Executive Team

Mr. Kline joined New Mountain in 2008 as a founding member of New Mountain’s credit platform. Prior to joining New Mountain, he worked at GSC Group from 2001 to 2008. From 1999 to 2001, Mr. Kline was with Goldman where he worked in the Credit Risk Management and Advisory Group. Mr. Kline currently sits on the board of directors of New Mountain Finance Corporation, New Mountain Guardian III BDC, L.L.C, New Mountain Guardian IV BDC, L.L.C., New Mountain Guardian IV Income Fund, L.L.C., NMF SLF I, Inc., and Unitek Global Services, a current NMFC portfolio company. Mr. Kline graduated from Dartmouth College, with an A.B. degree in History in 1999.

Ms. Holson joined New Mountain in 2009. Before joining New Mountain, Ms. Holson worked at Morgan Stanley from 2007 to 2009 in the Healthcare investment banking group. Ms. Holson received a B.S. in Economics with concentrations in Finance and Marketing from The Wharton School, University of Pennsylvania, where she graduated magna cum laude.

Mr. Hartswell joined New Mountain in 2015. Prior to New Mountain, Mr. Hartswell was the Chief Compliance Officer for Mount Kellett Capital Management LP, a global investment firm focused on distressed, special situations and opportunistic investing. Prior to joining Mount Kellett, Mr. Hartswell was a Director, Asset Management Financial Services Regulatory Practice for PricewaterhouseCoopers LLP (“PwC”) where he assisted with the development of compliance programs for hedge funds, private equity funds, venture capital funds, registered investment companies, separate accounts and business development companies. Prior to PwC, Mr. Hartswell was a Vice President and Deputy Chief Compliance Officer for AIG Investments where he assisted with strategies and operational planning for a global asset manager and its SEC registered investment advisers and served as the designated Chief Compliance Officer for products registered under the Investment Company Act of 1940. Prior to AIG Investments, Mr. Hartswell was a Securities Compliance Examiner for the U.S. Securities and Exchange Commission. Mr. Hartswell holds a B.S. in Finance and International Business from the University of Maryland and is a CFA charterholder.

Mr. Corbett joined New Mountain in 2023. Before joining New Mountain, Mr. Corbett worked at Blackstone Credit where he served as a Senior Vice President, Controller and Treasurer of both the Blackstone Private Credit Fund (BCRED) and the Blackstone Secured Lending Fund. Mr. Corbett is a Certified Public Accountant in the state of New York, a CFA Charterholder and holds a Bachelor of Business Administration in Accounting from University of Massachusetts.

New Mountain’s Credit strategy relies on the resources, investing experience, knowledge, and relationships of the entire New Mountain platform to help source, underwrite and evaluate opportunities. We believe this integrated approach enables a deeper level of due diligence, promotes better investment selection, and provides greater access, information, and knowledge.  Learn more about the New Mountain Credit Team