FS Bancorp Inc is the holding company of 1st Security Bank, a diversified lender with a focus on the origination of commercial real estate, one-to-four-family, and home equity loans, consumer loans, including a variety of indirect home improvement (fixture secured loans), and marine loans, and commercial business loans. The company has two operating segments; The commercial and consumer banking segment provides diversified financial products and services to its commercial and consumer customers through Bank branches, automated teller machines, online banking platforms, mobile banking apps, and telephone banking; and The home lending segment originates one-to-four-family residential mortgage loans for sale in the secondary markets as well as loans held for investment.