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David Challman currently serves as a Senior Gas Marketer at Sempra U.S. Gas & Power, a position held since January 2015. Prior to this role, David Challman worked at the same company from February 2009 to January 2015 in various capacities, including Financial Analyst, Risk Analyst, and Auditor. David Challman earned a Bachelor of Arts in Economics from UC San Diego, completing this degree in 2009.