Greene Tweed, a global provider of advanced materials and high-performance engineered solutions, has named Thomas Castle as its new Chief Operating Officer. In this role, Mr Castle will oversee end-to-end operations, including manufacturing, supply chain, engineering, quality, procurement, and workplace safety across the company’s global footprint.
Mr Castle brings over 30 years of international operations experience, with deep expertise in managing complex manufacturing environments and scaling businesses through disciplined execution. Prior to joining Greene Tweed, he served as Chief Operating Officer at CMI Group, where he delivered strong organic revenue growth and strengthened quality outcomes for aerospace customers worldwide.
Earlier in his career, as Senior Vice President of Operations at TPI Composites, he led product diversification into new markets, commissioned four new manufacturing plants, and drove significant improvements in global safety performance. Welcoming the appointment, Greene Tweed President and CEO Magen Buterbaugh said that Mr Castle’s ability to lead large, multinational operations while maintaining a sharp focus on customers will support the company’s continued global expansion and operational consistency.
Mr Castle began his professional journey at GE Aviation and later joined Honeywell Aerospace, where he progressed into Vice President roles overseeing operations across the Americas. During his tenure at Honeywell, he delivered measurable gains in safety, quality, delivery reliability, and overall operational efficiency. As a member of Greene Tweed’s Executive Leadership Team, Mr Castle will play a key role in advancing the company’s long-term growth plans by strengthening operational alignment, expanding capacity, and ensuring scalable execution to meet rising global demand.
Greene Tweed is a global manufacturer of high-performance thermoplastics, composites, seals, and engineered components. With a legacy spanning over 160 years, the company serves mission-critical industries such as semiconductors, oil and gas, aerospace, defense, and chemical and pharmaceutical processing. Greene Tweed products are marketed and distributed worldwide.
