Steven B. Klinsky - 27 Feb 2026 SCHEDULE 13D/A Report for New Mountain Finance Corporation Common Stock, par value $0.01 per share (NMFC)

Filing Manager: Steven B. Klinsky
Reporting Manager: KLINSKY STEVEN B
Security: New Mountain Finance Corporation Common Stock, par value $0.01 per share
Symbol: NMFC
Shares outstanding: 101,315,903 shares
Disclosed Ownership: 11,154,881 shares
Ownership: 11%
Form type: SCHEDULE 13D/A
Filing time: 03 Mar 2026, 17:52:01 UTC
Date of event: 27 Feb 2026
SEC: View on sec.gov

Reporting Managers (7)

Name	Ownership	Shares Owned	sole voting power	shared voting power	Signature	Title	CIK
KLINSKY STEVEN B	11%	11,154,881	9,016,544	2,138,337	Steven B. Klinsky	Steven B. Klinsky	0001018327
STEVEN B. KLINSKY 2008 LONG TERM TRUST	1.1%	1,073,354	0	1,073,354	/s/ Steven B. Klinsky	Steven B. Klinsky, Authorized Person
STEVEN B. KLINSKY NON-GST EXEMPT TRUST	1%	1,020,267	0	1,020,267	/s/ Steven B. Klinsky	Steven B. Klinsky, Authorized Person
STEVEN B. KLINSKY 2024 REVOCABLE TRUST (2024 TRUST 1)	4.6%	4,587,341	4,587,341	0	/s/ Steven B. Klinsky	Steven B. Klinsky, Authorized Person
STEVEN B. KLINSKY 2024 REVOCABLE TRUST (2024 TRUST 2)	3.4%	3,457,379	3,457,379	0	/s/ Steven B. Klinsky	Steven B. Klinsky, Authorized Person
STEVEN B. KLINSKY 2024 REVOCABLE TRUST (2024 TRUST 3)	0.85%	855,000	855,000	0	/s/ Steven B. Klinsky	Steven B. Klinsky, Authorized Person
Weinstein Adam B.	0.74%	738,856	738,856	0	/s/ Adam B. Weinstein	Adam B. Weinstein	0001515170