X0201 4 2004-02-17 0 0000072020 NICOR INC GAS 0001205607 DALESSANDRO ROCCO J NICOR INC. 1844 FERRY ROAD NAPERVILLE IL 60563 0 1 0 0 Senior Vice President Common Stock 2004-02-17 4 A 0 571.386 33.69 A 3488.182 D Common Stock 1420.000 I 401(K) Trust Account Common Stock elected in lieu of eligible cash awards with delivery deferred, pursuant to the Nicor Inc. Stock Deferral Plan. Includes 3,397.323 shares of Common Stock as to which delivery is deferred, pursuant to the Nicor Inc. Stock Deferral Plan (includes 36.848 shares of Common Stock acquired pursuant to dividend reinvestment in February 2004). Includes 1.234 shares of common stock acquired in February 2004 under the Dividend Reinvestment Plan. Includes shares of Common Stock acquired pursuant dividend reinvestment and through contributions to the Nicor Stock Fund. Mary F. Nelson - Attorney-in-Fact 2004-02-19