Alan Courtney "Ace" Greenberg was a chairman of the executive committee of The Bear Stearns Companies, Inc.

The Bear Stearns Companies, Inc. was an American investment bank, securities trading, and brokerage firm that failed in 2008 as part of the global financial crisis and recession. After its closure it was subsequently sold to JPMorgan Chase. The company's main business areas before its failure were capital markets, investment banking, wealth management, and global clearing services, and it was heavily involved in the subprime mortgage crisis.