X0206 3/A 2015-12-04 2015-12-14 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 15041 D Common Stock 27224.0545 I By Oneida Financial Corp. 401(k) Plan Common Stock 10947.9598 I By Oneida Financial Corp. Employee Stock Ownership Plan Common Stock 1730 I By Wife Common Stock 4639.1383 I By Wife's Oneida Financial Corp. 401(k) Common Stock 3199.0834 I By Wife's Oneida Financial Corp. Employee Stock Ownership Plan This amended Form 3 is filed by the reporting person to report the final allocation and proration of the Community Bank System, Inc. common stock acquired pursuant to the Agreement and Plan of Merger, dated as of February 24, 2015 (the "Merger Agreement"). Under the terms of 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. Danielle M. Cima, pursuant to a Confirming Statement executed by Eric E. Stickels 2016-05-16