New Mountain Finance Advisers

Asset Manager SEC-registered adviser

Legal name: New Mountain Finance Advisers, L.L.C.

New York, NY Website

AUM

$11.2B
Regulatory AUM

Private funds

7
Private Equity 6 · Real Estate 1

Private fund assets

$1.2B
Gross asset value

Employees

235

Last Form D raise

Apr 2023
Most recent fund filing

From SEC Form ADV filing (filed Jun 1, 2026). View on SEC

People(7)

Owners and executive officers named on the firm's SEC Form ADV.

A
Adam Weinstein
Managing Director, President and Firm Chief Operating Officer
Source: SEC Form ADV
J
John Kline
Managing Director and Chief Executive Officer
Source: SEC Form ADV
J
Joseph Hartswell
Managing Director and Chief Compliance Officer
Source: SEC Form ADV
K
Kellie Steele
Director and Net Lease Chief Financial Officer
Source: SEC Form ADV
L
Laura Boswerger
Managing Director and Credit Chief Operating Officer, Chief Financial Officer
Source: SEC Form ADV
P
Peter Kaplan
Managing Director and Portfolio Manager
Source: SEC Form ADV
S
Steven Klinsky
Managing Member, Nm Holdings GP
Source: SEC Form ADV

Funds(7)

Private funds reported on Form ADV, with amounts raised from the funds' SEC Form D filings.

FundTypeGross assetsRaised (Form D)InvestorsLast Form DRecency
New Mountain Net Lease Partners II, L.P.Real Estate$918.5M$816.3M79Apr 2023Cold
New Mountain Guardian Partners II, L.P.Private Equity$17.9M$73.4M11Apr 2019Cold
New Mountain Guardian Partners II Offshore, L.P.Private Equity—$430.2M13Apr 2019Cold
H-1 Credit Fund I, L.P.Private Equity$87.8M———
I-1 Credit Fund I, L.P.Private Equity$83.7M———
New Mountain Guardian II Master Fund-B, L.P.Private Equity$67.1M———
New Mountain Guardian II Master Fund-A, L.P.Private Equity$38.2M———

Board seats

Companies whose SEC Form D filings name one of this firm's people as a director, matched by name and office ZIP code.

No board seats matched from SEC filings yet.

Regulatory identifiers

CRD number
155493
SEC file number
801-71948
CIK
1527830

Sources