Meet our Leadership Team

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ABOUT

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BIOS

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DAVID TESSMANN KEYS

David Tessmann-Keys

David Tessmann-Keys

President

President David Tessmann-Keys is committed to promoting a workplace where both men and women have opportunities to advance their careers and realize their full potential.

David has an extensive background in organizational development consulting, spanning Australia, Asia, Europe, and the U.S. He is responsible for developing and executing DDI’s global business strategy, including sales, marketing, business development, consulting, and financial performance. He can be found presenting at conferences around the world on various leadership and executive topics.

Previously, David served as DDI’s Executive Vice President, leading the company’s 30 offices across Europe, Asia, and Australia and managing DDI’s affiliate relationships in sub-Saharan Africa and the Middle East.

Meet More Team Members

 
Tacy Byham, Ph.D.
Tacy Byham, Ph.D.
Chief Executive Officer
Jazmine Boatman, Ph.D.
Jazmine Boatman, Ph.D.
Senior Vice President, U.S. Operations and Customer Success Strategy
Kelli Buczynski
Kelli Buczynski
Chief People Officer
William C. Byham, Ph.D.
William C. Byham, Ph.D.
DDI Founder and Executive Chairman
Gina Dickson
Gina Dickson
Chief Product and Marketing Officer
Joni Murello
Joni Murello
Vice President, General Counsel
Douglas Reynolds, Ph.D.
Douglas Reynolds, Ph.D.
Executive Vice President
Steve Runkel
Steve Runkel
Senior Vice President, Global Sales Strategy
Patsy Tsao
Patsy Tsao
Senior Vice President and Chief Financial Officer
Bruce Watt, Ph.D.
Bruce Watt, Ph.D.
Senior Vice President, Europe, Australia, India, and Licensee Partners
Mindy Yeh
Mindy Yeh
Senior Vice President, Asia