<SEC-DOCUMENT>0001133521-20-000004-index.html : 20200214
<SEC-HEADER>0001133521-20-000004.hdr.sgml : 20200214
<ACCEPTANCE-DATETIME>20200214162255
ACCESSION NUMBER:		0001133521-20-000004
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20200214
DATE AS OF CHANGE:		20200214

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			New Mountain Finance Corp
		CENTRAL INDEX KEY:			0001496099
		IRS NUMBER:				272978010
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-86256
		FILM NUMBER:		20620363

	BUSINESS ADDRESS:	
		STREET 1:		787 SEVENTH AVENUE, 48TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
		BUSINESS PHONE:		(212) 720-0300

	MAIL ADDRESS:	
		STREET 1:		787 SEVENTH AVENUE, 48TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	New Mountain Guardian Corp
		DATE OF NAME CHANGE:	20100706

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			STEELHEAD PARTNERS LLC
		CENTRAL INDEX KEY:			0001133521
		IRS NUMBER:				911740598
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		800 FIFTH AVENUE
		STREET 2:		SUITE 3700
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98104
		BUSINESS PHONE:		2063070910

	MAIL ADDRESS:	
		STREET 1:		800 FIFTH AVENUE
		STREET 2:		SUITE 3700
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98104
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>nmfc13g21420.htm
<TEXT>
Document 1 - file: nmfc13g21420.htm

</DOCUMENT>
</SEC-DOCUMENT>