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.
- – present · 18 yearsMissoula, MT · Adviser representative · Firm CRD 145167
- S.G. Long & CompanyAlso current– present · 30 yearsAdviser representative and broker · Firm CRD 47511
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
| Exam | Name | Passed |
|---|---|---|
| Series 99TO | Operations Professional Examination | 2 January 2023 |
| SIE | Securities Industry Essentials Examination | Credited |
| Series 24 | General Securities Principal Examination | 10 August 1999 |
| Series 7 | General Securities Representative Examination | 4 June 1994 |
| Series 65 | Uniform Investment Adviser Law Examination | 9 April 1994 |
| Series 63 | Uniform Securities Agent State Law Examination | 9 April 1994 |
- Name
- Operations Professional Examination
- Name
- Securities Industry Essentials Examination
- Name
- General Securities Principal Examination
- Name
- General Securities Representative Examination
- Name
- Uniform Investment Adviser Law Examination
- Name
- Uniform Securities Agent State Law Examination
- 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
- Firm bio
- sglongfinancial.com
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.
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.
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.
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.
Where is Susan Williams based?
Susan Williams’ registered office is in Missoula, MT.
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.





