New CEO Named for Aetna
Aetna Inc., the third-largest health insurer in the US, has announced that its Chairman and current Chief Executive Officer, Ronald A. Williams, will be succeeded by the end of November 2010 by Mark T. Bertolini, current President of Aetna. Mr. Williams intends to retire, and will stay on as executive chairman until April 2011, when this role will also be assumed by Mr. Bertolini.