Overview
We challenge ourselves to move to a new stage by bringing the experience and strengths to sustain our present and future. The automotive industry is in the midst of a once-in-a-century transformation Shrinking engineparts market Structural change inthe automotive andparts industry MajorEnvironmentalChanges Expansion into newindustrial areas ExpandingGrowthOpportunities Increase demand fornew functionalcomponents ‘Innovation’ and ‘Challenge’, and to the New Stage Generate synergies through consolidation Reform business portfolio Strengthen sustainability management April 2026 ― Full Integration Building on a rich history to reach even greater heights NPR-RIKEN becomes an operating holding company Whereas previously Riken Corporation and Nippon Piston Ring Co., Ltd. (NPR) were subsidiaries of NPR-RIKEN, in April 2026, corporate split procedures were implemented to transfer their sales, development, and corporate divisions to NPR-RIKEN. As a result, NPR-RIKEN became an “operating holding company.”Since the business merger in October 2023, we have been advancing substantive integration through establishing divisions for overseeing the subsidiaries and subcommittee for integration. However, with this transfer of operations, full-scale integration are now implemented at the business line level as well. NPR-RIKEN handles direct sales to automotive and marine engine manufacturers, as well as other customers, who were previously served separately by Riken and NPR. Intellectual property and related assets are managed by NPR-RIKEN, and R&D activities are centralized at NPR-RIKEN. Through this approach, we will build a more robust development framework. The Corporate Divisions, which paying a leading rols as the second line of management governance are integrated into NPR-RIKEN. In this way, we aim to establish an effective and efficient governance structure that spans the entire group. Six business units to drive operations Business units are placed under NPR-RIKEN, and their respective operations, including those of manufacturing subsidiaries and other affiliated companies, will be led by the business unit directors. What does that mean exactly? ・We organized our business divisions into groups based on compatibility in terms of customers, product characteristics, and manufacturing methods and will operate strategically and efficiently without regard to the boundaries of the former organizational structure. ・We delegate day-to-day decision-making to the business units and strive for agile management. ・We will conduct our business operations with a focus on asset efficiency, including ROIC. For more details, please see Manufacturing divisions spun off as subsidiaries The manufacturing divisions were spun off as subsidiaries and placed under the jurisdiction of the business units. ・Riken and NPR has changed their company names and was reborn as manufacturing subsidiaries of NPR-RIKEN, working to improve productivity and quality under the leadership of the business units.Although the names “Riken Corporation” and “Nippon Piston Ring Co., Ltd.” will no longer exist, we will carry forward over a century of customer trust, experience, and expertise into the next era and aim for further growth on a new stage. ・We will further advance our efforts to strengthen our global optimal production structure, including our overseas subsidiaries. Head office functions centralized in Tokyo We revised our current structure, in which we maintain head offices in both Tokyo and Saitama City, and transition to a single-head office structure, based in Tokyo.In FY2027, we plan to consolidate all headquarters functional departments and relocate the entire headquarters to the Tokyo Sankei Building in Otemachi, Chiyoda-ku, Tokyo. What kind of benefits will this provide? From April 2026, we shifted from our current dual-head office structure, with offices in both Tokyo and Saitama City, to a structure where corporate and international operations are centralized in Tokyo. This move will enable faster decision-making and stronger communication, thereby supporting proactive expansion of our business. In FY2027, we plan to relocate the domestic sales and administrative divisions remaining in Saitama City to the Tokyo Sankei Building in Otemachi, Chiyoda-ku, Tokyo.Led by a project team, we are exploring ways to create a comfortable office that fosters creative ideas and delights our customers while taking our employees’ opinions into account. New headquarters address from FY2027Tokyo Sankei Building1-7-2 Otemachi, Chiyoda, Tokyo About NPR-RIKEN’s Six Business Units Building on the technologies, expertise, and customer bases that Riken and NPR have cultivated over many years, the companies have reorganized their operations and established a new structure consisting of six business units.By combining the history and strengths both companies have established over their respective histories, we will further enhance our business expertise while delegating decision-making authority and responsibility to each business unit, enabling agile and responsive operations! Semiconductor & Electronics Related Business Unit We handle thermal engineering business, such as heater units required for semiconductor manufacturing, as well as EMC business, such as electromagnetic anechoic chambers, which are essential for improving the performance of IT and electronics products. Piston Ring Business Unit With one of the world’s largest market shares, NPR-RIKEN continues to strive for the ultimate piston ring! Piping ComponentsBusiness Unit Pipes are everywhere in our daily lives!Piping supports our essential infrastructure, including water, gas, and air conditioning Marine & IndustrialComponents Business Unit We also manufacture piston rings as large as an adult’s outstretched arms!Compatible with a wide range of fuels, our piston rings contribute to achieving carbon neutrality. Casting ComponentsBusiness Unit We manufacture casting components mainly for c