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 143 out of 1000 (an Excellent rating) as of October 2026, ranking #4,119 (top 1%) among 498,181 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 106,977 followers as of October 2026 and published 16,907 posts on the platform. Brian Halligan has been mentioned by 181 accounts, with 902 total mentions.
Who follows Brian Halligan on X?
The accounts that follow Brian Halligan include 686 founders, 216 angel investors, 80 influencers and 26 VCs, among them Nikita Bier, Kyle Samani, Anthony Pompliano, David Sacks, Garry Tan and Vance Spencer.