Northrop Grumman was formed by the 1994 purchase of Grumman by Northrop.
Northrop was founded in 1939 by Jack Northrop as Northrop Corporation in the airplane manufacturing industry.
Grumman Aircraft Engineering Corporation was founded in 1929. The company later became famous for building the Apollo Lunar Module.
Northrop Grumman acquired Westinghouse Electronic Systems, a major manufacturer of radar systems, in 1996. The company acquired Logicon, a defense computer contractor, in 1997.
Northrop Grumman and Lockheed Martin were set to merge in 1998 but the merger was blocked by the U.S. Government on anti-trust grounds.
The company continued to grow through acquisitions, notably Teledyne Ryan, which developed surveillance systems in 1999, Litton Industries, a shipbuilder and a provider of defense electronic systems to the U.S. Navy, and and Newport News Shipbuilding Company, both in 2001.
In 2013 Northrop Grumman won a contract to support the U.S. Air Force’s next generation air combat virtual training network.
Today Northrop Grumman is a global aerospace and defense technology company. The company has 68,000 employees and had revenue of $25.218 billion in 2012.