Brian Halligan is a co-founder of HubSpot. He is a pioneering entrepreneur known for transforming marketing strategies from outbound to inbound approaches and evolving the funnel concept to the flywheel model. Currently a senior advisor at Sequoia Capital, he holds degrees from MIT Sloan School of Management and recently earned the Diligent Climate Leadership Certification (September 2023) for his new company, Propeller, that invests in companies fighting climate change in the ocean. His influential publications include “Marketing Lessons From The Grateful Dead” and “Inbound Marketing” (co-authored with Dharmesh Shah). Brian’s innovative approach to marketing has reshaped how businesses attract and engage customers in the digital age.