Sylvamo (SLVM) announced Jean-Michel Ribieras, chairman and chief executive officer, will retire December 31. John Sims, who currently serves as senior vice president and chief financial officer, has been elected chief operating officer by the company’s board of directors, effective May 1. As COO, Sims will lead commercial and operational functions, while Ribieras continues to lead corporate functions until his retirement. Sims will then become Sylvamo’s next CEO January 1. Don Devlin has been elected senior vice president and CFO to succeed Sims, effective May 1. Devlin joins Sylvamo from International (IP) Paper, where he held numerous leadership and finance positions, most recently serving as vice president, transformation and strategy deployment.