By Matt Grossman

Exxon Mobil Corp. has hired Kathryn Mikells as its next chief financial officer, succeeding 43-year company veteran Andrew Swiger as the company's top financial executive.

Ms. Mikells will take over as the energy giant's CFO Aug. 9, the company said. She previously served as CFO of Diageo PLC, a British beverage company, since 2015. Before that, Ms. Mikells did stints as the CFO of Xerox Holdings Corp., Automatic Data Processing Inc. and United Airlines Holdings Inc.

Mr. Swiger has worked at Exxon Mobil since 1978, when he started as an operations engineer in Morgan City, La. In the 1990s he became the general manager of a refinery and petrochemical plant in Singapore, before taking over as president and general manager of Mobil Oil Canada. He later served as production vice president for Africa, and production vice president for the Europe, Caspian and Russian region.

Mr. Swiger became the president of ExxonMobil Gas & Power Marketing in 2006. Seven years later, he was named principal financial officer.

Ms. Mikells will take over as CFO amid increased pressure on the company over how it confronts concerns about climate change. In recent months, activist hedge fund Engine No. 1 won Exxon board seats, despite owning a small fraction of the company's stock, after arguing the company should commit to carbon neutrality by 2050.

Write to Matt Grossman at matt.grossman@wsj.com

(END) Dow Jones Newswires

07-19-21 1008ET