Business Description

Overview TriMas designs, develops and manufactures a diverse portfolio of products primarily for the consumer products, aerospace and defense, and industrial markets through its TriMas Packaging, TriMas Aerospace and Specialty Products groups. We believe our businesses share important attributes, including: innovative produc t technologies and features; customer-approved processes and qualified products; demonstrated operating discipline; strong cash generation; long-term growth opportunities; and a commitment to sustainability. Headquartered in Bloomfield Hills, Michigan, TriMas, including our Aerospace operations, has approximately 3,700 employees who serve our customers from 37 manufacturing and support locations in 13 countries. On November 4, 2025, we entered into an Equity Purchase Agreement (the “Purchase Agreement”) with Takeoff Buyer, Inc. (the “Purchaser”), an affiliate of Tinicum L.P. and funds managed by Blackstone, Inc., to sell TriMas Aerospace. The purchase price for the sale of TriMas Aerospace consists of approximately $1.45 billion in cash, subject to customary adjustments. The sale of TriMas Aerospace is expected to close in the first quarter of 2026, subject to the satisfaction or waiver of customary and other closing conditions. As a result, the financial results of our Aerospace segment are presented as a discontinued operation and the assets and liabilities have been retrospectively reclassified to assets and liabilities held for sale for all periods presented in the financial statements included in this Annual Report of Form 10-K During 2025, our net sales from continuing operations were $645.7 million, operating profit from continuing operations was $41.3 million, and net cash provided by operating activities was $117.5 million. Approximately 66% of our 2025 net sales from continuing operations were generated from sales in North America. Our Competitive Strengths Our management team believes TriMas benefits from a number of competitive strengths, including: • Innovative Manufacturing and Product Technologies. We believe our businesses are well-positioned through years of refined manufacturing know-how, innovative product development, application engineering and solutions design. We continue to prioritize investments that enhance and protect our product designs and manufacturing competencies. Our proprietary manufacturing processes, advanced automation and specialized technical capabilities are often difficult and costly to replicate, providing a competitive advantage. TriMas Packaging delivers a consistent pipeline of new and enhanced solutions that improve functionality, aesthetics and sustainability. Our recent product innovations include fully recyclable Singolo™ polymeric pumps made from a single material; an expanded line of all‑plastic foamers and small‑dosage treatment pumps; and tethered caps designed to improve recyclability. Additional offerings include certified flame‑mitigation closures and patent‑pending child‑resistant closures engineered with less plastic to reduce environmental impact without compromising performance. We also continue to support customers in medical and wellness markets with high‑precision, technically advanced components used in testing, diagnostics and treatment applications. TriMas Packaging’s emphasis on engineering excellence and intellectual property protection has resulted in a growing global patent portfolio, with 27 patents filed and 18 issued in 2025. • Long-Term Customer Relationships and Customer-Focused Solutions. We believe that TriMas has long‑standing relationships with many of the world’s leading consumer, industrial and life sciences companies, supported by product lines and businesses that customers have relied on for decades. Rieke ® , part of our Packaging group, for example, has operated for more than a century, while Norris Cylinder™, with over 70 years of experience, is a large manufacturer of high‑ and low‑pressure cylinders. Across key product categories, we serve as an integral supplier, providing the technical expertise, reliability and innovation our customers depend on for product launches and ongoing programs. We collaborate closely with customers throughout the design, development and production life cycle to deliver solutions that meet evolving technical, marketing and sustainability requirements.…