This article is from the of the muppets FAQ, by Craig Silverstein with numerous contributions by others.
The Henson family now owns the company (having bought it back from EM.TV) and also runs it. Brian Henson and Lisa Henson are co-chairs and co-CEOs. The Board of Directors consists of all five Henson children plus Charles Rivkin (who was President and CEO before and during the EM.TV period). Peter Schube, President and COO, is the other major senior executive not from the Henson clan.