On June 13, 2022, West Suburban Bancorp was acquired by Old Second Bancorp, Inc. in a transaction valued at approximately $297 million. You can find official details on the merger via the Old Second Bancorp Investor Relations page.

Founded in 1962 and headquartered in Lombard, Illinois, the bank grew to over 40 branches across DuPage, Kane, Kendall, and Will counties.

Some architectural studies, such as this site analysis of Minya , discuss the "west suburban banks" of the Ibrahimiya Canal and how infrastructure improvements led to residential growth on former agricultural land. 3. Structural Outline for a Paper