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

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Quoteable Key Fact

"Steven B. Klinsky disclosed 13% ownership in New Mountain Finance Corporation Common Stock, par value $0.01 per share (NMFC) on 10 Mar 2026."

Quick Takeaways

  • Steven B. Klinsky filed SCHEDULE 13D/A for New Mountain Finance Corporation Common Stock, par value $0.01 per share (NMFC).
  • Disclosed ownership: 13%.
  • Date of event: 10 Mar 2026.

What Changed

  • Previous schedule filing date: 03 Mar 2026.
  • Current filing was accepted on 12 Mar 2026, 17:22.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

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

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