John joined Celgard in 2008 as managing director of Celgard Korea and transferred to Celgard U.S. to lead the product and process quality innovation team. John managed global Celgard operations as vice president by bringing his extensive knowledge of Kaizen philosophy and best practices in chemical, thermoplastic and separator manufacturing industries. John also holds multiple international IPs including one for an Optical Camber Measurement (OCM) system that contributes to establishing standard of film bagginess measurement in LiB separator industry. John holds a Master of Business Administration (MBA) in operations research from Kyungpook National University in Daegu, South Korea and a Bachelor of Science in mechanical engineering from Hanyang University in Seoul, South Korea.
Stepan is vice president of global information technology (IT) applications for Polypore International, LP, Celgard’s parent company. He joined Polypore in 2011 and has served on Celgard’s leadership team since 2015. Before joining Polypore, he held various technical and leadership roles in IT with Eaton Corporation, Fromagerie Bel and Springs Window Fashions. Stepan has a Bachelor of Science degrees in computer science and electrical engineering from The Ohio State University. Stepan also has a master’s degree in information technology from University of Phoenix and a Ph.D. in economics from the Russian Academy of Sciences.
Ana joined Celgard in 2014 and currently leads the company’s global finance function. Ana has progressed through various roles within the finance organization, including financial analyst, cost accounting manager and senior finance manager. In these roles, she led the cost accounting team and the financial reporting function, identified areas for cost reduction and developed analyses to support the strategic financial goals for the company. Prior to joining Celgard, Ana was assistant controller at SMS Systems Maintenance Services and spent three years in public accounting at Grant Thornton in the audit practice. Ana is a Certified Public Accountant (CPA) and holds a Master of Science in accounting and a Bachelor of Science in business administration with a concentration in accounting and international business, both from Appalachian State University.
James joined Celgard in 2008 and has held multiple positions in process engineering, production management and as plant manager for the Charlotte facility, driving continuous improvement and cost reduction. Before joining Celgard, James worked at Milliken & Company focusing on manufacturing excellence in both textile and chemical industries. James earned a Bachelor of Science in chemical engineering from North Carolina State University.
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