MARINER INVESTMENT GROUP, LLC: Investment Adviser Form ADV Filing

How this adviser has changed

Annual filings

Regulatory assets under management

Up to five fiscal years, using the latest annual update available at the selected filing date. Asset changes can reflect acquisitions, client flows, and valuations; they are not investment returns.

Annual adviser history and sources
Fiscal year	Regulatory AUM	Employees	Filed
2021	$201,250,850,921	111	Mar 31, 2022
2022	$180,493,766,178	117	Mar 29, 2023
2023	$126,022,034,338	126	Mar 28, 2024
2024	$119,844,000,000	134	Feb 28, 2025
2025	$149,623,092,189	146	Mar 31, 2026

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	34	$125,882,834,660	84.1%
Sovereign wealth & foreign institutions	Fewer than 5	$18,516,716,968	12.4%
Investment companies	2	$3,162,893,963	2.1%
Retirement plans	Fewer than 5	$2,060,646,598	1.4%

Filing source

Form ADV 2068524 · Mar 31, 2026 · Item 5.D

Reported by MARINER INVESTMENT GROUP, LLC (CRD 124744).

Annual Updating Amendment for Registered Adviser · fiscal year 2025.

Official IAPD profile (latest public filing). Historical values on this page come from the SEC/IAPD filing archive; the public profile may show a newer filing.

Private funds & service providers

1 selected fund records

Largest reported gross asset value first; unreported values last. Gross asset value is fund-level disclosure, distinct from adviser AUM and Form D fundraising. Master and feeder funds may overlap.

View all funds in this filing

MARINER GLEN OAKS MASTER FUND, L.P.Hedge Fund · Master$16.5MGross asset value

Form D fundraising filings

View filings for the issuer linked by this fund’s reported Form D file numbers.

Mariner Glen Oaks Fund, L.P.

Fund administrator MUFG FUND SERVICES CAYMAN LIMITED HALIFAX, Canada Investor statements: Yes (provided to all investors) Related to adviser: No Other funds reporting this name →

Auditor KPMG LLP STAMFORD, Connecticut, United States Other funds reporting this name →

Custodian J.P. MORGAN SECURITIES LLC NEW YORK, New York, United States Related to adviser: No Other funds reporting this name →

Marketer VIGILANT DISTRIBUTORS, LLC NEW YORK, New York, United States Related to adviser: No Other funds reporting this name →

Prime broker J.P. MORGAN SECURITIES LLC NEW YORK, New York, United States Other funds reporting this name →

Provider details

Annual audit: Yes
Prime brokers: Yes
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: Yes

KPMG LLP
PCAOB 185

J.P. MORGAN SECURITIES LLC
SEC 8-35008

VIGILANT DISTRIBUTORS, LLC
CRD 285573 · SEC 8-69854

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

Fund details & source

Fund ID: 805-5576850531
Reported beneficial owners: 10
Minimum commitment: $1M
Form D file number: 021-241966

Form ADV 2068524 · Mar 31, 2026 · Schedule D 7.B.(1)

Reported by MARINER INVESTMENT GROUP, LLC (CRD 124744).

Annual Updating Amendment for Registered Adviser · fiscal year 2025.

Official IAPD profile (latest public filing). Historical values on this page come from the SEC/IAPD filing archive; the public profile may show a newer filing.

Services & filing details

View a filing

Showing values from the selected filing. Latest observed filing does not establish current registration status.

What changed?

Since Mar 7, 2025 · previous imported filing

Regulatory AUM$119,844,000,000 → $149,623,092,189
Client accounts45 → 37
Employees134 → 146

Filing source

Form ADV 2068524 · Mar 31, 2026 · Items 1 & 5

Reported by MARINER INVESTMENT GROUP, LLC (CRD 124744).

Annual Updating Amendment for Registered Adviser · fiscal year 2025.

Official IAPD profile (latest public filing). Historical values on this page come from the SEC/IAPD filing archive; the public profile may show a newer filing.

Management of assets

Discretionary: $150B
Non-discretionary: $0

Reported services

Investment company portfolio management · Pooled investment vehicle management · Business portfolio management

Compensation

Percentage of assets · Performance-based

Principal office

299 PARK AVENUE, 5TH FLOOR
NEW YORK, NY, 10171, United States

CRD 124744

Filing source

Form ADV 2068524 · Mar 31, 2026 · Items 1 & 5

Reported by MARINER INVESTMENT GROUP, LLC (CRD 124744).

Annual Updating Amendment for Registered Adviser · fiscal year 2025.

Official IAPD profile (latest public filing). Historical values on this page come from the SEC/IAPD filing archive; the public profile may show a newer filing.