After 33 years of service, ConocoPhillips announced the retirement of Dominic Macklon, executive vice president of strategy, sustainability and technology, due to family medical reasons effective May 1, according to a Feb. 15 press release.

Macklon began his career with Conoco in 1991 and held engineering, business development, operational and leadership roles before becoming an executive leader for the company in 2018.

Since then, he led the company’s Lower 48 business and oversaw corporate planning and development, global technical functions, information technology, sustainable development and low carbon technologies, the release stated.

“Dominic has played an important role in identifying and driving value from low cost of supply opportunities across our global portfolio while positioning our company for the energy transition and accelerating our emissions reduction initiatives,” said Ryan Lance, chairman and CEO of ConocoPhillips. “I wish Dominic the best in retirement as he relocates back to the U.K.”