Solitario(XPL) - 2021 Q4 - Annual Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ Annual report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended December 31, 2021 Colorado 84-1285791 (I.R.S. Employer Identification No.) 4251 Kipling St. Suite 390, Wheat Ridge, CO 80033 (Address of principal executive offices) (Zip Code) Registrant's telephone number, including area code (303) 534-1030 Securities registered pursuant to Section 12(b) of the Act: | T ...