NISOURCE INC. — Director's Dealing 2016

May 19, 2016

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: NISOURCE INC/DE (NI)
CIK: 0001111711
Period of Report: 2016-05-11

Reporting Person: Surface Suzanne K. (Vice President, Audit)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	32809	Direct
Common Stock	4308.5788	Indirect

Footnotes

F1: Includes 8,671 restricted stock units granted on January 30, 2014. These units are scheduled to vest on February 28, 2017. Also includes 5,039 restricted stock units granted on January 29, 2015. These units are scheduled to vest on February 2, 2018. Also includes 2,943 restricted stock units granted on July 13, 2015. These units are scheduled to vest on February 2, 2018. Also includes 7,139 performance share units granted on January 29, 2016. These units are scheduled to vest on February 28, 2019 and upon satisfaction of performance measures approved by the Compensation Committee.

F2: Includes shares acquired through the NiSource Inc. Retirement Savings Plan through May 11, 2016.