RUSH ISLAND MANAGEMENT, LP – investment adviser, $2.02B regulatory AUM (Form ADV)

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	4	$1,557,511,000	77.1%
Charities	Fewer than 5	$461,340,000	22.9%

Filing source

Form ADV 2058274 · Mar 27, 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

2 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.

RUSH ISLAND MASTER, LPHedge Fund · Last reported Mar 27, 2026$1.54BGross asset value

Feeder funds

Fund administrator MORGAN STANLEY FUND SERVICES (CAYMAN) LTD. GEORGE TOWN, GRAND CAYMAN, Cayman Islands Investor statements: Yes (provided to all investors) Related to adviser: No

Fund administrator MORGAN STANLEY FUND SERVICES USA LLC PURCHASE, New York, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE GRAND CAYMAN, Cayman Islands

Custodian COMPUTERSHARE TRUST COMPANY, N.A. CANTON, Massachusetts, United States Related to adviser: No

Custodian GOLDMAN SACHS & CO. LLC NEW YORK, New York, United States Related to adviser: No

Custodian GOLDMAN SACHS INTERNATIONAL LONDON, United Kingdom Related to adviser: No

Custodian MORGAN STANLEY CAPITAL SERVICES LLC NEW YORK, New York, United States Related to adviser: No

Custodian MORGAN STANLEY & CO. LLC NEW YORK, New York, United States Related to adviser: No

Custodian NORTHERN TRUST COMPANY CHICAGO, Illinois, United States Related to adviser: No

Prime broker GOLDMAN SACHS & CO. LLC NEW YORK, New York, United States

Prime broker MORGAN STANLEY & CO. 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

DELOITTE & TOUCHE
PCAOB 1096

GOLDMAN SACHS & CO. LLC
SEC 8-129

GOLDMAN SACHS INTERNATIONAL
LEI W22LROWP2IHZNBB6K528

MORGAN STANLEY CAPITAL SERVICES LLC
LEI I7331LVCZKQKX5T7XV54

MORGAN STANLEY & CO. LLC
SEC 8-15869

NORTHERN TRUST COMPANY
LEI 6PTKHDJ8HDUF78PFWH30

GOLDMAN SACHS & CO. LLC
CRD 361 · SEC 8-129

MORGAN STANLEY & CO. LLC
CRD 8209 · SEC 8-15869

Fund details & source

Fund ID: 805-9318631157
Reported beneficial owners: 85
Minimum commitment: $2M
Form D file number: 021-301225
Form D file number: 021-301226

Form ADV 2058274 · Mar 27, 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.

RIM CO1, LPHedge Fund · Last reported Mar 27, 2026$16MGross asset value

Form D fundraising filings

RIM Co1, LP

Fund administrator MORGAN STANLEY FUND SERVICES USA LLC PURCHASE, New York, United States Investor statements: Yes (provided to all investors) Related to adviser: No

Auditor DELOITTE & TOUCHE GRAND CAYMAN, Cayman Islands

Custodian GOLDMAN SACHS & CO. LLC NEW YORK, New York, United States Related to adviser: No

Custodian GOLDMAN SACHS INTERNATIONAL LONDON, United Kingdom Related to adviser: No

Custodian MORGAN STANLEY CAPITAL SERVICES LLC NEW YORK, New York, United States Related to adviser: No

Custodian MORGAN STANLEY & CO. LLC NEW YORK, New York, United States Related to adviser: No

Custodian NORTHERN TRUST COMPANY CHICAGO, Illinois, United States Related to adviser: No

Prime broker GOLDMAN SACHS & CO. LLC NEW YORK, New York, United States

Prime broker MORGAN STANLEY & CO. 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

DELOITTE & TOUCHE
PCAOB 1096

GOLDMAN SACHS & CO. LLC
SEC 8-129

GOLDMAN SACHS INTERNATIONAL
LEI W22LROWP2IHZNBB6K528

MORGAN STANLEY CAPITAL SERVICES LLC
LEI 17331LVCZKQKXST7XV54

MORGAN STANLEY & CO. LLC
SEC 8-15869

NORTHERN TRUST COMPANY
LEI 6PTKHDJ8HDUF78PFWH30

GOLDMAN SACHS & CO. LLC
CRD 361 · SEC 8-129

MORGAN STANLEY & CO. LLC
CRD 8209 · SEC 8-15869

Fund details & source

Fund ID: 805-7273791760
Reported beneficial owners: 5
Minimum commitment: $10M
Form D file number: 021-513945

Form ADV 2058274 · Mar 27, 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: Mar 27, 2026. View historical filings

Reported services

Pooled investment vehicle management

Compensation

Percentage of assets · Performance-based

Principal office

34 EAST 51ST STREET, 14TH FLOOR
NEW YORK, NY, 10022, United States

CRD 291275

Filing source

Form ADV 2058274 · Mar 27, 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.