Get in touch. Contact us or request a meeting.

I'd like to schedule a meeting.
Sending message...

Hellmuth & Johnson PLLC

8050 West 78th Street, Minneapolis, MN 55439
LOCAL 952-941-4005
FREE 888-343-3918
FAX 952-941-2337

Subscribe. Join our mailing list.

Community Association
Family Law
IT & eCommerce
Real Estate
High Resolution Attorney Photo

Jonathan F. Mack

Attorney at Law

  • Bio
  • Education
  • Publications


“There are three essential qualities for a lawyer that cannot be learned or feigned: intelligence, diligence, and the elusive trait sometimes called ‘the judgment thing.’ I became a lawyer because I was told that I possessed all three, and I have not learned or feigned them since.”

Jonathan is a partner with Hellmuth & Johnson. His practice covers a variety of complex litigation matters, particularly in the areas of securities, commercial transactions, business torts, insurance coverage, consumer, employment, and antitrust. Jon's practice areas involve multiple parties and forums, giving him frequent exposure to difficult procedural, jurisdictional, and case management issues. 

He has provided representation in over 25 class actions, evenly divided between plaintiff and defense sides. In the insurance area, these cases have allowed John to develop deep knowledge and expertise in directors and officers and property coverage issues.

In addition to complex business litigation, Jon has also handled the defense of numerous civil sexual abuse cases against institutions.


Jon earned his J.D. from Vanderbilt University Law School where he was Associate Editor of the Vanderbilt Journal of Transnational Law and on the Moot Court Board. He completed his undergraduate studies at Hamilton College, where he earned his A.B., cum laude, in Government and Economics.


  • State Court Venues and Scienter-Free Causes of Action as Battlegrounds in Non-Class Securities Fraud Actions in the Post-PSLRA/SLUSA Enviroment, Minn. CLE Presentation, Nov. 2008
  • PSLRA and SLUSA: Laws with Unintended Consequences, 7 Wall Street Lawyer, Vol. 6 (2003)
  • Class Certification of Common Law Claims in Securities Fraud Actions, New York Law Journal, (Nov. 6, 1992, p.1)
  • Bar Admissions: Minnesota; Oregon (inactive); D. Minn.; 8th Cir.; S.D.N.Y; E.D.N.Y; D. Colo.