GBBK Global Blockchain Acquisition Corporation

The Board of Directors of Greater Bay Bancorp (Nasdaq:GBBK), a $7.4 billion in assets financial services holding company, declared a quarterly cash dividend of $0.16 per common share outstanding to shareholders of record as of April 13, 2007. The dividend is payable on April 30, 2007. �This dividend represents a 1.6% increase over the Company�s previous quarterly dividend of $0.1575 per common share and is the 59th consecutive cash dividend paid by Greater Bay Bancorp,� stated Byron A. Scordelis, President and Chief Executive Officer of Greater Bay Bancorp. �This increase in our dividend recognizes our strong capital position and reflects our continued desire to recognize and reward our shareholders for their support.� About Greater Bay Bancorp Greater Bay Bancorp, a diversified financial services holding company, provides community banking services in the Greater San Francisco Bay Area through Greater Bay Bank, N.A.�s community banking organization, including Bank of Petaluma, Coast Commercial Bank, Golden Gate Bank, Mid-Peninsula Bank, Mt. Diablo National Bank, Peninsula Bank of Commerce and Santa Clara Valley National Bank. Nationally, Greater Bay Bancorp provides specialized leasing and loan services through its specialty finance group, which includes Matsco, Greater Bay Business Funding and Greater Bay Capital. ABD Insurance and Financial Services, the Company�s insurance brokerage subsidiary, provides commercial insurance brokerage, employee benefits consulting and risk management solutions to business clients throughout the United States. For additional information and press releases about Greater Bay Bancorp, visit the Company�s web site at http://www.gbbk.com. Safe Harbor This document may contain forward-looking statements that are subject to risks and uncertainties that could cause actual results to differ materially from those projected. For a discussion of factors that could cause actual results to differ, please see the publicly available Securities and Exchange Commission filings of Greater Bay Bancorp, including its Annual Report on Form 10-K for the year ended December 31, 2006 and particularly the discussion of risk factors within such documents.