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Tanner is known for his clear and concise legal communication.

Tanner focuses his practice on complex commercial litigation, particularly consumer class actions and multidistrict litigation. Recognized by his colleagues as a gifted writer, Tanner frequently takes the lead in drafting critical pretrial briefs, including dispositive motions and evidentiary challenges. Tanner’s prior experience as a federal law clerk provides him unique insight into the nuts and bolts of litigation, making him a valuable asset to clients attempting to navigate the federal court system.

In addition to his commercial litigation practice, Tanner regularly assists on white collar defense matters, especially in the False Claims Act context. Tanner has significant experience defending companies from qui tam whistleblower suits at every stage of the litigation process, combining his deep substantive knowledge of the law with creative defense strategies.




  • J.D., Washington University in St. Louis School of Law
    • cum laude
    • Washington University Jurisprudence Review, Chief Articles Editor
  • B.A., Lindenwood University
    • Philosophy
    • cum laude


  • Missouri
  • U.S. District Court, Eastern District of Missouri

Professional Memberships and Certifications

  • The Missouri Bar


The Hon. Sarah E. Pitlyk, U.S. District Court, Eastern District of Missouri 

2023 Pro Bono Contributor

While I still prefer being in the office, the firm has made it easier to balance working in the office and from home, adding flexibility that makes the firm even more dynamic and effective.

  • Served on team representing leading pharmacy benefit manager in multidistrict litigation (MDL) in Florida federal court, obtaining both a dismissal with prejudice and an important decision defending the use of mail-order pharmacies to deliver medications.
  • Drafted a motion for summary judgment in a TCPA class action which resulted in a complete dismissal with prejudice.
  • Helped achieve exclusion of damages and liability experts, denial of class certification, and award of summary judgment in multidistrict consumer fraud class action.
  • Successfully moved to compel individual arbitration of consumer claims in a variety of forums, including obtaining favorable state appellate rulings on an issue of first impression regarding the enforceability of online arbitration provisions.
  • Briefed appeal of $500,000 jury verdict in breach of contract dispute, resulting in complete reversal of trial court's judgment.
Outside the Office

Tanner and his wife are foodies, and they explore a new restaurant every weekend. He also enjoys reading philosophy, online chess and playing guitar.

Community Leadership

Tanner Lifts for a Purpose.

Since 2012, Tanner has collaborated with Steve’s Club, a member-based 501(c)(3) providing a national network of programs serving at-risk or underserved youth. The clubs promote health, fitness, nutrition and personal development. Tanner has organized annual weightlifting fundraising competitions and led team-building and leadership activities for teens.