New Mountain Finance Corporation
Last updated September 27, 2026
Organization details
- Legal name
- New Mountain Finance Corporation
- Former names
- New Mountain Guardian Corp
- Ownership
- Public
- Status
- Active
- Jurisdiction of incorporation
- United States
- Headquarters city
- New York
- Headquarters state / province
- New York
- Headquarters country
- United States
- Fiscal year end
- December
- Ticker symbol
- NMFC
- Primary stock exchange
- Nasdaq
Identifiers
- SEC CIK
- 0001496099
- EIN
- 27-2978010
Board of directors
-
Adam B. Weinstein · Director · EVP, CAO and DirectorSince 2024
-
Barbara Daniel · DirectorSince 2023
-
David Ogens · DirectorSince 2023
-
John Kline · Director · CEO, President, and DirectorSince 2023
-
John P. Malfettone · DirectorSince 2026
-
John R. Kline · Director · CEO, President and DirectorSince 2026
-
Robert Hamwee · DirectorSince 2023
-
Rome G. Arnold III · DirectorSince 2023
-
Steven B. Klinsky · DirectorSince 2023
Chief executives
John Kline
· CEO, President, and Director
Dates unknown
John R. Kline
· CEO, President and Director
Dates unknown
Director election results
Annual meeting of May 12, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
79.5%
-
83.3%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $12,600,356
- 20 purchases by 4 insiders
- Sold, last 12 months
- $611,475
- 1 sale by 1 insider
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Jun 15, 2026 | John P. Malfettone Director | Open-market sale | −77,500 | $7.89 | $611,475 |
| Jun 10, 2026 | John R. Kline Director, Officer (CEO, President and Director) | Inheritance | +2,000 | — | — |
| Mar 17, 2026 | Adam B. Weinstein Director, Officer (EVP, CAO and Director) | Open-market purchase | +12,900 | $7.61 | $98,169 |
| Mar 11, 2026 | Steven B. Klinsky Director, 10% owner | Open-market purchase | +92,080 | $8.05 | $741,244 |
| Mar 11, 2026 | Steven B. Klinsky Director, 10% owner | Open-market purchase | +184,162 | $8.05 | $1,482,504 |
| Mar 10, 2026 | Steven B. Klinsky Director, 10% owner | Open-market purchase | +74,586 | $8.05 | $600,417 |
| Mar 10, 2026 | Steven B. Klinsky Director, 10% owner | Open-market purchase | +149,172 | $8.05 | $1,200,835 |
| Mar 5, 2026 | Steven B. Klinsky Director, 10% owner | Open-market purchase | +79,291 | $8.10 | $642,257 |
| Mar 5, 2026 | Steven B. Klinsky Director, 10% owner | Open-market purchase | +158,582 | $8.10 | $1,284,514 |
| Mar 4, 2026 | Steven B. Klinsky Director, 10% owner | Open-market purchase | +62,301 | $8.17 | $508,999 |
| Mar 4, 2026 | Steven B. Klinsky Director, 10% owner | Open-market purchase | +124,604 | $8.17 | $1,018,015 |
| Mar 3, 2026 | Steven B. Klinsky Director, 10% owner | Open-market purchase | +83,498 | $7.94 | $662,974 |
| Mar 3, 2026 | David Ogens Director | Open-market purchase | +10,100 | $7.87 | $79,487 |
| Mar 3, 2026 | David Ogens Director | Open-market purchase | +2,400 | $7.86 | $18,864 |
| Mar 3, 2026 | Steven B. Klinsky Director, 10% owner | Open-market purchase | +166,997 | $7.94 | $1,325,956 |
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