![John Kline](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
John Kline
Chief Executive Officer at
NEW MOUNTAIN FINANCE CORPORATION
Net worth: 3 M $ as of 31/08/2026
Profile
Mr. John R.
Kline is a President, Chief Executive Officer & Trustee at New Mountain Private Credit Fund, a President & CEO, Credit at New Mountain Capital LLC, a President, Chief Executive Officer & Director at New Mountain Finance Corp., a Chairman, President & Chief Executive Officer at NMF SLF I, Inc., a Chief Operating Officer & Executive Vice President at New Mountain Finance AIV Holdings Corp.
and a President, Chief Executive Officer & Director at New Mountain Guardian IV Income Fund LLC.
He is on the Board of Directors at New Mountain Private Credit Fund, New Mountain Guardian IV BDC LLC, New Mountain Finance Corp.
and New Mountain Guardian IV Income Fund LLC.
Mr. Kline was previously employed as a Chairman, President & Chief Executive Officer by New Mountain Guardian III BDC LLC, a Managing Director by GSC Group (New Jersey), and an Analyst by Goldman Sachs & Co. He also served on the board at UniTek Global Services, Inc. He received his undergraduate degree from Dartmouth College.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 10/06/2026 | 389,685 ( 0.41% ) | 3 M $ | 31/08/2026 |
John Kline active positions
| Companies | Position | Start |
|---|---|---|
| NEW MOUNTAIN FINANCE CORPORATION | Chief Executive Officer | 01/01/2023 |
New Mountain Capital LLC
 New Mountain Capital LLC Investment ManagersFinance New Mountain Capital invests in middle market companies located in the United States with an enterprise value of USD 100 - 1000 million. The firm focuses on a broad range of sectors and industries. It provides financing for add-on acquisitions, buyout and growth transactions with a transaction size ranging USD 100 - 500 million. It also acquires majority control and minority equity positions. | Chief Executive Officer | 01/12/2008 |
New Mountain Finance AIV Holdings Corp.
 New Mountain Finance AIV Holdings Corp. Financial ConglomeratesFinance Operates as a non-diversified management investment company | Chief Operating Officer | - |
NMF SLF I, Inc.
 NMF SLF I, Inc. Investment ManagersFinance Functions as a private equity fund | Chief Executive Officer | 01/01/2023 |
New Mountain Guardian IV Unlevered Bdc LLC
 New Mountain Guardian IV Unlevered Bdc LLC Investment ManagersFinance Functions as a private equity fund | Chief Executive Officer | - |
New Mountain Guardian Iv Bdc LLC
 New Mountain Guardian Iv Bdc LLC Miscellaneous Commercial ServicesCommercial Services Operates as a business development company | Director/Board Member | 01/01/2023 |
Former positions of John Kline
| Companies | Position | End |
|---|---|---|
GSC Group (New Jersey)
 GSC Group (New Jersey) Investment ManagersFinance GSC Group invests in companies located in the United States. The firm targets companies operating across a broad range of sectors and industries. It provides financing for buyout transactions. | Trading-Equity | 31/12/2007 |
Goldman Sachs & Co. LLC
 Goldman Sachs & Co. LLC Investment Banks/BrokersFinance Provides brokerage services | Analyst-Equity | 31/12/2000 |
New Mountain Guardian III BDC LLC
 New Mountain Guardian III BDC LLC Investment ManagersFinance Acts as Private Equity Fund | Chief Executive Officer | - |
| ░░░░░░ ░░░░░░ ░░░░░░░░ ░░░░ | ░░░░░░░░░░░░░░ ░░░░░░ | - |
Training of John Kline
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
78
1st degree connections
11
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 11 |
|---|---|
GSC Group (New Jersey)
GSC Group (New Jersey) Investment ManagersFinance GSC Group invests in companies located in the United States. The firm targets companies operating across a broad range of sectors and industries. It provides financing for buyout transactions. | Finance |
New Mountain Finance Corp.
 New Mountain Finance Corp. Investment Trusts/Mutual FundsMiscellaneous Operates as a closed-end, non-diversified management investment company | Miscellaneous |
New Mountain Finance AIV Holdings Corp.
New Mountain Finance AIV Holdings Corp. Financial ConglomeratesFinance Operates as a non-diversified management investment company | Finance |
Dartmouth College
 Dartmouth College Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Goldman Sachs & Co. LLC
Goldman Sachs & Co. LLC Investment Banks/BrokersFinance Provides brokerage services | Finance |
New Mountain Capital LLC
New Mountain Capital LLC Investment ManagersFinance New Mountain Capital invests in middle market companies located in the United States with an enterprise value of USD 100 - 1000 million. The firm focuses on a broad range of sectors and industries. It provides financing for add-on acquisitions, buyout and growth transactions with a transaction size ranging USD 100 - 500 million. It also acquires majority control and minority equity positions. | Finance |
UniTek Global Services, Inc.
 UniTek Global Services, Inc. Engineering & ConstructionIndustrial Services Builds, constructs and maintains broadband & telecommunication infrastructure projects | Industrial Services |
NMF SLF I, Inc.
NMF SLF I, Inc. Investment ManagersFinance Functions as a private equity fund | Finance |
New Mountain Guardian III BDC LLC
New Mountain Guardian III BDC LLC Investment ManagersFinance Acts as Private Equity Fund | Finance |
New Mountain Guardian Iv Bdc LLC
New Mountain Guardian Iv Bdc LLC Miscellaneous Commercial ServicesCommercial Services Operates as a business development company | Commercial Services |
New Mountain Guardian IV Unlevered Bdc LLC
New Mountain Guardian IV Unlevered Bdc LLC Investment ManagersFinance Functions as a private equity fund | Finance |
- Stock Market
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- John Kline
