ABM Industries Incorporated is a facilities management company.
The company was founded in 1909 by Morris Rosenberg as a window-cleaning company. In 1913 Morris incorporated the company as American Building Maintenance.
In the 1920’s and 1930’s the company began to add services such as janitorial services and annual cleaning services.
Today ABM Industries offers janitorial services to operators of hospitals, manufacturing plants, schools, office buildings, transportation facilities, and shopping centers throughout the United States as well as in Canada and Puerto Rico.
Its division Ampco System Parking operates 1,800 parking garages and lots across 35 states, mainly at airports.
The company is publicly traded on the New York Stock Exchange under the ticker symbol ABM, is a member of the S&P 600, is a member of the Russell 2000, is #512 in the Fortune 1000, has 110,000 employees, and had 4.97 billion in revenue in 2013.