About the Founders

Our Leadership Team

William C. Byham, Ph.D.
DDI Chairman and Chief Executive Officer

Bill Byham is cofounder, chairman, and CEO of DDI. Bill works to establish the vision, values, and strategic direction of the company. He supervises major DDI product development and consulting projects.

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Robert W. Rogers
President

Bob oversees our worldwide daily operations, taking the lead on DDI's leadership development, performance management, and cultural initiatives.

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Ronald R. Dalesio
Executive Vice President of Worldwide Sales

Ron directs DDI's continued globalization while overseeing the company's operations in Australia, Asia, Africa, Europe, and South America.

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Scott Erker, Ph.D.
Senior Vice President, Selection Solutions

Scott applies his global perspective of workforce selection to help organizations implement better hiring practices and identify the right people for their needs and culture.

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William D. Koch
Vice President and Chief Financial Officer

Bill formulates DDI's financial strategies and provides leadership for production, distribution, and customer information systems.

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Sheryl Riddle
Senior Vice President, Consulting Services

Sheryl develops and executes DDI's consulting business strategies in North America and ensures high-quality client delivery.

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Audrey  B. Smith, Ph.D.
Senior Vice President, Executive Solutions

Audrey and her team spearhead DDI’s global consulting resources to help organizations identify, develop, and deploy executive-level talent.

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David Tessmann-Keys
Senior Vice President of International Operations

David and his team spearhead DDI’s global operations.

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Patterson S. (Pete) Weaver
Senior Vice President of Leadership Solutions and Chief Learning Officer for DDI

A noted speaker and thought leader, Pete oversees the development and implementation of DDI's electronic technologies, e-learning systems, computer applications packages, and other emerging technologies.

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Richard S. Wellins, Ph.D.
Senior Vice President of Global Marketing & Business Development

Rich is responsible for our strategic approaches to global marketing, e-commerce, internal knowledge management, and DDI's Center for Applied Behavioral Research.

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