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Ruth Ann M. Gillis

Ruth Ann M. Gillis

Executive Vice President & Chief Administrative Officer, Exelon Corporation and President, Exelon Business Services Company


As chief administrative officer and president, Exelon Business Services Company (BSC), Gillis, 59, is responsible for providing oversight for transactional and corporate services to the Exelon operating companies, including information technology, supply chain and real estate, as well as other advisory, professional, technical and support services.  Gillis is also a member of Exelon’s Executive, Corporate Investment and Corporate Risk Management committees as well as a member of the Exelon Foundation board of directors.

Professional History

Prior to her current position, Gillis was responsible for areas including field operations, customer satisfaction, public/external affairs, and real estate and property management for ComEd as executive vice president, ComEd. From Exelon’s inception in October 2000 until October 2002, Gillis served as chief financial officer of Exelon Corporation. Prior to the merger, she was CFO of Unicom Corporation.  In addition, she was senior vice president of competitive operations, which included customer service operations, marketing and sales and new business development, all residing in ComEd.  Gillis also was responsible for the unregulated businesses residing in Unicom Enterprises, Inc., and Unicom Resources.  She joined the company in 1997 as vice president and treasurer of Unicom Corporation.  As treasurer, Gillis was responsible for the corporation’s financing activities, cash management, financial risk management and treasury functions.

Before joining Unicom, Gillis was CFO, treasurer and vice president of the University of Chicago Hospitals and Health System.  Her responsibilities included oversight of all aspects of corporate finance and treasury for a $600 million health care system anchored by the University of Chicago Hospitals.

From 1977 through 1995, Gillis worked for First Chicago Corporation (now JPMorgan Chase & Co.), where she held a variety of lending and staff positions.


Civic and Board Involvement

Gillis donates her time to various community organizations.  She is a sustaining member of the University of Chicago Cancer Research Foundation Women’s Board and a member of the Foundation’s Board of Trustees. She serves as chairman of the Goodman Theatre’s board of trustees, a Trustee of The Field Museum and a board member of the Lyric Opera of Chicago and Skills for Chicagoland’s Future. Gillis also serves as a co-chair and Visionary Delegate for the Vision 2020 initiative.  She is a member of the Chicago Network, Economic Club of Chicago and Commercial Club of Chicago. Gillis serves on the boards of KeyCorp (NYSE:KEY) and KeyBank and recently retired from the board of Potlatch Corporation (NASDAQ:PCH).


Gillis received her bachelor’s degree in economics from Smith College in Northampton, Massachusetts.  She was distinguished as Phi Beta Kappa and graduated magna cum laude with high honors in 1977.  In 1980, she graduated with a master’s degree in business administration from the University of Chicago Graduate School of Business, with a concentration in finance.


Gillis and her husband reside in Chicago and have two sons.

Time and Tide: Leading the Way to a Low-Carbon Future [PDF 1.89 MB]On September 22, 2008, Ruth Ann Gillis delivered the keynote speech, “Time and Tide: Leading the Way to a Low-Carbon Future” at the Corporate Climate Response conference.PDFPDFs require software like the Adobe Acrobat Reader to be viewed properly.

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Profile: Ruth Ann M. Gillis [PDF 98KB]Executive Vice President & Chief Administrative Officer, Exelon Corporation; President, Exelon Business Services CompanyPDFPDFs require software like the Adobe Acrobat Reader to be viewed properly.

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Ruth Ann M. Gillis