Zack's Bio

Zack Hennen is an Attorney in our Litigation Practice Group. Zack focuses on commercial and business litigation, and he represents individuals, entrepreneurs, and business entities in disputes arising in and around the areas of real estate, employment, construction, and shareholder rights. He also works on a range of appellate matters. Zack’s client-centered approach to practice pushes him to go the extra mile in pursuing the best possible resolution to every dispute.

Zack grew up helping his family run their small business. So, he understands the challenges businesses, owners, and entrepreneurs face every day. Zack learned from experience the value of getting the job done right and with integrity. He works diligently to produce high quality work that is strategically designed to put his clients in the best possible position to achieve their goals over the long run.

Prior to joining FMJ, Zack practiced environmental and real estate litigation at a central Minnesota law firm. This helped him gain valuable courtroom experience and an understanding of the dynamics and procedures of courtrooms across the state. At the University of Minnesota Law School, Zack was a Law Review editor and represented clients in court through his clinical work at the law school.

  • University of Minnesota Law School (J.D.)
    • Minnesota Law Review, Vol. 107 – Managing Editor
  • University of Colorado – Colorado Springs, summa cum laude (B.S.)

  • State of Minnesota
  • U.S. District Court (District of Minnesota)

  • Minnesota State Bar Association
  • Hennepin County Bar Association
  • Stearns Benton Bar Association

  • Courage Kenny Rehabilitation Institute, Adaptive Ski Instructor
  • Courage Kenny Rehabilitation Institute, Adaptive Biking Volunteer

“Thorough preparation, good judgement, and attention to detail often make all the difference in contentious litigation matters, so I give each case the focused dedication it demands. I am a precise writer, a deliberate speaker, and I know how to get the job done right.”

When he’s not in the office, Zack is most often taking a run around Eden Prairie or along one of its nearby trails. He spends the rest of his downtime skiing, rock climbing, or cheering on whatever Minnesota sports team happens to be in season.

News About Zack

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February 2026

How Can Landlords and Property Managers Protect Themselves from Liability During an Eviction Action in Minnesota?

This article highlights several common pitfalls that expose Minnesota landlords and property managers, both residential and commercial, to unnecessary liability during and after an... Read more

April 2025

Minnesota Statute Banning PFAS or “FOREVER CHEMICALS” Survives Constitutional Challenge in Federal Court

As it stands now, Phase I of Minnesota's PFAS removal law is in full effect. Read more

January 2025

FMJ Law Welcomes Litigation Attorney Zack Hennen

Welcome to the firm, Zack! Read more