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J.M. Arbour

Wealth managementRIA

Gardiner, MECRD 313352Updated

J.M. Arbour is an investment adviser based in Gardiner, ME, registered with the SEC since 2022. It provides financial planning and investment management. Its clients include individual clients and high-net-worth individuals. Its regulatory assets under management total $183 million, as filed on 31 March 2026.

720
Clients
$254K
AUM per individual client
10
Advisory staff
4
Offices
See fees
Annual fee

From Form ADV filed 31 March 2026SEC record

Services and clients

J.M. Arbour provides financial planning, portfolio management for individuals and small businesses, and portfolio management for institutions.

J.M. Arbour reports 720 clients. They include 692 individual clients and 28 high-net-worth individuals. Of its assets, 100.0% ($183M across 1,253 accounts) are managed with discretion.

Clients and assets by client type
Clients720 clients
Assets$183M
Client typeClientsAssets
Individuals (other than HNW)96%67%
High-net-worth individuals4%33%
Client breakdown and activity details
Individuals (other than HNW)
Clients
692
Regulatory AUM
$123M
AUM share
67.0%
Avg. per client
$177K
High-net-worth individuals
Clients
28
Regulatory AUM
$60.5M
AUM share
33.0%
Avg. per client
$2.16M

Total

Clients
720
Regulatory AUM
$183M
AUM share
100%
Avg. per client
$254K
Clients outside the U.S.
0%
Clients advised without assets under management last fiscal year
0
Private funds advised
0
Financial planning clients last fiscal year
0

Fees and minimums

J.M. Arbour is paid through a percentage of assets under management, hourly charges and fixed fees (other than subscription fees). The reviewed brochures do not disclose an asset-based fee rate. Read the SEC-filed brochure. The brochure also prices 2 other services, listed under fee details.

Fee details and sources

Other fees

Financial Planning
Financial planning is billed hourly at up to $400 per hour or as a fixed fee of up to $5,000.
Retirement Plan Consulting
Retirement plan consulting is billed at 0.03% to 0.50% of plan assets, negotiable by plan size and number of participants.

Ownership and people

Jac Arbour owns 75% or more of J.M. Arbour. The leadership team of J.M. Arbour includes Chief Compliance Officer Jac Arbour. It has 12 employees, 10 of them in advisory roles.

Loading adviser profiles

Staff

  • 12 employees
  • 10 in advisory functions
  • 10 state-registered reps
  • 4 insurance agents
  • 10 soliciting firms
Who owns the firm
J.M. Arbour, LLC· the adviser
  • Jac Arbour

    Control person · since November 2016

    Owns 75% or more of J.M. Arbour, LLC

Growth and acquisitions

J.M. Arbour’s regulatory assets grew Infinity× from $0 (May 2022) to $183M (March 2026); employees rose from 7 to 12.

By annual filing
Measure
Figures from each annual filing
FiledRegulatory AUMClientsStaffEmployeesOffices
Mar 2026March 2026$183M720124
Mar 2025March 2025$154M65493
Jul 2024July 2024$116M49382
Mar 2023March 2023$92.9M45082
May 2022May 2022$0072

Offices and registration details

Besides its headquarters, J.M. Arbour has 3 offices (2 private residences, listed without an address), with 2 listed addresses across 2 states.

Listed office addresses by state

Maine · 1 listed address

  • 1 Brunswick Avenue, GardinerHQ

Other business names

J.M. Arbour has reported 1 other business name to the SEC.

  • J.M. Arbour Multi-Family Office

Contact and registration details

Legal name
J.M. Arbour, LLC
Headquarters
1 Brunswick Avenue, Gardiner, ME 04345
SEC file
801-124962
Structure
Maine LLC
Fiscal year end
December

Custodians

J.M. Arbour’s named custodian for separately managed accounts is Charles Schwab ($183M). J.M. Arbour has custody of $75.7M for 325 clients.

Reported separately managed account assets by custodian
$183M
named custodians
  • Charles SchwabCharles Schwab & Co., Inc. · Westlake, TX · $183M100%

Investments and reported holdings

At year end, J.M. Arbour’s separately managed accounts were largely in funds (44%) and stocks (28%). Its reported 13F holdings for the quarter ended 31 March 2026 total $104M across 119 positions; the largest are iShares TR (5.8%), iShares TR (4.0%) and iShares TR (3.2%).

What the accounts hold

Separately managed account assets by class, year end
  • Stocks28%
  • Funds44%
    • Registered funds39%
    • Pooled vehicles5%
  • Bonds2%
    • State and local bonds1%
    • Investment grade corporate bonds1%
  • Cash27%
Loading reported holdings

Common questions

How many clients does J.M. Arbour have?

J.M. Arbour has 720 clients and manages $183 million for them, as of March 2026. They include 692 individual clients and 28 high-net-worth individuals.

Source: Form ADV Part 1A, Items 5.D and 5.F, filed 31 March 2026

What services does J.M. Arbour offer?

J.M. Arbour provides financial planning, portfolio management for individuals and small businesses, and portfolio management for institutions.

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

Which custodians does J.M. Arbour use?

J.M. Arbour’s separately managed account assets are held at Charles Schwab & Co., Inc. (Westlake, TX), with $183M. Only custodians holding at least a tenth of those assets are named.

Source: Form ADV Part 1A, Schedule D, Section 5.K.(3), filed 31 March 2026

How many financial advisors does J.M. Arbour have?

J.M. Arbour has 10 investment adviser representatives registered with state securities authorities, out of 12 employees, and 10 perform investment advisory functions. 0 employees are registered representatives of a broker-dealer and 4 employees are 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 J.M. Arbour invest in?

At the end of its last fiscal year, J.M. Arbour’s separately managed accounts held 39% registered funds (mutual funds, ETFs, BDCs), 28% exchange-traded equities, 27% cash and equivalents, 5% pooled vehicles (private funds and similar), 1% state and local bonds and 1% investment grade corporate bonds.

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

Who owns J.M. Arbour?

J.M. Arbour’s direct owner is Jac Arbour (75% or more).

Source: Form ADV Part 1A, Schedules A and B, filed 31 March 2026

How does J.M. Arbour get paid?

J.M. Arbour 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 J.M. Arbour?

J.M. Arbour’s main office is at 1 Brunswick Avenue, Gardiner, ME 04345. Its phone number is 207-248-6767. Its website is jmarbour.com.

Source: Form ADV Part 1A, Item 1.F, filed 31 March 2026

Sources and methodology

  1. Form ADV Part 1A, amendment filed 31 March 2026. Items 1, 5, 9, 11 and Schedules A, B and D.
  2. J.M. ARBOUR, LLC FORM ADV PART 2 BROCHURE, submitted 31 March 2026.
  3. IAPD firm record, CRD 313352.
  4. SEC registered adviser data, annual Form ADV amendments filed 13 May 2022 to 31 March 2026. Items 1.F and 5.
  5. SEC investment adviser representative register, as of 9 October 2026; loaded 10 October 2026.
  6. Form 13F-HR, filed 21 April 2026 for the quarter ended 31 March 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.

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