Trusts Linked to NMFC Director Buy 437K Shares

New Mountain Finance Corp director and ten percent owner Steven B. Klinsky reported indirect open-market purchases of a total of 437,400 shares of common stock.

Rhea-AI Filing Summary

New Mountain Finance Corp director and ten percent owner Steven B. Klinsky reported indirect open-market purchases of a total of 437,400 shares of common stock. These purchases occurred on 2026-03-03 and 2026-03-04 at prices of $7.9426 and $8.1671 per share.

The transactions were executed through various trusts and family-related entities, including long-term and revocable trusts and trusts for immediate family members. The filing notes that these entities directly own the shares and that Klinsky disclaims beneficial ownership except to the extent of his pecuniary interest. Some reported line items simply update indirect and direct share holdings, including shares previously acquired under the dividend reinvestment plan.

Insider Trade Summary

Net Buyer: 437,400 shares

Net Buy 12 txns

Insider KLINSKY STEVEN B

Role Director, 10% Owner

Bought 437,400 shs ($3.52M)

Type	Security	Shares	Price	Value
Purchase	Common Stock	62,301	$8.1671	$509K
Purchase	Common Stock	124,604	$8.1671	$1.02M
Purchase	Common Stock	83,498	$7.9426	$663K
Purchase	Common Stock	166,997	$7.9426	$1.33M
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 — 10,256,304 shares (Indirect, See Note); Common Stock — 116,823.91 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 share purchases were reported for New Mountain Finance Corp (NMFC)?

Indirect entities associated with director and ten percent owner Steven B. Klinsky bought a total of 437,400 NMFC common shares in open-market transactions. The shares were purchased at $7.9426 and $8.1671 per share across 2026-03-03 and 2026-03-04.

At what prices were NMFC shares bought in the latest Form 4 filing?

The reported indirect open-market purchases of New Mountain Finance Corp common stock were executed at $7.9426 and $8.1671 per share. These prices applied to transactions totaling 437,400 shares on 2026-03-03 and 2026-03-04, according to the Form 4 data.

Who executed the NMFC share purchases reported by Steven B. Klinsky?

The NMFC share purchases were carried out by trusts and family-related entities linked to reporting person Steven B. Klinsky. The filing explains that these trusts directly own the shares and that Klinsky disclaims beneficial ownership except for his pecuniary interest in those holdings.

How many NMFC shares are held indirectly after the reported transactions?

Post-transaction figures show multiple indirect positions, including 1,219,153 shares and 4,878,942 shares of NMFC common stock held through different trusts. Additional indirect holdings, such as 3,457,379 shares and 855,000 shares, are also reported in the ownership table as of the transaction dates.

Does Steven B. Klinsky claim full beneficial ownership of the NMFC shares?

No. For several trust and family-held positions, Steven B. Klinsky disclaims beneficial ownership of NMFC shares except to the extent of his pecuniary interest. The filing states that specific trusts and immediate family member trusts directly own those reported share blocks.

What role does the NMFC dividend reinvestment plan play in these holdings?

Some reported NMFC common stock positions include shares previously acquired under the company’s dividend reinvestment plan. This means a portion of the currently reported holdings was accumulated automatically when cash dividends were reinvested into additional NMFC shares over time.

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

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Accepted by SEC EDGAR 03/05/2026 - 04:42 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).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

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

3. Date of Earliest Transaction (Month/Day/Year)
03/03/2026

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								116,823.91(1)	D
Common Stock	03/03/2026		P		83,498	A	$7.9426	1,156,852	I	See Note(2)
Common Stock	03/04/2026		P		62,301	A	$8.1671	1,219,153	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	03/03/2026		P		166,997	A	$7.9426	4,754,338	I	See Note(8)
Common Stock	03/04/2026		P		124,604	A	$8.1671	4,878,942	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.

	Steven B. Klinsky	03/05/2026
	** 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).
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