Marathon Bancorp is a bank holding company whose sole subsidiary, Marathon Bank, is a community-oriented savings bank headquartered in Wisconsin that originates and holds a portfolio of commercial real estate, multifamily residential, single-family residential, construction, and consumer loans, with particular strategic focus on fixed-rate commercial and multifamily real estate lending. The bank funds its operations through deposits—including demand accounts, checking, money market, savings accounts, and certificates of deposit—gathered primarily from residents in its core counties while extending its lending into the broader southeastern Wisconsin and Milwaukee metropolitan markets. Revenue is generated through net interest income on its loan and investment portfolio, deposit spreads, and fee income from deposit services and loan origination and servicing activities.