Senior Associates

Read the professional biographies of key AHC Group senior associates below.

Ken Strassner

Ken Strassner

An AHC Group Senior Associate since 2009, Ken Strassner formerly served as the Vice President of Global Environment, Safety, Regulatory and Scientific Affairs for Kimberly-Clark Corporation.
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Michael Spanos

Michael Spanos

A seasoned corporate executive with extensive hands-on entrepreneurial experience in sustainability, corporate responsibility, management consulting, investments, and business information, Michael Spanos possesses a demonstrable track record in delivering sustainability and business development solutions.
 
As AHC Group Senior Associate, he also serves as Chair of our Delivering on the Bottom Line workshop.
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Mark Tulay

Mark Tulay

Mark Tulay has served in leadership roles in sustainability initiatives for over 25 years, focusing on advancing the metrics, measurement and management of corporate sustainability performance, and is the Founder and CEO of Sustainability Risk Advisors.
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Steve Percy

Steven W. Percy

AHC Group Senior Associate since 1999 and former Chair of our Delivering on the Bottom Line workshops. A former CEO and Chair of British Petroleum America, Steve consults on aligning business strategy, business systems, and business process with environmental and energy needs. [more...]

Dawn Rittenhouse

Dawn Rittenhouse

A former Director of Sustainability for the DuPont Company, Dawn Rittenhouse led the company's efforts with external organizations such as World Business Council for Sustainable Development (WBCSD) and the United Nations Global Compact.
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Tim Lindsey

Tim Lindsey

As an AHC Group Senior Associate, Tim Lindsey helps organizations increase their competitiveness through improved sustainability performance in their processes, products, and systems.
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Valentina Kordi

Valentina Kordi

AHC Group is adding an executive mentoring service to benefit our Corporate Affiliates and clients—which is something we have been doing informally through our Senior Associates for over 20 years.
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