New Mountain Finance director buys more shares

New Mountain Finance Corp director Steven B. Klinsky reported indirect open-market purchases of company common stock on September 16, 2025.

Rhea-AI Filing Summary

New Mountain Finance Corp director Steven B. Klinsky reported indirect open-market purchases of company common stock on September 16, 2025. Trusts associated with him bought 21,339 shares and 85,352 shares at $9.7813 per share.

After these transactions, one trust holds 965,111 shares and another holds 4,370,857 shares. Klinsky also reports 109,251.61 shares directly and additional indirect holdings through several long-term and revocable family trusts. He disclaims beneficial ownership of many of these positions except to the extent of his pecuniary interest.

Insider Trade Summary

Net Buyer: 106,691 shares

Net Buy 10 txns

Insider KLINSKY STEVEN B

Role Director

Bought 106,691 shs ($1.04M)

Type	Security	Shares	Price	Value
Purchase	Common Stock	21,339	$9.7813	$209K
Purchase	Common Stock	85,352	$9.7813	$835K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 9,748,219 shares (Indirect, See Note); Common Stock — 109,251.61 shares (Direct)

Footnotes (10)

1. F1. Includes shares previously acquired under the New Mountain Finance Corporation dividend reinvestment plan.
2. F2. The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
3. F3. The Steven B. Klinsky Non-GST Exempt Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
4. F4. Includes (i) 16 shares held directly and (ii) 11,175 shares held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
5. F5. Shares are held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
6. F6. Shares are held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
7. F7. Shares are held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.
8. F8. The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.
9. F9. The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 2") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 2 except to the extent of his pecuniary interest therein.
10. F10. The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 3") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 3 except to the extent of his pecuniary interest therein.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did NMFCZ director Steven B. Klinsky report?

Steven B. Klinsky reported indirect open-market purchases of New Mountain Finance Corp common stock. On September 16, 2025, associated trusts acquired 21,339 shares and 85,352 shares at $9.7813 per share, reflecting additional insider-linked ownership in the company through family trust structures.

How many New Mountain Finance (NMFCZ) shares did the trusts buy and at what price?

Trusts associated with Steven B. Klinsky bought 21,339 shares and 85,352 shares of New Mountain Finance common stock. Both purchases occurred on September 16, 2025, at a reported price of $9.7813 per share in open-market transactions, according to the Form 4 filing details.

What are Steven B. Klinsky’s reported holdings in NMFCZ after the Form 4 transactions?

After the reported trades, one trust holds 965,111 shares and another 4,370,857 shares of New Mountain Finance common stock. Klinsky also shows 109,251.61 shares held directly, plus several other indirect positions through long-term and revocable family trusts disclosed in the filing footnotes.

Are the NMFCZ shares held directly by Steven B. Klinsky or through entities?

The Form 4 shows 109,251.61 shares held directly by Steven B. Klinsky, including dividend reinvestment plan shares. The remaining positions are held indirectly through multiple family trusts, for which he disclaims beneficial ownership except for his pecuniary interest, as described in the footnotes.

What role does Steven B. Klinsky have at New Mountain Finance (NMFCZ)?

Steven B. Klinsky is reported as a director of New Mountain Finance Corp. His Form 4 filing reflects stock positions held both directly and indirectly through several family-related trusts, with explicit disclaimers limiting his beneficial ownership to his pecuniary interests in those entities.

How are the NMFCZ trust holdings described in the Form 4 footnotes?

Footnotes state that several trusts, including the Steven B. Klinsky 2008 Long Term Trust and 2024 Revocable Trusts, directly own the reported shares. Klinsky disclaims beneficial ownership of these trust-held shares except to the extent of his pecuniary interest, clarifying his economic stake in each entity.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 09/18/2025 - 04:30 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

KLINSKY STEVEN B

(Last) (First) (Middle)

C/O NEW MOUNTAIN CAPITAL, L.L.C.

1633 BROADWAY, 48TH FLOOR

(Street)

NEW YORK NY 10019

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
New Mountain Finance Corp [ NMFC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
09/16/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock								109,251.61(1)	D
Common Stock	09/16/2025		P		21,339	A	$9.7813	965,111	I	See Note(2)
Common Stock								1,020,267	I	See Note(3)
Common Stock								11,191	I	See Note(4)
Common Stock								11,175	I	See Note(5)
Common Stock								11,175	I	See Note(6)
Common Stock								11,175	I	See Note(7)
Common Stock	09/16/2025		P		85,352	A	$9.7813	4,370,857	I	See Note(8)
Common Stock								3,457,379	I	See Note(9)
Common Stock								855,000	I	See Note(10)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Includes shares previously acquired under the New Mountain Finance Corporation dividend reinvestment plan.

2. The Steven B. Klinsky 2008 Long Term Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

3. The Steven B. Klinsky Non-GST Exempt Trust directly owns these shares. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

4. Includes (i) 16 shares held directly and (ii) 11,175 shares held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

5. Shares are held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

6. Shares are held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

7. Shares are held indirectly through a trust by an immediate family member of the reporting person. The reporting person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein.

8. The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 1") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 1 except to the extent of his pecuniary interest therein.

9. The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 2") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 2 except to the extent of his pecuniary interest therein.

10. The Steven B. Klinsky 2024 Revocable Trust ("2024 Trust 3") directly owns these shares. The reporting person disclaims beneficial ownership held by 2024 Trust 3 except to the extent of his pecuniary interest therein.

	/s/ Steven B. Klinsky	09/18/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.