Page 1

Table of Contents 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 , 2020 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 : 814-00802 HORIZON TECHNOLOGY FINANCE CORPORATION ( Exact name of registrant as specified in its charter ) DELAWARE ( State or other jurisdiction of incorporation or organization ) 312 Farmington Avenue , Farmington , CT ( Address of principal executive offices ) Title of each class Common Stock , par value $ 0.001 per share 6.25 % Notes due 2022 Registrant's telephone number , including area code ( 860 ) 676-8654 Securities registered pursuant to Section 12 ( b ) of the Act : Ticker symbol ( s ) HRZN HTFA Large accelerated filer □ Emerging Growth Company 27-2114934 ( I.R.S. Employer Identification No. ) 06032 ( Zip Code ) 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 Section 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 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. Accelerated filer Name of each exchange on which registered The Nasdaq Stock Market LLC The New York Stock Exchat 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 , a smaller reporting company or an emerging growth company . See the definitions of " accelerated filer , ” “ large accelerated filer , " " smaller reporting company , " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Smaller Reporting Company Non - accelerated filer > 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 common stock held by non - affiliates of the Registrant on June 30 , 2020 based on the closing price on that date of $ 10.90 on the Nasdaq Global Select Market was $ 185.2 million . For the purposes of calculating this amount only , all directors and executive officers of the Registrant have been treated as affiliates . There were 19,289,946 shares of the Registrant's common stock outstanding as of February 26 , 2021 . Documents Incorporated by Reference : Portions of the Registrant's Proxy Statement relating to the Registrant's 2020 Annual Meeting of Stockholders to be filed not later than 120 days after the end of the fiscal year covered by this Annual Report on Form 10 - K are incorporated by reference into Part III of this Annual Report on Form 10 - K .