    <SEC-DOCUMENT>0001628280-25-025195-index.html : 20250513
    <SEC-HEADER>0001628280-25-025195.hdr.sgml : 20250513
    <ACCEPTANCE-DATETIME>20250513171633
    ACCESSION NUMBER:		0001628280-25-025195
    CONFORMED SUBMISSION TYPE:	424B3
    PUBLIC DOCUMENT COUNT:		10
    FILED AS OF DATE:		20250513
    DATE AS OF CHANGE:		20250513

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Portman Ridge Finance Corp
    		CENTRAL INDEX KEY:			0001372807
    		ORGANIZATION NAME:
    		EIN:				205951150
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		424B3
    		SEC ACT:		1933 Act
    		SEC FILE NUMBER:	333-285230
    		FILM NUMBER:		25941385

    	BUSINESS ADDRESS:
    		STREET 1:		650 MADISON AVNUE
    		STREET 2:		3RD FLOOR
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10022
    		BUSINESS PHONE:		212.891.2880

    	MAIL ADDRESS:
    		STREET 1:		650 MADISON AVNUE
    		STREET 2:		3RD FLOOR
    		CITY:			NEW YORK
    		STATE:			NY
    		ZIP:			10022

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	KCAP Financial, Inc.
    		DATE OF NAME CHANGE:	20120710

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Kohlberg Capital CORP
    		DATE OF NAME CHANGE:	20061211

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Kohlberg Capital, LLC
    		DATE OF NAME CHANGE:	20060815
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>424B3
    <SEQUENCE>1
    <FILENAME>portmanridge424b3.htm
    <DESCRIPTION>424B3
    <TEXT>
    Document 1 - file: portmanridge424b3.htm

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

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>projectridge-lrfcproxyca001a.jpg
    <TEXT>
    Document 3 - file: projectridge-lrfcproxyca001a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>projectridge-lrfcproxyca002a.jpg
    <TEXT>
    Document 4 - file: projectridge-lrfcproxyca002a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>projectridge-ptmnproxyca001a.jpg
    <TEXT>
    Document 5 - file: projectridge-ptmnproxyca001a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>projectridge-ptmnproxyca002a.jpg
    <TEXT>
    Document 6 - file: projectridge-ptmnproxyca002a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>summaryofthemerger2aa.jpg
    <TEXT>
    Document 7 - file: summaryofthemerger2aa.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>summaryofthemergers1aa.jpg
    <TEXT>
    Document 8 - file: summaryofthemergers1aa.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>summaryofthemergers3aa.jpg
    <TEXT>
    Document 9 - file: summaryofthemergers3aa.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>summaryofthemergers4aa.jpg
    <TEXT>
    Document 10 - file: summaryofthemergers4aa.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>