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David Isserman is an American ecommerce entrepreneur, private investor, and philanthropist known for his interest in promoting scientific exploration, conservation, and discovery. In 2023, he received a Portuguese knighthood, bestowed upon him by H.R.H. Dom Duarte, Duke of Braganza. He is a Life Member & Board Director at The Explorers Club in New York and an Advisory Trustee at the Academy of Science in St. Louis.