Management

Executive Officers and Directors

Michael R. Klein

Chairman

Michael R. Klein has been the Chairman of our Board of Directors since he and Mr. Florance founded the Company in 1987. He was a partner of the law firm Wilmer Cutler Pickering Hale & Dorr, LLP from 1974 until the end of 2005. Mr. Klein currently serves as Chairman of the board of directors of The Sunlight Foundation, a non-profit educational organization, Vice Chairman of the board of directors of Perini Corporation, and as a director of SRA International, Inc.

Andrew C. Florance

Founder, Director, President and Chief Executive Officer

Andrew C. Florance founded CoStar Group, Inc. in 1987, fundamentally changing the way commercial real estate professionals access, use and share property information. Through CoStar, Mr. Florance pioneered the concept of commercial real estate firms outsourcing research functions to a third-party information provider, combining the operational efficiencies of a computer-based information system with the more complete, higher quality and standardized property information produced by the industry's first independent research organization. This key innovation resulted in substantial productivity gains for subscribers to CoStar's information service, and remains the cornerstone of the company's success.

As President and CEO, Mr. Florance has directed CoStar's successful expansion from start-up, to its IPO in July 1998, and to its market-leading position today as a publicly traded enterprise (Nasdaq: CSGP) with approximately 1,400 people working for the company worldwide, a client base that includes the commercial real estate industry's leading brokerage firms and property owners, and an international service platform covering the United States, the United Kingdom and Paris, France.

With an abiding interest in environmental issues, Mr. Florance is actively involved in building awareness of energy efficiency and sustainability within the commercial property sector. In 2008, he co-authored the first comprehensive analysis of leasing and sales activity in energy-efficient office buildings in the United States. The study, which was published in the Journal of Real Estate Portfolio Management, was selected by the American Real Estate Society as the Best Paper published in the prestigious academic real estate journal in 2008. The groundbreaking study was also cited as a critical factor in CoStar Group's selection as the only commercial real estate-related company to win an ENERGY STAR Award for Excellence from the U.S. Environmental Protection Agency in 2009.

In addition, Mr. Florance has received numerous other awards recognizing his accomplishments as an entrepreneur, innovator and corporate leader, including:

• - Named Real Estate Industry Executive of the Year for 2009 by the editors of the Cornell Real Estate Review;
• - Recognized for leading CoStar to its ranking among the 50 fastest growing Maryland technology companies by Deloitte & Touche for 10 consecutive years, and its selection by Business 2.0 magazine for its list of the 100 fastest-growing public technology companies;
• - Named Transwestern 's 2007 Public Company Trendsetter of the Year;
• - Honored by Commercial Real Estate Women (CREW) with its 15th anniversary award for industry innovation.
• - Received Ernst & Young's Entrepreneur of the Year award in 2000;
• - Won a prize from NAIOP, the Commercial Real Estate Development Association, for his contribution to a white paper examining the potential impacts of 9-11 on investment-grade office buildings;
• - Awarded two patents by the United States Patent and Trademark Office for developing mobile information gathering systems for collecting comprehensive commercial real estate information in the field.

A graduate of Princeton University, Mr. Florance serves on the Board of Directors for the American Real Estate Society, an association of real estate thought leaders whose members include leading global academic and professional researchers dedicated to exploring the critical issues of applied real estate decision-making. He also is a member of the Sierra Club and serves on the Governing Board for Beauvoir, the National Cathedral Elementary School, and on the Board of Trustees of Ford's Theatre in Washington, DC.

Brian Radecki

Chief Financial Officer

Brian Radecki was appointed CoStar Group's Chief Financial Officer in 2007. He has served in a number of financial and senior executive positions since joining the company in 1997. Prior to his appointment as CFO, Mr. Radecki served as Vice President of Research Operations, the company's largest operating area, and before that he was Director of Accounting and Finance where he was involved in every aspect of the company's accounting and finance functions in the U.S. and U.K. – from internal audit, tax and budgeting to SEC reporting and Sarbanes-Oxley compliance. Mr. Radecki also served as an integral member of CoStar's IPO team in 1998 and follow-on public offering in 1999. He has played a key role in the company's mergers and acquisitions, including the purchase, integration and operation of Comps, Inc. in 2000, FOCUS in 2003, and the Scottish Property Network the following year. Prior to joining CoStar, Mr. Radecki was the accounting manager at Axent Technologies, Inc. a publicly held international security software company. He also worked at Azerty, Inc. and the public accounting firm, Lumsden & McCormick, LLP, in Buffalo, NY. He earned a B.S. in business administration and a dual degree in both accounting and finance from the State University of New York at Buffalo.

Jennifer Kitchen

Senior Vice President of Research

Jennifer Kitchen, Senior Vice President of Research, oversees CoStar Group's initiatives for gathering, researching and verifying commercial real estate property data, both in the field and in research centers in Bethesda, Columbia and White Marsh, Maryland; San Diego, California; Chennai, India; and Manila, Philippines. Ms. Kitchen first joined CoStar in 1994 as a research analyst for the company's first New York City research team and has held increasingly responsible management positions since then. Between 1995 and 1997, she led CoStar's research expansion into the Los Angeles market and managed its research operations on the West Coast. In 1998, Ms. Kitchen established CoStar's first field research and photography operations, earning a subsequent promotion to director of field research and photography. She was appointed vice president of field research in 2004, where she led the company's overall field operations for collecting building-level data and photographing properties throughout the United States. Ms. Kitchen holds a B.A. from Wellesley College in Wellesley, Massachusetts.

John Stanfill

Senior Vice President of Sales and Customer Service

John Stanfill, Senior Vice President of Sales and Customer Service, first joined us in June 1995 as an Account Executive for the New York City market. Since then, he has held positions of increasing responsibility at CoStar, ranging from business development and national market expansion to management of the Company's Inside Sales Division. Before being appointed Senior Vice President of Sales and Customer Support, Mr. Stanfill held the position of Senior Vice President of Marketing & Product Management. Prior to joining CoStar, Mr. Stanfill founded a commercial real estate information service in Seattle that provided access to images of commercial buildings throughout the market. He earned a B.A. from Boston University.

Paul Marples

Managing Director, CoStar UK Limited

Paul Marples, Managing Director of CoStar's European operations, previously served as Managing Director of Property Investment Exchange Ltd. (Propex), a provider of Web-based transaction platforms and data exchanges in the U.K. commercial property market. Propex was acquired by CoStar in the first quarter of 2007. Mr. Marples began his career in the commercial property industry in 1984, as a Chartered Surveyor for Weatherall Green and Smith (Atisreal) in London and Spain. From 1984 to 1996, Mr. Marples rose from Chartered Surveyor to Partner (London) to Managing Director (Spain) of Weatherall Green and Smith. In 1996, he established Brown Cooper Marples (BCM), a London-based investment brokerage firm where he served as Managing Director, before helping launch Propex beginning in 2001 through the consolidation of a number of property-related, Internet-based businesses. Mr. Marples earned a M.A. in geography from Oxford University.

David Bonderman

Director

David Bonderman is a founder of TPG. Mr. Bonderman serves as a principal and founding partner of the firm. TPG invests primarily in restructurings, recapitalizations and buyouts in the United States, Canada, Europe and Asia. Mr. Bonderman serves on the boards of the following public companies: Burger King Holdings, Inc.; Gemalto N.V.; and Ryanair Holdings, plc, of which he is Chairman. He also serves on the boards of the Wilderness Society, the Grand Canyon Trust, the World Wildlife Fund, the University of Washington Foundation and the American Himalayan Foundation. Prior to forming TPG in 1992, Mr. Bonderman was Chief Operating Officer of the Robert M. Bass Group, Inc. (now doing business as Keystone, Inc.) in Fort Worth, Texas. Prior to joining RMBG in 1983, Mr. Bonderman was a partner in the law firm of Arnold & Porter in Washington, D.C., where he specialized in corporate, securities, bankruptcy and antitrust litigation. From 1969 to 1970, Mr. Bonderman was a Fellow in Foreign and Comparative Law in conjunction with Harvard University and from 1968 to 1969, he was Special Assistant to the U.S. Attorney General in the Civil Rights Division. From 1967 to 1968, Mr. Bonderman was Assistant Professor at Tulane University School of Law in New Orleans.

Warren H. Haber

Director

Warren H. Haber has been, for more than thirty-five years, Chairman of the Board and Chief Executive Officer of Founders Equity Inc. and its affiliates, private investment concerns. Mr. Haber is also Managing General Partner of FEF Management Services, LLC, which manages Founders Equity SBIC I, L.P. Mr. Haber also serves on the board of directors of Warnex Ltd.

Josiah O. Low III

Director

Josiah O. Low, III has been a venture partner of Catterton Partners IV L.P., a private equity firm, since August 2001. Prior to that, Mr. Low worked for 16 years at the investment banking firm of Credit Suisse First Boston (formerly Donaldson, Lufkin & Jenrette), where he most recently served as Managing Director/Senior Advisor. Prior to joining Credit Suisse First Boston in 1985, Mr. Low worked at Merrill Lynch, Pierce, Fenner & Smith and was a founding Managing Director of the Merrill Lynch Capital Market Group in 1977. Mr. Low also serves on the board of directors of Rosetta Resources, Inc.

Christopher J. Nassetta

Director

Christopher J. Nassetta was named President and Chief Executive Officer of Hilton Hotels Corporation in October 2007. He formerly headed Host Hotels and Resorts, Inc., (fka Host Marriott Corporation) where he served as President and CEO since May 2000. Mr. Nassetta joined Host Hotels & Resorts in 1995 as Executive Vice President and was elected the Chief Operating Officer in 1997. Prior to joining Host Hotels & Resorts, Mr. Nassetta served as President of Bailey Realty Corporation from 1991 until 1995, and he had previously served as Chief Development Officer and in various other positions with the Oliver Carr Company from 1984 through 1991. Mr. Nassetta serves on the boards of directors of Host Hotels & Resorts, the National Association of Real Estate Investment Trusts (NAREIT) and is the chairman of the Real Estate Round Table. He is also a member of the McIntire School of Commerce Advisory Board for the University of Virginia.

Michael J. Glosserman

Director

Michael J. Glosserman is a Managing Member of The JBG Companies, an active investor, owner and developer in the Washington, D.C. metropolitan area's real estate market. Mr. Glosserman has over 35 years of experience in various aspects of investment, development and ownership of commercial and residential real estate. Prior to joining JBG in 1979, Mr. Glosserman worked in commercial real estate and development with The Rouse Company. Prior to his position at The Rouse Company, Mr. Glosserman began his career as a staff attorney for the U.S. Department of Justice. Among other positions, he serves as Board Chairman, The National Building Museum and as District Council member, the Washington Urban Land Institute District Council.

Officers

Jonathan Coleman

General Counsel and Secretary

Jonathan Coleman, our General Counsel and Secretary, first joined us in May 2000 as Deputy General Counsel. From October 1996 to May 2000, Mr. Coleman was a Trial Attorney with the U.S. Department of Justice's Civil Division. Prior to that, Mr. Coleman was an associate at Fried, Frank, Harris, Shriver & Jacobson, where he practiced commercial litigation. Mr. Coleman received a B.A. in economics from Dickinson College and his J.D. from George Washington University.

Dan Kimball

Vice President of Marketing

Dan Kimball, Vice President of Marketing, brings more than a decade of strategic marketing experience to CoStar Group. Prior to joining CoStar in early 2007, Mr. Kimball held marketing leadership positions at Capital One and other financial services firms. He also was Partner/Vice President of Advertising at Questus Inc., a leading interactive marketing agency. Throughout his career at both start-ups and Fortune 500 firms, Mr. Kimball has spearheaded new ventures and directed a range of corporate development initiatives, including business development, marketing, e-commerce and product development. He joined CoStar as Senior Director, E-Commerce, and played a key role in the development and release of CoStar Showcase. Mr. Kimball is a graduate of Colgate University and holds a bachelor's degree in philosophy.

Frank Simuro

Chief Information Officer

Frank Simuro, Chief Information Officer, joined the Company in December 1999. Prior to joining CoStar Group, Mr. Simuro was Director of Data Warehousing at GRC International, a division of AT&T Corporation. Prior to GRC, Mr. Simuro was a technology consultant specializing in operational efficiency and database technologies. Mr. Simuro holds a Masters degree in Information Systems from George Washington University and a Bachelor's degree in Computer Science from State University of New York - Geneseo.