SCHEDULE: Insiders Boost New Mountain Finance Stake to 11.01%

Steven B. Klinsky and related trusts, along with Adam B. Weinstein, have increased their beneficial ownership in New Mountain Finance Corporation, now holding 11.01% of common stock.

Summary

• Steven B. Klinsky, the Chief Executive Officer of New Mountain Capital Group L.P. and Chairman of the Board of Directors of New Mountain Finance Corporation, along with his associated trusts (2008 Long Term Trust, Non-GST Exempt Trust, and 2024 Revocable Trusts 1, 2, and 3), and Adam B. Weinstein, a Managing Director of New Mountain Capital, are the Reporting Persons in this filing.
• Steven B. Klinsky's aggregate beneficial ownership in New Mountain Finance Corporation's common stock is 11,154,880.91 shares, representing 11.01% of the class.
• Adam B. Weinstein's aggregate beneficial ownership is 738,856.32 shares, representing 0.74% of the class.
• Since November 26, 2024, through March 2, 2026, Steven B. Klinsky and his trusts acquired an aggregate of 745,622.68 shares of common stock through open market purchases or the Issuer's dividend reinvestment plan, using personal funds.
• During the same period, Adam B. Weinstein acquired an aggregate of 186,321.82 shares of common stock through open market purchases or the Issuer's dividend reinvestment plan, using personal funds.
• Recent purchases include Adam Weinstein buying 38,400 shares at an average price of $7.764 on February 27, 2026, and 3,307 shares at an average price of $7.73 on March 2, 2026.
• The Steven B. Klinsky 2008 Long Term Trust purchased 46,001 shares at an average price of $7.6924 on February 27, 2026, and 62,242 shares at an average price of $7.7852 on March 2, 2026.
• The Steven B. Klinsky 2024 Revocable Trust (2024 Trust 1) purchased 92,001 shares at an average price of $7.6924 on February 27, 2026, and 124,483 shares at an average price of $7.7852 on March 2, 2026.
• The Reporting Persons acquired these shares based on the belief that they represented an attractive investment opportunity.

Sentiment

Score: 8

Explanation: StockSavvy.ai views this as a strong positive signal, as substantial insider buying by top management typically reflects high confidence in the company's intrinsic value and future performance, especially when purchases are made with personal funds.

Positives

• Significant insider buying by Steven B. Klinsky (CEO and Chairman) and Adam B. Weinstein (Managing Director of New Mountain Capital) demonstrates strong confidence in the company.
• Steven B. Klinsky's beneficial ownership has increased to 11.01% of the common stock, indicating a substantial personal stake.
• All share acquisitions were made using personal funds, not borrowed, reinforcing the conviction of the Reporting Persons.
• Management explicitly stated their belief that the shares represented an attractive investment opportunity at the time of purchase.

Future Outlook

This filing does not contain specific forward-looking statements or guidance beyond the Reporting Persons' belief that the shares represented an attractive investment opportunity.

Management Comments

• Mr. Klinsky is principally engaged in the business of serving as the Chief Executive Officer of New Mountain Capital Group L.P. and is the Chairman of the Board of Directors of the Issuer.
• Mr. Weinstein is a Managing Director of New Mountain Capital.
• Mr. Klinsky, the 2008 Trust, the Exempt Trust, the 2024 Trust 1, the 2024 Trust 2, the 2024 Trust 3, and Mr. Weinstein purchased the shares of Common Stock based on the belief that the shares of Common Stock, when purchased, represented an attractive investment opportunity.

Industry Context

StockSavvy.ai notes that significant insider buying, especially by top executives like the CEO and Chairman, often signals strong confidence in the company's future prospects and valuation. In the financial services sector, particularly for business development companies (BDCs) like New Mountain Finance Corporation, such actions can be interpreted by the market as a positive indicator of management's belief in the underlying asset quality and dividend sustainability, potentially differentiating it from peers facing economic uncertainties.

Related Party Transactions

• Steven B. Klinsky's trusts (the 2008 Long Term Trust, the Non-GST Exempt Trust, the 2024 Revocable Trust 1, the 2024 Revocable Trust 2, and the 2024 Revocable Trust 3) are considered related parties through his control and beneficial interest.
• Immediate family members of the Reporting Persons hold 16 shares directly and 44,700 shares indirectly through a trust, with the Reporting Persons disclaiming beneficial ownership of these shares except to the extent of their pecuniary interest therein.

Stakeholder Impact

• Shareholders: Increased insider ownership can boost investor confidence, signaling management's belief in the company's long-term value and potentially supporting the stock price.
• Management/Employees: Reinforces alignment of interests between top management and shareholders, potentially fostering a stronger sense of shared purpose.

Key Dates

Recommendation

The significant increase in beneficial ownership by key insiders, including the CEO and Chairman, Steven B. Klinsky, and Managing Director Adam B. Weinstein, signals strong conviction in New Mountain Finance Corporation's valuation and future prospects. These purchases, made with personal funds and explicitly stating the belief in an 'attractive investment opportunity,' suggest that management sees substantial upside. Such a strong vote of confidence from those with the most intimate knowledge of the company's operations and financials is a compelling indicator for investors.

Keywords

New Mountain Finance Corporation, NMFC, Schedule 13D, insider buying, beneficial ownership, Steven B. Klinsky, Adam B. Weinstein, investment opportunity, common stock, SEC filing, corporate governance