Investment adviser · CRD 308098

NEWMARKET INVESTMENT MANAGEMENT, LP

Investment adviser filing (IA)

PHILADELPHIA, PA, United States · Form ADV filed May 20, 2026

Regulatory AUM: $2.82B
Client accounts: 28
Employees: 30
Advisory professionals: 16

Who they report serving

Form ADV · Item 5.D

Client types and their share of reported regulatory assets.

Client type	Clients	Regulatory assets	Share of AUM
Pooled investment vehicles	28	$2,820,324,742	100.0%

Filing source

Form ADV 2105113 · May 20, 2026 · Item 5.D

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

Private funds & service providers

15 Private funds

The count excludes feeder funds. Funds in the latest filing appear first, ordered by reported gross assets. Earlier funds retain their last reported values.

INTERNATIONAL INFRASTRUCTURE FINANCE COMPANY III, L.P.Private Equity Fund · Last reported May 20, 2026$861MGross asset value

Feeder funds

LONGWOOD PARTNERS, LP
STONEHURST PARTNERS, L.P.
INTERNATIONAL INFRASTRUCTURE FINANCE COMPANY FEEDER III, L.P.
KEYSTONE PARTNERS, L.P.

Fund administrator WAYSTONE FUND SERVICES US, INC NEW YORK, New York, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE LLP PHILADELPHIA, Pennsylvania, United States

Custodian THE BANK OF NEW YORK MELLON LONDON, United Kingdom Related to adviser: No

Marketer BURY STREET CAPITAL LONDON, United Kingdom Related to adviser: No

Marketer FALLS BRIDGE SECURITIES, LLC WAYNE, Pennsylvania, United States Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: Yes

DELOITTE & TOUCHE LLP
PCAOB 34

FALLS BRIDGE SECURITIES, LLC
CRD 299526 · SEC 8-70247

Fund details & source

Fund ID: 805-9891935287
Reported beneficial owners: 13
Minimum commitment: $10M
Form D file number: 021-373696

Form ADV 2105113 · May 20, 2026 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

STONEHURST PARTNERS MASTER FUND C, L.P.Hedge Fund · Last reported May 20, 2026$306MGross asset value

Feeder funds

STONEHURST PARTNERS, L.P.

Fund administrator WAYSTONE FUND SERVICES US, INC NEW YORK, New York, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE LLP PHILADELPHIA, Pennsylvania, United States

Custodian THE BANK OF NEW YORK MELLON LONDON, United Kingdom Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

DELOITTE & TOUCHE LLP
PCAOB 34

Fund details & source

Fund ID: 805-3359154687
Reported beneficial owners: 2
Minimum commitment: $10M
Form D file number: 021-423566

Form ADV 2105113 · May 20, 2026 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

LONGWOOD PARTNERS MASTER FUND B2, L.P.Hedge Fund · Last reported May 20, 2026$304MGross asset value

Feeder funds

LONGWOOD PARTNERS, LP

Fund administrator WAYSTONE FUND SERVICES US, INC NEW YORK, New York, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE LLP PHILADELPHIA, Pennsylvania, United States

Custodian THE BANK OF NEW YORK MELLON LONDON, United Kingdom Related to adviser: No

Marketer BURY STREET CAPITAL LONDON, United Kingdom Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: Yes

DELOITTE & TOUCHE LLP
PCAOB 34

Fund details & source

Fund ID: 805-9464435563
Reported beneficial owners: 2
Minimum commitment: $10M
Form D file number: 021-404463

Form ADV 2105113 · May 20, 2026 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

INTERNATIONAL INFRASTRUCTURE FINANCE COMPANY IV SCSPPrivate Equity Fund · Last reported May 20, 2026$253MGross asset value

Feeder funds

INTERNATIONAL INFRASTRUCTURE FINANCE COMPANY FEEDER III SCSP
INTERNATIONAL INFRASTRUCTURE FINANCE COMPANY FEEDER IV SCSP

Fund administrator WAYSTONE FUND SERVICES US, INC NEW YORK, New York, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE LLP LUXEMBOURG CITY, Luxembourg

Custodian THE BANK OF NEW YORK MELLON LONDON, United Kingdom Related to adviser: No

Marketer BURY STREET CAPITAL LONDON, United Kingdom Related to adviser: No

Marketer FALLS BRIDGE SECURITIES, LLC WAYNE, Pennsylvania, United States Related to adviser: No

Marketer GREENSTONE EQUITY PARTNERS DUBAI, United Arab Emirates Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: Yes

DELOITTE & TOUCHE LLP
PCAOB 34

FALLS BRIDGE SECURITIES, LLC
CRD 299526 · SEC 8-70247

Fund details & source

Fund ID: 805-5445100182
Reported beneficial owners: 5
Minimum commitment: $10M
Form D file number: 021-498069

Form ADV 2105113 · May 20, 2026 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

INTERNATIONAL INFRASTRUCTURE FINANCE COMPANY II, L.P.Private Equity Fund · Last reported May 20, 2026$221MGross asset value

Feeder funds

INTERNATIONAL INFRASTRUCTURE FINANCE COMPANY FEEDER II, L.P.

Fund administrator WAYSTONE FUND SERVICES US, INC NEW YORK, New York, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor EISNERAMPER LLP. PHILADELPHIA, Pennsylvania, United States

Custodian JP MORGAN CHASE BANK, N.A. NEW YORK, New York, United States Related to adviser: No

Custodian J.P. MORGAN SECURITIES LLC NEW YORK, New York, United States Related to adviser: No

Prime broker J.P. MORGAN SECURITIES LLC NEW YORK, New York, United States

Provider details

Annual audit: Yes
Prime brokers: Yes
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

EISNERAMPER LLP.
PCAOB 274

J.P. MORGAN SECURITIES LLC
SEC 8-35008

J.P. MORGAN SECURITIES LLC
CRD 79 · SEC 8-35008

Fund details & source

Fund ID: 805-9518181407
Reported beneficial owners: 20
Minimum commitment: $10M
Form D file number: 021-277306

Form ADV 2105113 · May 20, 2026 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

INTERNATIONAL INFRASTRUCTURE FINANCE COMPANY III-EU SCSPPrivate Equity Fund · Last reported May 20, 2026$218MGross asset value

Feeder funds

INTERNATIONAL INFRASTRUCTURE FINANCE COMPANY FEEDER III-EU SCSP

Fund administrator WAYSTONE FUND SERVICES US, INC NEW YORK, New York, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE LLP LUXEMBOURG CITY, Luxembourg

Custodian BANK OF NEW YORK MELLON SA/NV, LUXEMBOURG BRANCH LUXEMBOURG, Luxembourg Related to adviser: No

Custodian THE BANK OF NEW YORK MELLON LONDON, United Kingdom Related to adviser: No

Marketer BURY STREET CAPITAL LONDON, United Kingdom Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: Yes

DELOITTE & TOUCHE LLP
PCAOB 34

Fund details & source

Fund ID: 805-4873676812
Reported beneficial owners: 10
Minimum commitment: $10M
Form D file number: 021-450352

Form ADV 2105113 · May 20, 2026 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

BELMONT PARTNERS MASTER FUND, L.P.Hedge Fund · Last reported May 20, 2026$167MGross asset value

Feeder funds

BELMONT PARTNERS, LP

Fund administrator WAYSTONE FUND SERVICES US, INC NEW YORK, New York, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE LLP PHILADELPHIA, Pennsylvania, United States

Custodian THE BANK OF NEW YORK MELLON LONDON, United Kingdom Related to adviser: No

Provider details

Annual audit: Yes
Prime brokers: No
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

DELOITTE & TOUCHE LLP
PCAOB 34

Fund details & source

Fund ID: 805-6002762504
Reported beneficial owners: 2
Minimum commitment: $10M
Form D file number: 021-523316

Form ADV 2105113 · May 20, 2026 · Schedule D 7.B.(1)

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.

Services & filing details

Most recent filing: May 20, 2026. View historical filings

Reported services

Pooled investment vehicle management

Compensation

Percentage of assets · Performance-based

Principal office

1325 NORTH BEACH STREET, SUITE 201
PHILADELPHIA, PA, 19125, United States

CRD 308098

Filing source

Form ADV 2105113 · May 20, 2026 · Items 1 & 5

Official IAPD profile (latest public filing). Values are the most recently reported in our imported data; the public profile may show a newer filing.