UB Unionbancal Corp

Union Bank of California, N.A., announced today that it has lowered its reference rate to 4.00 percent from 4.50 percent. Based in San Francisco, UnionBanCal Corporation (NYSE: UB) is a bank holding company with assets of $62.6 billion at September 30, 2008. Its primary subsidiary, Union Bank of California, N.A., had 336 banking offices in California, Oregon and Washington, and 2 international offices at September 30, 2008. The company's Web site is located at www.unionbank.com.