
Litigation: Mediators
USA Guide 2026 : Oklahoma
Rankings

Ranked Individuals
Ranked Individuals
About
Provided by Hartzog Conger Cason LLP
Hartzog Conger Cason provides elite litigation counsel for clients facing complex disputes and high-stakes claims. Its litigators are known for disciplined judgment, formidable preparation and a results-oriented style of advocacy. Representing clients in state and federal courts at both the trial and appellate levels, the Litigation team offers arbitration and other dispute resolution forums.
The practice handles sophisticated commercial, civil and business litigation, including commercial disputes, insurance claims, employment matters, oil and gas litigation, shareholder derivative claims, tax controversies, trust and probate disputes, trade secret disputes, antitrust and securities litigation, agency proceedings, selected tort litigation and high-end family disputes.
The Litigation practice represents businesses and business owners, high-net-worth individuals and families, public and private companies, corporate officers and directors, employers, insurers, accounting firms, hospitals, health care professionals, energy companies, fiduciaries and creditors.
Clients turn to Hartzog Conger Cason when a dispute demands more than technical skill alone. The firm brings decades of trial experience, strategic clarity and exceptional responsiveness. That experience matters when business continuity, ownership interests, professional reputation or long-term financial consequences may be at stake.
Chambers Review
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Strengths
Provided by Chambers
Hartzog Conger Cason is detail-oriented and tenacious in solving problems.
Litigation: Mediators respondentUSAThe firm has outstanding talent, local knowledge, connections and experience in Oklahoma.
Litigation: Mediators respondentUSAThe attorneys at Hartzog Conger Cason are kind, thoughtful, thorough and prompt.
Litigation: Mediators respondentUSA
Notable Practitioners
Provided by Chambers
Band 1 
Band 1 
Charles E Geister III
Charles Geister is held in high regard for his wide-ranging civil litigation practice, which includes notable strength in appellate work as well as ADR proceedings. Charles Geister is one of my favorites in the community; he's an excellent mediator.
Litigation: Mediators respondentUSACharles is an excellent mediator.
Litigation: Mediators respondentUSA
Band 3 
Band 3 
David Elder
David Elder is recognized for his breadth and depth of litigation expertise, with experience acting for a range of clients in intellectual property, antitrust and bankruptcy-related disputes, among others.
Ranked Individuals at Hartzog Conger Cason LLP (3)
Members
Provided by Hartzog Conger Cason LLP

Charles E Geister III
View profile of Charles E Geister III
David Elder
View profile of David Elder
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