Steven B. Klinsky - 10 Mar 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: 98,483,657 shares
Disclosed Ownership: 12,330,154 shares
Ownership: 13%
Form type: SCHEDULE 13D/A
Filing time: 12 Mar 2026, 17:22:10 UTC
Date of event: 10 Mar 2026
Previous filing: 03 Mar 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	13%	12,330,154	9,800,061	2,530,093	/s/ Steven B. Klinsky	Steven B. Klinsky	0001018327
STEVEN B. KLINSKY 2008 LONG TERM TRUST	1.5%	1,465,110	0	1,465,110	/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)	5.4%	5,370,858	5,370,858	0	/s/ Steven B. Klinsky	Steven B. Klinsky, Authorized Person
STEVEN B. KLINSKY 2024 REVOCABLE TRUST (2024 TRUST 2)	3.5%	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)	0.87%	855,000	855,000	0	/s/ Steven B. Klinsky	Steven B. Klinsky, Authorized Person
Weinstein Adam B.	0.75%	738,856	738,856	0	/s/ Adam B. Weinstein	Adam B. Weinstein	0001515170