JPMorgan Chase & Co. on Tuesday named Jennifer Piepszak its new chief operating officer, but the company’s four major department heads remain more likely successors to Chief Executive Jamie Dimon to head up the largest U.

JPMorgan Chase on Tuesday promoted insider Jennifer Piepszak, seen as a strong contender to succeed CEO Jamie Dimon, as its chief operating officer in a sweeping executive reshuffle. Piepszak will succeed Daniel Pinto,

Doug Petno, JPMorgan’s co-head of global banking, will succeed Piepszak as co-CEO of JPMorgan’s commercial and investment bank, alongside Troy Rohrbaugh. The move appears to make Piepszak the front-runner to succeed Jamie Dimon as CEO and potentially become the first woman to lead the nation’s largest bank.