Stephen P. MacMillan

Stephen P. MacMillan is the chairman, president and chief executive officer of Hologic, a medical device and diagnostic manufacturer headquartered in Marlborough, Massachusetts. He is the former CEO of Stryker Corporation, a medical device manufacturer headquartered in Kalamazoo, Michigan.

Education
MacMillan received a B.A degree in Economics from Davidson College, where he was co-captain of the golf team. He is also a graduate of Harvard Business School's Advanced Management Program. MacMillan serves on the Davidson College Board of Trustees.

Career
MacMillan joined Stryker Corporation in 2003 as president and chief executive officer, and was promoted to chief executive officer in 2005. He resigned from the position in February 2012 citing "family reasons". In November 2012, he joined sBiomed, a Utah-based company, as the chief executive officer.

In December 2013, following a settlement with activist shareholder Carl Icahn, medical technology company Hologic named MacMillan the president and chief executive officer. In the aftermath of the forced disappearance of Chinese women's tennis player Peng Shuai, Macmillan expressed support for the Women’s Tennis Association (WTA) as the organization cancelled its events in China. He negotiated a multiyear sponsorship deal with WTA and Hologic became the title sponsor of WTA.

In June 2023, MacMillan was elected to the Board of Directors of Illumina, Inc. after being nominated by Icahn, and was appointed non-executive Chairman of the board.