Clark Manahan is an accomplished IT Applications Professional IV at ONEOK, specializing as a Measurement IT Specialist since September 2025. Prior to this role, Clark served as a Senior Business Analyst at Marathon Petroleum Corporation from September 2021 to September 2025, providing technical expertise as an IT Subject Matter Expert for Flowcal and working extensively with SQL and Oracle databases for data analytics and reporting. Previous experience includes positions as a Consulting Business Analyst at Sempera and roles at MarkWest Energy Partners, L.P., where Clark advanced from Measurement Data Supervisor to Senior Flowcal Specialist and Quorum Business Analyst. Clark also worked as a Consultant at Quorum Software from September 2006 to February 2008. An alumnus of Oklahoma State University, Clark holds a Bachelor of Science in Chemical Engineering obtained in 2006.
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