Bill McDermott to Leave Gartner.

Business Editors

STAMFORD, Conn.--(BUSINESS WIRE)--May 24, 2001

CEO Michael Fleisher Assumes President Title

Gartner, Inc. (NYSE: IT and ITB), the world's leading research and advisory firm, today announced that William R. McDermott, 39, is leaving his position as President of the Company, effective June 15, to join Siebel Systems, Inc. as Executive Vice President, Worldwide Sales Operations. Michael D. Fleisher, Gartner's Chief Executive Officer, will assume the title and responsibilities of President.

Fleisher said, "Bill's operational and sales expertise and personal drive have significantly contributed to the success of the Gartner organization. He has been instrumental in building a team of highly talented management professionals. On a personal note, I wish Bill a tremendous amount of success and happiness as he begins the next stage of his career. I look forward to more actively managing the day-to-day operations of Gartner and driving consistent growth and enhanced profitability in every aspect of our business."

About Gartner

Gartner, Inc. is a research and advisory firm that helps more than 10,000 clients understand technology and drive business growth. Gartner's divisions consist of Gartner Research, Gartner Consulting, Gartner Measurement and Gartner Events. Founded in 1979, Gartner, Inc. is headquartered in Stamford, Connecticut and consists of 4,600 associates, including 1,400 research analysts and consultants, in more than 80 locations worldwide. The company achieved fiscal 2000 revenues of $859 million. For more information, visit www.gartner.com.

Certain statements contained herein, including statements regarding the Company's business outlook, the development of the Company's services, markets and future demand for the Company's services and other statements regarding matters that are not historical facts, are forward-looking statements (as defined in the Private Securities Litigation Reform Act of 1995). Such forward-looking statements include risks and uncertainties; consequently, actual results may differ materially from those expressed or implied thereby. Factors that could cause actual results to differ materially include, but are not limited to, ability to attract and retain professional staff of research analysts and consultants upon whom the Company is dependent, ability to effectively manage growth, ability to achieve continued customer renewals and achieve new contract value, backlog and deferred revenue growth in light of potentially adverse economic conditions and competitive pressures, ability to integrate operations of possible acquisitions, ability to carry out the Company's strategic initiatives and manage associated costs, ability to manage the Company's strategic partnerships, rapid technological advances, substantial competition from existing competitors and potential new competitors, risks associated with intellectual property rights important to the Company's products and services, additional risks associated with international operations including foreign currency fluctuations and other risks listed from time to time in the Company's reports filed with the Securities and Exchange Commission. Forward-looking statements included herein speak only as of the date hereof and the Company undertakes no obligation to revise or update such statements to reflect events or circumstances after the date hereof or to reflect the occurrence of unanticipated events or circumstances.