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

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.

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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