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Chicago regional headquarters

Chicago regional headquarters

Chicago regional headquarters
Chicago regional headquarters

One IBM Plaza (330 North Wabash Avenue) opened in 1971 and was officially dedicated on September 20, 1972. Shortly after its construction, One IBM Plaza won the Federal Energy Commission's first Midwest Excellence Award for Energy Conservation. In the 1970s, the facility served as the Midwestern Region headquarters of the IBM Data Processing Division.

In 1996, Blackstone Partners acquired the building from IBM, and later sold it to Prime Group LLC.

In 2005, most of the remaining IBM employees in the building -- approximately 700 people -- relocated to new space in the Hyatt Center at 71 South Wacker Drive in Chicago. They occupy approximately 125,000 square feet in four floors of the new building. Some 70 IBM people remained at One IBM Plaza on a government industry parking project.

The IBM Data Processing Division details