Dan LeCloux

Dr. Daniel LeCloux is Executive Vice President and Chief Technology Officer at Ecolab, for which he is responsible for worldwide research and development investment. Dr. LeCloux directs innovation strategy and investment, and the execution and management of all technical resources. He has over 20 years of research management experience creating and leading large, multidisciplinary product development project teams in corporate and business groups, and he has over 50 issued patents within the chemical and electronic material markets. Dr. LeCloux began his career with DuPont in 1998 as a research chemist and held a variety of technical and leadership positions in research and product development within DuPont Displays. In 2011, he served as an Associate R&D Director for Dow Chemical in Core R&D. He rejoined DuPont in 2014 as R&D Director of DuPont Microcircuit Materials, and he was R&D Director for the Photovoltaics and Advanced Materials business from 2016-2017. From 2017-2020 he was R&D Director for the Emerging Technologies, Leveraged Analytical Sciences, and Leveraged Engineering groups within DuPont’s Electronics and Imaging Division. From 2020-2021 he served as Global R&D Director for Chemical Mechanical Planarization Technologies and Advanced Cleans Technologies businesses within DuPont Semiconductor Technologies. In 2022 he served as Vice President of Technology for DuPont Electronics & Industrial. He then joined Ecolab in 2023, serving as Senior Vice President for Research, Development, and Engineering (RD&E) for the Global Water business segment. He was promoted to Executive Vice President in April 2025 and in Jan. 2026 assumed the role of Chief Technology Officer for Ecolab. Dr. LeCloux received his doctoral degree from Massachusetts Institute of Technology and his Bachelor of Science from the University of Minnesota. He is based in Eagan, MN.