Hampton O’Neill

Hampton O’Neill is a Shareholder with Welborn Sullivan Meck & Tooley in Casper, Wyoming. He focuses on civil litigation and has practiced law in Wyoming for more than 30 years. His work centers on business, commercial, and insurance disputes, defense of personal injury actions, governmental liability, and civil rights claims. He also handles oil and gas litigation, complex commercial litigation, insurance coverage, appeals, mediation and arbitration, and trial matters for clients facing significant disputes.

Hampton earned a B.A. from St. John’s College, Santa Fe and a J.D. from the University of Wyoming Law School. After law school, he served as a law clerk to Chief Judge Clarence A. Brimmer of the US District Court for the District of Wyoming. He is admitted in Wyoming and Colorado, the US District Court for the District of Wyoming, and the US Court of Appeals for the Tenth Circuit.

Hampton has defended operators, drillers, and oilfield service providers in serious personal injury and wrongful death cases. His experience includes products liability, medical malpractice, industrial, oilfield, construction, and trucking accidents, premises liability, recreation-industry claims, insurance coverage, and bad faith. He has represented a liability insurer in a major Wyoming bad-faith appeal, defended a Canadian trucking company in multi-year litigation, and represented local government entities in civil rights cases.

Hampton O’Neill has been recognized for personal injury defense and energy-related legal work and holds an AV Preeminent peer-review rating from Martindale-Hubbell. He is a member of the Wyoming Bar Association, the Wyoming Civil Pattern Jury Instruction Committee, and the Defense Research Institute. His practice combines trial, appellate, and dispute-resolution experience with a long record of handling complex civil claims involving businesses, insurers, governmental entities, and natural-resources operations.

Law Office Affiliations

• Shareholder, Welborn Sullivan Meck & Tooley, P.C.
• Member, Colorado Bar Association
• Member, Wyoming State Bar
• Past President, Natrona County Bar Association (1998-1999)
• Member, Board of Trustees, Casper Family YMCA
• Past President, Natrona County Library Board
• Member, Defense Research Institute

Licensed State

• Colorado
• Wyoming

Education

• University of Wyoming Law School
  Juris Doctor (JD)
• St. John’s College, Santa Fe
  Bachelor of Arts (BA)

Awards & Badges