Pacific Western will provide banking services to Security Pacific Bank's former customers, and will operate Security Pacific Bank's four branches beginning Monday, November 10, under the Pacific Western Bank name. Customers of both banks should continue to use their existing branches until Pacific Western can fully integrate the deposit records of Security Pacific Bank. After this transition period, Security Pacific Bank's customers will gain access to Pacific Western's 60 existing locations throughout Los Angeles, Orange, Riverside, San Bernardino and San Diego Counties.

Pacific Western will work with Security Pacific Bank's employees to identify potential job opportunities with Pacific Western Bank.

ABOUT PACWEST BANCORP

PacWest Bancorp is a bank holding company with $4.4 billion in assets as of September 30, 2008, with one wholly-owned banking subsidiary, Pacific Western Bank. Through 60 full-service community banking branches and 4 branches of the former Security Pacific Bank, Pacific Western provides commercial banking services, including real estate, construction and commercial loans, to small and medium-sized businesses. Pacific Western's branches are located in Los Angeles, Orange, Riverside, San Diego and San Bernardino Counties. Through its subsidiary BFI Business Finance and its divisions First Community Financial and Pacific Western SBA Lending, Pacific Western also provides working capital financing to growing companies located throughout the Southwest, primarily in the states of Arizona, California and Texas. Additional information regarding PacWest Bancorp is available on the Internet at http://www.pacwestbancorp.com/. Information regarding Pacific

Western Bank is also available on the Internet at http://www.pacificwesternbank.com/. PR Newswire