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Vice Chairman and CEO of SK On
Yu Jeong-joon
North America Expert Takes Helm to Lead Global Expansion and Profit Turnaround
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Last Updated on Aug 1, 2025
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Vice Chairman and CEO of SK On
Life Summary
Yu Jeong-joon is Vice Chairman and Co-CEO of SK On, serving alongside CEO Lee Seok-hee.
He also concurrently serves as CEO of SK Americas.
He is striving to successfully complete large-scale facility investments and lead a turnaround into profitability through global business expansion.
He was born on December 20, 1962, in Seoul.
He graduated from Kyunggi High School in Seoul and earned a degree in Business Administration from Korea University. He later obtained a Master’s degree in Accounting from the University of Illinois Graduate School in the United States.
He began his career as an accountant at the New York office of Deloitte & Touche.
After working at McKinsey and LG Construction, he joined the SK Group.
Within SK, he has held various executive roles, including President of the R&C (Resource & Chemicals) division at SK Energy, CEO of SK Lubricants, President of the R&M (Refining & Marketing) division at SK Energy, Head of the G&G (Global & Growth) Task Force, CEO of SK E&S, and Chair of both the Global Growth Committee and the Energy & Chemicals Committee within the SK SUPEX Council.
During the management rights dispute with hedge fund Sovereign, he played a key role as Chief Financial Officer in defending the SK Group owner's family’s control over the company.
He has worked closely for many years with Chey Jae-won, Executive Vice Chairman of SK Innovation and younger brother of SK Group Chairman Chey Tae-won.
He is known for his calm demeanor and rational decision-making.
He enjoys reading and has a deep interest in the humanities.
#YuJeongjoon #SKOn #SKGroup #CheyTaeWon #CheyJaeWon #energyindustry #accounting #SKAmericas #leadership #globalstrategy
He also concurrently serves as CEO of SK Americas.
He is striving to successfully complete large-scale facility investments and lead a turnaround into profitability through global business expansion.
He was born on December 20, 1962, in Seoul.
He graduated from Kyunggi High School in Seoul and earned a degree in Business Administration from Korea University. He later obtained a Master’s degree in Accounting from the University of Illinois Graduate School in the United States.
He began his career as an accountant at the New York office of Deloitte & Touche.
After working at McKinsey and LG Construction, he joined the SK Group.
Within SK, he has held various executive roles, including President of the R&C (Resource & Chemicals) division at SK Energy, CEO of SK Lubricants, President of the R&M (Refining & Marketing) division at SK Energy, Head of the G&G (Global & Growth) Task Force, CEO of SK E&S, and Chair of both the Global Growth Committee and the Energy & Chemicals Committee within the SK SUPEX Council.
During the management rights dispute with hedge fund Sovereign, he played a key role as Chief Financial Officer in defending the SK Group owner's family’s control over the company.
He has worked closely for many years with Chey Jae-won, Executive Vice Chairman of SK Innovation and younger brother of SK Group Chairman Chey Tae-won.
He is known for his calm demeanor and rational decision-making.
He enjoys reading and has a deep interest in the humanities.
#YuJeongjoon #SKOn #SKGroup #CheyTaeWon #CheyJaeWon #energyindustry #accounting #SKAmericas #leadership #globalstrategy