Stock Information

Corporate Profile

Exelon Corporation is the nation's leading competitive energy provider, with 2012 revenues of approximately $23.5 billion. Headquartered in Chicago, Exelon has operations and business activities in 47 states, the District of Columbia and Canada. Exelon is one of the largest competitive U.S. power generators, with approximately 35,000 megawatts of owned capacity comprising one of the nation's cleanest and lowest-cost power generation fleets. The company's Constellation business unit provides energy products and services to approximately 100,000 business and public sector customers and approximately 1 million residential customers. Exelon's utilities deliver electricity and natural gas to more than 6.6 million customers in central Maryland (BGE), northern Illinois (ComEd) and southeastern Pennsylvania (PECO). Exelon is headquartered in Chicago and trades on the NYSE under the ticker EXC.

Shareholder Inquiries

Exelon Corporation has appointed Wells Fargo Shareowner Services as its transfer agent, stock registrar, dividend disbursing agent and dividend reinvestment agent. Should you have questions concerning your registered shareholder account or the payment or reinvestment of your dividends, or if you wish to make a stock transaction or stock transfer, you may call shareowner services at Wells Fargo at the toll-free number shown to the left or access its website at www.shareowneronline.com.

Morgan Stanley Smith Barney administers the Employee Stock Purchase Plan (ESPP) and employee stock options. Should you have any questions concerning your employee plan shares or wish to make a transaction, you may call the toll-free numbers shown to the left or access its website at www.benefitaccess.com.

The company had approximately 134,000 holders of record of its common stock as of Dec. 31, 2012.

The 2012 Form 10-K Annual Report to the Securities and Exchange Commission was filed on Feb. 21, 2012. To obtain a copy without charge, write to Bruce G. Wilson, Senior Vice President, Deputy General Counsel and Corporate Secretary, Exelon Corporation, Post Office Box 805379, Chicago, Illinois 60680-5379.

The company maintains a telephone information service that enables investors to obtain currently available information on financial performance, company news and to access shareholder services at Wells Fargo. To use this service, please call our toll-free number: 866.530.8108.

Corporate Headquarters

Exelon Corporation
P.O. Box 805379
Chicago, IL 60680-5379

Transfer Agent

Wells Fargo
800.626.8729

Employee Stock
Purchase Plan

877.582.5113

Employee Stock Options

888.609.3534

Investor Relations
Voice Mailbox

312.394.2345

Shareholder Services
Voice Mailbox

312.394.8811

Independent Public
Accountants

PricewaterhouseCoopers LLP

Website

www.exeloncorp.com

Stock Ticker

EXC