David Ko headshot

David Ko

CEO, Calm
Partner Committee

David is the CEO of Calm, the leading app for sleep, meditation and relaxation, where he also serves on the Board of Directors. Prior to joining Calm, David was the co-founder and CEO of health tech company Ripple Health Group (which was acquired by Calm in 2022). Following the acquisition and under David’s leadership, the company launched Calm Health, a mental health care solution for payers, providers and self-insured employers designed to bridge the gap between mental and physical health care. 

Before founding Ripple Health Group, David was a Board Member, President and COO of Rally Health, a digital health company. Rally’s solutions are available to nearly 55 million people through health plans, care providers, and more than 200,000 employers. Rally was acquired by UnitedHealth Group in 2017.