Leadership Team

SiGNa is led by a group of individuals who believe that the most serious problems our world faces — affordable energy supplies, better medicines, cleaner production processes — can be solved with better chemistries. Each day they work with SiGNa’s team to help create sustainable products for a cleaner and safer future.

  • Michael Lefenfeld, M.Phil.

    President & Chief Executive Officer
    Michael Lefenfeld is an innovative business and technology executive with a track record for developing disruptive science-based technologies. Lefenfeld has launched four technology companies, including one that commercialized a new sensor technology which is now the basis for all pulse oximeter devices used today. Previously, Lefenfeld held research positions at DuPont, Bell Laboratories, and Procter & Gamble. He originated SiGNa’s cornerstone technology and leads the company’s effort to make stabilized alkali metals a leading solution for the oil & gas and industrial chemical industries.

    He received his Bachelor of Science in Chemical Engineering from Washington University and his Master of Science and his Master of Philosophy in Chemistry from Columbia.
  • Mike Alt, M.S.

    Vice President, Technology & Manufacturing
    Mike Alt joined SiGNa after a 35-year career with Eastman Kodak, where he developed a strategy to transform Kodak’s 100 year old, 1,250-acre manufacturing site into a mixed use, premier manufacturing center. His diverse skill set includes new product development, chemical manufacturing, and plant management and business development. Prior to his time at Kodak, Alt held plant management roles at Synthetic Chemicals Group and Rochester Photochemicals Division. At SiGNa, Alt provides leadership, strategic planning, and daily management for our research, product development, and manufacturing functions.

    Alt holds a Bachelor of Science in Chemical Engineering from Clarkson, and a Master of Science in Electrical Engineering from the Rochester Institute of Technology.
  • Richard Fisher, Ph.D.

    Vice President, Industrial Chemicals
    Richard Fisher is a seasoned technology and business leader, with more than 25 years of experience in the life sciences, chemical, and polymer industries. He has long track record of commercializing successful transformative technologies for both large and small organizations including: ExxonMobil, Materia, Symyx Technologies, and Amyris. In his role at SiGNa, Fisher is responsible for strategy development, establishing technology roadmaps and business development functions.

    He holds a Bachelor of Arts from the University of California, San Diego, and a Ph.D. in Chemistry from the Massachusetts Institute of Technology.
  • Kate Carney, MBA

    Vice President, Corporate Operations
    Kate Carney brings a diverse background of organizational development, strategic planning and communications experience. During her career, she has worked with technology start-ups, non-profits, and Fortune 500 companies to manage business planning initiatives, organizational growth strategies, and large-scale development projects. At SiGNa, Carney is responsible for overseeing the corporate operations with the goal of expanding the company’s global footprint.

    She holds a Bachelor of Science in Management from the State University of New York at Geneseo, and a Masters of Business Administration from Northeastern University.