LEXINGTON, Massachusetts and LONDON, April 9 /PRNewswire/ --

StreamBase Systems, Inc., a leading provider of high-performance Complex
Event Processing (CEP) software, today announced the appointment of former
Apama general manager Mark Palmer as President and Chief Operating Officer.
Chris Risley will continue as Chairman of the Board and CEO.

"I look forward to working with Mark on both the long term strategy of
the company and on the day-to-day operations," said Chris Risley,
StreamBase's CEO. "I'm delighted with our continuing success in recruiting
some of the most highly respected thought leaders in the CEP industry. Colin
Clark, the former founding CTO of Kaskad, joined StreamBase as Vice President
for Customers in January and now Mark is coming on board as President. These
are two outstanding additions to an already great team and together we will
be setting the pace in the industry for delivering tremendous value to CEP
customers everywhere."

"CEP is disruptive technology due to the way it enables time-based logic
to be easily expressed and due to the computing model of executing this logic
in mission critical environments," said Mr. Palmer. "I've admired StreamBase
as a technology leader and the vision that StreamBase founder Dr. Michael
Stonebraker set for this new computing model. I'm excited to be joining
StreamBase as CEP enters a new stage of adoption and expansion."

Prior to joining StreamBase, Mr. Palmer worked for Progress Software,
where he led that company's acquisition of CEP software vendor Apama and then
led the Apama business unit as general manager. He won an InfoWorld Innovator
award in 2005 and was named to the InfoWorld Media Group's Innovators Hall of
Fame for his work in event processing. Mr. Palmer has published over 30
articles on the application of CEP to real world problems and has spoken at
numerous industry events. Previous roles include Director of Product
Management at IONA Technologies, where he led the development of the Artix
enterprise service bus (ESB). In 1998, he co-founded YouthStream Media
Networks and served as its CTO and CIO, overseeing the growth of the company
from 0 to 400 people. YouthStream was acquired by Alloy, Inc. in 2002.
Previously, as a principal consultant with Object Design, Inc. from 1992 to
1998, Mr. Palmer was involved in the architecture, development and design of
some of the world's largest distributed systems, including GE, Cabletron,
Fidelity Investments and Lucent Technologies.

About StreamBase

StreamBase Systems, Inc., a leader in high-performance Complex Event
Processing (CEP), provides software for rapidly building systems that analyze
and act on real-time streaming data for instantaneous decision-making.
StreamBase's Event Processing Platform(TM) combines a rapid application
development environment, a low-latency high-throughput event server, and the
broadest connectivity to real-time and historical data. Leading investment
banks and government agencies rely on StreamBase to power mission-critical
applications that increase revenue, lower costs, and reduce risk. The company
is headquartered in Lexington, Massachusetts. For more information, visit
www.streambase.com.

(C) 2008 StreamBase Systems, Inc. All other trademarks or trade names are
properties of their respective owners. All rights reserved.

Web site: http://www.streambase.com