Winchester Bancorp, Inc. focuses on operating as the bank holding company for Winchester Savings Bank that provides banking products and services in Massachusetts. It offers non-interest-bearing checking, interest-bearing checking, money market, and savings accounts, as well as certificates of deposit; and one- to four-family residential real estate loans, multi-family residential real estate loans, construction loans, commercial real estate loans, home equity loans and lines of credit, commercial business loans, and consumer loans, as well as invests in securities. The company was incorporated in 2024 and is based in Winchester, Massachusetts. Winchester Bancorp, Inc. is a subsidiary of Winchester Bancorp, MHC.