UTHR board approves new $500M repurchase program

United Therapeutics Corp. (NASDAQ:UTHR) said its board authorized the repurchase of up to $500 million of the company's common stock in a one-year share repurchase program. Additionally, the company said it completed a $420 million repurchase program announced in February 2013 through the repurchase of about 4.6 million shares. United Therapeutics had $1.1 billion in cash as of March 31 and 48.2 million shares outstanding as of April 22. ...