Insightful Corporation Announces Agreement to Be Acquired By TIBCO

Seattle, Washington - June 19, 2008 -

Insightful Corporation (NASDAQ: IFUL), a provider of predictive analytics and reporting solutions, today announced that it has signed a definitive agreement to be acquired by TIBCO Software Inc. (NASDAQ: TIBX) in a transaction valued at approximately $25 million, including the value of certain assumed options. Under the terms of the agreement, following the closing, Insightful stockholders will receive $1.87 in cash for each outstanding share of common stock they own. This price represents a premium of 29% over the average closing price of Insightful’s common stock over the sixty trading day period ending on June 18, 2008, the last trading day before the date of this announcement.

The Board of Directors of Insightful has unanimously approved the agreement and resolved to recommend that Insightful stockholders approve the transaction. Completion of the transaction is subject to stockholder approval and other customary closing conditions. Certain Insightful directors, officers and stockholders, representing approximately 22% of Insightful's outstanding common stock, have entered into voting agreements in support of the acquisition. The transaction is expected to close in the third quarter of 2008.

"Our Board of Directors has evaluated strategic alternatives for Insightful and has determined that this outcome is in the best interests of our stockholders,” said Jeff Coombs, President and CEO of Insightful Corporation. “Insightful’s board of directors is pleased that the innovation and hard work of our employees has been validated and will be extended by the technology portfolio, domain expertise and market presence of TIBCO.”

“This merger is exciting news for Insightful customers,” said Christopher Ahlberg, President of Spotfire, TIBCO’s enterprise analytics division. “We are excited to complement their use of Insightful products with TIBCO’s portfolio for business optimization, including the Spotfire Enterprise Analytics platform, and to help them disseminate statistical expertise more pervasively.”

After the closing, Insightful will become a wholly-owned subsidiary of TIBCO and Insightful stock will cease trading.

RBC Capital Markets Corporation acted as exclusive financial advisor to Insightful. Fenwick & West LLP acted as legal advisor to Insightful.

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