Summit Bank Corporation Announces Exercise of Over-Allotment of Options

Summit Bank Corporation (NASDAQ:SBGA) today
announced the full exercise by Keefe, Bruyette & Woods of its option
to purchase up to 187,500 shares of Summit common stock to cover
over-allotments from Summit's March 31, 2006 firm commitment
underwritten offering of 1.25 million shares of common stock at a
public offering price of $15.25 per share. The sale of the
over-allotment shares closed on April 25, 2006 and resulted in net
proceeds to Summit of approximately $2.7 million. Keefe, Bruyette &
Woods acted as the sole underwriter and book-running manager for the
offering.
   A registration statement relating to these securities has been
filed with, and declared effective by, the Securities and Exchange
Commission. This announcement shall not constitute an offer to sell or
the solicitation of an offer to buy, nor shall there be any sale of
these securities in any jurisdiction in which such offer, solicitation
or sale would be unlawful, prior to registration or qualification
under the securities laws of such jurisdiction.
   Copies of the prospectus relating to this offering may be obtained
from Keefe, Bruyette, & Woods, Inc., 787 Seventh Avenue, 4th Floor,
New York, NY 10019, Attention: Syndicate Department.

   Summit Bank Corporation is the parent company of The Summit
National Bank, a nationally chartered full-service community bank
specializing in the small business and international trade finance
markets. It currently operates five branches in the metropolitan
Atlanta area and two in the South Bay area of San Francisco,
California. Summit Bank completed the purchase of Concord Bank, N.A.
in Houston, Texas on April 1, 2006 for $23.7 million. Concord had
approximately $120 million in assets, $96 million in loans and $108
million in deposits at the closing date. Concord Bank now operates as
a division of Summit Bank in one location in Houston, Texas. Summit
also operates a loan production office in San Diego, California and a
representative office in Shanghai, China.