X0306 4 2017-01-26 0001111711 NISOURCE INC/DE NI 0001419782 Hightman Carrie J 801 E 86TH AVENUE MERRILLVILLE IN 46410-6272 1 EVP & Chief Legal Officer Common Stock 2017-01-26 4 A 0 33753 22.22 A 439332 D Common Stock 10270.0622 I 401(k) Includes performance share units granted on January 26, 2017. These units are scheduled to vest three years after the date of grant and upon satisfaction of performance measures approved by the Compensation Committee. Shares acquired through the NiSource Inc. Retirement Savings Plan through January 26, 2017. Samuel K. Lee, Attorney-in-Fact for Carrie J. Hightman 2017-01-30