Kristy R. Ellmer is a managing director and partner at Boston Consulting Group (BCG), where she leads BCG Transform in North America and cofounded the firm’s Behavioral Science Lab. A global authority on transformation and former chief transformation officer, she has led numerous organizations across dozens of industries including energy, media, retail, and banking, through periods of profound change.

A TED speaker and leader emeritus of BCG’s global culture and change management topics, Ellmer combines data-driven insights with a deep understanding of human behavior to advise boards and C-suite executives on resilience, growth, and sustainable transformation. Over her career, she has delivered multibillion dollars of value and believes transformations provide an opportunity for both leaders and organizations to thrive.

Ellmer is also the national bestselling author of How Change Really Works, published by Harvard Business Review Press.