content: <PAGE>
  
                        SECURITIES AND EXCHANGE COMMISSION
                              Washington, D.C. 20549
  
  
                                     FORM 8-K
  
  
                              Current Report Pursuant
                           to Section 13 or 15(d) of the
                          Securities Exchange Act of 1934
  
        Date of Report (Date of earliest event reported): October 13, 2000
  
  
                                Greater Bay Bancorp
              (Exact name of registrant as specified in its charter)
  
  
  
             California                            77-0387041
  (State or other jurisdiction of                 (I.R.S. employer
   incorporation or organization)                  identification number)
  
  
                         Commission file number:  0-25034
  
  
                              2860 West Bayshore Road
                            Palo Alto, California 94303
               (Address of principal executive offices and zip code)
  
  
         Registrant's telephone number, including area code: (650) 813-8200
  <PAGE>
  
  Item 5.  Other Events.
  
        On October 13, 2000, Greater Bay Bancorp (the "Registrant") consummated
  its acquisition of Bank of Petaluma ("BOP") pursuant to an Agreement and Plan of
  Reorganization, dated as of March 21, 2000 (the "Agreement"), providing for the
  merger of DKSS Corp. ("Newco"), a wholly owned subsidiary of the Registrant,
  with and into BOP (the "Merger"). As a result of the Merger, BOP became a wholly
  owned subsidiary of GBB.
  
        In accordance with the Agreement, former shareholders of BOP received
  0.5731 shares (pre-split) of the Registrant's common stock in exchange for each
  of their shares of BOP common stock. The Merger was accounted for as a pooling
  of interests.  The exchange ratio will be adjusted to reflect the Registrant's
  two-for-one stock split effective October 4, 2000, to be distributed October 18,
  2000.
  
        The Registrant issued a press release announcing completion of the Merger
  on October 16, 2000, a copy of which is attached hereto as Exhibit 99.1.
  
        For a more detailed discussion of the terms and conditions of the
  Agreement and the Merger, reference is made to the Registrant's Registration
  Statement on Form S-4 (Registration No. 333-40238) filed with the Securities and
  Exchange Commission on June 27, 2000, as amended by Amendment No. 1 thereto
  filed with the Securities and Exchange Commission on August 8, 2000,
  incorporated herein by this reference.
  
  Item 7.  Financial Statements and Exhibits.
  
  Exhibits
  --------
  
  2.1   Agreement and Plan of Reorganization, dated as of March 21, 2000, by and
        among Greater Bay Bancorp, DKSS Corp. and Bank of Petaluma (incorporated
        by reference from the Registrant's Current Report on Form 8-K filed March
        22, 2000)
  
  99.1  Press Release issued October 16, 2000
  
                                         2
  <PAGE>
  
                                     SIGNATURES
  
        Pursuant to the requirements of the Securities Exchange Act of 1934, as
  amended, the Registrant has duly caused this report to be signed on its behalf
  by the undersigned hereunto duly authorized.
  
                                           Greater Bay Bancorp
                                           (Registrant)
  
  
  
  Dated: October 16, 2000               By    /s/ Linda M. Iannone
                                              --------------------
                                              Linda M. Iannone
                                              Senior Vice President and General
                                              Counsel
  
                                         3
  <PAGE>
  
                                   Exhibit Index
                                   -------------
  
  2.1   Agreement and Plan of Reorganization, dated as of March 21, 2000, by and
        among Greater Bay Bancorp, DKSS Corp. and Bank of Petaluma (incorporated
        by reference from the Registrant's Current Report on Form 8-K filed March
        22, 2000)
  
  99.1  Press Release issued October 16, 2000
  
                                         4
metadata_documents: [{"type": "8-K", "sequence": "1", "filename": "0001.txt", "description": "CURRENT REPORT ON FORM 8-K", "secsgml_size_bytes": 4042}]
metadata_filer: {"company-data": {"conformed-name": "GREATER BAY BANCORP", "cik": "0000775473", "assigned-sic": "6021", "irs-number": "770387041", "state-of-incorporation": "CA", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-25034", "film-number": "740664"}, "business-address": {"street1": "2860 WEST BAYSHORE ROAD", "city": "PALO ALTO", "state": "CA", "zip": "94303", "phone": "4153751555"}, "mail-address": {"street1": "2860 BAYSHORE ROAD", "street2": "420 COWPER ST", "city": "PALO ALTO", "state": "CA", "zip": "943011504"}, "former-company": [{"former-conformed-name": "MID PENINSULA BANCORP", "date-changed": "19941031"}, {"former-conformed-name": "SAN MATEO COUNTY BANCORP", "date-changed": "19920703"}]}
text: SECURITIES AND EXCHANGE COMMISSION
                              Washington, D.C. 20549
  
                                     FORM 8-K
  
                              Current Report Pursuant
                           to Section 13 or 15(d) of the
                          Securities Exchange Act of 1934
  
        Date of Report (Date of earliest event reported): October 13, 2000
  
                                Greater Bay Bancorp
              (Exact name of registrant as specified in its charter)
  
             California                            77-0387041
  (State or other jurisdiction of                 (I.R.S. employer
   incorporation or organization)                  identification number)
  
                         Commission file number:  0-25034
  
                              2860 West Bayshore Road
                            Palo Alto, California 94303
               (Address of principal executive offices and zip code)
  
         Registrant's telephone number, including area code: (650) 813-8200
  Item 5.  Other Events.
  
        On October 13, 2000, Greater Bay Bancorp (the "Registrant") consummated
  its acquisition of Bank of Petaluma ("BOP") pursuant to an Agreement and Plan of
  Reorganization, dated as of March 21, 2000 (the "Agreement"), providing for the
  merger of DKSS Corp. ("Newco"), a wholly owned subsidiary of the Registrant,
  with and into BOP (the "Merger"). As a result of the Merger, BOP became a wholly
  owned subsidiary of GBB.
  
        In accordance with the Agreement, former shareholders of BOP received
  0.5731 shares (pre-split) of the Registrant's common stock in exchange for each
  of their shares of BOP common stock. The Merger was accounted for as a pooling
  of interests.  The exchange ratio will be adjusted to reflect the Registrant's
  two-for-one stock split effective October 4, 2000, to be distributed October 18,
  2000.
  
        The Registrant issued a press release announcing completion of the Merger
  on October 16, 2000, a copy of which is attached hereto as Exhibit 99.1.
  
        For a more detailed discussion of the terms and conditions of the
  Agreement and the Merger, reference is made to the Registrant's Registration
  Statement on Form S-4 (Registration No. 333-40238) filed with the Securities and
  Exchange Commission on June 27, 2000, as amended by Amendment No. 1 thereto
  filed with the Securities and Exchange Commission on August 8, 2000,
  incorporated herein by this reference.
  
  Item 7.  Financial Statements and Exhibits.
  
  Exhibits
  --------
  
  2.1   Agreement and Plan of Reorganization, dated as of March 21, 2000, by and
        among Greater Bay Bancorp, DKSS Corp. and Bank of Petaluma (incorporated
        by reference from the Registrant's Current Report on Form 8-K filed March
        22, 2000)
  
  99.1  Press Release issued October 16, 2000
  
                                         2
  SIGNATURES
  
        Pursuant to the requirements of the Securities Exchange Act of 1934, as
  amended, the Registrant has duly caused this report to be signed on its behalf
  by the undersigned hereunto duly authorized.
  
                                           Greater Bay Bancorp
                                           (Registrant)
  
  Dated: October 16, 2000               By    /s/ Linda M. Iannone
                                              --------------------
                                              Linda M. Iannone
                                              Senior Vice President and General
                                              Counsel
  
                                         3
  Exhibit Index
                                   -------------
  
  2.1   Agreement and Plan of Reorganization, dated as of March 21, 2000, by and
        among Greater Bay Bancorp, DKSS Corp. and Bank of Petaluma (incorporated
        by reference from the Registrant's Current Report on Form 8-K filed March
        22, 2000)
  
  99.1  Press Release issued October 16, 2000
  
                                         4