40 Under Forty 2026: Cathy Zhang

Cathy Zhang, 34

Title: Circular economy innovation manager/group leader, Circular Economy Solutions, Saint-Gobain North America, in Northborough

Residence: Medford

Colleges: Massachusetts Institute of Technology; Harvard University

Cathy Zhang is helping manufacturers turn waste and sustainability challenges into practical business opportunities.

Since taking her current role in 2024, Zhang has helped build Saint-Gobain North America’s Circular Economy Innovation group and a portfolio focused on recycled and alternative materials, recycling technologies, and waste reduction. Her team now supports innovation across more than 10 product families.

Earlier, Zhang co-led development of a digital sustainability tool deployed to more than 300 Saint-Gobain employees globally, helping teams evaluate environmental and economic tradeoffs during product and manufacturing development.

Zhang has helped strengthen Saint-Gobain’s collaboration with Worcester Polytechnic Institute and the Central Massachusetts Climatetech Hub, connecting manufacturers with researchers, startups, and emerging technologies. She serves on the board of Women in Cleantech and Sustainability and mentors students, professionals, and startups.

What actor would play you if Hollywood made a movie about your life? Probably Ashley Park; my family and friends suggested Keiko Agena or Melissa Fumero.

What is the best restaurant in Central Mass.? C’est La Vie in Northborough. The room is cozy, and they have a delicious menu.

- Advertisement -

What song has the best life advice? “100 Years” by Five for Fighting

What one thing is most important to accomplish in the next 50 years? Help make environmental sustainability and resource efficiency the obvious choice in manufacturing.

– Digital Partners -