X0304 4 2011-12-09 1 0000072020 NICOR INC GAS 0001205607 DALESSANDRO ROCCO J NICOR INC. 1844 FERRY ROAD NAPERVILLE IL 60563 0 1 0 0 EVP - Nicor Gas Company Common Stock 2011-12-09 4 D 0 3976.836 D 0 D Restricted Stock Units 2011-12-09 4 D 0 12330 D Common Stock 12330 0 D Phantom Stock 2011-12-09 4 D 0 8433.35 D Common Stock 8433.35 0 D Includes 66.066 shares of common stock acquired in August and November 2011 under the Dividend Reinvestment Plan. Disposed of pursuant to the Merger Agreement, dated December 6, 2010 (the "Merger Agreement"), by and among Nicor Inc., AGL Resources Inc., Apollo Acquisition Corp. and Ottawa Acquisition LLC, in exchange for $21.20 in cash and 0.8382 of a share ($33.44) of AGL Resources common stock for each share of Nicor Inc. common stock held immediately prior to the Effective Time of the merger. Each restricted stock unit ("RSU") represents a contingent right to receive one share of Nicor Inc. common stock per the terms in the agreement between Nicor Inc. and the reporting person. The 12,330 total includes the grant of 3,430 RSUs on March 27, 2008; 3,860 RSUs on March 26, 2009; 2,750 RSUs on March 25, 2010; and 2,290 RSUs on March 24, 2011. Pursuant to the Merger Agreement, all RSUs, whether or not vested, are cancelled in exchange for an amount in cash equal to the Cash-Out Amount ($54.64) (as defined in the Merger Agreement) multiplied by the number of shares subject to such RSU immediately prior to the Effective Time of the merger, subject to any withholding of taxes. Each share of phantom stock represents a contingent right to receive one share of Nicor Inc. common stock, and pursuant to the Merger Agreement, is cancelled, whether or not vested, in exchange for an amount in cash equal to the Cash-Out Amount ($54.64)(as defined in the Merger Agreement) multiplied by the number of shares immediately prior to the Effective Time of the merger, subject to any withholding of taxes. NOTE: Formerly until December 12, 2011, the ticker symbol was GAS. Antoinette M. Lambert - Attorney-in-Fact 2011-12-13