Sumner Vanderhoof is CEO of Propensity, an AI-powered ABM and go-to-market orchestration platform that helps B2B organizations turn buyer signals into coordinated action and measurable revenue. He is a leading voice in the evolution of account-based marketing, championing a more unified approach that connects data, intent, engagement, prioritization, and sales activation across the buyer and customer journey.

Through Propensity, Sumner is advancing the practice of setting up a GTM engine, a methodology that helps validate buying signals, identify in-market opportunities, and unify sales and marketing teams. His work focuses on replacing fragmented tools and disconnected workflows with an intelligent, coordinated revenue system.