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Mariner Institutional

InstitutionalConsultant

Winter Park, FLCRD 111964Updated

Mariner Institutional is an investment adviser based in Winter Park, FL, registered with the SEC since 2001. It provides investment management. Its clients include charitable organizations, pension and profit-sharing plans, and high-net-worth individuals. Its regulatory assets under management total $2.82 billion, as filed on 5 August 2026.

59
Clients
$64.2M
AUM per individual client
148
Advisory staff
16
Offices

From Form ADV filed 5 August 2026SEC record

Services and clients

Mariner Institutional provides portfolio management for individuals and small businesses, pension consulting, and selecting other managers.

Mariner Institutional reports 59 clients. They include 19 charitable organizations, 14 pension and profit-sharing plans, and 10 corporations and other businesses. Of its assets, 100.0% ($2.82B across 59 accounts) are managed with discretion. Of its clients, 1% are outside the U.S. It advised 891 clients without assets under management last fiscal year.

Clients and assets by client type
Clients59 clients
Assets$2.82B
Share of clients and assets by client type
Client typeClientsAssets
High-net-worth individuals14%18%
Pension and profit-sharing plans24%20%
Charitable organizations32%38%
State or municipal government entities14%16%
Corporations and other businesses17%7%
Client breakdown and activity details
High-net-worth individuals
Clients
8
Regulatory AUM
$514M
AUM share
18.2%
Avg. per client
$64.2M
Pension and profit-sharing plans
Clients
14
Regulatory AUM
$570M
AUM share
20.2%
Avg. per client
$40.7M
Charitable organizations
Clients
19
Regulatory AUM
$1.09B
AUM share
38.5%
Avg. per client
$57.2M
State or municipal government entities
Clients
8
Regulatory AUM
$457M
AUM share
16.2%
Avg. per client
$57.1M
Corporations and other businesses
Clients
10
Regulatory AUM
$196M
AUM share
6.9%
Avg. per client
$19.6M

Total

Clients
59
Regulatory AUM
$2.82B
AUM share
100%
Avg. per client
$47.8M
Clients outside the U.S.
1%
Clients advised without assets under management last fiscal year
891
Private funds advised
0

Fees and minimums

Mariner Institutional is paid through a percentage of assets under management, hourly charges and fixed fees (other than subscription fees); its fees and minimums are set out in its brochures on the SEC website.

Ownership and people

Mariner Wealth owns 75% or more of Mariner Institutional and is in turn owned by Mariner Wealth Advisors, LLC (75% or more). Martin Bicknell is CEO; the leadership team includes Chief Investment Officer Bradley Rollins, Chief Operating Officer Cheryl Bicknell and Chief Financial Officer Jeffrey Poe. It has 148 employees.

Leadership

Investment adviser representatives

17 representatives listed in the SEC register as of 9 October 2026.

  • Eric Michael Bokesch
  • Richard J Chaffee
  • Adam M Dietz Mr.
  • Timothy Shepard Duncan
  • Thomas Charles Hardy
  • Daniel Vancleve Johnson
  • David Franklin King
  • Jacob William Lecluyse
  • Tami Lynn Ledger
  • Christopher John Rivers
  • Angelyn Rosson
  • Kenneth George Seropian JR

Staff

  • 148 employees
  • 148 in advisory functions
  • 17 state-registered reps
Who owns the firm
Mariner Institutional, LLC· the adviser
  • Mariner Wealth

    Control person · since April 2024

    Owns 75% or more of Mariner Institutional, LLC

Growth and acquisitions

Mariner Institutional’s regulatory assets grew 9.5× from $297M (March 2021) to $2.82B (August 2026); clients rose from 10 to 59 and employees from 90 to 148. Between 2018 and 2025, 4 advisory firms joined it. The largest by last filed assets were Fourth Street Performance Partners ($4.51B, April 2024) and Southeastern Advisory Services ($0, September 2025, the most recent).

By annual filing
Measure
Figures from each annual filing
Mariner Institutional figures from each annual Form ADV filing
FiledRegulatory AUMClientsEmployeesOffices
August 2026$2.82B5914816
March 2025$2.54B641138
May 2024$977M24908
March 2023$719M19987
March 2022$526M15877
March 2021$297M10907

Firms that joined

  1. 20252 joined

    1. Southeastern Advisory Services
      Form ADV-W, CRD 109817
      Last filed AUM $0
    2. Cardinal Investment Advisors
      Last filed AUM $0
  2. 20241 joined

    1. Fourth Street Performance Partners
      Last filed AUM $4.51B
  3. 20181 joined

    1. Summit Strategies (Summit Strategies Group)
      Form ADV-W, CRD 107161
      No filed AUM

Firms whose SEC withdrawal reports a sale to this firm, and deals reported in the press. Teams that moved without selling a registered firm may not appear.

Offices and registration details

Besides its headquarters, Mariner Institutional has 15 offices, with 16 listed addresses across 14 states.

Listed office addresses by state

Florida · 1 listed address

  • 531 W Morse BLVD, Suite 200, Winter ParkHQ

Other business names

Mariner Institutional has reported 2 other business names to the SEC.

  • Andco Consulting, LLC
  • Mariner

Contact and registration details

Legal name
Mariner Institutional, LLC
Headquarters
531 W Morse BLVD, Suite 200, Winter Park, FL 32789
SEC file
801-58253
Structure
Florida LLC
Fiscal year end
December

Custodians

Mariner Institutional does not have custody of client assets.

Investments and reported holdings

At year end, Mariner Institutional’s separately managed accounts were mostly in funds (99%).

What the accounts hold

Separately managed account assets by class, year end
  • Funds99%
    • Registered funds89%
    • Pooled vehicles10%
  • Cash1%

Common questions

How many clients does Mariner Institutional have?

Mariner Institutional has 59 clients and manages $2.82 billion for them, as of August 2026. They include 19 charitable organizations, 14 pension and profit-sharing plans, and 10 corporations and other businesses.

Source: Form ADV Part 1A, Items 5.D and 5.F, filed 5 August 2026

What services does Mariner Institutional offer?

Mariner Institutional provides portfolio management for individuals and small businesses, pension consulting, and selecting other managers.

Source: Form ADV Part 1A, Item 5.G, from the SEC's 2 October 2026 data file

How many financial advisors does Mariner Institutional have?

Mariner Institutional has 17 investment adviser representatives registered with state securities authorities, out of 148 employees, and 148 perform investment advisory functions. None are registered representatives of a broker-dealer or licensed insurance agents.

Source: Form ADV Part 1A, Items 5.A and 5.B, from the SEC's 2 October 2026 data file

What does Mariner Institutional invest in?

At the end of its last fiscal year, Mariner Institutional’s separately managed accounts held 89% registered funds (mutual funds, ETFs, BDCs), 10% pooled vehicles (private funds and similar) and 1% cash and equivalents.

Source: Form ADV Part 1A, Items 5.K.(1) and 7.B, from the SEC's 2 October 2026 data file

Who owns Mariner Institutional?

Mariner Institutional is owned through a chain of holding companies by Mariner Wealth Advisors, LLC and Green Equity Investors VIII L.P. Its direct owner is Mariner Wealth (75% or more).

Source: Form ADV Part 1A, Schedules A and B, filed 5 August 2026

How does Mariner Institutional get paid?

Mariner Institutional is paid through a percentage of assets under management, hourly charges and fixed fees. Its Form ADV lists no commissions or performance-based fees among how it is paid.

Source: Form ADV Part 1A, Item 5.E, from the SEC's 2 October 2026 data file

How do I contact Mariner Institutional?

Mariner Institutional’s main office is at 531 W Morse BLVD, Suite 200, Winter Park, FL 32789. Its phone number is 844-442-6326. Its website is marinerwealthadvisors.com.

Source: Form ADV Part 1A, Item 1.F, filed 5 August 2026

Sources and methodology

  1. Form ADV Part 1A, amendment filed 5 August 2026. Items 1, 5, 9, 11 and Schedules A, B and D.
  2. IAPD firm record, CRD 111964.
  3. SEC registered adviser data, annual Form ADV amendments filed 29 March 2021 to 5 August 2026. Items 1.F and 5.
  4. Form ADV-W withdrawals of the firms listed under Growth and acquisitions, each linked to its IAPD record, from the SEC's Form ADV-W data. Item 1.
  5. SEC investment adviser representative register, as of 9 October 2026; loaded 10 October 2026.

Retrieved 15 October 2026. All are published by the SEC and may have been amended since. Disciplinary history is not yet shown here. The SEC publishes the complete record, including any disciplinary events, and it is the authoritative place to check one. The logo is reproduced for identification from Mariner Institutional, LLC, website.

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