National Bank & Trust, (Kokomo, Indiana) followed by Ozaukee Bank, (Cedarburg, Wisconsin) and Merchant and Manufacturers Bankcorp Inc., (New Berlin, Wisconsin) in 2008 and Amcore Bank N.A. (Rockford, Illinois) on April 23, 2010. On December 17, 2010, Bank of Montreal agreed to purchase Milwaukee-based Marshall & Ilsley Corporation in an all-stock transaction valued at about US$4.1 billion. Marshall & Ilsley and Harris Bankcorp were both rebranded as BMO Harris. The company restructured as BMO Bankcorp July 5, 2011. In December 2015, the company completed its acquisition of General Electric Capital Corp.'s transportation finance business. BMO was the bank with the second-most deposits in Chicago by June 2018, with 11.5% market share. Also that month, its BMO Harris division was operating in eight states in the US. In December 2021, Bank of Montreal agreed to purchase Bank of the West with the intent on merging it with BMO Harris Bank, which would at least double its U.S. presence. The acquisition of Bank of the West was completed in February 2023, and the Bank of the West brand is planned to be absorbed into the global BMO brand by September 2023. Coinciding with this merger, BMO Harris Bank announced that it will retire the combined "BMO Harris" brand and will also start to primarily do business under the global BMO brand of its Canadian parent company. Operations BMO Harris Bank is one of the largest banks in the Midwest with over 600 branches and approximately 1,300 ATMs in Illinois, Wisconsin, Indiana, Kansas, Missouri, Minnesota, Arizona, Florida and California. It is the second-largest Chicago-area bank based on market share, behind JPMorgan Chase, and the second largest US subsidiary of a Canadian bank after TD Bank, N.A. (owned by the Toronto-Dominion Bank). BMO Harris Bank, N.A. is the issuer of the Diners Club cards in United States. Headquarters BMO Harris is headquartered in a complex of three buildings in Chicago's Loop neighborhood. The original 21-story building was constructed in 1910 at 119 West Monroe Street. The entrance to the building is flanked by two bas-relief sculptures of lions, which inspired various iterations of the bank's logo until 2011, along with the bank's mascot character, Hubert the Lion. In 1960, a 23-story structure was added to the east with the address of 111 West Monroe. In 1974, a second 38-story tower was added to the west with the address of 115 South LaSalle Street. Both