Broker-dealer firm · Missoula, MT
SGL Investment Advisors, Inc.
SEC-registered investment adviser · CRD 145167 · SEC 801-80443
At a glance
SGL Investment Advisors, Inc. is an SEC-registered investment adviser based in Missoula, Montana, with $440 million in regulatory assets under management as of its Form ADV filed September 25, 2026. Its largest client group by assets is high-net-worth individuals, and it reports 858 individual clients. By Form ADV it is a broker-dealer firm, ranked 215th of 391 broker-dealer firms and 8,372nd of 17,210 SEC-registered advisers by assets.
Main office 406-721-0999sglinvestmentadvisors.comLinkedInAs filed on Form ADV
- Regulatory AUM
- $440M
- Rank among broker-dealer firms
- #215 of 391
- Rank among all SEC RIAs
- #8,372 of 17,210
- Rank in Montana
- #11 of 24
- Individual clients
- 858
- High-net-worth clients
- 92
- Accounts
- 1,533
- Discretionary
- 100% of AUM
- Employees
- 7
- Advisory staff
- 6
- Offices
- 1
Owners and executives on its Form ADV
- Scott G. LongChairman of the Board
- Susan E. WilliamsPresident
- Joseph D. VinsoDirector
- Michael F KleeseDirector
- Bruce A. CostaDirector
- Darla M. FelixChief Financial Officer/ Chief Compliance Officer/secretary
- Robert G. SeidenschwarzDirector
Custody and brokerage
Broker-dealer
Hybrid RIA
SGL Investment Advisors, Inc. is a hybrid RIA: 5 of its employees are also registered representatives of a broker-dealer. It names an affiliated broker-dealer: S.G. Long & Company.
- S.G. Long & Company ↗CRD 47511
Who it serves
| Client type | Clients | Regulatory AUM | Share |
|---|---|---|---|
| High-net-worth individuals | 92 | $207M | 47% |
| Individuals | 766 | $181M | 41% |
| Charitable organizations | 10 | $29M | 6% |
| Corporations or other businesses | 10 | $19M | 4% |
| State or municipal government entities | 1 | $4M | <1% |
| Other | 4 | $0M | <1% |
Disciplinary disclosures
SGL Investment Advisors, Inc. reports no disciplinary disclosures in Item 11 of Form ADV. Read the details on the SEC’s adviser search ↗
Services
- Portfolio management for individuals and small businesses
How it’s paid
- A percentage of assets under management
Form ADV and brochures on the SEC’s adviser search ↗sglinvestmentadvisors.com ↗
AtlasMembers
The full record on SGL Investment Advisors, Inc.
Ten years of SEC filings, its owners and contacts, and how it stacks up against its peers. Atlas members see all of it.
- Assets, accounts, clients and staff, ten years of filings
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- Growth over one, three and five years
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- Rank against 149 peers of its type and size
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- Owners and executives, with titles and stakes
- 7 namedLocked
- Main office, fax and compliance officer
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- Filing changes this year, with alerts
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Free while Atlas launches: create a free account and confirm your email. Every figure comes from SEC filings.
Background
Questions
How much does SGL Investment Advisors, Inc. manage?
SGL Investment Advisors, Inc. reports $440 million in regulatory assets under management across 1,533 accounts, 100% of it on a discretionary basis, on its Form ADV filed September 25, 2026.
What kind of firm is SGL Investment Advisors, Inc.?
SGL Investment Advisors, Inc. is a broker-dealer firm by its Form ADV answers. The firm is itself registered as a broker-dealer as well as an investment adviser.
Who are SGL Investment Advisors, Inc.’s clients?
By assets, its largest client types are high-net-worth individuals ($207 million, 92 clients); individuals ($181 million, 766 clients); charitable organizations ($29 million, 10 clients).
Does SGL Investment Advisors, Inc. have any disciplinary history?
SGL Investment Advisors, Inc. reports no disciplinary disclosures in Item 11 of its Form ADV. Check the SEC’s adviser search for the latest record.
Where these numbers come from
Every figure is SGL Investment Advisors, Inc.’s own answer on its latest Form ADV, from the SEC’s registered-adviser list as of October 1, 2026: regulatory assets and accounts (Item 5.F), clients by type (5.D), employees (5.A and 5.B), compensation (5.E) and services (5.G). Custodians come from Schedule D 5.K(3) of its latest filing (2026-09-25), which lists those holding 10% or more of separately managed account assets and the amount at each. “Hybrid” means some employees are also registered representatives of a broker-dealer (Item 5.B(2)); affiliated broker-dealers are the related persons it lists in Item 7.A and Schedule D. Firm type comes from its own answers: broker-dealer firms are registered broker-dealers themselves (Item 6.A); private fund advisers manage mostly private funds (Item 7.B, 5.D); wealth managers manage at least half their assets for individuals (5.D). Ranks compare it by regulatory assets with every SEC-registered adviser and with firms of its type. Figures are as of the firm’s last annual update, so they can lag recent deals and market moves. Regulatory AUM counts assets the firm continuously supervises and can differ from what a firm markets.
Not an endorsement or a recommendation. Before hiring any adviser, read its Form ADV Part 2A brochure and check its record on the SEC’s adviser search. How to check a financial advisor →