Hartung joins E&Y US oil, gas practice

John Hartung, EY

John Hartung has joined Ernst & Young LLP as a Houston-based oil and gas principal. He also will serve as Americas oil and gas leader for Parthenon-E&Y, part of E&Y’s global transaction advisory services practice.

He previously was with global consultancy Boston Consulting Group. Over the past 16 years, he has served in partner roles and been involved in the energy practices at both the Boston Consulting Group and McKinsey & Co.

Hartung’s primary expertise resides in the downstream segment of the oil and gas industry, but he has served clients on strategy and functional topics across the value chain including upstream, midstream, and commercial and trading operations. 

He began his career at Mobil and ExxonMobil Corp. where he spent 10 years in a number of strategy and management roles.

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