# Mariner Institutional, LLC

> Mariner Institutional, LLC is an SEC-registered investment advisory firm in Winter Park, FL, registered since 2001, reporting $1 billion to $5 billion in regulatory assets under management in its Form ADV filing dated August 5, 2026.

- CRD: 111964
- Filed as: MARINER INSTITUTIONAL, LLC
- Also doing business as: ANDCO CONSULTING, LLC, MARINER
- Registration: SEC-registered investment adviser (status as filed: Approved)
- Location: Winter Park, FL
- Filing period: October 2026
- Form ADV filing dated: August 5, 2026
- SEC record (IAPD): https://adviserinfo.sec.gov/firm/summary/111964
- AdvisorCensus page: https://advisorcensus.com/firm/mariner-institutional-llc-winter-park-fl-111964

## Quick answers

**How is Mariner Institutional, LLC compensated?**
On its Form ADV (Item 5.E, October 2026), Mariner Institutional, LLC reports these compensation arrangements: a percentage of assets under its management; hourly charges; fixed fees (other than subscription fees).

**Where is Mariner Institutional, LLC located?**
Mariner Institutional, LLC's principal office is in Winter Park, FL, according to its Form ADV; the September 2026 filing also lists 15 other offices (Schedule D, Section 1.F).

**Is Mariner Institutional, LLC registered with the SEC or a state?**
Mariner Institutional, LLC is an SEC-registered investment advisory firm, registered since 2001. Status as filed: Approved. CRD 111964.

**How much does Mariner Institutional, LLC manage?**
Mariner Institutional, LLC reports $2,822,300,000 in regulatory assets under management in its Form ADV filing dated August 5, 2026 (100% discretionary).

**How have Mariner Institutional, LLC's assets and staff changed since 2021?**
In the Form ADV data for Mariner Institutional, LLC: Regulatory assets under management: $296,600,000 in the October 2021 data and $2,822,300,000 in the October 2026 data, up 852%. Total employees: 90 in October 2021 and 148 in October 2026. Assets under management move with markets as well as with clients coming and going.

**What types of clients does Mariner Institutional, LLC serve?**
By number of clients on Form ADV Item 5.D: charitable organizations (19); pension and profit sharing plans (but not the plan participants or government pension plans) (14); corporations or other businesses not listed above (10).

**Does Mariner Institutional, 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/111964

**Does Mariner Institutional, LLC state an account minimum?**
Its Form ADV Part 2A brochure dated June 26, 2026 says: "We do not have a minimum plan size that we will accept, nor do we have a minimum stated fee." "As stated in “Item 5 – Fees & Compensation,” we do not have minimum plan size requirements, nor a stated minimum fee for establishing a new client relationship for investment consulting services."

**What changed in Mariner Institutional, LLC's recent Form ADV filings?**
In the September 2026 filing data: Updated its list of owners and control persons (Schedule A).

## From the Form ADV filing

### Compensation (Item 5.E)
- A percentage of assets under your management
- Hourly charges
- Fixed fees (other than subscription fees)

### Fees and minimums (Form ADV Part 2A brochure dated June 26, 2026)

- Account minimum: None

> We do not have a minimum plan size that we will accept, nor do we have a minimum stated fee.

> As stated in “Item 5 – Fees & Compensation,” we do not have minimum plan size requirements, nor a stated minimum fee for establishing a new client relationship for investment consulting services.

- Minimum annual fee: None

> We do not have a minimum plan size that we will accept, nor do we have a minimum stated fee.

> As stated in “Item 5 – Fees & Compensation,” we do not have minimum plan size requirements, nor a stated minimum fee for establishing a new client relationship for investment consulting services.

As stated in the firm's brochure. Fees can differ by service and may be negotiable.

### Regulatory assets under management (Item 5.F)
- Total: $2,822,300,000
- Discretionary: $2,822,300,000
- Non-discretionary: $0

### Clients (Item 5.D)

| Client type | Clients | Assets |
| --- | --- | --- |
| High net worth individuals | 8 | $513,800,000 |
| Pension and profit sharing plans (but not the plan participants or government pension plans) | 14 | $569,700,000 |
| Charitable organizations | 19 | $1,086,300,000 |
| State or municipal government entities (including government pension plans) | 8 | $456,800,000 |
| Corporations or other businesses not listed above | 10 | $195,700,000 |

### Advisory services (Item 5.G)
- Portfolio management for individuals and/or small businesses
- Pension consulting services
- Selection of other advisers (including private fund managers)
- Other

### Firm details
- Registered since: 2001 (25 years)
- Employees: 148 total, 148 performing advisory functions
- Wrap fee program participation: No
- States registered or notice-filed: AZ, DC, FL, IA, IL, IN, KS, KY, LA, MA, MI, MO, NE, NV, OH, OK, PA, TX, WI
- 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
- Bloomfield Hills, MI
- Chicago, IL
- Cincinnati, OH
- Clayton, MO
- Greenville, SC
- Newport Beach, CA
- Oakbrook Terrace, IL
- Omaha, NE
- Overland Park, KS
- Pittsburgh, PA
- Plano, TX
- Reno, NV
- Rockland, MA
- Tulsa, OK
- West Chester, OH

### Websites listed on Form ADV (Item 1.I)
- marinerwealthadvisors.com
- marinerwealthadvisors.com/our-services/business/mariner-institutional
- marinerwealthadvisors.com/southeastern-advisory-services
- LinkedIn @access-mariner
- LinkedIn @andco-consulting

## Assets and staff over time

| Data period | Regulatory assets under management | Employees | Filing dated |
| --- | --- | --- | --- |
| October 2021 | $296,600,000 | 90 | March 29, 2021 |
| October 2022 | $526,200,000 | 87 | March 29, 2022 |
| October 2023 | $718,800,000 | 98 | March 28, 2023 |
| October 2024 | $976,600,000 | 90 | May 17, 2024 |
| October 2025 | $2,543,100,000 | 113 | March 28, 2025 |
| October 2026 | $2,822,300,000 | 148 | August 5, 2026 |

Regulatory assets under management: $296,600,000 in the October 2021 data and $2,822,300,000 in the October 2026 data, up 852%.
Total employees: 90 in October 2021 and 148 in October 2026.

## Changes in the filing (last 12 months)

### September 2026
- Updated its list of owners and control persons (Schedule A).

### April 2026
- Employees performing advisory functions went from 113 to 148.
- Regulatory assets under management went from $2,543,100,000 to $2,822,300,000 (+11%).
- Changed its office addresses in Plano, TX.
- Added an office in Chicago, IL.
- Added an office in Clayton, MO.
- Added an office in Greenville, SC.
- Added an office in Newport Beach, CA.
- Added an office in Omaha, NE.
- Added an office in Rockland, MA.
- Added an office in Tulsa, OK.
- Added an office in West Chester, OH.
- Updated its list of owners and control persons (Schedule A).

### February 2026
- Registered or notice-filed in MA.

## Source

Form ADV as filed, October 2026. Values appear as filed. Cite as: AdvisorCensus. Mariner Institutional, LLC (CRD 111964): Form ADV filing data as of October 2026.