# SGL INVESTMENT ADVISORS, INC.

SGL INVESTMENT ADVISORS, INC. of MISSOULA, MT is an SEC-registered investment adviser.

## Registration

- CRD: 145167
- Type: SEC-registered investment adviser
- SEC file number: 801-80443
- Location: 283 W. FRONT STREET SUITE 302, MISSOULA, MT, 59802-4328
- Phone: 406-721-0999
- Latest filing: 2026-07-23
- Regulatory AUM: $391.6M
- Discretionary AUM: $391.6M
- Clients: 7
- Accounts: 1,236

## Business model

- Compensation: % of AUM
- Clients served: High net worth

## Officers, owners & control persons (18)

| Name | Role | Location |
| --- | --- | --- |
| Scott Gregory Long | CHAIRMAN OF THE BOARD; OWNER | — |
| Susan Elaine Williams | OWNER; PRESIDENT | — |
| Joseph David Vinso | DIRECTOR | — |
| Dirk Nathan Cooper | DIRECTOR | — |
| Michael F Kleese | DIRECTOR | — |
| Bruce Anthony Costa | DIRECTOR | — |
| Darla Marie Felix | CHIEF FINANCIAL OFFICER/ CHIEF COMPLIANCE OFFICER/SECRETARY; SECRETARY/TREASURER | — |
| Robert Guy Isaac Seidenschwarz | DIRECTOR | — |
| SMITH KELLEY JEAN | CCO | — |
| LONG SCOTT GREGORY | CHAIRMAN OF THE BOARD; CHIEF COMPLIANCE OFFICER; OWNER | — |
| WILLIAMS SUSAN ELAINE | OWNER; PRESIDENT; SECRETARY | — |
| VINSO JOSEPH DAVID | DIRECTOR | — |
| COOPER DIRK NATHAN | DIRECTOR | — |
| KLEESE MICHAEL F | DIRECTOR | — |
| COSTA BRUCE ANTHONY | DIRECTOR | — |
| GREENE TESSA NOELLE | CHIEF COMPLIANCE OFFICER | — |
| FELIX DARLA MARIE | CHIEF FINANCIAL OFFICER; CHIEF FINANCIAL OFFICER/ CHIEF COMPLIANCE OFFICER; CHIEF FINANCIAL OFFICER/ CHIEF COMPLIANCE OFFICER/SECRETARY | — |
| SEIDENSCHWARZ ROBERT GUY ISAAC | DIRECTOR | — |


## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/145167/brochure
- Similar advisers: https://search.stillhousedata.com/firm/145167/similar
- Related entities: https://search.stillhousedata.com/firm/145167/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/145167

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Source: public SEC Form ADV data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.