PwC has appointed former audit leader Timothy Ryan as its new US chairman for a four-year term.

Ryan succeeds Bob Moritz, another former audit leader who was recently appointed global chairman of PwC after two terms as US chairman. Ryan has served since 2013 as vice chairman and leader of US markets, strategy, and stakeholders, where he was responsible for the firm’s strategy function and stakeholder relationships. That includes investor relations, regulatory affairs, public policy, corporate responsibility, and human capital.

Before serving in that capacity, Ryan led PwC’s US assurance practice, overseeing all strategy and implementation of solutions intended to make financial information more reliable. He also led the firm’s financial services practice and consumer finance group.

Ryan and Moritz both assume their new roles in July. Ryan will also serve as a member of the governing board of the Center for Audit Quality. “Tim will bring an unwavering commitment to audit quality and a wealth of diverse experiences to the chairman role,” said Cindy Fornelli, executive director of the CAQ, in a statement.