Brian Halligan is a technology entrepreneur and investor who co-founded HubSpot, the publicly traded CRM company, and served as its CEO until 2021. Brian Halligan's Twitter Score is 144 out of 1000 (an Excellent rating) as of September 2026, ranking #4,049 (top 1%) among 486,860 tracked accounts.
Brian Halligan co-founded HubSpot and currently serves as its chairperson. He also works at Sequoia Capital as a growth advisor and is a senior lecturer in Technological Innovation, Entrepreneurship, and Strategic Management at MIT Sloan School of Management. In addition, he co-founded Propeller Ventures, a venture fund focused on companies tackling climate change through ocean solutions, which per Axios unveiled its first $100 million fund.
Brian Halligan hosts the Long Strange Trip podcast and maintains an active presence across the startup and venture capital communities. He has accumulated 106,566 followers as of September 2026 and published 16,701 posts on the platform. Brian Halligan has been mentioned by 174 accounts, with 893 total mentions.
Who follows Brian Halligan on X?
The accounts that follow Brian Halligan include 672 founders, 215 angel investors, 77 influencers and 26 VCs, among them Nikita Bier, Kyle Samani, Anthony Pompliano, David Sacks, Garry Tan and Vance Spencer.