Hemlock, Mich. – Hemlock Semiconductor (HSC), the nation’s leading producer of hyper-pure polysilicon for the semiconductor and solar industries, today announced Fernando Signorini has joined its executive leadership team as Chief Operating Officer. In this role, Signorini will oversee HSC’s core operations—including manufacturing, supply chain, technology, procurement and quality—driving disciplined execution and agility across the organization. His leadership will be key to advancing HSC’s strategic priorities and delivering best-in-class manufacturing performance.

“We’re thrilled to welcome Fernando Signorini to Hemlock Semiconductor. His rare combination of operational excellence, global manufacturing experience, and unwavering commitment to customers will be a tremendous asset as we scale to meet growing demand for hyper-pure polysilicon. Fernando’s expertise will strengthen our operations and position HSC for long-term success in the semiconductor and solar industries,” said AB Ghosh, Corning Vice President and General Manager of Solar and Chairman and CEO of Hemlock Semiconductor. 

As COO, Signorini brings more than three decades of global experience in manufacturing and operations with Dow. Prior to serving in this role, Signorini was the Vice President for the Ethylene & Energy Envelope, with accountability for Packaging and Specialty Plastics and Olefins at Dow. He also served as Vice President of Operations, U.S. Gulf Coast Site Director, Texas Operations, and was responsible for 10 advanced manufacturing sites and the Houston Dow Center. Signorini began his career with Dow in 1994 as a co-op in Brazil.

He holds a Bachelor of Science degree in chemical engineering from the Maua School of Engineering, Sao Paulo, Brazil, and an MBA from the University of Houston.

Signorini also served as the executive sponsor of the Society of Women Engineers and an active ally of Women in Engineering, the Hispanic and Latin Network, and RISE employee resource groups.