X0206 3 2015-12-04 0 0000723188 COMMUNITY BANK SYSTEM, INC. CBU 0001201821 STICKELS ERIC C/O COMMUNITY BANK SYSTEM, INC. 5790 WIDEWATERS PARKWAY DEWITT NY 13214 1 Common Stock 14054 D Common Stock 296 D Common Stock 1731 I By Wife Common Stock 4134 I By Wife's Oneida Financial Corp. 401(k) Common Stock 7671 I By Oneida Financial Corp. Employee Stock Ownership Plan Common Stock 2314 I By Wife's Oneida Financial Corp. Employee Stock Ownership Plan Common Stock 24263 I By Oneida Financial Corp. 401(k) Plan Pursuant to the Agreement and Plan of Merger, dated as of February 24, 2015 (the "Merger Agreement"), each share of Oneida Financial Corp. stock held by the reporting person was converted into and became exchangeable for shares of Community Bank System, Inc. common stock. Under the terms of the Merger Agreement, and subject to the allocation and proration procedures set forth therein, for each share of Oneida Financial common stock, the reporting person could elect to receive either (a) cash at the rate of $20.00 per share, (b) 0.5635 shares of Community Bank System, Inc. common stock, or (c) a combination of 60% Community Bank System, Inc. common stock and 40% cash, using the same 0.5635 exchange ratio and $20.00 per share cash price. At this time, the final merger consideration allocation and proration results for the reporting person's Oneida Financial Corp. shares are not available. Set forth above is the reporting person's estimate of the number of shares of Community Bank System, Inc. stock beneficially owned by the reporting person based upon the allocation and proration procedures set forth in the Merger Agreement. The reporting person will file an amended Form 3 once the final stock ownership numbers are available. HSA Account Danielle M. Cima, pursuant to a Confirming Statement executed by Eric E. Stickels 2015-12-14