NSTS Bancorp Inc (NSTS) is a community banking holding company that operates North Shore Trust and Savings, a federally chartered stock savings institution serving Lake County, Illinois and adjacent communities. The company makes money by attracting deposits from the general public and deploying those funds into one- to four-family residential mortgage loans and investment securities, earning net interest income on the spread between deposit costs and loan and investment yields. North Shore Trust and Savings was established in 1921 as North Shore Building and Loan and operates from a headquarters and main banking office in Waukegan, Illinois, plus two additional full-service branch offices in Waukegan and Lindenhurst, Illinois, and three loan production offices in Chicago, Aurora, and Plainfield, Illinois, as of the 10-K filed March 27, 2026. The institution is regulated and examined by the Office of the Comptroller of the Currency.

Revenue model

Net interest income from loans (primarily one- to four-family residential mortgages) and investment securities funded by customer deposits. Supplementary noninterest income includes gain on sale of mortgage loans, rental income on office building, service charges on deposits, and increases in cash surrender value of bank-owned life insurance (BOLI), as reported for years ended December 31, 2025 and 2024.

Products and services

Deposit accounts including noninterest-bearing demand and NOW checking, time deposits, and escrow deposits. One- to four-family residential mortgage loan origination, mortgage loan sales, and investment securities. FHLB of Chicago advances used for funding. Three loan production offices support mortgage origination in the Chicago metropolitan area.

Customers and end markets

General public depositors and residential mortgage borrowers in Lake County, Illinois and surrounding communities. Primary end market is owner-occupied one- to four-family residential real estate. Also serves low- and moderate-income borrowers under Community Reinvestment Act obligations.

Value-chain role

Retail deposit gatherer and residential mortgage originator. Originates and holds residential mortgage loans on balance sheet and sells some loans into the secondary market. Functions as a traditional community savings institution with no disclosed wholesale or correspondent banking activities.

Geographic exposure

Concentrated in Lake County, Illinois and adjacent communities. Physical presence in Waukegan and Lindenhurst, Illinois (three offices), with loan production offices in Chicago, Aurora, and Plainfield, Illinois, as of the 10-K filed March 27, 2026.

Source: SEC 10-K, filed 2026-03-27

Industry: Savings Institution, Federally Chartered Peers: 1895 Bancorp of Wisconsin Inc Catalyst Bancorp Inc CFSB Bancorp, Inc. /MA/ First Seacoast Bancorp IF Bancorp, Inc. Kentucky First Federal Bancorp Rocket Companies Inc