Management Team

Dan Sullivan
President/Chief Executive Officer

Dan Sullivan

Dan Sullivan

  • Juris Doctorate, University of Tulsa College of Law
  • Bachelor’s 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

Tim Brown

  • Bachelor’s of Science in Mechanical Engineering, University of Maine
  • Registered Professional Engineer
  • Background in T&D Operations, Rates, Power Supply and Financial Planning
  • Joined GRDA in 2011

Heath Lofton
General Counsel

Heath Lofton

  • Juris Doctorate, University of Oklahoma
  • Bachelor’s of Science in Accounting, Oklahoma State University
  • Joined GRDA in 2011

Robert Braun
Executive Vice President of Human Resources

Robert Braun

  • Bachelor’s Degree in Organizational Development and Human Resources, Friends University
  • 20-plus years of experience in human resources/employee development

Brian Edwards
Executive Vice President/Chief of Law Enforcement

Brian Edwards

  • 30-plus years in law enforcement
  • Bachelor’s in Criminal Justice/Corrections, Langston University 1995
  • MBA, 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

Ellen Edwards
Executive Vice President of Compliance

Ellen Edwards

  •  Juris Doctorate, University of Oklahoma College Of Law
  •  Bachelor’s of Science in Political Science, Colorado College
  •  Former member of the Oklahoma Workers Compensation Advisory Council
  •  Former Oklahoma Workers Compensation Court Judge (1996-2008)
  • Joined GRDA in 2011

Nathan Reese
Executive Vice President for External Relations

Nathan Reese

  •  Bachelor of Arts, Political Science, University of Tulsa
  • Juris Doctorate, Washington University (St. Louis)
  • Joined GRDA in 2014

Steve Wall
Chief Information Officer

Steve Wall

Steve Wall

  • Bachelor’s in Business Administration in Management Information Systems, University of Oklahoma
  • 25-plus years in Information Technology, 15 years working in the Federal Energy Sector, 10 as CIO of a Department of Energy agency
  • Additional responsibilities include, managing 24/7 SCADA, Communications and Physical Security Teams, specializing in NERC CIP Compliance, Cyber Security, Records Management, and Privacy
  • Joined GRDA in 2018

John Wiscaver
Executive Vice President of Corporate & Strategic Communications

Robert Ladd

John Wiscaver

  • Bachelor’s of Science, Communications and Marketing, Eastern Illinois University
  • 25+ years experience in public relations/media/marketing/crisis management
  • Joined GRDA in 2016

Lorie Gudde
Chief Financial Officer

Lorie Gudde

Lorie Gudde

  • Bachelor in Business Administration: Accounting and Business Management, Pittsburg State University
  • Previous experience with Deloitte Audit In-Charge, emphasis in Energy & Utility sector clients
  • Joined GRDA in 2007