Halliburton informed that Mark McCollum, will resume his role as executive vice president and chief financial officer effective immediately.

McCollum will continue reporting to Dave Lesar, Chairman and Chief Executive Officer of Halliburton, and will remain a member of the company’s Executive Committee.

“Mark is a proven leader with an impeccable track record for managing the financial direction of our company,” said Dave Lesar, chairman and chief executive officer. “We are pleased to have him resume his responsibilities as CFO and help drive Halliburton’s continued business success and increase shareholder value.”

Christian Garcia, who had assumed McCollum’s CFO responsibilities on an interim basis, will remain with the company as Senior Vice President of Finance until August 1, 2016, at which time he intends to take early retirement.

“We would like to thank Christian for his outstanding work as interim CFO during the last 18 months and wish him well in the future,” Lesar added.