LAKE SUCCESS, N.Y. — DealerTrack Holdings Inc. announced recently that Thomas R. Gibson has resigned from its board of directors. The company had previously announced that it expected Gibson to resign, as his role as a senior advisor to Cerberus LLC made it difficult for him to continue to fulfill his responsibilities on the DealerTrack board.

"Tom Gibson has made many significant contributions to DealerTrack's growth, and we would like to thank him for his dedicated service," said Mark O'Neil, DealerTrack's chairman and chief executive officer.

Gibson said, "I cannot express how much I have enjoyed working with DealerTrack's senior management and my fellow board members over the past three years. I believe Mark and his team are doing a terrific job and should be immensely proud of the company they have built, the results they have achieved, and the bright future I foresee for the company."