Ring Energy(REI) - 2018 Q4 - Annual Report

United States Securities and Exchange Commission Washington, D.C. 20549 Form 10-K (Mark One) x Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2018 Or ¨ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from ___________to ___________ Commission file number 001-36057 Ring Energy, Inc. (Exact name of registrant as specified in its charter) Nevada 90-0406406 (State or oth ...