Lehman Brothers Inc. was an American global financial services firm founded in 1850. Before filing for bankruptcy in 2008, Lehman was the fourth-largest investment bank in the United States, with about 25,000 employees worldwide. It was doing business in investment banking, equity, fixed-income and derivatives sales and trading, research, investment management, private equity, and private banking. Lehman was operational for 158 years from its founding in 1850 until 2008.

The American subprime mortgage crisis was a multinational financial crisis that occurred between 2007 and 2010 that contributed to the 2007–2008 global financial crisis. The crisis led to a severe economic recession, with millions of people losing their jobs and many businesses going bankrupt. The U.S. government intervened with a series of measures to stabilize the financial system, including the Troubled Asset Relief Program (TARP) and the American Recovery and Reinvestment Act (ARRA).