# Mariner Investment Group, LLC

> Mariner Investment Group, LLC is an SEC-registered investment advisory firm in New York, NY, registered since 2003, reporting over $5 billion in regulatory assets under management in its Form ADV filing dated August 28, 2026.

- CRD: 124744
- Filed as: MARINER INVESTMENT GROUP, LLC
- Also doing business as: "BRIGHT MEADOW" INCLUDING BRIGHT MEADOW CAPITAL AGENCY, LLC, "BRIGHT MEADOW" INCLUDING BRIGHT MEADOW CAPITAL, LLC, "CICERO" INCLUDING MARINER CICERO GP, LLC, "CONCORDIA" AND "CONCORDIA G10" INCLUDING CONCORDIA G10 STRATEGIES GP LLC, "CONCORDIA" AND "CONCORDIA MUNI" INCLUDING CONCORDIA MUNICIPAL STRATEGIES GP LLC, "GLEN OAKS" INCLUDING MARINER GLEN OAKS GP, LLC, BOWPORT, MARINER FRONTIER GP, LLC, MARINER GP, LLC, OXUS, PECONIC BAY, SILVERMINE
- Registration: SEC-registered investment adviser (status as filed: Approved)
- Location: New York, NY
- Filing period: October 2026
- Form ADV filing dated: August 28, 2026
- SEC record (IAPD): https://adviserinfo.sec.gov/firm/summary/124744
- AdvisorCensus page: https://advisorcensus.com/firm/mariner-investment-group-llc-new-york-ny-124744

## Quick answers

**How is Mariner Investment Group, LLC compensated?**
On its Form ADV (Item 5.E, October 2026), Mariner Investment Group, LLC reports these compensation arrangements: a percentage of assets under its management; performance-based fees. The amounts are in Item 5 of its Form ADV Part 2A brochure.

**Where is Mariner Investment Group, LLC located?**
Mariner Investment Group, LLC's principal office is in New York, NY, according to its Form ADV; the September 2026 filing also lists 5 other offices (Schedule D, Section 1.F).

**Is Mariner Investment Group, LLC registered with the SEC or a state?**
Mariner Investment Group, LLC is an SEC-registered investment advisory firm, registered since 2003. Status as filed: Approved. CRD 124744.

**How much does Mariner Investment Group, LLC manage?**
Mariner Investment Group, LLC reports $176,308,128,651 in regulatory assets under management in its Form ADV filing dated August 28, 2026 (100% discretionary).

**How have Mariner Investment Group, LLC's assets and staff changed since 2021?**
In the Form ADV data for Mariner Investment Group, LLC: Regulatory assets under management: $188,025,970,411 in the October 2021 data and $176,308,128,651 in the October 2026 data, down 6%. Total employees: 109 in October 2021 and 176 in October 2026. Assets under management move with markets as well as with clients coming and going.

**What types of clients does Mariner Investment Group, LLC serve?**
By number of clients on Form ADV Item 5.D: pooled investment vehicles (other than investment companies and business development companies) (34); investment companies (2).

**Which custodians does Mariner Investment Group, LLC use?**
Mariner Investment Group, LLC's most recent Form ADV filing (Schedule D, Section 5.K(3)) lists J.P. Morgan Securities LLC and SG Americas Securities, LLC as custodians holding 10% or more of its separately managed account assets.

**Does Mariner Investment Group, LLC report any disciplinary disclosures?**
Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/124744

**What changed in Mariner Investment Group, LLC's recent Form ADV filings?**
In the September 2026 filing data: Employees performing advisory functions went from 91 to 89. Regulatory assets under management went from $149,623,092,189 to $176,308,128,651 (+18%). Added an office in Purchase, NY. No longer lists an office in Harrison, NY.

## From the Form ADV filing

### Compensation (Item 5.E)
- A percentage of assets under your management
- Performance-based fees

### Custodians (Schedule D, Section 5.K(3))
- J.P. Morgan Securities LLC
- SG Americas Securities, LLC

Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.

### Regulatory assets under management (Item 5.F)
- Total: $176,308,128,651
- Discretionary: $176,308,128,651
- Non-discretionary: $0

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| Investment companies | 2 | $4,396,190,611 |
| Pooled investment vehicles (other than investment companies and business development companies) | 34 | $127,217,602,356 |
| Pension and profit sharing plans (but not the plan participants or government pension plans) | Fewer than 5 | $2,782,251,124 |
| Sovereign wealth funds and foreign official institutions | Fewer than 5 | $41,912,084,560 |

### Advisory services (Item 5.G)
- Portfolio management for investment companies (and business development companies)
- Portfolio management for pooled investment vehicles (other than investment companies)
- Portfolio management for businesses (other than small businesses) or institutional clients

### Firm details
- Registered since: 2003 (23 years)
- Employees: 176 total, 89 performing advisory functions
- Wrap fee program participation: No
- States registered or notice-filed: CT, MD, NJ, NY
- Disclosures (Item 11): Reports no disclosure items on Form ADV Item 11.

### Other offices (Schedule D, Section 1.F), as of the September 2026 filing
- Columbia, MD
- London
- Purchase, NY
- Rowayton, CT
- Summit, NJ

### Websites listed on Form ADV (Item 1.I)
- [brightmeadowcapital.com](https://brightmeadowcapital.com)
- [marinerinvestment.com](https://marinerinvestment.com)
- LinkedIn @brightmeadow
- LinkedIn @mariner-investment-group

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | $188,025,970,411 | 109 | April 16, 2021 |
| October 2022 | $219,371,099,362 | 114 | August 25, 2022 |
| October 2023 | $180,493,766,178 | 117 | July 3, 2023 |
| October 2024 | $126,022,034,338 | 126 | March 28, 2024 |
| October 2025 | $119,844,184,594 | 134 | March 7, 2025 |
| October 2026 | $176,308,128,651 | 176 | August 28, 2026 |

Regulatory assets under management: $188,025,970,411 in the October 2021 data and $176,308,128,651 in the October 2026 data, down 6%.
Total employees: 109 in October 2021 and 176 in October 2026.

## Changes in the filing (last 12 months)

### September 2026
- Employees performing advisory functions went from 91 to 89.
- Regulatory assets under management went from $149,623,092,189 to $176,308,128,651 (+18%).
- Added an office in Purchase, NY.
- No longer lists an office in Harrison, NY.

### April 2026
- No longer lists the business name Galton Capital Group IV, LLC.
- Employees performing advisory functions went from 74 to 91.
- Regulatory assets under management went from $119,844,184,594 to $149,623,092,189 (+25%).
- Changed its office addresses in Summit, NJ.
- Added an office in Harrison, NY.
- Added an office in London.
- No longer lists an office in New York, NY.
- Updated its list of owners and control persons (Schedule A).

### January 2026
- No longer registered or notice-filed in NC.

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. Mariner Investment Group, LLC (CRD 124744): Form ADV filing data as of October 2026.