Steven B.  Klinsky net worth and biography

Steven Klinsky Biography and Net Worth

Founder & CEO of New Mountain Finance

Steven Klinsky established New Mountain Capital in 1999. Prior to founding New Mountain Capital, Mr. Klinsky was co-founder of the Leverage Buyout Group of Goldman Sachs & Co. (“Goldman”) (1981-1984), where he helped execute over $3 billion of pioneering transactions for Goldman and its clients. He then joined Forstmann Little and Co. (“Forstmann Little”) as an Associate Partner (1984-1986) and a General Partner (1986-1999), helping to oversee seven private equity and debt partnerships totaling over $10 billion in capital. Mr. Klinsky was the most senior partner of Forstmann Little outside of the Forstmann family for a majority of the 1990s.

Mr. Klinsky received his B.A. in Economics and Political Philosophy, with high honors, from the University of Michigan in 1976. He received his M.B.A. from Harvard Business School (class of 1979) and his J.D., with honors, from Harvard Law School (class of 1981). He is or has been chairman or a director of numerous corporations and philanthropies.

What is Steven B. Klinsky's net worth?

The estimated net worth of Steven B. Klinsky is at least $42.27 million as of September 16th, 2025. Mr. Klinsky owns 4,370,857 shares of New Mountain Finance stock worth more than $42,266,187 as of December 5th. This net worth estimate does not reflect any other assets that Mr. Klinsky may own. Learn More about Steven B. Klinsky's net worth.

How do I contact Steven B. Klinsky?

The corporate mailing address for Mr. Klinsky and other New Mountain Finance executives is 787 Seventh Avenue 48th Floor, New York NY, 10019. New Mountain Finance can also be reached via phone at (212) 720-0300 and via email at [email protected]. Learn More on Steven B. Klinsky's contact information.

Has Steven B. Klinsky been buying or selling shares of New Mountain Finance?

Steven B. Klinsky has not been actively trading shares of New Mountain Finance in the last ninety days. Most recently, on Tuesday, September 16th, Steven B. Klinsky bought 106,691 shares of New Mountain Finance stock. The stock was acquired at an average cost of $9.78 per share, with a total value of $1,043,437.98. Following the completion of the transaction, the director now directly owns 4,370,857 shares of the company's stock, valued at $42,746,981.46. Learn More on Steven B. Klinsky's trading history.

Who are New Mountain Finance's active insiders?

New Mountain Finance's insider roster includes Rome Arnold, III (Director), Laura Boswerger (CFO), Robert Hamwee (Director), John Kline (CEO), Steven Klinsky (Founder & CEO), and David Ogens (Director). Learn More on New Mountain Finance's active insiders.

Are insiders buying or selling shares of New Mountain Finance?

During the last twelve months, New Mountain Finance insiders bought shares 6 times. They purchased a total of 251,095 shares worth more than $2,617,719.64. The most recent insider tranaction occured on September, 16th when Director Steven B Klinsky bought 106,691 shares worth more than $1,043,437.98. Insiders at New Mountain Finance own 11.7% of the company. Learn More about insider trades at New Mountain Finance.

Information on this page was last updated on 9/16/2025.

Steven B. Klinsky Insider Trading History at New Mountain Finance

Transaction DateBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
9/16/2025Buy106,691$9.78$1,043,437.984,370,857View SEC Filing Icon  
12/17/2024Buy72,280$11.28$815,318.404,285,505View SEC Filing Icon  
12/5/2024Buy16,624$11.74$195,165.764,133,737View SEC Filing Icon  
12/3/2024Buy6,200$11.75$72,850.004,122,655View SEC Filing Icon  
11/26/2024Buy2,400$11.74$28,176.004,118,522View SEC Filing Icon  
11/20/2024Buy34,867$11.51$401,319.174,056,324View SEC Filing Icon  
11/6/2024Buy150,609$10.87$1,637,119.833,632,326View SEC Filing Icon  
3/17/2023Buy100,000$11.74$1,174,000.007,820,681View SEC Filing Icon  
3/15/2023Buy100,000$11.83$1,183,000.007,620,681View SEC Filing Icon  
3/13/2023Buy100,000$11.70$1,170,000.007,420,681View SEC Filing Icon  
5/16/2022Buy18,350$12.80$234,880.007,181,197View SEC Filing Icon  
5/13/2022Buy14,250$12.73$181,402.507,162,847View SEC Filing Icon  
5/26/2020Buy272,861$9.58$2,614,008.387,240,751View SEC Filing Icon  
5/14/2020Buy200,000$7.94$1,588,000.007,040,751View SEC Filing Icon  
5/11/2020Buy100,000$8.11$811,000.006,840,751View SEC Filing Icon  
10/23/2019Buy355,000$13.25$4,703,750.006,740,751View SEC Filing Icon  
12/17/2018Buy181,805$12.52$2,276,198.6056,009View SEC Filing Icon  
3/13/2018Buy281,176$13.40$3,767,758.405,823,600View SEC Filing Icon  
3/9/2018Buy201,100$13.36$2,686,696.005,545,972View SEC Filing Icon  
11/8/2016Buy12,154$13.47$163,714.385,147,620View SEC Filing Icon  
11/7/2016Buy155,724$13.37$2,082,029.885,061,864View SEC Filing Icon  
11/3/2016Buy214,276$13.28$2,845,585.284,877,995View SEC Filing Icon  
2/19/2016Buy64,539$12.04$777,049.564,574,020View SEC Filing Icon  
2/17/2016Buy284,780$11.93$3,397,425.404,527,825View SEC Filing Icon  
2/12/2016Buy350,475$11.60$4,065,510.004,243,045View SEC Filing Icon  
12/17/2015Buy222,313$13.03$2,896,738.393,836,923View SEC Filing Icon  
9/30/2015Buy200,100$13.71$2,743,371.003,562,731View SEC Filing Icon  
9/29/2015Buy299,900$13.56$4,066,644.003,562,731View SEC Filing Icon  
9/25/2015Buy500,000$14.14$7,070,000.003,062,731View SEC Filing Icon  
11/12/2014Buy134,788$14.82$1,997,558.16View SEC Filing Icon  
8/15/2014Buy117,940$15.19$1,791,508.60View SEC Filing Icon  
8/13/2014Buy212,060$15.10$3,202,106.00View SEC Filing Icon  
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Steven B. Klinsky Buying and Selling Activity at New Mountain Finance

This chart shows Steven B Klinsky's buying and selling at New Mountain Finance by year and by quarter.

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New Mountain Finance Company Overview

New Mountain Finance logo
New Mountain Finance Corporation (Nasdaq: NMFC), a business development company is a private equity / buyouts and loan fund specializes in directly investing and lending to middle market companies in defensive growth industries. The fund prefers investing in buyout and middle market companies. It also makes investments in debt securities at all levels of the capital structure including first and second lien debt, unsecured notes, and mezzanine securities. In some cases, its investments may also include equity interests. It targets energy, engineering and consulting services, specialty chemicals and materials, trading companies and distributors, commercial printing, diversified support services, education services, environmental and facilities services, office services and supplies, media, distributors, health care services, health care facilities, application software, business services, systems software, federal services, distribution and logistics, interactive home entertainment, telecommunication services, hydroelectric power generation, electric power generation by fossil fuels, electric power generation by nuclear fuels, health care technology, and security and alarm services. The fund seeks to invest in United States of America. It seeks to invest between $10 million and $125 million per transaction. The firm invests through both primary originations and open-market secondary purchases. It invests in companies with EBITDA between $10 million and $200 million. The fund seeks a majority stake in its portfolio companies.
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Today's Range

Now: $9.67
Low: $9.65
High: $9.80

50 Day Range

MA: $9.47
Low: $8.93
High: $9.73

2 Week Range

Now: $9.67
Low: $8.84
High: $12.05

Volume

882,787 shs

Average Volume

494,541 shs

Market Capitalization

$997.56 million

P/E Ratio

14.88

Dividend Yield

13.18%

Beta

0.57