Office Profile

Here for you at every step, and every stage.

Meeting someone for the first time, and then having to talk about something as personal as your finances can be overwhelming. Our advisors simplify the conversation and help you understand what you need to know, so you can feel confident you're making the best financial decisions now and down the road.



  • A financial partner who understands your big picture, designs a plan tailored to your goals, and works with you to achieve each one
  • A judgment-free, pressure-free environment
  • Jargon-free conversations
  • Help seeing your financial blind spots and ways to account for them
  • Answers to the questions you have, and ones you never knew you had



About Gregory V Castronovo, CLU®, ChFC®
Managing Partner

Greg became a Northwestern Mutual Financial Representative in 1991 because he wanted to help people like you to have a positive impact on their lives.

Greg is passionate about growing Financial Representatives' Careers.  He is committed to maintaining a team of professionals that are here to help get our newest Financial Representatives off to a fast and successful career.  Greg is also dedicated to providing excellent service to our veteran Financial Representatives and their clients through our competent and caring staff.

Greg is married to Christy Castronovo, a proud father of a son and daughter, Jonah and Delaney, and currently resides in Bozeman.

Greg’s education, training, and professional achievements include:

  • Bachelors of Arts; College of St. Scholastica, Duluth, MN
  • Northwestern Mutual Career School
  • Certified Coach and Trainer
  • Northwestern Mutual Agency Growth Award 2003-2005, 2007-2010
  • MDRT Qualifying Member: 2000-2006
  • NQA - 1993, 2000-2007
  • NSAA - 1999-2000
  • GAMA International Management Award Gold 2006-2011
  • CLU® & ChFC® designations
  • Holds securities registrations



This Network Office has been active since 1891.

Greg V Castronovo, 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.

Learn More arrow

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?

Take The First Steplearn more arrow

#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

50 year anniversary banner

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