MEMPHIS, Tennessee — International Paper announced changes to its senior leadership team today including the retirement of a long-serving executive and organizational shifts. …Greg Wanta, senior vice president of the company’s North American Container business, will retire after transitioning responsibilities. …Tom Hamic has been named senior vice president, North American Container and chief commercial officer. …Jay Royalty has been named senior vice president, Containerboard and Recycling. He will also retain interim responsibility for the company’s EMEA Packaging business. …Clay Ellis has been named senior vice president, Global Cellulose Fibers. …The Board of Directors has elected two new executives to Sutton’s leadership team: Aimee Gregg has been elected senior vice president, Supply Chain and Information Technology. …Allison Magness has been elected senior vice president, Manufacturing and Environment, Health and Safety.