Later the company Sears was the owner since it had the majority of the shares of said building 4 or 5 years ago the company willis mills co. Acquired a majority of those shares buying them to Seats so the building or tower will be named after Torre Willis.
The Willis Tower or Willis Tower is a 442-meter skyscraper in Chicago, Ill. At the time of its inauguration, it was the tallest building in the world, surpassing the World Trade Center in New York, and continued to be so for more than 20 years. . Wikipedia
A company from England buys the rights to give this name. This company is called Willis.
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