Bank of Marin Bancorp Announces Quarterly Cash Dividend

Bank of Marin Bancorp ("the Bank”) (NASDAQ:BMRC) has announced that its Board of Directors has declared a quarterly cash dividend of $0.16 per share. The cash dividend is payable to shareholders of record at the close of business on May 5, 2011 and will be payable on May 13, 2011. The Bank has paid a dividend for the past 24 quarters.

"As a result of our strong financial performance, Bank of Marin is pleased to pay a dividend to our shareholders again this quarter,” said Russell Colombo, President and Chief Executive Officer. "We are seeing immediate increased shareholder value with the acquisition of Charter Oak Bank, which aligns very well with our long term strategic plans.”

About Bank of Marin Bancorp: Bank of Marin Bancorp's assets currently exceed $1.3 billion. Bank of Marin, as the sole subsidiary of Bank of Marin Bancorp, is the largest community bank in Marin County with 17 offices in Marin, San Francisco, Napa and Sonoma counties. The Bank's Administrative offices are located in Novato, California. Bank of Marin offers business and personal banking, private banking and wealth management services, with a strong focus on supporting the local community. Bank of Marin Bancorp is included in the Russell 2000 Small-Cap Index, is recognized as a Top 200 Community Bank, ranked number 42 in the U.S. by US Banker Magazine, and has received the highest five star rating from Bauer Financial for more than ten years (www.bauerfinancial.com). Celebrating its 21st anniversary in 2011, Bank of Marin has been recognized as one of the "Best Places to Work in the Bay Area" and one of the "Top Corporate Philanthropists" by the San Francisco Business Times.

Forward Looking Statements

This release may contain certain forward-looking statements that are based on management's current expectations regarding economic, legislative, and regulatory issues that may impact Bancorp's earnings in future periods. Forward-looking statements can be identified by the fact that they do not relate strictly to historical or current facts. They often include the words "believe," "expect," "intend," "estimate" or words of similar meaning, or future or conditional verbs such as "will," "would," "should," "could" or "may." Factors that could cause future results to vary materially from current management expectations include, but are not limited to, general economic conditions, the current financial turmoil in the United States and abroad, changes in interest rates, deposit flows, real estate values, and competition; changes in accounting principles, policies or guidelines; changes in legislation or regulation; and other economic, competitive, governmental, regulatory and technological factors affecting Bancorp's operations, pricing, products and services. These and other important factors are detailed in various securities law filings made periodically by Bancorp or the Bank, copies of which are available from Bancorp without charge. Bancorp undertakes no obligation to release publicly the result of any revisions to these forward-looking statements that may be made to reflect events or circumstances after the date of this press release or to reflect the occurrence of unanticipated events.