Ava Pfeiffer defends management clients in labor and employment law matters. 

Previously, Ava concentrated in financial services litigation and investigations as well as employment law at a large international law firm. She defended numerous leading broker-dealer firms against suitability, fiduciary duty, fraud, and state and federal securities laws and FINRA claims. Ava defended global banks against various state and federal claims, conducted internal investigations and advised clients on risks and mitigation, as well as advocated at mediations, arbitrations, and through written advocacy.

Prior to legal work, Ava worked for more than nine years as an analyst and risk manager at a global bank.

Affiliazioni professionali e istituzionali


Bar Association of Metropolitan St. Louis


American Bar Association


Woolsack Honor Society

St. Louis University School of Law


Recipient, Academic Excellence Awards for Top Grades

Legal Research and Writing, Constitutional Law, Civil Procedure, Torts, Business Associations, and Employment Law

St. Louis University School of Law


  • J.D., St. Louis University School of Law, 2020magna cum laude
  • B.A., Maryville University of St. Louis, 2005

Foro di appartenenza



  • U.S. District Court, Eastern District of Missouri
  • U.S. District Court, Western District of Missouri
  • U.S. District Court, Central District of Illinois
  • U.S. District Court, Southern District of Illinois