    <SEC-DOCUMENT>0001437749-25-001495-index.html : 20250121
    <SEC-HEADER>0001437749-25-001495.hdr.sgml : 20250121
    <ACCEPTANCE-DATETIME>20250121162158
    ACCESSION NUMBER:		0001437749-25-001495
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		4
    FILED AS OF DATE:		20250121
    DATE AS OF CHANGE:		20250121

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Horizon Technology Finance Corp
    		CENTRAL INDEX KEY:			0001487428
    		ORGANIZATION NAME:
    		IRS NUMBER:				272114934
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	814-00802
    		FILM NUMBER:		25542722

    	BUSINESS ADDRESS:
    		STREET 1:		312 FARMINGTON AVENUE
    		CITY:			FARMINGTON
    		STATE:			CT
    		ZIP:			06032
    		BUSINESS PHONE:		860-676-8654

    	MAIL ADDRESS:
    		STREET 1:		312 FARMINGTON AVENUE
    		CITY:			FARMINGTON
    		STATE:			CT
    		ZIP:			06032
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>hrzn20250121_defa14a.htm
    <DESCRIPTION>FORM DEFA14A
    <TEXT>
    Document 1 - file: hrzn20250121_defa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>fullpackage_page1.jpg
    <TEXT>
    Document 2 - file: fullpackage_page1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>fullpackage_page2.jpg
    <TEXT>
    Document 3 - file: fullpackage_page2.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>shareholderletter01.jpg
    <TEXT>
    Document 4 - file: shareholderletter01.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>