Office Profile

The Northwestern Mutual - Appleton Network Office

Helping clients manage financial risk and achieve their goals of financial security is exciting, demanding, rewarding, and, most importantly, it is a team effort.  Our financial representatives have the strength of Northwestern Mutual behind them.

We value a strong work ethic and a desire for personal and professional growth.  We continually support our financial representatives by providing them with the tools and resources they need to succeed. 

For over 60 years, our office has guided individuals and local business owners in making confident financial decisions.  The expertise of our Financial Advisors, Representatives, and Specialists serve the Fox Valley and surrounding counties. 

2025 Vision Statement

Our remarkable client planning experience is central in providing lifetime financial security trailed to how people live and work today.  An experience delivered through a trusted advisor, connected by an intuitive and dynamic digital platform, and powered by the financial strength of Northwestern Mutual. 

Transforming financial security for all people 

Our agency led career advisor system is developing industry leading integrated advisors resulting in high client satisfaction, exceptional persistency, and extraordinary market growth.  We continue to attract and grow our advisor teams through selection of values-driven career changers and our prestigious college internship program. The Appleton Office has grown to 140 advisors with 60% of new advisor growth coming from our internship. Our preferred culture is transformational, relational, relevant, generous, and fun, attracting and retaining a diversity of top talent as the organization of choice for long term professional growth.

Our long-term, legacy-driven leadership focus creates generational stewardship of the agency system of Northwestern Mutual. We are living out our mission in the marketplace in alignment with our core values of courage, trust, commitment to excellence, integrity, and personal responsibility.  Our associates are leading in the community with time, talent, and treasure in philanthropic initiatives across our marketplace to align with our highest calling; to serve others.

This Network Office has been active since 1954.

District Network Offices:

Jacob Underwood

Managing Director

301 N Broadway Ste 201
De Pere, WI 54115-2557
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Michael Wulff Jr, CFP®

Managing Director

W189N11100 Kleinmann Dr
Germantown, WI 53022
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Corey R Fleisner, CLU®, ChFC®

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