Ms. Asmodeo-Giglio resigned "to focus on her personal endeavors and professional next steps," the company said in a statement.
"I am grateful to Ellen for taking Travel & Leisure to remarkable heights," said Ed Kelly, president-CEO, American Express. "We have spoken about her desire to move on, and I respect her decision to add a little more leisure to her travel as she charts her next chapter."
Ad pages at Travel & Leisure totaled 925.4 during the first half of this year, 16.9% above the first half of 2005, according to the Publishers Information Bureau. Last year, pages contracted 4.2%. The title reported average paid circulation of 957,849 for the second half of last year, according to the Audit Bureau of Circulations, down slightly from 968,115 in the second half of 2004.
Mr. Kelly is seeking a successor to Ms. McGowan at Food & Wine both inside and outside the company. Food & Wine ad pages grew 8% in the first half and fell 5.8% last year. It reported average paid circulation of 914,268 for the second half of last year, close to the 927,188 it reported for the second half of 2004.