# NEW MOUNTAIN FINANCE ADVISERS, L.L.C.

NEW MOUNTAIN FINANCE ADVISERS, L.L.C. of NEW YORK, NY is an SEC-registered investment adviser.

## Registration

- CRD: 155493
- Type: SEC-registered investment adviser
- SEC file number: 801-71948
- Location: 1633 BROADWAY, 48TH FLOOR, NEW YORK, NY, 10019
- Phone: 212-720-0300
- Latest filing: 2026-06-01
- Regulatory AUM: $11.2B
- Discretionary AUM: $11.2B
- Clients: 235
- Accounts: 13

## Business model

- Compensation: % of AUM, Performance
- Clients served: Investment cos, Other

## Officers, owners & control persons (23)

| Name | Role | Location |
| --- | --- | --- |
| [John Randolph Kline](https://search.stillhousedata.com/person/706135) | MANAGING DIRECTOR AND CHIEF EXECUTIVE OFFICER | — |
| [Steven Bruce Klinsky](https://search.stillhousedata.com/person/706136) | FOUNDER; LIMITED PARTNER; MANAGING MEMBER | — |
| [Joseph Wesley Hartswell](https://search.stillhousedata.com/person/706137) | MANAGING DIRECTOR AND CHIEF COMPLIANCE OFFICER | — |
| [Kris Eric Corbett](https://search.stillhousedata.com/person/706139) | CHIEF FINANCIAL OFFICER | — |
| [Adam Brett Weinstein](https://search.stillhousedata.com/person/710107) | MANAGING DIRECTOR, EXECUTIVE VICE PRESIDENT; MANAGING DIRECTOR, PRESIDENT AND FIRM CHIEF OPERATING OFFICER | — |
| [Peter Edward Kaplan](https://search.stillhousedata.com/person/710108) | MANAGING DIRECTOR AND PORTFOLIO MANAGER | — |
| [Laura Holson Boswerger](https://search.stillhousedata.com/person/710109) | MANAGING DIRECTOR AND CHIEF OPERATING OFFICER; MANAGING DIRECTOR AND CREDIT CHIEF OPERATING OFFICER; MANAGING DIRECTOR AND CREDIT CHIEF OPERATING OFFICER, CHIEF FINANCIAL OFFICER | — |
| [Kellie Nicole Steele](https://search.stillhousedata.com/person/710110) | DIRECTOR AND NET LEASE CHIEF FINANCIAL OFFICER | — |
| [KAPLAN MARTIN EDWARD](https://search.stillhousedata.com/person/727782) | PORTFOLIO MANAGER | — |
| [HAMWEE ROBERT ALAN](https://search.stillhousedata.com/person/759567) | CHIEF EXECUTIVE OFFICER; MANAGING DIRECTOR AND CHIEF EXECUTIVE OFFICER; MANAGING DIRECTOR AND VICE CHAIRMAN (+2 more) | — |
| [KLINSKY STEVEN BRUCE](https://search.stillhousedata.com/person/791064) | FOUNDER; LIMITED PARTNER; MANAGING MEMBER | — |
| [BOSCO PAULA ANN](https://search.stillhousedata.com/person/794539) | CHIEF COMPLIANCE OFFICER AND CORPORATE SECRETARY; MANAGING DIRECTOR, CHIEF REGULATORY COUNSEL, CCO AND CORPORATE SECRETARY | — |
| [WEINSTEIN ADAM](https://search.stillhousedata.com/person/794540) | CHIEF FINANCIAL OFFICER; MANAGING DIRECTOR, CHIEF ADMINISTRATIVE OFFICER & EXECUTIVE VICE PRESIDENT; MANAGING DIRECTOR, EXECUTIVE VICE PRESIDENT | — |
| [JERRY KARRIE JEAN](https://search.stillhousedata.com/person/814499) | CHIEF COMPLIANCE OFFICER AND CORPORATE SECRETARY | — |
| [CORDOVA DAVID](https://search.stillhousedata.com/person/814500) | CHIEF FINANCIAL OFFICER & TREASURER | — |
| [KLINE JOHN RANDOLPH](https://search.stillhousedata.com/person/814501) | MANAGING DIRECTOR AND CHIEF EXECUTIVE OFFICER; MANAGING DIRECTOR, CHIEF OPERATING OFFICER & EXECUTIVE VICE PRESIDENT; MANAGING DIRECTOR, PRESIDENT AND CHIEF OPERATING OFFICER | — |
| [HARTSWELL JOSEPH WESLEY](https://search.stillhousedata.com/person/814573) | MANAGING DIRECTOR AND CHIEF COMPLIANCE OFFICER | — |
| [KAJEE SHIRAZ YOUNUS](https://search.stillhousedata.com/person/816280) | CHIEF FINANCIAL OFFICER; CHIEF FINANCIAL OFFICER & TREASURER | — |
| [KAPLAN PETER](https://search.stillhousedata.com/person/851258) | PORTFOLIO MANAGER | — |
| [HOLSON LAURA](https://search.stillhousedata.com/person/873083) | MANAGING DIRECTOR, CHIEF OPERATING OFFICER; MANAGING DIRECTOR, CHIEF OPERATING OFFICER AND INTERIM CHIEF FINANICIAL OFFICER | — |
| [WEINSTEIN ADAM BRETT](https://search.stillhousedata.com/person/881587) | MANAGING DIRECTOR, EXECUTIVE VICE PRESIDENT | — |
| [BOSWERGER LAURA HOLSON](https://search.stillhousedata.com/person/881588) | MANAGING DIRECTOR, CHIEF OPERATING OFFICER | — |
| [Corbett Kris Eric](https://search.stillhousedata.com/person/881589) | CHIEF FINANCIAL OFFICER | — |


## Private funds (7)

Mix: Real Estate Fund 1 · Private Equity Fund 6

| Fund | Type | Formed | Owners | GAV | Min investment |
| --- | --- | --- | --- | --- | --- |
| NEW MOUNTAIN NET LEASE PARTNERS II, L.P. | Real Estate Fund | Delaware | 66 | $918.5M | — |
| H-1 CREDIT FUND I, L.P. | Private Equity Fund | Cayman Islands | 2 | $87.8M | — |
| I-1 CREDIT FUND I, L.P. | Private Equity Fund | Cayman Islands | 2 | $83.7M | — |
| NEW MOUNTAIN GUARDIAN II MASTER FUND-B, L.P. | Private Equity Fund | Cayman Islands | 2 | $67.1M | — |
| NEW MOUNTAIN GUARDIAN II MASTER FUND-A, L.P. | Private Equity Fund | Cayman Islands | 2 | $38.2M | — |
| NEW MOUNTAIN GUARDIAN PARTNERS II, L.P. | Private Equity Fund | Delaware | 11 | $17.9M | — |
| NEW MOUNTAIN GUARDIAN PARTNERS II OFFSHORE, L.P. | Private Equity Fund | Cayman Islands | 21 | — | — |


## Branch offices (8)

| City | State | Employees | Phone |
| --- | --- | --- | --- |
| LONDON | — | 4 | +44 2036557976 |
| TOKYO | — | 3 | 03-4579-0227 |
| GURUGRAM | — | 2 | 212-367-2724 |
| SANTA MONICA | CA | 1 | 212-720-0316 |
| CHARLESTON | SC | 1 | (212) 720-0300 |
| SEOUL | — | 1 | — |
| COLONIA ROMA NORTE | — | 1 | — |
| ABU DHABI | — | 0 | — |


## Fund service providers (1)

- custodian: NEW MOUNTAIN NET LEASE II DELAWARE FEEDER, L.P.

## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/155493/brochure
- Similar advisers: https://search.stillhousedata.com/firm/155493/similar
- Related entities: https://search.stillhousedata.com/firm/155493/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/155493

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Source: public SEC Form ADV data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.