Bruce Falck, Angel Investor

Bruce Falck is Founder and CEO of Halcyon, a data platform helping organizations navigate decarbonization. Halcyon’s mission is to accelerate the journey toward sustainability by combining optimism about technology with a customer‑centric, collaborative, and earnest culture. Previously, Bruce spent five years as GM of Revenue Products at Twitter, where he led product and technical strategy for systems generating over $6B in annualized revenue, scaled the team from 250 to nearly 1,000, and served on the company’s management team. He was also CEO of Turn, guiding its turnaround and eventual $325M sale to Singtel/Amobee, and COO of BrightRoll, which was acquired by Yahoo for $640M. Earlier in his career, he held leadership roles at Google in Ads Platform Strategy. His career reflects a consistent focus on scaling advertising technology platforms, building high‑impact teams, and now applying his expertise to climate technology. As an angel investor, his portfolio includes Particle.News, Mirra, and LiftIgniter, highlighting his interest in startups innovating in media, personalization, and information platforms.