Pacific Western Bank

Pacific Western Bank was a California-based commercial bank that served small and middle-market businesses, entrepreneurs, and venture-backed companies. Before its acquisition, it offered commercial and real estate lending, venture banking, treasury management, and depository services, with a branch network concentrated in southern and central California.

The company was founded in October 1999 as First Community Bancorp. In 2006, First Community consolidated its two banking subsidiaries : Pacific Western National Bank and First National Bank : under the single Pacific Western Bank brand. In 2008 the holding company reincorporated in Delaware and was renamed PacWest Bancorp. Over the following decade it grew through acquisitions including Foothill Independent Bancorp (2005), CapitalSource (2014), and Square 1 Financial (2015).

Following deposit outflows during the 2023 U.S. regional banking crisis, PacWest Bancorp agreed to merge with Banc of California. The merger closed on December 1, 2023, and Pacific Western Bank was consolidated into Banc of California. The combined institution operates under the Banc of California name and brand; the Pacific Western Bank brand has been retired. Historical Pacific Western customers were transitioned to Banc of California services at bancofcal.com.