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Clive A. Seymour Of Counsel

T 918-594-0624 | F 918-594-0505 | cseymour@hallestill.com

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Clive Seymour is a Tax and ERISA attorney and has been practicing in these fields for more than 30 years. He has been recognized as a Best Lawyer in America  in Employee Benefits (ERISA) Law and served as an instructor in “Tax Accounting”  for the 1999 Tulsa University Graduate Tax Program.


  • University of Texas School of Law (J.D.)
  • University of Texas (B.A.)


  • Oklahoma, 2000
  • Texas, 1978
Community Involvement
  • Past president of the Thousand Oaks Homeowners Association
Legal Experience
  • 2000 - Present Hall Estill
  • 1986 - 1998 The Williams Companies
  • 1978-1986 Tenneco
Professional Involvement
  • Oklahoma Bar Association
  • Texas Bar Association
  • Tulsa County Bar Association
  • Past President of the Tulsa Tax Club
Teaching/Lecture Experience
  • Instructor in "Tax Accounting" 1999 Tulsa University Graduate Tax Program


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