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William Cummings, portrait

William Cummings

Investment adviser representative at J.M. Arbour in Gardiner, ME

Investment adviser registrationUpdated

William Cummings is an investment adviser representative at J.M. Arbour, LLC, an investment adviser managing $183M, and works from its Gardiner, ME office. William Cummings has been registered through J.M. Arbour since 24 June 2022, has 8 years in the industry across 3 firms and has passed the Series 7, Series 63, Series 66 and Series 65.

8
Years in industry
4
Years at firm
3
Adviser firms
1
States registered

From the IAPD record, checked 22 October 2026SEC record

Career

William Cummings has been an investment adviser representative at J.M. Arbour since June 2022, and is not listed among the firm’s executive officers or direct owners. William Cummings holds a Degree in Finance from Rochester Institute of Technology.

J.M. Arbour, LLC is a Gardiner, ME firm with $183M under management, 720 clients and 10 advisers across 4 offices, as of its March 2026 filing.

Will Cummings is an Investment Adviser Representative at J.M. Arbour, focused on helping clients realize their financial goals through an education-first approach. He began his career in financial services as a Registered Representative with Axa Equitable Advisors, after internships as an Economic Analyst at Mechanics Savings Bank and as a Treasury Analyst at Rochester Institute of Technology.

William Cummings’ longest registration is the current one, 4 years at J.M. Arbour since 2022. Before joining J.M. Arbour in 2022, William Cummings was registered through Foundations Investment Advisors LLC and Axa Advisors, LLC.

  1. – present · 4 years
    Gardiner, ME · Adviser representative · Firm CRD 313352
  2. Foundations Investment Advisors LLC
    – · 1 year
    Hallowell, ME · Adviser representative · Firm CRD 175083
  3. Axa Advisors, LLC
    – · under a year
    Rochester, NY · Adviser representative · Firm CRD 6627

Credentials and registrations

Professional designations

Listed by J.M. Arbour

  • CERTIFIED FINANCIAL PLANNER® professional

Investment adviser representative registrations

William Cummings is registered as an investment adviser representative in Maine, since June 2022.

  • MaineSince 24 June 2022

Examinations

Series 652 April 2022
Name
Uniform Investment Adviser Law Examination
Series 6611 February 2020
Name
Uniform Combined State Law Examination
SIECredited
Name
Securities Industry Essentials Examination
Series 6314 August 2017
Name
Uniform Securities Agent State Law Examination
Series 78 June 2017
Name
General Securities Representative Examination

Key facts

Full name
William Sinclair Cummings
CRD
6800327
Firm
J.M. Arbour · CRD 313352
Office
1 BRUNSWICK AVENUE, Gardiner, ME 04345
Registration
Investment adviser registration
In the industry since
February 2018
Disciplinary history
Not yet shown here · SEC record
Firm bio
jmarbour.com

Common questions

Where does William Cummings work?

William Cummings is an investment adviser representative registered through J.M. Arbour, LLC since June 2022, and is not listed among the firm’s executive officers or direct owners.

Source: IAPD individual record, checked 22 October 2026

Is William Cummings a financial advisor?

Yes. William Cummings has a current investment-adviser registration in Maine, through J.M. Arbour since June 2022.

Source: IAPD individual record, checked 22 October 2026

How many years of experience does William Cummings have?

William Cummings has 8 years in the financial industry, since February 2018, across 3 adviser firms.

Source: IAPD individual record, checked 22 October 2026

What exams has William Cummings passed?

William Cummings has passed 4 licensing exams: the Series 7, Series 63, Series 66 and Series 65. The earliest, the Series 7, was passed in June 2017. FINRA credited William Cummings with the SIE, which began in October 2018.

Source: IAPD individual record, checked 22 October 2026

Where did William Cummings work before J.M. Arbour?

Before J.M. Arbour, William Cummings was registered through Axa Advisors, LLC, February 2020 to April 2020.

Source: IAPD individual record, checked 22 October 2026

Where is William Cummings based?

William Cummings’ registered office is in Gardiner, ME.

Source: IAPD individual record, checked 22 October 2026

Is William Cummings registered with FINRA?

No. William Cummings has no current broker registration.

Source: IAPD individual record, checked 22 October 2026

Is William Cummings a CFP?

J.M. Arbour lists William Cummings with the CFP credential (“CERTIFIED FINANCIAL PLANNER® professional”) on its website. CFP Board confirms certification status.

Source: Will S. Cummings biography, jmarbour.com

How can I verify William Cummings’ record?

Search CRD 6800327 on the SEC’s adviser search (adviserinfo.sec.gov), which publishes William Cummings’ full registration record.

Source: IAPD individual record, checked 22 October 2026

Leadership at J.M. Arbour

Sources

  1. IAPD individual record, CRD 6800327, checked 22 October 2026. Registration status, employment history and examinations.
  2. Form ADV Part 1A, Schedules A and B of J.M. Arbour, LLC, filed 31 March 2026. Executive officers and direct owners; this person is not among them.
  3. J.M. Arbour team page. Biography, education, credentials, awards and the portrait, reproduced for identification.