Table of Contents Smaller reporting company o Emerging growth company o | --- | --- | |----------------------------------|-------| | | | | UNITED STATES Washington, D.C. | 20549 | | FORM 10-K | | SECURITIES AND EXCHANGE COMMISSION þ 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 o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. For the transition period from to . Commission file n ...