Dr. Mark DeVolder is a Top Change Management & Transformation Expert, Award Winning Motivational Keynote Speaker Empowering Confidence through Change. Many of the best companies Book Mark DeVolder, Why? Mark can teach you how to change, anticipate business trends and accelerate future-proof transformation. He’s done it before with industry leaders like Qatar Petroleum, PepsiCo, Royal Bank of Canada and Bristol-Myers Squibb.