Complex sentence: 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.
Split into simpler sentences: 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.