Shell Plc has made a number of changes to its executive committee, the company said Jan. 23.

As part of Shell’s changes, Huibert Vigeveno, director of downstream, renewables and energy solutions, will step down after 30 years of service, effective March 31.

Vigeveno, who was also an executive committee member, contributed to Shell’s “customer value proposition across a range of businesses and geographies, successfully leading the BG integration,” CEO Wael Sawan said in a press release.

Additionally, Andrew Simith, currently executive vice president of trading and supply, and Machteld de Haan, currently executive vice president of chemicals and products, have been added to the executive committee, effective April 1.

Smith was also promoted to the director of trading and supply, and Haan will be named director of downstream, renewables and energy solutions, Shell said.

Smith joined Shell in 1986 as a refinery engineer and has worked across all of Shell’s integrated value chains, including leading Shell’s petrochemical manufacturing business in Singapore.

Haan has been with Shell since 1998 and has served several roles globally across Shell’s downstream portfolio including mobility, strategy, fleet solutions and lubricants, the company said.