Founded in 1909 and headquartered in San Francisco, California, ABM Industries Incorporated (ABM) provides engineering, janitorial, lighting, parking, and security services to thousands of commercial, industrial, institutional, and retail facilities across the United States as well as Puerto Rico and British Columbia, Canada. The company has a broad and diverse customer base, with no one customer accounting for more than 5% of the company's revenue. The company employs over 105,000 people. Following the sale of all of the operating assets of the company's wholly-owned subsidiary, CommAir Mechanical Services (Mechanical), in the third quarter of FY05, the segment was classified as a discontinued operation. Additionally, the facility services were included in the Engineering segment. As a result, the company now conducts business through the following five segments:

ABM Janitorial (57% of fiscal 2007 revenue) provides a wide range of basic janitorial services for a variety of facilities.

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