Siebel Systems to Buy Janna Systems

[Toronto, CANADA]- Siebel Systems Inc., a supplier of e-business
application software, will acquire Janna Systems Inc., a provider of
e-business solutions for the financial services industry in a share exchange transaction.

Siebel Systems will integrate Janna’s technology into the Siebel eBusiness Applications, enhancing its multi-channel
e-business solutions for financial services institutions in the retail banking and brokerage, institutional finance and
insurance industries.

Siebel Systems’ financial services customers include Bank of America Corp., Charles Schwab & Co., Inc., The
Chase Manhattan Corp., Deutsche Bank, Fidelity Investments, The Hartford Financial Services Group, Prudential
plc, and Zurich Insurance.

Janna Enterprise Suite 2001 is a solution for institutional finance customers, including investment banking,
institutional sales, research and private client services. Its clients include Allstate Insurance, Bank One, Dain
Rauscher, First Union Securities, Lehman Brothers, Merrill Lynch and TD Bank Financial Group.

As part of this acquisition, William M. Tatham, chairman and chief executive officer of Janna Systems Inc., will
become vice president and general manager of Siebel Systems institutional finance business unit for Siebel Financial

The companies will integrate the two complementary product families into a single product suite based on a common
Web architecture beginning with Siebel Financial Services 2001, planned for release in Summer 2001.

Together, Siebel Systems and Janna will fully support all of their current customers and products and will offer a
comprehensive upgrade path to the unified Siebel Financial Services product line. The transaction is expected to
close in the fourth quarter 2000.

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