Ah, it may have been related to this (though I believe it came after): "The decision comes as officials also announced Rothblatt will share the CEO mantle begi

Ah, it may have been related to this (though I believe it came after): "The decision comes as officials also announced Rothblatt will share the CEO mantle beginning Jan. 1 with Roger Jeffs, who joined United Therapeutics in 1998 and currently serves as president and chief operating officer. He will become co-chief executive. Fisher said Jeffs’ promotion “reflects a division in responsibilities that the two of them have had for sometime.” Rothblatt focuses on long-term strategy and research, while Jeffs handles commercial operations and near-term research, he said. David Zaccardelli will subsequently be promoted to executive vice president and chief operating officer. Zaccardelli, who joined the company a decade ago, holds the titles of chief manufacturing officer and executive vice president of pharmaceutical development." So basically she'll be splitting her responsibilities with two guys and the CEO title with one of them and is giving up basically all operational control to focus on strategy and "long term research". Maybe that's a good choice and something she wants, but it looks a bit like a demotion. She may not have one foot out the door, but I'm guessing she's got ideas for a few more multi-billion dollar companies if she gets tired of UT.