Welcome to Northwestern Mutual in Middleton

Northwestern Mutual - Middleton enjoys a rich heritage as a provider of financial planning services. Since 1907, our growing firm has worked diligently to help people achieve their goals for financial growth and security.

Expert guidance

We realize that individuals have wide-ranging financial needs. For many, providing financial security for those they care about is a major concern. For some individuals, accumulating substantial wealth or preserving it, is a primary goal. Still others want to create an estate plan and fund it. Business owners may want to ensure that what they have built can pass smoothly from one generation to the next. Preparing for your financial future in any of these situations can be complex. It is important to have the help of highly trained and experienced professionals. 



Community Focus

One of the most rewarding aspects of our workplace is our commitment to bettering the lives of others. With that in mind, we have put our collective efforts behind Northwestern Mutual Foundation’s national philanthropic program to combat childhood cancer. 

Individually, whether we serve on a board, coach or tutor, we are passionate about our philanthropic activities. 

Career and internship opportunities

We are proud of the organization we have built by providing meaningful work, leadership and development opportunities and work-life balance.

We are growing and selectively looking to attract and develop high-quality individuals with integrity, professionalism, and a commitment to growth and development.  Learn more about our career and internship opportunities.



Find an office near you

Northwestern Mutual - Middleton is honored to be in a position to help strengthen the families in Southern Wisconsin and Northern Illinois.

Northwestern Mutual - Middleton
1600 Aspen Commons Ste 800
Middleton, WI 53562
(608) 836-3080

To find out more about each of our district offices, please visit the websites below:

Northwestern Mutual-

3960 Hillside Dr Ste 101
Delafield, WI 53018
(262) 646-6737
Northwestern Mutual-

400 Midland Ct Ste 104
Janesville, WI 53546
(608) 314-9260

Click on the interactive map to find a location closest to you.


Get to know us

We invite you to take a look around our website.  Learn about our firm culture, our philanthropic passions and the people and events that are making headlines for Northwestern Mutual - Middleton.




Josh Steven Kosnick, ChFC®, CLU®

Managing Partner


As a financial representative intern, you'll get real-world job experience as you discover a career with flexibility and rewards.

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Looking for a supportive team atmosphere that will provide guidance and mentorship? Do you not just want an internship, but one where you can truly make an impact on others? Need one that works around your school schedule?

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#1 in the Financial Services Industry

- Selling Power's "50 Best Companies to Sell for Now." October 2016

Top Ten Internship for 22 Straight Years

- Vault Guide to Internships, 2018 edition

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Largest Dividend Payout In Company History

In 2019, we expect the largest dividend payout for life and disability income insurance policyowners in company history. Read more.

If You Live For It, We’ll Help You Plan For It.

See what our version of financial planning looks like. Read now.

See Your Complete Financial Picture

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


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