NISOURCE INC. — Director's Dealing 2010

Apr 1, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: NISOURCE INC/DE (NI)
CIK: 0001111711
Period of Report: 2010-03-31

Reporting Person: BEERING STEVEN C DR (Director)

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-03-31	Phantom Stock	$0	A	1305.38	Acquired		Common Stock (1305.38)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	7642.8076	Direct

Footnotes

F1: Includes shares acquired through the NiSource Inc. Automatic Dividend Reinvestment and Stock Purchase Plan through February 19, 2010.

F2: The reported phantom stock units were acquired under the NiSource Inc. Nonemployee Director Stock Incentive Plan and are to be settled upon the reporting person's retirement or other termination of service.

F3: Balance includes 698.357 shares acquired pursuant to a dividend reinvestment feature of the Nonemployee Director Stock Incentive Plan through February 19, 2010.