Marty Mosby, Chief Financial Officer, to Assume New Role at First Horizon

Mosby to Remain in CFO Role Until Year-End Financials are Filed and Successor is in Place


MEMPHIS, Tenn., Sept. 29, 2006 (PRIMEZONE) -- First Horizon National Corp. (NYSE:FHN) today announced that Marty Mosby will transition from the role of chief financial officer of First Horizon to assume a new position at one of First Horizon's three major business segments, FTN Financial. At FTN Financial, Mosby will focus on developing additional strategies to expand FTN Financial's revenue base. He has agreed to continue as CFO until year-end financial filings have been completed and his successor is in place.

First Horizon will engage a national recruiting firm to search for Mosby's replacement.

Speaking on behalf of management and the board of directors, Ken Glass, First Horizon's chief executive officer and chairman of the board, said, "Marty has served the company well as CFO, and we are delighted he will continue to make a difference for the corporation in his new role to help grow our business at FTN Financial. We appreciate his long hours, hard work and assumption of different responsibilities as our company has grown. This new position allows Marty to get valuable experience working with customers on the line side of our business. I've been aware of his desire to make a revenue-related contribution for some time now. I know he'll continue to add value to FTN Financial as he has with every job he's taken on. We thank him for his hard work and dedication as CFO and his commitment to stay on as acting CFO until we complete our search for his replacement."

Mosby joined First Horizon in 1988 as a financial analyst. Over the first 15 years he managed various financial functions including asset/liability management, investor relations and strategic planning before becoming chief financial officer in 2003. Over the last three years as chief financial officer Mosby has overseen the implementation of SARBOX 404 and the raising of approximately $1.5 billion in capital.

"I have been fortunate to work with a great team of people in finance over the years and am proud of the many accomplishments we have achieved. I am excited that Mark Medford, president at FTN Financial, has asked me to take on this new role, and I am looking forward to making a contribution to the work going on at FTN Financial," said Mosby.

About First Horizon

The 12,000 employees of First Horizon National Corp. (NYSE:FHN) provide financial services to individuals and business customers through hundreds of offices located in 40 states. The corporation's three major brands -- FTN Financial, First Horizon and First Tennessee -- provide customers with a broad range of products and services including:


  --  Capital markets, one of the nation's top underwriters of
      U.S. government agency securities
  --  Mortgage banking, one of the nation's top 25 mortgage
      originators and top 15 servicers, which earned a top-10
      ranking in customer satisfaction from J.D. Power and
      Associates
  --  Retail/Commercial banking, with the largest market share
      in Tennessee and one of the highest customer retention
      rates of any bank in the country

First Horizon companies have been recognized as some of the nation's best employers by AARP, Working Mother and Fortune magazines. First Horizon also was named one of the nation's 100 best corporate citizens by Business Ethics magazine. More information can be found at www.fhnc.com.



            

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