AdFi
SI

SGL INVESTMENT ADVISORS, INC.

SEC Registered

Four Decades of Perspective

MISSOULA, MThttps://sglinvestmentadvisors.com406-721-0999
Assets Under Management
$100M–$500M
Employees
7
Office Locations
1 office
Total Accounts
1236

About the firm

SG Long Financial (operating as SGL Investment Advisors) is an independent, fiduciary investment advisory firm based in Missoula, MT. For over 40 years, the firm has worked with families, business owners, and multi-generational households to bring structure and clarity to complex financial lives, focusing on integrated planning, disciplined decision-making, and long-term continuity across investment, tax, estate, and legacy priorities.

Firm Focus

Client segments reported on the firm's SEC Form ADV — applies to all advisors at the firm.

High Net Worth

Areas of expertise

Wealth ManagementIntegrated Financial PlanningInvestment ManagementRetirement PlanningEstate PlanningLegacy PlanningBusiness SuccessionPhilanthropic StrategyMultigenerational PlanningTax-aware InvestingFiduciary Advisory+1 more

Services

Integrated wealth management including investments (stocks, bonds, funds), retirement and estate planning, insurance (life, disability, and long-term care), succession planning, philanthropic and charitable strategy, legacy planning, and a structured Wealth Management System covering wealth foundation, expansion, transition, and continuity.

estate_planninginsurancewealth_management

Who they serve

Individuals, families, business owners, and multi-generational households navigating complex financial decisions, business transitions, multigenerational planning, or significant long-term wealth responsibility.

Client segmentClientsAssets managed
Individuals (Non-HNW)614$133M
High Net Worth Individuals98$207M
State/Municipal Entities11

734 total clients reported on Form ADV.

Leadership

Sg Long Financial Services Corp.
HOLDING CORPORATION
Scott Gregory Long
CHAIRMAN OF THE BOARD
Susan Elaine Williams
SECRETARY
Joseph David Vinso
DIRECTOR
Dirk Nathan Cooper
DIRECTOR
Michael F Kleese
DIRECTOR
Scott Gregory Long
OWNER
Bruce Anthony Costa
DIRECTOR
Susan Elaine Williams
OWNER
Darla Marie Felix
CHIEF FINANCIAL OFFICER/ CHIEF COMPLIANCE OFFICER

Office locations

1 office in 1 state
MT
MISSOULAHQ

Advisors at this firm

15 advisors in the directory

Regulatory & compliance

CRD number
#145167
SEC Number
801-80443
Disciplinary History
No
Fee Model & Minimums
Model: AUM

Data as of September 26, 2025 · Source: SEC IAPD & FINRA BrokerCheck

Contact Information

Find an advisor that fits

Search AdvisorFinder's marketplace to compare financial advisors by specialty, location, fees, and more.

Editorial disclosure

This profile was compiled and published by AdvisorFinder as editorial content using publicly available information from the SEC's IAPD database and FINRA BrokerCheck. SGL INVESTMENT ADVISORS, INC. has not reviewed, approved, or endorsed this profile and is not responsible for its accuracy. Regulatory records change over time — always verify the current record directly on the SEC or FINRA websites before making any decision.

SGL INVESTMENT ADVISORS, INC. | AdvisorFinder