Morgan Stanley Investment Banking To Use Siebel eBusiness Applications; Real-Time View to Facilitate Management of Complex Investment Banking Relationships

Business Wire, June 11, 2001

Business Editors/High Tech Writers

SAN MATEO, Calif.--(BUSINESS WIRE)--June 11, 2001

Siebel Systems, Inc. (Nasdaq:SEBL), the world's leading provider of eBusiness applications software, today announced that Morgan Stanley (NYSE:MWD), a preeminent global financial services firm, has licensed Siebel eBusiness Applications for use by its Investment Banking Division.

Morgan Stanley's investment banking division is acknowledged as a leader in its field in markets around the world. The firm has been ranked among the top institutions in mergers and acquisitions advice, equity and equity-related transactions underwriting, high yield financing and corporate debt issuance. With more than 2000 professionals, Morgan Stanley bankers work together to advise clients on the complete range of global strategic and financial activities and services. The investment banking division provides advice on complex financial transactions including mergers and acquisitions, financial restructuring and privatizations, and equity and debt underwriting.

With the implementation of Siebel eBusiness Applications, Morgan Stanley bankers may view and share information about their corporate clients with team members across departments and around the globe. This real-time view will facilitate greater collaboration and management of complex institutional relationships.

Morgan Stanley is a preeminent global financial services firm that maintains leading market positions in each of its businesses -- Securities, Asset Management and Credit Services. The company combines leadership in investment banking and institutional sales and trading, with strengths in providing investment and global asset management services as well as quality consumer credit products.

About Siebel Systems

Siebel Systems, Inc. (Nasdaq:SEBL) is the world's leading provider of eBusiness applications software. Siebel Systems provides an integrated family of eBusiness applications software, enabling multichannel sales, marketing, and customer service systems to be deployed over the Web, call centers, field, reseller channels, retail and dealer networks. Siebel Systems' sales and service facilities are located in more than 37 countries. For more information, please visit Siebel Systems' Web site at www.siebel.com.

Except for the historical information contained herein, this press release contains forward-looking statements that involve risk or uncertainties. Future operating results of Siebel Systems may differ from the results discussed or forecasted in the forward-looking statements due to factors that include, but are not limited to, risks associated with customer relations, such as the availability of Siebel Systems' products and services, customer implementation of products and services, relationships with third-party vendors and systems integrators, concentration of revenues in a relatively small number of customers, existence of errors or defects in products, ability to successfully manage growth, significant current and expected additional competition and the need to continue to expand product distribution and services offerings. Further information on potential factors that could affect the financial results of Siebel Systems are included in Siebel Systems' Annual Report on Form 10-K for the year ended December 31, 1999 and its other filings with the Securities and Exchange Commission.

Note to Editors: Siebel is a trademark of Siebel Systems, Inc. and may be registered in certain jurisdictions. All other product and company names mentioned are the property of their respective owners and are mentioned for identification purposes only.