The supermajor has also accelerated investments in renewable energy and other clean energy solutions, including hydrogen. Before becoming CEO in 2014, van Beurden was head of downstream at Shell, which he had joined in 1983. According to Reuters' sources, Shell has shortlisted four potential candidates to succeed van Beurden. These include Wael Sawan, currently Integrated Gas, Renewables and Energy Solutions Director at Shell; Huibert Vigeveno, Shell's Downstream Director, Shell's chief financial officer Sinead Gorman; and Shell's Upstream Director Zoe Yujnovich. Sawan is the front-runner to succeed van Beurden, although Shell's board succession committee, which should pick the next CEO, hasn't made any decision yet, one of the sources told Reuters.