Comerica Commended for Climate Change Disclosure Practices

Featured in Carbon Disclosure Leadership Index for Third Consecutive Year

First Place Ranking Among Financials; Sixth Place Ranking Among S&P 500

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Sep 21, 2010, 09:08 ET

DALLAS, Sept. 21 /PRNewswire-FirstCall/ -- Comerica Incorporated (NYSE: CMA) has been commended by the Carbon Disclosure Project (CDP), which represents 534 institutional investors with $64 trillion in assets under management, for its approach to climate change disclosure.

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For the third consecutive year, Comerica is featured in CDP's "Carbon Disclosure Leadership Index." Comerica obtained a first place ranking among financials and a sixth place ranking among the S&P 500. This index, a key component of CDP's annual S&P 500 Report, highlights the constituent companies within the S&P 500 Index which have displayed the most professional approach to corporate governance in respect of climate change disclosure practices. Companies are scored on their climate change disclosure and high scores indicate good internal data management and understanding of climate change related issues affecting the company.

The index, compiled by PricewaterhouseCoopers (PwC) on behalf of CDP provides an evaluation tool for institutional investors. In 2010, it comprises 53 constituents of the S&P 500 Index based on analysis of the responses to CDP's 2010 questionnaire which focused on greenhouse gas emissions, emissions reduction targets and risks and opportunities associated with climate change.

"We are pleased to once again be featured in this prestigious index," said Richard J. Plewa, senior vice president and national director of Corporate Sustainability for Comerica. "Our banking company has made a strong commitment to conduct our business in ways that protect and preserve the environment, and that enhance the human and social capital of the communities in which we operate. Our inclusion in the Carbon Disclosure Leadership Index for a third consecutive year is certainly gratifying, and is a reflection of the hard work and commitment of Comerica colleagues to our company's sustainability programs."

Paul Dickinson, chief executive of the Carbon Disclosure Project, said: "The Carbon Disclosure Leadership Index recognizes companies that demonstrate good internal data management practices for understanding greenhouse gas emissions, including energy use. Companies that make this index have also demonstrated clear consideration of how climate change is and will impact their business. As companies' understanding of climate change issues grows, they are better placed to take positive action to manage and mitigate its risks."

The S&P 500 Report including names of companies featured in the Carbon Disclosure Leadership Index can be found at www.cdproject.net.

About Comerica

Comerica Incorporated is a financial services company headquartered in Dallas, Texas, and strategically aligned by three business segments: The Business Bank, The Retail Bank, and Wealth & Institutional Management. Comerica focuses on relationships, and helping people and businesses be successful. In addition to Texas, Comerica Bank locations can be found in Arizona, California, Florida and Michigan, with select businesses operating in several other states, as well as in Canada and Mexico. Comerica reported total assets of $55.9 billion at June 30, 2010. To receive e-mail alerts of breaking Comerica news, go to http://www.comerica.com/newsalerts.

About CDP

The Carbon Disclosure Project (CDP) is an independent not-for-profit organization holding the largest database of primary corporate climate change information in the world. Thousands of organizations across the world's largest economies now measure and disclose their greenhouse gas emissions and climate change strategies through CDP, in order that they can set reduction targets and make performance improvements. This data is gathered on behalf of 534 institutional investors, with combined assets under management in excess of $64 trillion, as well as purchasing organizations and government bodies and made available for integration into business and policy decision making. For more information visit www.cdproject.net.

SOURCE Comerica Incorporated