New Mountain Finance Advisers, L.L.C.
- Regulatory AUM
- $11.2B
- Discretionary
- $11.2B
- Clients
- 13
- Avg AUM / client
- $864M
- Accounts
- 13
- Employees
- 235
AUM over time
Annual snapshots from Form ADV filings · as of Jun 01, 2026
Who they serve
| Client type | Clients | AUM | % of AUM |
|---|---|---|---|
| Business development companies | 5 | $9.2B | 81.5% |
| Pooled investment vehicles (non-investment companies) | 8 | $2.1B | 18.5% |
Private funds (6)
Reported in Form ADV Section 7.B.(1), filing of Aug 2024 · $1.1B combined gross assets
| Fund | Type | Domicile | Gross assets | Owners |
|---|---|---|---|---|
| New Mountain Net Lease Partners, L.P. master | Real Estate Fund | Delaware | $533M | 191 |
| New Mountain Net Lease Partners Ii, L.P. master | Real Estate Fund | Delaware | $323M | 66 |
| New Mountain Guardian Ii Master Fund A, L.P. | Private Equity Fund | Cayman Islands | $126M | 2 |
| New Mountain Guardian Ii Master Fund B, L.P. | Private Equity Fund | Cayman Islands | $65.1M | 2 |
| New Mountain Guardian Partners Ii, L.P. | Private Equity Fund | Delaware | $32.7M | 11 |
| New Mountain Guardian Partners Ii Offshore, L.P. | Private Equity Fund | Cayman Islands | $0 | 22 |
People (8)
| Name | Role / title | Credentials | With firm since | Ownership |
|---|---|---|---|---|
| Klinsky, Steven, Bruce | Managing Member | Oct 2010 (16y) | 50% – 75% of Nm Holdings Gp, L.L.C. (indirect) | |
| Weinstein, Adam | Managing Director, Executive Vice President | Jan 2013 (14y) | Less than 5% | |
| Kaplan, Peter, Edward | Portfolio Manager | Nov 2017 (9y) | Less than 5% | |
| Hartswell, Joseph, Wesley | Managing Director And Chief Compliance Officer | Mar 2022 (4y) | Less than 5% | |
| Hamwee, Robert, Alan | Managing Director And Vice Chairman | Jan 2023 (4y) | Less than 5% | |
| Kline, John, Randolph | Managing Director And Chief Executive Officer | Jan 2023 (4y) | Less than 5% | |
| Boswerger, Laura, Holson | Managing Director, Chief Operating Officer | Apr 2023 (3y) | Less than 5% | |
| Corbett, Kris, Eric | Chief Financial Officer | Nov 2023 (3y) | Less than 5% |
Entity owners (Schedule A/B)
| Entity | Title / status | Since | Sch. | Ownership |
|---|---|---|---|---|
| New Mountain Capital Group, L.P. | Member | Oct 2010 | A | 75% or more |
| Nm Partners Manager Holdings, L.P. | Limited Partner | Oct 2018 | B | ≈ 56.25% – 100% via New Mountain Capital Group, L.P. |
| Nm Holdings Gp, L.L.C. | General Partner | Oct 2018 | B | GP / trustee / elected manager of Nm Partners Manager Holdings, L.P. (indirect) |
Estimated effective ownership (look-through of filed bands):
- Nm Partners Manager Holdings, L.P.: 75% – 100% of New Mountain Capital Group, L.P. × 75% – 100% direct ≈ 56.25% – 100% of the firm
Roster from the IAPD representatives feed; ownership and acquisition dates from Form ADV Schedule A/B. "Since" is the earliest filed registration or acquisition date.
Private funds (6, $1.1B gross assets)
| Fund | Type | Gross assets | Min. investment | Owners |
|---|---|---|---|---|
| New Mountain Net Lease Partners, L.P. | Real Estate Fund | $533M | $0 | 191 |
| New Mountain Net Lease Partners Ii, L.P. | Real Estate Fund | $323M | $0 | 66 |
| New Mountain Guardian Ii Master Fund A, L.P. | Private Equity Fund | $126M | $0 | 2 |
| New Mountain Guardian Ii Master Fund B, L.P. | Private Equity Fund | $65.1M | $0 | 2 |
| New Mountain Guardian Partners Ii, L.P. | Private Equity Fund | $32.7M | $0 | 11 |
| New Mountain Guardian Partners Ii Offshore, L.P. | Private Equity Fund | $0 | $0 | 22 |
From Form ADV Section 7.B private fund reporting.
Documents (1 archived)
| Form | Period | Size | |
|---|---|---|---|
| Form ADV (full filing) | 06/01/2026 | 3.65 MB | View · PDF · Source ↗ |
Archived copies of the firm's regulatory filings, versioned by content hash.
Disciplinary disclosures
No disciplinary events reported on the firm's latest Form ADV filing.
How they charge
- • Percentage of assets under management
- • Performance-based fees
Services
- • Portfolio management for investment companies
- • Portfolio management for pooled investment vehicles
- • Other services
Custody
Firm reports having custody of client funds or securities (Item 9.A).
No custodian data reported or mined yet.
Source
All data on this page comes from this firm's Form ADV filings, reproduced without modification. Latest filing: Jun 01, 2026.
View current Form ADV (SEC/IAPD) ↗