After serving as CEO of Macmillan Learning since April 2015, Ken Michaels has resigned. Michaels was named CEO in 2015 following his tenure as chief operating officer for Macmillan’s global education unit.

With his departure, Macmillan Learning general manager, Susan Winslow, will lead the company with the group’s senior leadership team. They will report to Macmillan CEO John Sargent.

Commenting on Michaels’ resignation, Sargent commended him for doing a good job in a difficult time for college publishers.

"Ken has done a great job leading Macmillan Learning, especially in this quickly evolving market. He is a driven leader, a constant learner, and an unrelenting supporter of education,” Sargent said in a statement. “He has modernized the company and put us on stable footing. He leaves with the company taking significant steps forward with a new courseware platform and a fantastic lineup for 2020.”

Michaels said it has been a privilege to head Macmillan Learning and is proud the company has made progress in keeping up with changes in the industry. "Although the industry is changing rapidly, we remain laser-focused on supporting the needs of educators and to creating innovative products using evidence-based research to increase student success," he said.

Michaels, a former chairman of BISG, joined Macmillan in 2013 from Hachette Book Group, where he was president and COO.