Digital Health Executive & Mental Health Advocate; CEO at Calm; Author of "Recharge"; Former COO at Zynga

San Francisco, CA, USA
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David Ko Biography

David Ko is a business executive, entrepreneur, and mental health advocate recognized as the CEO and board member of Calm, a mental health brand known for its app focused on sleep, relaxation, and meditation. Ko's leadership experience includes roles in investment banking and executive management, with a focus on digital health and wellness. At Calm, he has overseen the company's expansion into more than 190 countries, supporting millions seeking to improve their well-being. Ko's personal experience with panic attacks as a teenager informs his perspective on mental health challenges.

Prior to Calm, Ko held senior executive positions at Yahoo, including senior vice president of audience, mobile, and local businesses. He later served as chief operating officer at Zynga, where he contributed to the company's public offering. Ko was also board member, president, and chief operating officer of Rally Health, a digital health company acquired by UnitedHealth Group. Before joining Calm, he co-founded and served as CEO of Ripple Health Group, a health technology company acquired by Calm.

Following the acquisition, Ko led the launch of Calm Health, a mental health care solution for payers, providers, and self-insured employers, designed to integrate mental and physical health care. He has contributed to higher education and philanthropy as a member of the board of trustees at New York University and as a board member of NYU Stern Venture Fellows.

Ko is the author of the Amazon bestseller "Recharge: Boosting Your Mental Battery One Conversation at a Time," and has been featured in TIME Leadership Brief, named a LinkedIn Top Voice, and recognized by RockHealth as one of the Top 50 Leaders in Digital Health. Drawing from personal experiences and interviews with public figures, Ko developed "the battery check," a framework for initiating conversations about mental health. He emphasizes the importance of explaining the rationale behind leadership decisions to prevent burnout. Ko is known for his direct approach to workplace well-being and digital health, contributing to ongoing discussions in the mental health industry.

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Speaker profile last updated by AAE Talent Team on 10/30/2026.

David Ko Videos

David Ko - The Next Big Thing in Health podcast

David Ko - The Next Big Thing in Health podcast

AHIP President and CEO Matt Eyles and co-host Laura Evans were joined by David Ko CEO of Calm and Jeff Warren a Calm meditation instructor.

  • How do I book David Ko to speak at my event?

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  • What are the speaker fees for David Ko

    Speaking fees for David Ko, or any other speakers and celebrities, are determined based on a number of factors and may change without notice. The estimated fees to book David Ko are available upon request for live events and available upon request for virtual events. For the most current speaking fee to hire David Ko, click the Check Availability button above and complete the form on this page, or call our office at 1.800.698.2536 to speak directly with an experienced booking agent.
  • What topics does David Ko speak about?

    David Ko is a keynote speaker and industry expert whose speaking topics include Digital Health, Entrepreneurship, Executive Leadership, Health & Wellness, Mental Health, Non-Fiction Authors, Stress Management, Technology
  • Where does David Ko travel from?

    David Ko generally travels from San Francisco, CA, USA, but can be booked for private corporate events, personal appearances, keynote speeches, or other performances. For more details, please contact an AAE Booking agent.
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David Ko is a keynote speaker and industry expert who speaks on a wide range of topics. The estimated speaking fee range to book David Ko for your event is available upon request. David Ko generally travels from San Francisco, CA, USA and can be booked for (private) corporate events, personal appearances, keynote speeches, or other performances. Similar motivational celebrity speakers are Solome Tibebu, Iman Abuzeid, Peter Diamandis, Chet Kittleson and Ramin Bastani. Contact All American Speakers for ratings, reviews, videos and information on scheduling David Ko for an upcoming live or virtual event.

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