X0306 4/A 2016-11-18 2016-11-18 0000723188 COMMUNITY BANK SYSTEM, INC. CBU 0001201821 STICKELS ERIC C/O COMMUNITY BANK SYSTEM, INC. 5790 WIDEWATERS PARKWAY DEWITT NY 13214 1 Common Stock 2016-11-18 4 F 0 2942 54.89 D 16345 D Common Stock 39069.7444 I By Community Bank System, Inc. 401(k) Plan Common Stock 1730 I By Wife Common Stock 8029.6744 I By Wife's Community Bank System, Inc. 401(k) This amendment is filed to correct the number of shares withheld by the Company. Includes 897.7301 shares acquired pursuant to the 401(k) Plan's dividend reinvestment feature. The Oneida Financial Corp. Employee Stock Ownership Plan and the Oneida Financial Corp. 401(k) Plan were merged with the Community Bank System, Inc. 401(k) Plan. Includes 191.4527 shares acquired pursuant to the 401(k) Plan's dividend reinvestment feature. Danielle M. Cima, pursuant to a Confirming Statement executed by Eric E. Stickels 2016-11-25