Barnes & Noble says Chief Financial Officer Joseph Lombardi has resigned and the company is starting a search to replace him.
Lombardi will stay on with the company until mid-2012 to assist in the transition.
Corporate Controller Allen Lindstrom will take over CFO duties until a replacement is named.
Barnes & Noble is dealing with the same tough competition and changing book-reading habits that forced its rival Borders Group to liquidate earlier this year. The company has focused on its e-book reader the Nook and its digital media library in an effort to improve results.
In its most recent quarter the New York company reported a narrower loss as revenue edged up 2 percent to $1.42 billion.
Lombardi joined the company nine years ago.