Our Mission: Enriching Lives and Building Financial Security

Instilling Confidence

Northwestern Mutual has a solid foundation with more than 155 years of helping clients achieve financial security. This strong history, combined with a structure of local network offices, instills confidence with clients. Our financial representatives share the values and ideals of their local community and understand the environment in which people live and work and, therefore, what it takes to succeed.

With exclusive access to a vast array of high-quality financial products, services, and expertise, each financial representative takes a personalized approach with their clients. They work closely to understand their values and goals and then provide personalized financial plans that can help manage financial risk and achieve their financial security goals.

Through our local and Network offices, you have access to our financial representatives, advisors, and specialists who can address your financial goals and objectives in areas like personal planning analysis, retirement solutions, estate analysis, asset allocation, and business needs analysis.  Northwestern Mutual has offices in the following locations:      

Bozeman (406) 587-4254
Billings (406) 248-2610 
Missoula (406) 721-2400
Butte (406) 221-1763
Kalispell (406) 257-4754
Great Falls (406) 761-8404
Helena (406) 458-3336
Havre (406) 265-5527
Chinook (406) 357-3312

Greg V Castronovo, CLU®, ChFC®

Managing Partner


Northwestern Mutual financial representatives have the opportunity to determine their own financial futures while making an impact on others.

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Looking for a career that allows flexibility and exceptional income potential? Do you want top-notch training, mentorship and resources? Have you been searching for a company that demonstrates a commitment to diversity and giving back to the community?

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#1 in the Financial Services Industry

- Selling Power's "50 Best Companies to Sell for Now." August 2015

Top Ten Internship for 20 Straight Years

- Vault Guide to Internships, 2016 edition

See Your Complete Financial Picture

Review your policies, go paperless, pay your premiums and aggregate your credit cards and accounts. Get access now.

Live Life Differently: Our Perspective

Our goal is to help you Live Life Differently. What do we mean when we say Live Life Differently? Read our CEO’s perspective.

Unique Approach to Retirement Income Planning

Increase your probability of success in retirement by leveraging our unique retirement income planning approach.

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To learn more about Northwestern Mutual Investment Services, LLC and its financial representatives, visit: FINRA BrokerCheck