NSTS Bancorp, Inc. operates as a savings and loan holding company for North Shore Trust and Savings that provides banking products and services in Illinois. The company offers interest-bearing and noninterest-bearing checking, money market, savings, and time deposit accounts; and one- to four-family residential mortgages, multifamily and commercial real estate mortgages, construction, consumer loans, other collateral and unsecured personal loans. It also provides online banking services. The company operates through full-service banking offices in Lake County, Illinois; and three loan production offices in Chicago, Plainfield, and Aurora. NSTS Bancorp, Inc. was founded in 1921 and is headquartered in Waukegan, Illinois.