SC 13G/A

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Amendment #2

SCHEDULE 13G

Under the Securities and Exchange Act of 1934

New Mountain Finance Corp.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

647551100

(CUSIP Number)

September 30, 2012

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

This Schedule is filed pursuant to Rule 13d-1(b)

The information required in the remainder of this cover page (except any items to which the form provides a cross-reference) shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act.

CUSIP NO. 647551100

1)	Name of Reporting Person	Ameriprise Financial, Inc.
	S.S. or I.R.S. Identification	IRS No. 13-3180631
	No. of Above Person
2)	Check the Appropriate Box	(a)
	if a Member of a Group	(b) X*
*This filing describes the reporting person’s relationship with other persons, but the reporting person does not affirm the existence of a group.
3)	SEC Use Only
4)	Citizenship or Place of Organization	Delaware
	NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
5)	Sole Voting Power	0
6)	Shared Voting Power	65,024
7)	Sole Dispositive Power	0
8)	Shared Dispositive Power	1,714,772
9)	Aggregate Amount Beneficially
	Owned by Each Reporting Person	1,714,772
10)	Check if the Aggregate Amount in
	Row (9) Excludes Certain Shares	Not Applicable
11)	Percent of Class Represented by
	Amount In Row (9)	4.65%
12)	Type of Reporting Person	HC

CUSIP NO. 647551100

1)	Name of Reporting Person	Columbia Management Investment Advisers, LLC
	S.S. or I.R.S. Identification	IRS No. 41-1533211
	No. of Above Person
2)	Check the Appropriate Box	(a)
	if a Member of a Group	(b) X*
*This filing describes the reporting person’s relationship with other persons, but the reporting person does not affirm the existence of a group.
3)	SEC Use Only
4)	Citizenship or Place of Organization	Minnesota
	NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
5)	Sole Voting Power	0
6)	Shared Voting Power	65,024
7)	Sole Dispositive Power	0
8)	Shared Dispositive Power	1,714,772
9)	Aggregate Amount Beneficially
	Owned by Each Reporting Person	1,714,772
10)	Check if the Aggregate Amount in
	Row (9) Excludes Certain Shares	Not Applicable
11)	Percent of Class Represented by
	Amount In Row (9)	4.65%
12)	Type of Reporting Person	IA

1(a)	Name of Issuer:	New Mountain Finance Corp.
1(b)	Address of Issuer’s Principal	787 7th Ave., 48th Floor
	Executive Offices:	New York, NY 10019
2(a)	Name of Person Filing:	(a) Ameriprise Financial, Inc. (“AFI”)
		(b) Columbia Management Investment
		Advisers, LLC (“CMIA”)
2(b)	Address of Principal Business Office:	(a) Ameriprise Financial, Inc.
		145 Ameriprise Financial Center
		Minneapolis, MN 55474
		(b) 225 Franklin St.
		Boston, MA 02110
2(c)	Citizenship:	(a) Delaware
		(b) Minnesota
2(d)	Title of Class of Securities:	Common Stock
2(e)	Cusip Number:	647551100
3	Information if statement is filed pursuant to Rules 13d-1(b) or 13d-2(b):
	(a) Ameriprise Financial, Inc.
	A parent holding company in accordance with Rule 13d-1(b)(1)(ii)(G). (Note: See Item 7)
	(b) Columbia Management Investment Advisers, LLC
	An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E)
4	Incorporated by reference to Items (5)-(9) and (11) of the cover page pertaining to each reporting person.
	CMIA and AFI do not directly own any shares of Common Stock of the issuer. As the investment adviser to the Fund and various other unregistered and registered investment companies and other managed accounts, CMIA may be deemed to beneficially own the shares reported herein by the Fund. Accordingly, the shares reported herein by CMIA include those shares separately reported herein by the Fund.
	As the parent holding company of CMIA, AFI may be deemed to beneficially own the shares reported herein by CMIA. Accordingly, the shares reported herein by AFI include those shares separately reported herein by CMIA.

	Each of AFI and CMIA, and the subsidiaries identified on the attached Exhibit I, disclaims beneficial ownership of any shares reported on this Schedule.
5	Ownership of 5% or Less of a Class: If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [ X ].
6	Ownership of more than 5% on Behalf of Another Person: Not Applicable
7	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company:
	AFI: See Exhibit I
8	Identification and Classification of Members of the Group:
	Not Applicable
9	Notice of Dissolution of Group:
	Not Applicable
10	Certification:
	By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired in the ordinary course of business and were not acquired for the purpose of and do not have the effect of changing or influencing the control of the issuer of such securities and were not acquired in connection with or as a participant in any transaction having such purposes or effect.

Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: October 10, 2012

Ameriprise Financial, Inc.
By:	/s/ Wade M. Voigt
	Name: Wade M. Voigt
	Title: Vice President – Fund Administration –Financial Reporting

Columbia Management Investment Advisers, LLC
By:	/s/ Amy Johnson
	Name: Amy Johnson
	Title: Chief Operating Officer

Contact Information
	Wade M. Voigt
	Vice President – Fund Administration – Financial Reporting
	Telephone: (612) 671-5682

Exhibit Index

Exhibit I	Identification and Classification of the Subsidiary which Acquired the Security Being Reported on by the Parent Holding Company.
Exhibit II	Joint Filing Agreement

EX-99.I

Exhibit I

to

Schedule 13G

Ameriprise Financial, Inc., a Delaware Corporation, is a parent holding company. The classification and identity of the relevant subsidiaries is as follows:

Investment Adviser – Columbia Management Investment Advisers, LLC is an investment adviser registered under section 203 of the Investment Advisers Act of 1940.

EX-99.II

Exhibit II

to

Schedule 13G

Joint Filing Agreement

The undersigned persons agree and consent to the joint filing on their behalf of this Schedule 13G dated October 10, 2012 in connection with their beneficial ownership of New Mountain Finance Corp. Columbia Management Investment Advisers, LLC authorizes Ameriprise Financial, Inc. to execute the Schedule 13G to which this Exhibit is attached and make any necessary amendments there to.

Ameriprise Financial, Inc.
By:	/s/ Wade M. Voigt
	Wade M. Voigt
	Vice President – Fund Administration – Financial Reporting

Columbia Management Investment Advisers, LLC
By:	/s/ Amy Johnson
	Amy Johnson
	Chief Operating Officer