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☐ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended : December 31 , 2020 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 " COAL KEEPS YOUR LIGHTS ON " UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D. C. 20549 FORM 10 - K Colorado ( State of incorporation ) Title of each class Common Stock , $ 0.01 par value per 1183 East Canvasback Drive , Terre Haute , Indiana ( Address of principal executive offices ) Commission file number : 001-3473 Issuer's telephone number : 812.299.2800 Securities registered pursuant to Section 12 ( b ) of the Act : H HALLADOR ENERGY COMPANY ( www.halladorenergy.com ) share Large accelerated filer Non - accelerated filer Trading Symbol ( s ) HNRG " COAL KEEPS YOUR LIGHTS ON " 84-1014610 ( IRS Employer Identification No. ) 47802 ( Zip Code ) Name of each exchange on which registered Nasdaq Capital Market Securities registered pursuant to Section 12 ( g ) of the Act : None Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes No Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15 ( d ) of the Act . Yes No Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities and Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) , and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes No Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( § 232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes No Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , or a smaller reporting company , or an emerging growth company . See the definitions of " larger accelerated filer , " " accelerated filer " , " smaller reporting company , " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Accelerated filer Smaller reporting company Emerging growth company If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes No The aggregate market value of the common stock held by non - affiliates ( public float ) on June 30 , 2020 was $ 13,999,757 based on the closing price reported that date by the NASDAQ of $ .66 per share . As of March 4 , 2021 , we had 30,612,572 shares outstanding . Our Annual Meeting of Shareholders will be held on June 3 , 2021 in Terre Haute , IN .