A Delaware corporation which was incorporated in September 2021. The offering of common stock by means of this prospectus is being made by NSTS Bancorp, Inc. in connection with the conversion of North Shore MHC from the mutual holding company structure to stock holding company structure. Upon completion of the conversion, NSTS Bancorp, Inc. will become the savings and loan holding company for North Shore Trust and Savings by owning all of the outstanding shares of capital stock of North Shore Trust and Savings.