Sandra (Sandi) Peterson is a globally recognized leader at the intersection of healthcare, technology, and operations. She is an Operating Partner at Clayton, Dubilier & Rice (CD&R), where she works across healthcare and consumer investments in North America and Europe. Sandi is also the Lead Independent Director on Microsoft’s Board, Chair of Volastra Therapeutics, Board member of Seaport Therapeutics, Chair of the American Academy in Berlin, a Trustee and Executive Committee member of the Institute for Advanced Study (Princeton, NJ).

Previously, Sandi was Group Worldwide Chairman at Johnson & Johnson, where she led the consumer and medical devices businesses and oversaw the company’s global supply chain, technology strategy, and operating infrastructure. Earlier roles include CEO of Bayer CropScience AG, CEO of Bayer Medical Care, and President of Bayer HealthCare’s Diabetes Care Division. She began her career at McKinsey & Company and has held senior leadership positions at Medco Health Solutions (Merck-Medco), Nabisco, and Whirlpool.

At Zephyr AI, Sandi brings deep experience scaling regulated healthcare businesses, building high-impact partnerships, and aligning technology strategy with operational excellence—helping guide Zephyr’s mission to apply AI and real-world data to accelerate development and expand access to effective therapies.

Sandi holds a B.A. in Government from Cornell University and an M.P.A. in Applied Economics from Princeton University.