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): December 17, 1998 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. Reference is hereby made to the Registrant's press releases attached hereto as Exhibits 99.1, 99.2, 99.3 and 99.4 which meet the requirements for filing under Item 5 and are incorporated herein by reference. Item 7. Financial Statements and Exhibits. Exhibits - -------- 99.1 Press Release dated December 17, 1998. 99.2 Press Release dated January 12, 1999. 99.3 Press Release dated January 26, 1999. 99.4 Press Release dated January 27, 1999. 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: February 4, 1999 By: /s/ Linda M. Iannone -------------------- Linda M. Iannone Senior Vice President and General Counsel 3 Exhibit Index ------------- 99.1 Press Release dated December 17, 1998 99.2 Press Release dated January 12, 1999 99.3 Press Release dated January 26, 1999 99.4 Press Release dated January 27, 1999