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oversee the entire operation, the company adds a formal <br />security services subsidiary, ASMI Security Services. <br />1972 The stock of the Company is listed on the New York Stock <br />Exchange <br />1962 The company moves into several more cities, marked by ABM's <br />parking services assuming management of its first parking <br />garage in New York City, and the lighting subsidiary opening <br />branches in Dallas and Denver, The security subsidiary entered <br />the Dallas and Oklahoma markets while ABM's janitorial <br />subsidiary also opens an office in downtown Boston, a key to its <br />eventual expansion plans for New England, <br />1991 In the facility services arena, ABM Engineering Services <br />becomes a separate subsidiary. <br />ASi <br />9ullding Wtu® <br />1994 To reflect the diversification of American Building Maintenance Industries into complete facility services, <br />the company's name is changed to ABM Industries Incorporated, <br />2002 ABM made what was then Its largest and one of the most important acquisitions in its history with the <br />purchase of Chicago -based Lakeside Building Maintenance Inc., the largest privately owned janitorial <br />contractor In the Midwest. <br />2007 ABM acquires OneScurce Services and further strengthens growth prospects in the global market <br />2010 ABM acquires Diversco, Inc. strategically expanding <br />ABM's janitorial and security businesses <br />2010 ABM acquires The Linc Group, LLC enhancing and ONESOURCE <br />transforming our engineering and energy businesse <br />THE <br />Ly. 0i <br />Grou <br />Corridential and Proprietary <br />