Brian Sonne, Esq.

Practice Areas
  • Family Law
  • Divorce
  • Child Custody
  • Child Support
  • Paternity
  • Modification
  • Adoption
  • Guardianship
  • Prenuptial & Postnuptial Agreements
  • Spousal Support
  • Estate Planning
Bar Admissions
  • Missouri


  • University of Missouri-Kansas City School of Law
    • Juris Doctor
  • Arizona State University
    • Bachelor’s Degree in Business and Economics

Brian Sonne, Esq.

Senior Associate Attorney

Family law matters such as divorce are difficult for anyone to face. When these issues arise, it is important to have someone on your side who will work to protect your rights and be there for you when you need it the most. Brian Sonne is a compassionate Senior Associate Attorney with Stange Law Firm, PC. Located in our Clayton, MO family law office location, he is ready and able to assist individuals throughout St. Louis County, MO and the surrounding areas.

Brian attended the University of Missouri-Kansas City School of Law where earned his Juris Doctorate in 2013. While in law school, Brian took part in various campus activities including serving as the Justice of Phi Alpha Delta (Benton Chapter), being a member of the UMKC Law American Bar Association Negotiations Team, and being a Founding Member/President of Law 2.0. Before obtaining his J.D., Brian studied at Arizona State University where he obtained his Bachelor’s Degree in Business and Economics. Brian is licensed and ready to assist clients in the State of Missouri.

Before joining the St. Louis, Missouri divorce lawyers at Stange Law Firm, PC, Brian spent the last four years working in solo practice in the Greater St. Louis, MO area where he gained valuable legal and litigation experience. He worked zealously on matters including expungements, business law, tax law, technology law, and contact law. Prior to his legal work, Brian spent a significant amount of time as a Telecommunications Consultant for Spearhead Networks where he was tasked with helping to implement IT and telecommunication solutions for various businesses.

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Protect Yourself By Understanding Your Options and Knowing Your Rights



Stange Law Firm, PC

120 S. Central Avenue, Suite 450

St. Louis (Clayton), Missouri 63105

Toll Free: 855-805-0595
Fax: 314-963-9191
Group 144


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