| California Public Employees' Retirement System | NEW Mountain Partners III, L.P. | $400M | n/a | 2007 |
| California Public Employees' Retirement System | NEW Mountain Partners VI, L.P. | $281M | n/a | 2021 |
| California Public Employees' Retirement System | n/a | $250M | n/a | 2024 |
| Washington State Investment Board | NEW Mountain Partners V, L.P. | $200M | n/a | 2017 |
| Washington State Investment Board | n/a | $400M | n/a | 2023 |
| Washington State Investment Board | NEW Mountain Partners VI, L.P. | $300M | n/a | 2021 |
| Oregon Public Employees Retirement Fund | NEW Mountain Partners II, L.P. | $50.0M | n/a | 2005 |
| Oregon Public Employees Retirement Fund | NEW Mountain Partners III, L.P. | $100M | n/a | 2007 |
| Pennsylvania Public School Employees' Retirement System | NEW Mountain Partners III, L.P. | $287M | n/a | 2007 |
| Pennsylvania Public School Employees' Retirement System | NEW Mountain Partners V, L.P. | $200M | n/a | 2017 |
| New York State Common Retirement Fund | NEW Mountain Partners III, L.P. | $100M | n/a | 2007 |
| New York State Common Retirement Fund | n/a | $100M | n/a | n/a |
| New Jersey Division of Investment | NEW Mountain Partners III, L.P. | $100M | n/a | 2007 |
| Teachers' Retirement System of the State of Illinois | n/a | n/a | n/a | n/a |
| Colorado Public Employees' Retirement Association | NEW Mountain Partners IV, L.P. | $75.0M | n/a | 2014 |
| Colorado Public Employees' Retirement Association | NEW Mountain Partners V, L.P. | $40.0M | n/a | 2017 |
| Colorado Public Employees' Retirement Association | NEW Mountain Partners VI, L.P. | $50.0M | n/a | 2021 |
| Colorado Public Employees' Retirement Association | n/a | $75.0M | n/a | 2024 |
| Los Angeles City Employees' Retirement System | NEW Mountain Partners III, L.P. | n/a | n/a | 2007 |