THE CORPORATE LIBRARY

Related Party Transactions and Outside Related Director Information

Nicor Inc. (GAS)

3/10/2006 Proxy Information

Mr. Strobel was elected Senior Vice President, General Counsel and Secretary of Nicor and Nicor Gas Company in January 2001, Executive Vice President, General Counsel and Secretary in January 2002, President in October 2002, Chief Executive Officer of Nicor Gas in November 2003, Chief Executive Officer of Nicor in March 2005 and Chairman of Nicor and Nicor Gas in November 2005. Mr. Strobel was also appointed to the Nicor and Nicor Gas Boards of Directors in January 2004. Mr. StrobelÕs wife, Pamela B. Strobel, was Executive Vice President and Chief Administrative Officer of Exelon Corporation until her retirement on October 1, 2005. Since January 1, 2005, Nicor Gas and Exelon Corporation are parties to the following transactions, proposed transactions or business dealings: (1) Nicor Gas and Commonwealth Edison Company (ComEd), a subsidiary of Exelon Corporation, are parties to an interim agreement approved by the Illinois Commerce Commission under which they cooperate in cleaning up residue at former manufactured gas plant sites. Under the interim agreement, costs are evenly split between Nicor Gas and ComEd, except that, if they cannot agree upon a final allocation of costs, the interim agreement provides for arbitration. For 2005, Nicor Gas billed ComEd $2,348,413 and ComEd billed Nicor Gas $7,343,528. (2) Nicor Gas and Exelon Power Team, a subsidiary of Exelon Corporation, were parties to a two-year agreement entered into in June 2003 pursuant to which Nicor Gas transported natural gas to an electric generating station in Rockford, Illinois. Nicor Gas received net payments of $79,440 in 2005 under this agreement.

3/18/2005 8K Information

Thomas L. Fisher was Chief Executive Officer until April 2005 and President from 1994 until 2002.

3/11/2005 Proxy Information

Mr. Strobel was elected Senior Vice President, General Counsel and Secretary of Nicor Inc. and Nicor Gas Company in January 2001, Executive Vice President, General Counsel and Secretary in January 2002, President in October 2002, Chief Executive Officer of Nicor Gas in November 2003, and appointed to the Nicor and Nicor Gas Boards of Directors in January 2004. Mr. StrobelÕs wife, Pamela B. Strobel, is Executive Vice President and Chief Administrative Officer of Exelon Corporation. Since January 1, 2004, Nicor Gas and Exelon Corporation are parties to the following transactions, proposed transactions or business dealings: (1) Nicor Gas and Commonwealth Edison Company (ComEd), a subsidiary of Exelon Corporation, are parties to an interim agreement approved by the Illinois Commerce Commission under which they cooperate in cleaning up residue at former manufactured gas plant sites. Under the interim agreement, costs are evenly split between Nicor Gas and ComEd, except that, if they cannot agree upon a final allocation of costs, the interim agreement provides for arbitration. For 2004, Nicor Gas billed ComEd $1,511,794 and ComEd billed Nicor Gas $13,730,041. For 2005, Nicor Gas estimates that it will bill ComEd approximately $3,750,000 and that ComEd will bill Nicor Gas approximately $8,520,000. (2) Nicor Gas and Exelon Power Team, a subsidiary of Exelon Corporation, are parties to a two-year agreement entered into in June 2003 pursuant to which Nicor Gas transports natural gas to an electric generating station in Rockford, Illinois. Nicor Gas received payments of $2,057,966 in 2004 under this agreement, and estimates that it will receive payments of approximately $2,000,000 in 2005.

Following NicorÕs July 18, 2002 press release concerning accounting irregularities at Nicor Energy, a dissolved joint venture in which Nicor had a 50% interest, and problems in connection with its Performance-Based Rate (PBR) Plan, three purported derivative lawsuits were brought against Mr. Fisher, Ms. Kathleen Halloran (former Executive Vice President Finance and Administration and former Executive Vice President and Chief Risk Officer) and all members of NicorÕs Board of Directors (the Òindividual defendantsÓ). Nicor was named as a nominal defendant in all three suits, which have since been consolidated in an amended complaint. The actions were brought in the Circuit Court of Cook County, Illinois, Chancery Division. The plaintiffs allege that the individual defendants breached their fiduciary duties to Nicor by allegedly causing or allowing Nicor to disseminate to the market materially misleading and inaccurate information, failing to establish and maintain adequate accounting controls and approving the PBR plan despite allegedly knowing that the plan was unlawful or that Illinois Commerce Commission approval would be improperly obtained. Plaintiffs also contend that two of the defendants (Mr. Fisher and Mr. Birdsall) engaged in improper insider selling of Nicor stock at inflated prices. The plaintiffs seek compensatory and punitive damages, attorneysÕ fees and costs, and other relief against the individual defendants on behalf of Nicor, but do not seek any damages against the company. On January 25, 2005, Nicor announced that its Board of Directors had approved a preliminary agreement to settle the above referenced action. Under the terms of the settlement, all claims against the defendants will be dismissed without any finding or admission of wrongdoing or liability. The settlement obligates Nicor to adopt certain new corporate governance policies and requires the payment of $3.5 million in attorneysÕ fees and expenses to plaintiffsÕ counsel out of Directors and Officers insurance proceeds (see below). The final settlement is contingent upon approval by the court and entry of final judgement by the court, and therefore no amount is reflected in NicorÕs financial statements. The court granted preliminary approval of the settlement on February 18, 2005, and set a fairness hearing for March 29, 2005.

On April 27, 2004, one of NicorÕs Directors and Officers insurance carriers agreed to pay $29 million to a third party escrow agent on behalf of Nicor and its insured directors and officers to be used to satisfy Nicor directorsÕ and officersÕ liabilities and expenses associated with claims asserted against them in a securities class action, the related shareholder derivative lawsuit described above and related matters, with any remaining balance to be paid to Nicor. Upon final court approval of the derivative settlement set forth above, the escrow would be terminated and Nicor would receive approximately $25.5 million, which is the original escrow amount of $29 million reduced by the $3.5 million payment of derivative plaintiffÕs attorney fees and expenses. In connection with the derivative settlement referenced above, Nicor has also entered into a settlement agreement with its excess insurance carrier, pursuant to which the excess insurance carrier has agreed to pay Nicor $4 million upon final court approval of the settlement of the shareholder derivative action. Amounts related to the agreement to settle the shareholder derivative action, the amounts held in escrow and the settlement with the excess insurance carrier would be reflected in NicorÕs financial statements if, and when the derivative settlement becomes final.

3/5/2004 Proxy Information

Mr. Strobel was elected Senior Vice President, General Counsel and Secretary of Nicor Inc. and Nicor Gas Company in January 2001, Executive Vice President, General Counsel and Secretary in January 2002, President in October 2002, Chief Executive Officer of Nicor Gas in November 2003, and appointed to the Nicor and Nicor Gas Boards of Directors in January 2004. Mr. StrobelÕs wife, Pamela B. Strobel, is Executive Vice President and Chief Administrative Officer of Exelon Corporation. Since January 1, 2003, Nicor Gas and Exelon Corporation are parties to the following transactions, proposed transactions or business dealings: (1) Nicor Gas and Commonwealth Edison Company (ComEd), a subsidiary of Exelon Corporation, are parties to an interim agreement approved by the Illinois Commerce Commission under which they cooperate in cleaning up residue at former manufactured gas plant sites. Under the interim agreement, costs are evenly split between Nicor Gas and ComEd, except that, if they cannot agree upon a final allocation of costs, the interim agreement provides for arbitration. For 2003, Nicor Gas billed ComEd $2,873,556 and ComEd billed Nicor Gas $33,086,632. For 2004, Nicor Gas estimates that it will bill ComEd approximately $4,500,000 and that ComEd will bill Nicor Gas approximately $15,200,000. (2) Nicor Gas and Exelon Power Team, a subsidiary of Exelon Corporation, are parties to a three-year agreement entered into in May 2000 pursuant to which Nicor Gas transports natural gas to an electric generating station in Rockford, Illinois. Nicor Gas received payments of $2,278,380 in 2003 under this agreement, and estimates that it will receive payments of approximately $2,100,000 in 2004. (3) Nicor Energy L.L.C. (Nicor Energy), which is indirectly 50% owned by Nicor Inc. and which has ceased operations and is currently being dissolved, acting as an agent on its customersÕ behalf, changed the customersÕ energy charge from ComEdÕs bundled electricity rate to the ComEd Purchase Power Option (PPO). Nicor Energy remitted the energy and transmission charges it collected from the customers to ComEd. In 2003, the total amount of such remittances by Nicor Energy was approximately $12,500,000.

John H. Birdsall is a former President of Birdsall, Inc., a subsidiary of Nicor Inc. and Containerized Shipping, from 1982 to 1986.

Russ M. StrobelÕs wife, Pamela B. Strobel, is Executive Vice President and Chief Administrative Officer of Exelon Corporation.