It seems that Northrop Grumman has bought the remaining 51% of Burt Rutan's "Scaled Composites" that it didn't own. The Grumman part of Northrop Grumman is probably best known as the builder of the Lunar Excursion Module of the Apollo program. As the company is ramping up for production for the Virgin Galactic spaceships, I guess that N-G saw a window of opportunity, or Mr. Rutan has decided to cash-out so that he can work on another project. The details and circumstances surrounding the buyout are not available at this time.