New Mountain Finance Corp
NMFC- Exchange
- Nasdaq
- SEC CIK
- 0001496099
No open-market purchases or sales by New Mountain Finance Corp insiders were filed in the last 90 days; 143 institutions reported holding it in 13F filings for Q2 2026, worth $200.9M in total; no superinvestor holds it.
Other share classesNMFCZ
Holders of 5% or more of NMFC
Holders whose latest Schedule 13D or 13G filing reports 5% or more of New Mountain Finance Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Klinsky Steven B | 13D/A | 12.52%12.3M shares | +1.51 ppfrom 11.01% | Mar 3, 20262 filings | Mar 12, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
2 Schedule 13D and 13G filings on New Mountain Finance Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 12, 20265:22 PM ET | Klinsky Steven Band 6 others | 13D/A | 12.52%12.3M shares | +1.51 ppfrom 11.01% | Mar 10, 2026 | SEC |
| Mar 3, 20265:52 PM ET | Klinsky Steven Band 6 others | 13D/A | 11.01%11.2M shares | – | Feb 27, 2026 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell New Mountain Finance Corp shares.
No Form 144 notices for New Mountain Finance Corp are on file.