Ingmar Rentzhog is the Founder & CEO of We Don’t Have Time, the world’s largest media platform for climate action. A serial entrepreneur with a background in finance, he has a proven track record of building businesses and driving change at the intersection of sustainability, technology, and communication. In 2025, he was named to Table.Media’s Top 100 Most Influential People in Climate. Dubbed an “eco-warrior” by The Sun and “Mark ZuckerVert” by FranceTV2, he is a recognized leader in climate engagement and corporate accountability. Ingmar is also a trained Climate Reality Leader under Al Gore.