After leaving GRP in 1995 , Mr. Rosen went on to co-found one of the first Internet e-commerce and content companies , N2K , Inc. ( NASDAQ ) , in 1997 serving as its Chairman and CEO Rosen lead the company to an IPO offering .
After leaving GRP in 1995 , Mr. Rosen went on to co-found one of the first Internet e-commerce and content companies , N2K , Inc. ( NASDAQ ) , in 1997 . 
 Serving as its Chairman and CEO Rosen lead the company to an IPO offering .