Leise Sandeman

Leise Sandeman is the CEO and co-founder of Pathways, a climate-tech startup building the data layer for sustainable manufacturing. Pathways uses AI to automate the creation of Life Cycle Assessments (LCAs) and Environmental Product Declarations (EPDs) for building-material makers - concrete, steel, cement, glass - turning a months-long consultant slog into a process that takes weeks. A Copenhagen native and former McKinsey sustainability consultant who scaled a recycling venture before studying at Harvard and MIT, Leise co-founded Pathways in 2022 with Alex Cooper after meeting in an MIT entrepreneurship class. The company raised an oversubscribed $2.5M seed round in February 2024 and now serves manufacturers across hundreds of plants.