Mary Spears


Mary Spears is vice president and chief accounting officer of ONEOK. She is responsible for ONEOK’s accounting operations and financial reporting functions, from segment accounting through corporate consolidation and reporting.

Since joining ONEOK as a senior accountant, natural gas liquids, in 2008, Spears has held positions of increasing responsibility, including her most recent role as director, SEC reporting and corporate accounting.

Before joining the company, she worked at Deloitte & Touche and Latham & Watkins. Spears is a certified public accountant and a member of the American Institute of Certified Public Accountants, the Oklahoma Society of CPAs, and the Accounting & Financial Women’s Alliance. Active in the community, Spears serves as treasurer of the Council Oak Elementary Executive Board.

A native of Helena, Montana, Spears earned a Bachelor of Science degree in accounting in 2001 from Oral Roberts University in Tulsa, Oklahoma.