 Common Stock 16,225   16,225 D  
Non Qualified Stock Options $ 20.6407             08/25/1998 08/25/2007 Common Stock 6,000   6,000 D  
Non Qualified Stock Options $ 21.005             01/24/2003 01/24/2012 Common Stock 7,135   7,135 D  
Non Qualified Stock Options $ 21.86             01/01/2005 01/01/2014 Common Stock 18,855   18,855 D  
Non Qualified Stock Options $ 22.22             08/21/2001 08/21/2010 Common Stock 4,000   4,000 D  
Non Qualified Stock Options $ 22.62             01/03/2006 01/03/2015 Common Stock 46,286   46,286 D  
Non Qualified Stock Options $ 24.5938             08/23/2000 08/23/2009 Common Stock 6,000   6,000 D  
Non Qualified Stock Options $ 25.94             12/31/2001 12/31/2010 Common Stock 5,896   5,896 D  
Non Qualified Stock Options $ 29.2188             08/24/1999 08/24/2008 Common Stock 6,000   6,000 D  
Non Qualified Stock Options $ 16.2188 08/17/2005 08/17/2005 M     5,000 08/22/1995 08/21/2005 Common Stock 5,000 $ 16.2188 0 D  
Non Qualified Stock Options $ 21.005             01/24/2003 01/24/2012 Common Stock 1,500   1,500 I NQSO held by spouse
Non Qualified Stock Options $ 21.795             01/23/2005 01/23/2014 Common Stock 2,000   2,000 I NQSO held by spouse
Non Qualified Stock Options $ 22.22             08/21/2001 08/21/2010 Common Stock 2,000   2,000 I NQSO held by spouse
Non Qualified Stock Options $ 22.62             01/03/2006 01/03/2015 Common Stock 2,250   2,250 I NQSO held by spouse
Non Qualified Stock Options $ 23.725             05/20/2003 05/20/2012 Common Stock 1,500   1,500 I NQSO held by spouse
Non Qualified Stock Options $ 24.5938             08/23/2000 08/23/2009 Common Stock 1,500   1,500 I NQSO held by spouse
Non Qualified Stock Options $ 25.94             12/31/2001 12/31/2010 Common Stock 2,000   2,000 I NQSO held by spouse
Non Qualified Stock Options $ 29.2188             08/24/1999 08/24/2008 Common Stock 1,500   1,500 I NQSO held by spouse

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
VAJDA DAVID J
801 E 86TH AVENUE
MERRILLVILLE, IN 46410-6272		       Vice President and Treasurer  

Signatures

 Gary W. Pottorff, Power of Attorney for David J. Vajda   08/19/2005
**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).
(2) Includes 35.2254 shares acquired on June 30, 2005 through the NiSource 401(k) Plan
(4) Includes 35.4134 shares acquired on June 30, 2005 by spouse through the NiSource 401(k) Plan.
(1) Includes 33.5159 shares acquired on March 31, 2005 through the NiSource 401(k) Plan.
(3) Includes 14.3101 shares acquired on March 31, 2005 by spouse through the NiSource 401(k) Plan

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