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Board of Directors

Diana M. Peninger

Diana M. Peninger


Ms. Peninger founded and serves as CEO of Geneva Lake Partners LLC since 2017. Geneva Lake Partners is an advisory firm that works with middle market private industrial companies to help them develop individual strategic plans, assess acquisitions, improve profitability and identify investment partners. She serves on the board of Rogers Group, Inc. since July 2017, chairs the compensation committee and is a member of the audit committee. She served four years as the Board Vice-Chair of the Committee of 200 which is a non-profit organization of the world’s most successful women CEO’s and senior business executives.

Ms. Peninger spent 30 years in the chemical industry including three expat assignments in Frankfurt, Germany. In 2018, she served as interim CEO for Synata Bio a renewable clean fuels and chemicals technology company owned by True North Venture Partners. From 2007 through 2016, she held various roles within Celanese Corporation including, Vice President, Acetyl Intermediates, a $2.3B global commodity business portfolio, Vice President and General Manager, EVA Performance Polymer Business serving the medical, adhesives, solar and film industries and as Vice President General Manager for Nutrinova Specialty Food Ingredients business. As Director of Corporate Strategy and Business Development, she lead the business development initiatives to establish manufacturing locations in low cost regions of China and Middle East. From 2005 to 2007 while at Chemtura Corp., Ms. Peninger served as Vice President, Consumer Products and Vice President, PVC Additives businesses. She started her career in 1987 with Celanese Corporation in Pampa,Texas as a plant engineer before taking on progressively more responsibility including Director of Global Glass Fibers business and leading the integration of the recently acquired Clariant Emulsions business and the subsequent acquisition of the ICI/Vinamul Emulsions businesses resulting in a leading global industry emulsions position.

Ms. Peninger holds a B.S. in Chemical Engineering from South Dakota School of Mines and was honored in 2017 with the prestigious “Distinguished Alumni” award for achievement of excellence in their careers and their communities. She is a National Association of Corporate Directors (NACD) Board Leadership Fellow and serves on the University Advisory Board for her alma mater, South Dakota School of Mines & Technology.

Independent Director