Exxon Mobil Corp.’s Karen T. McKee, vice president of Exxon and president of its product solutions company, will retire after 34 years effective May 1.

Matt Crocker, Exxon’s president of global business solutions, will succeed McKee, the company said in an April 2 press release.

“We thank Karen for her long-standing service to the company,” said Darren Woods, CEO and chairman of Exxon Mobil. “In her more than three decades with the company, she’s made significant contributions to ExxonMobil in a wide range of roles across our Downstream and Chemical businesses. The Management Committee and I sincerely wish her and her husband, Mark, all the best in retirement.”

Crocker joined the company in 1995 at the Fawley refinery in the U.K. Prior to his current role, he held a number of senior vice president and vice president positions across Exxon Mobil’s low carbon solutions, product solutions and upstream businesses.

Crocker also held several positions in refining and chemicals across operations including at the Baytown, Baton Rouge and Fawley refineries, Exxon said.