X0202 0001143313 AMERICAN STOCK EXCHANGE LLC 0000072843 NORTHERN INDIANA PUBLIC SERVICE CO 001-04125

801 E. 86TH AVENUE MERRILLVILLE IN INDIANA 46410-6272

2198535200 4 1/4% Cumulative Preferred Securities 17 CFR 240.12d2-2(a)(2) Kerri Ramirez Manager, Corporate Actions and Proxy Rulings 2006-05-01