Skip to content
Susan Williams, portrait

Susan Williams

President at SGL Investment Advisors in Missoula, MT

Investment adviser and broker registrationsUpdated

Susan Williams is President of SGL Investment Advisors, Inc., an investment adviser managing $440M, and works from its Missoula, MT office. Susan Williams has been registered as an investment adviser representative through SGL Investment Advisors since 24 September 2008, has 32 years in the industry across 2 firms and has passed 5 licensing exams.

32
Years in industry
18
Years at firm
2
Adviser firms
2
States registered

From the IAPD record, checked 22 October 2026SEC record

Career

Susan Williams has been President of SGL Investment Advisors since March 2023, is a control person of the firm and directly owns under 5% of it. Susan Williams holds a Bachelor of Science in Economics from Lafayette College.

SGL Investment Advisors, Inc. is a Missoula, MT firm with $440M under management, 883 clients and 6 advisers in one office, as of its September 2026 filing.

Susan Williams is Chief Executive Officer of SG Long Financial and also serves as a Board Member and Financial Advisor. She serves in a variety of management roles for the firm and has over 35 years of experience in the financial services industry.

Susan Williams’ longest registration is the current one, 30 years at S.G. Long & Company since 1996.

  1. – present · 18 years
    Missoula, MT · Adviser representative · Firm CRD 145167
  2. S.G. Long & CompanyAlso current
    – present · 30 years
    Adviser representative and broker · Firm CRD 47511

Credentials and registrations

Investment adviser representative registrations

Susan Williams is registered as an investment adviser representative in 2 states. The first approvals date from September 2008; the most recent is Texas, in December 2020.

  • MontanaSince 24 September 2008
  • TexasSince 21 December 2020

Examinations

Series 99TO2 January 2023
Name
Operations Professional Examination
SIECredited
Name
Securities Industry Essentials Examination
Series 2410 August 1999
Name
General Securities Principal Examination
Series 74 June 1994
Name
General Securities Representative Examination
Series 659 April 1994
Name
Uniform Investment Adviser Law Examination
Series 639 April 1994
Name
Uniform Securities Agent State Law Examination

Key facts

Full name
Susan Elaine Williams
CRD
2290587
Firm
SGL Investment Advisors · CRD 145167
Role
President
Office
283 W. FRONT STREET SUITE 302, Missoula, MT 59802-4328
Registration
Investment adviser and broker registrations
In the industry since
June 1994
Disciplinary history
Not yet shown here · SEC record · BrokerCheck

Common questions

Where does Susan Williams work?

Susan Williams has been President of SGL Investment Advisors, Inc. since March 2023, and is a control person of the firm.

Source: Form ADV, Schedule A, filed 25 September 2026

Is Susan Williams a financial advisor?

Yes. Susan Williams has a current investment-adviser registration in Montana and Texas, through SGL Investment Advisors since September 2008.

Source: IAPD individual record, checked 22 October 2026

How many years of experience does Susan Williams have?

Susan Williams has 32 years in the financial industry, since June 1994, across 2 adviser firms.

Source: IAPD individual record, checked 22 October 2026

What exams has Susan Williams passed?

Susan Williams has passed 5 licensing exams: the Series 65, Series 63, Series 7, Series 24 and Series 99TO. The earliest, the Series 65, was passed in April 1994. FINRA credited Susan Williams with the SIE, which began in October 2018.

Source: IAPD individual record, checked 22 October 2026

Where is Susan Williams based?

Susan Williams’ registered office is in Missoula, MT.

Source: IAPD individual record, checked 22 October 2026

Is Susan Williams registered with FINRA?

Yes. Susan Williams has a current broker registration, under CRD 2290587.

Source: FINRA BrokerCheck

How can I verify Susan Williams’ record?

Search CRD 2290587 on the SEC’s adviser search (adviserinfo.sec.gov) and FINRA’s broker search (brokercheck.finra.org), which publish Susan Williams’ full registration record.

Source: IAPD individual record, checked 22 October 2026

Leadership at SGL Investment Advisors

Sources

  1. IAPD individual record, CRD 2290587, checked 22 October 2026. Registration status, employment history and examinations.
  2. Form ADV Part 1A, Schedules A and B of SGL Investment Advisors, Inc., filed 25 September 2026. Title, control and ownership bands.
  3. SGL Investment Advisors team page. Biography, education, credentials, awards and the portrait, reproduced for identification.