M. Walter D’Alessio Lead Director, Independent Director

Profile

Mr. M. Walter D’Alessio has been a director of Exelon since October 20, 2000.

Mr. D’Alessio serves as lead director. He is Vice Chairman of NorthMarq Capital, a real estate
investment banking firm, and is Senior Managing Director of NorthMarq Advisors, a real estate
consulting group, positions he has held since July 2003. Prior to that, he was the Chairman and
CEO of Legg Mason Real Estate Services, Inc. (1982-July 2003). He is the Chairman of the
board of Brandywine Realty Trust, where he has been a trustee since 1996; and has been a
director of Independence Blue Cross since 1991 and currently serves as chairman of the
board.

Mr. D’Alessio has served as a director of the Federal Home Loan Bank Board of Pittsburgh since 2008, serving on the governance, human resources and community investment and public policy committees.  He is a trustee of the Pennsylvania Real Estate Investment Trust since 2005, serving on the compensation and human resources committee and the nominating and governance committee. He also serves on the Board of PECO, an Exelon subsidiary.

A leader in the Philadelphia business community, he has knowledge of the greater Philadelphia metropolitan area and economic trends in the region, particularly with respect to real estate development.

Mr. D’Alessio contributes to the Exelon board through his long history as a business leader and as a director of other business organizations. Through his leadership of other boards and his leadership and participation in the work of committees of other boards, Mr. D’Alessio is valued as a leader of the Exelon board and its corporate governance committee and makes important contributions to the work of the compensation committee, including its evaluation of the performance and compensation of the Exelon CEO. Mr. D’Alessio’s knowledge and expertise in corporate governance has been recognized by his being appointed a member of the Advisory Board of the Drexel University Business School Corporate Governance Program.