FS Bancorp, Inc. a operates as a bank holding company for 1st Security Bank of Washington that provides banking products and services primarily to small and middle-market businesses, and individuals in western Washington. It operates as a community-based stock owned savings bank. The company offers various deposit instruments, including checking accounts, money market deposit accounts, savings accounts, and certificates of deposit. It also provides commercial real estate mortgage loans, commercial business loans, residential construction and development loans, one-to-four-family residential first mortgages, and second mortgage/home equity loan products, as well as consumer loans, such as automobile-secured loans and home improvement loans. As of December 31, 2012, the company operated six branches in suburban communities in the greater Puget Sound area. FS Bancorp, Inc. is headquartered in Mountlake Terrace, Washington.