BLAIRSVILLE, Ga. , Nov. 01, 2017 (GLOBE NEWSWIRE) -- United Community Banks, Inc. (NASDAQ:UCBI) ("United") has completed its merger, effective November 1, 2017 , with Four Oaks Fincorp, Inc. (OTCQX:FOFN) ("Four Oaks"). Also effective November 1, 2017 , Four Oaks' bank subsidiary, Four Oaks Bank &