UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 | FORM 20-F | | --- | | (Mark One) | | ¨ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 | | or | | x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 | | For the fiscal year ended December 31, 2021 | | or | | ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 | | For the transition period from _____ to _______ | ...