LANSDALE, PA, Jan 16, 2026 – Greene Tweed has named Thomas (T.J.) Castle chief operating officer. Castle brings more than three decades of leadership experience in manufacturing and industrial operations. As COO, he will oversee operational strategy across manufacturing, supply chain, quality, engineering, procurement, and safety.
Castle brings operations leadership from aerospace and advanced manufacturing environments. As COO at CMI Group, he delivered organic sales growth and improved quality performance for global aerospace customers. Earlier, as senior vice president of operations at TPI Composites, he led product diversification in composite manufacturing product diversification for emerging markets. In that role, he also launched four greenfield manufacturing facilities and drove improvements in safety performance across global operations.
“T.J. is a proven global operations leader with a deep understanding of how to scale organizations while maintaining operational discipline and customer focus,” said Magen Buterbaugh, president & CEO of Greene Tweed. “His experience leading complex, multinational operations will be instrumental as we continue to expand our global footprint, enhance operational excellence, and deliver consistent, high-quality solutions to our customers worldwide.”
Castle began his career at GE Aviation in operational leadership roles. He later joined Honeywell Aerospace, where he rose to vice president roles overseeing operations across the Americas. In those roles, he delivered gains in safety, quality, delivery performance, and operations.
Castle will join Greene Tweed’s executive leadership team as COO, with responsibility for global operations and supply chain. In this role, he will support long-term growth by improving operational consistency, expanding capacity, and scaling execution to meet global customer demand.
Source: Greene Tweed
About Greene Tweed
Greene Tweed designs and manufactures engineered materials, components, seals, and electrical connectors for industrial applications. The company serves customers in energy, aerospace, semiconductor, chemical processing, life sciences, defense, and related industrial markets. Its products include thermoplastics, elastomers, composites, sealing systems, structural components, and electrical connectors. These products are used in operating conditions involving high pressure, extreme temperatures, and chemically aggressive environments. Founded in 1863, Greene Tweed has developed from a distributor into a global manufacturer. The company supplies components for aircraft systems, energy infrastructure, semiconductor manufacturing equipment, and industrial processing operations. Customers include oil and gas producers, aerospace manufacturers, chip fabrication companies, and pharmaceutical processors. Greene Tweed reports approx. 3,000 customers worldwide across more than 100 countries. It employs about 1000 people globally. The company operates manufacturing and engineering facilities in North America, Europe, and Asia. Greene Tweed is headquartered in Lansdale, PA.