Dan Sullivan
President/Chief Executive Officer
- Juris Doctorate, University of Tulsa College of Law
- Bachelor of Science in Business Administration, Northeastern State University
- Oklahoma State Representative (District 71), 2004 – 2011
- Of Counsel, Pierce Couch, Hendrickson, Baysinger & Green LLP, 2005 – 2011
- Joined GRDA in 2011
Tim Brown
Chief Operating Officer
- Bachelor of Science in Mechanical Engineering, University of Maine
- Registered Professional Engineer
- Background in Power Supply Planning, Power Marketing, T&D Operations, Corporate Planning and Regulatory Affairs
- Joined GRDA in 2011
Brian Edwards
Executive Vice President/Chief of Law Enforcement & Lake Operations
- 38-plus years in law enforcement
- Bachelor Degree in Criminal Justice/Corrections, Langston University 1995
- Master of Business Administration, Oklahoma City University, 2003
- Served eight years as Tulsa County Under-Sheriff
- Graduate of 219th Section of Federal Bureau of Investigation National Academy
- Joined GRDA in 2012
Heath Lofton
General Counsel
- Juris Doctorate, University of Oklahoma
- Bachelor of Science in Accounting, Oklahoma State University
- Joined GRDA in 2011
Nathan Reese
Executive Vice President/External Relations
- Juris Doctorate, Washington University
- Bachelor of Arts in Political Science, University of Tulsa
- Joined GRDA in 2013
Carolyn Vowell Dougherty
Interim Executive Vice President/Chief Financial Officer
- 34-plus years in finance, utility accounting
- Certified Public Accountant
- Bachelor’s degree in accounting, Oklahoma State University
- Previous GRDA experience, 1986-2017 (returned as interim in May 2023)
Laura D. Hunter
Executive Vice President/Chief Administrative Officer
- Master of Human Relations, University of Oklahoma
- 20+ years progressive experience in strategic planning, human resources, information technology and properties.
- Joined GRDA in 2019
John Wiscaver
Executive Vice President/Strategic Communications
- Bachelor of Science, Communications and Marketing, Eastern Illinois University
- 25+ years experience in public relations/media/marketing/crisis management
- Joined GRDA in 2017