Citizens Business Bank Earns Five-Star Rating from BauerFinancial Inc.

ONTARIO, Calif.--(Business Wire)--
Citizens Business Bank announced that BauerFinancial Inc. awarded Citizens its
highest ranking: Five Stars.

"We are proud to receive this Five Star Rating, especially considering the
challenging times for our industry," stated Chris Myers, President and Chief
Executive Officer. The rating was based on March 31, 2009 performance data.

BauerFinancial Inc. star ratings classify each institution based upon a complex
formula factoring in current and historical data. The first level of evaluation
is the capital level of the institution followed by other relevant data
including, but not limited to: profitability, historical trends, loan
delinquencies, repossessed assets, reserves, regulatory compliance, proposed
regulations and asset quality. BauerFinancial employs conservative measures when
assigning these ratings.

Citizens Business Bank, with $6.4 billion in assets, is the wholly owned
subsidiary of CVB Financial Corp. based in Ontario, California. Citizens
Business Bank serves 40 cities through 42 business financial centers and five
commercial banking centers in the Inland Empire, Orange and Los Angeles Counties
and communities throughout the Central Valley of California. The Bank`s trust
and asset management division, CitizensTrust, has $2.2 billion in assets under
administration.

Shares of CVB Financial Corp. common stock are listed on the NASDAQ under the
ticker symbol of CVBF. For more information, please visit our website at
www.cbbank.com.

Citizens Business Bank
Christopher D. Myers
President and CEO
909-980-4030

Copyright Business Wire 2009