Mary M. Spears

Senior Vice President and Chief Accounting Officer, Finance & Tax, ONEOK, Inc.

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

Since joining ONEOK in 2008, Spears has held positions of increasing responsibility, including her most recent role as vice president and chief accounting officer.

Before joining the company, she held leadership roles at Deloitte & Touche and Latham & Watkins. Spears is a certified public accountant and an FSA (Fundamentals of Sustainability Accounting) credential-holder. Active in the community, Spears serves on the executive committee of the Foundation for Tulsa Schools.

A native of Helena, Montana, Spears graduated magna cum laude from Oral Roberts University with a Bachelor of Science degree in accounting in 2001.