Leadership Team

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Our leaders have spent their careers working closely with CEOs and executive teams at some of the world’s most complex organizations. Trusted for their sharp perspective and grounded experience, they are united by a shared passion for impacting business at the intersection of leadership and performance — where human potential drives meaningful, lasting results.

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Dan Spiwack

Chief Executive Officer

Dan drives strategy execution and empowers teams to deliver high-impact results. With over 25 years of consulting experience, he helps executives tackle complex challenges and transform performance.

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Tony Prosser

President

Tony helps global leaders frame client engagements, providing innovative and transformative solutions to client business challenges through the lens of leadership mindset and language.

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Casey Freeman

Partner, Client Impact

Since 2005, Casey has coached global leaders on breakthrough projects, driving cost savings, revenue growth, and productivity. Based in Houston, he holds a BBA from SMU and enjoys the outdoors with his daughters.

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Headshot of Elizabeth Dorey

Elizabeth Dorey

Partner, Talent

Elizabeth divides her time between working with clients and hiring, training, and developing both new and current staff. Based in Houston, she enjoys skiing and traveling.

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Headshot of Patrick Bryne

Patrick Byrne

Chief Financial & Administrative Officer

Patrick brings over two decades of leadership experience in finance and operations within the professional services sector to his role at JMW.

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