METATOMIX NAMED ONE OF INC. MAGAZINE'S 5000 FASTEST GROWING PRIVATE COMPANIES IN AMERICA

Award Recognizes Tremendous Growth of Semantic Solutions Leader

Dedham, MA, September 5, 2007 — Metatomix Inc., a leading provider of semantic solutions to financial services, justice, manufacturing and life sciences organizations, today announced the company has been named to the Inc. 5000 list of the fastest growing private companies in the nation. The company ranked number 1535 on the list with an impressive three-year sales growth of 233.8 percent. In addition, Metatomix was ranked number 63 on the list of top companies in the Boston metro list.

"We're honored to be recognized by Inc. Magazine as one of the fastest growing companies," said Jeff Dickerson, CEO of Metatomix. "Our growth can be directly attributed to our partners, our solid customer base and the innovative solutions that we offer. We expect continued dramatic growth as we help companies put semantic technology to use in practical business applications."

The Inc. 5000, an extension of Inc. Magazine’s annual Inc. 500 list, recognizes many businesses that are too big to grow at the pace required to make the Inc. 500, as well as a host of smaller firms. This year’s Inc. 5000 rankings are based on revenue growth from 2003 through 2006.

For more information about the 2007 Inc. 5000 visit: www.inc.com/inc5000.

About Metatomix, Inc.
Founded in 2000, Metatomix (www.metatomix.com) is the leading provider of Semantic Middleware solutions to financial services, justice, manufacturing and life sciences organizations. Metatomix solutions integrate data and processes to create a common, contextual understanding across multiple enterprise systems. Using this new understanding in context, Metatomix solutions enable real-time analysis and insights, orchestrating coordinated responses among existing systems to optimize enterprise processes. For more information, visit the Metatomix Web site at http://www.metatomix.com.



For additional information contact:
Ronda Billings
Metatomix
781-907-6721
rbillings@metatomix.com