UNITED STATES 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): August 2, 2006 Community Bank System, Inc. (Exact name of registrant as specified in its charter) Delaware 001-13695 16-1213679 (State or other jurisdiction (Commission (IRS Employer of incorporation) File Number) Identification No.) 5790 Widewaters Parkway, DeWitt, New York 13214 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code: (315) 445-2282 -------------------------------------------------------------------------------- (Former name or former address, if changed since last report) Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: [ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) [ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) [ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) [ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Section 8 - Other Events Item 8.01 Other Events On August 2, 2006, Community Bank System, Inc. (the "Company") entered into an Agreement and Plan of Merger with ONB Corporation, a bank holding company headquartered in Clifton Springs, New York, to acquire Ontario National Bank in an all-cash transaction valued at $210 per share, or approximately $15.7 million in the aggregate. This acquisition, which is subject to regulatory approval and vote of ONB Corporation shareholders, is expected to close during the fourth quarter of 2006. Further details are contained in the press release attached hereto as Exhibit 99.1. Section 9 - Financial Statements and Exhibits Item 9.01 Financial Statements and Exhibits The following Exhibit is filed as an exhibit to this Form 8-K. Exhibit No. Description 99.1 Press Release, dated August 3, 2006, announcing the execution of a definitive merger agreement with ONB Corporation. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Community Bank System, Inc. By: /s/ Mark E. Tryniski --------------------- Name: Mark E. Tryniski Title: President and Chief Executive Officer Dated: August 7, 2006 EXHIBIT INDEX Exhibit No. Description 99.1 Press Release, dated August 3, 2006, announcing the execution of a definitive merger agreement with ONB Corporation.