Five Star Bancorp is the holding company for Five Star Bank, a California state-chartered community bank focused on small and medium-sized businesses in Northern California, primarily the Greater Sacramento Area. The bank had $4.8B in total assets as of December 31, 2025. Five Star Bank's core product is CRE lending, which makes up roughly 81% of the loan portfolio, covering multifamily, owner-occupied commercial, mobile home parks, RV parks, self-storage, student housing, and faith-based facilities. The bank underwrites these primarily as cash flow loans at conservative LTV ratios. Beyond core CRE, Five Star Bank operates several specialty lending verticals, most notably a national MHC, RV park, and self-storage platform originating deals across 27+ states — a niche where management argues few banks have comparable expertise. The bank launched a food and agribusiness vertical in 2025 targeting large West Coast processors and producers, intended to diversify away from CRE over time. Five Star Bank operates on a relationship-driven model with roughly 42 dedicated business development officers responsible for sourcing both loans and core deposits. The bank earns money primarily through net interest income — taking in deposits and lending at higher rates — with NIM of 3.55% in FY2025. Growth is entirely organic, driven by BDO hiring and geographic expansion, particularly into the San Francisco Bay Area, where Five Star Bank is targeting the South Bay and Peninsula as its next markets.