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Chelsea Celsor Smith Of Counsel

T 405-553-2304 | F 405-553-2855 |

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Chelsea Celsor Smith has experience in civil litigation in both state and federal court. Her areas of emphasis include governmental ethics, constitutional law, administrative law and employment law.  In June 2022, she began serving as Director of Legal for Helsinn Therapeutics.

In addition, she has previously served as in-house General Counsel to the Oklahoma House of Representatives. She provides advice, training and has been a speaker regarding compliance with employment and ethics laws. Chelsea is experienced in employment and healthcare fraud issues and provides consulting services to a variety of pharma/biotech entities.

Chelsea has been recognized as a Best Lawyers: One to Watch in Labor and Employment Law-Employee; Labor and Employment Law; Litigation-Labor; and Employment Law. Further, she also owns and manages an oilfield disposal business with her family in Western Oklahoma. 


  • Oklahoma City University School of Law (J.D., cum laude, 2011)
    • Phi Delta Phi
  • University of Oklahoma (B.A. in Sociology/Criminology and History, with honors, 2008)


  • Oklahoma
  • U.S. District Court for the Western District of Oklahoma
  • U.S. Supreme Court 
Legal Experience
  • 2022 - Present - Director of Legal, Helsinn Therapeutics
  • 2019-Present Hall Estill 
  • 2019 Fellers Snider
  • 2015-2019 Celsor Smith Law
  • 2013-2015 Oklahoma House of Representatives, General Counsel
  • 2011-2013 Andrews Davis 
Professional Involvement
  • Member, Oklahoma Bar Association
  • Member, Oklahoma County Bar Association 
Community Involvement
  • Board Member Oklahoma City Chapter of the Federalist Society (2022-Present)
  • Board Member Oklahoma City Care Center (2022)
  • Red Tie Night to Benefit Oklahoma AIDS Care Fund, Preview Party Committee (2019)
  • Pink Tie Ball to Benefit Susan G. Komen​, Chair (20220 Co-Chair (2019; Acquisitions Chair (2018) 
  • Preservation Oklahoma (2016-2018)
  • Heritage Hills Associate Board, Social Chair (2017-2018)
  • Heritage Hills Twilight Co-Chair (2016)
  • Homeless Alliance Point in Time Count
  • St. Anthony Foundation Saintoberfest (2015)
  • United Way