Stephen P. MacMillan
Photo: World Economic Forum, CC BY 3.0, via Wikimedia Commons29

Stephen P. MacMillan

American business executive born 1964

Stephen P. MacMillan (born 1964) is an American business executive who is the former chairman, president and chief executive officer of Hologic, a medical device and diagnostic manufacturing company headquartered in Marlborough, Massachusetts. He is the former CEO of Stryker Corporation, another medical device manufacturer headquartered in Kalamazoo, Michigan.2

From Wikipedia’s article on Stephen P. MacMillan (this version), CC BY-SA 4.0.

Companies

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

As of each latest filing. The line shows shares held over time.

Recent filings

  • Apr 7, 2026Returned to company 1,146,829 shares of Hologic17
  • Apr 7, 2026Returned to company 1,423,837 shares of Hologic17
  • Nov 14, 2025Shares withheld for tax 6,874 shares at $74.15 of Hologic18
  • Nov 11, 2025Shares withheld for tax 6,679 shares at $74.60 of Hologic19
  • Nov 10, 2025Granted 169,582 shares of Hologic19
  • Nov 7, 2025Shares withheld for tax 50,405 shares at $74.10 of Hologic19
  • Nov 4, 2025Granted 83,589 shares of Hologic20
  • Sep 22, 2025Sold 38,700 shares at $67.32 of Hologic21
  • Sep 22, 2025Sold 77,418 shares at $67.04 of Hologic21
  • Sep 22, 2025Sold 22,240 shares at $66.13 of Hologic21
  • Sep 22, 2025Exercised options 138,358 shares at $39.96 of Hologic21
  • Nov 14, 2024Shares withheld for tax 6,860 shares at $77.54 of Hologic22
  • Nov 11, 2024Granted 39,677 shares of Hologic23
  • Nov 8, 2024Shares withheld for tax 68,447 shares at $78.76 of Hologic23
  • Nov 7, 2024Shares withheld for tax 6,214 shares at $79.29 of Hologic23
  • Nov 5, 2024Granted 118,560 shares of Hologic24
  • Jul 30, 2024Sold 20,228 shares at $82.32 of Hologic25
  • Jul 30, 2024Sold 16,177 shares at $81.44 of Hologic25
  • Jul 30, 2024Sold 7,634 shares at $80.60 of Hologic25
  • Jul 30, 2024Exercised options 44,039 shares at $26.21 of Hologic25
  • Jul 17, 2024Sold 3,672 shares at $80.13 of Hologic26
  • Jul 17, 2024Exercised options 3,672 shares at $26.21 of Hologic26
  • May 23, 2024Gift 57,875 shares of Hologic27
  • May 16, 2024Granted 2,622 shares of Illumina16
  • Apr 22, 2024Gift 12,000 shares of Hologic28

Early life and education

  • Date not recordedDavidson College3
  • Date not recordedHarvard Business School3
  • Date not recordedHarvard University3

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.

From Wikipedia’s article on Stephen P. MacMillan (this version), CC BY-SA 4.0.

Career

Occupation: business executive.5

MacMillan started his career with Procter and Gamble in 1985. He went on to serve 11 years at Johnson & Johnson in various senior roles in the U.S. and in Europe. After that he was a Senior Executive with Pharmacia Corporation.

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

In December 2013, following a settlement with activist shareholder Carl Icahn, medical technology company Hologic named MacMillan their 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, including Hologic becoming the title sponsor of association.

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.

From Wikipedia’s article on Stephen P. MacMillan (this version), CC BY-SA 4.0.

Personal life

  • BornNew Jersey6

Sources

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