SAN CARLOS, CA — October 31, 2008 — Mark Logic Corporation, a leading provider of infrastructure software for information applications, today announced that it has been named to Deloitte's Technology Fast 50 Program for Silicon Valley Software and Information Technology (IT) companies. Mark Logic's increase in revenues of 15,554 percent from fiscal year 2003 to 2007 resulted in a fourth ranking in the Technology Fast 50 for Silicon Valley.

This year’s Silicon Valley Technology Fast 50 program is co-presented by Deloitte, Silicon Valley Bank, Korn/Ferry International, Cooley Godward Kronish LLP, Cornish & Carey Client Solutions, and ABD Insurance and Financial Services – A Wells Fargo Company. Rankings are based on the percentage revenue growth over five years from fiscal year 2003–2007. The average increase in revenues among companies that made the Technology Fast 50 for this region was 3,049 percent.

Mark Logic CEO Dave Kellogg attributes new markets and channels with the company's impressive revenue growth from fiscal year 2003–2007. Kellogg said, “We have kept a strong focus on expanding our presence within the strategic industries of Information & Media and government, and on fueling new growth initiatives including international, OEMs and new vertical market development. We believe the market potential for XML servers is still largely untapped and Mark Logic is uniquely positioned to continue to thrive.”

“Sustaining high revenue growth over five years is an exceptional accomplishment,” said Mark Jensen, Managing Partner, National Venture Capital Services, Deloitte & Touche LLP, in Silicon Valley. “We commend Mark Logic Corporation for making the commitment to technology and delivering on the promise of market longevity. We are proud to honor Mark Logic to Deloitte’s Technology Fast 50.”

To qualify for the Technology Fast 50, companies must have had operating revenues of at least $50,000 in fiscal year 2003 and $5,000,000 in fiscal year 2007, be headquartered in the San Francisco Bay Area, and be a company that owns proprietary technology or proprietary intellectual property that contributes to a significant portion of the company's operating revenues; or devotes a significant proportion of revenues to the research and development of technology. Using other companies' technology or intellectual property in a unique way does not qualify.

Companies from the regional Technology Fast 50 programs in the United States and Canada are automatically entered in Deloitte’s Technology Fast 500 program, which ranks North America’s top 500 fastest growing technology, media, telecommunications and life sciences companies. For more information on Deloitte’s Technology Fast 50 or Technology Fast 500 programs, visit www.fast500.com.

About Deloitte

As used in this document, “Deloitte” means Deloitte LLP. Please see www.deloitte.com/about/ for a detailed description of the legal structure of Deloitte LLP and its subsidiaries.

About Mark Logic Corporation

Mark Logic Corporation is a leading provider of information infrastructure software, serving industries including media, government, financial services, healthcare, and others. The company's flagship product, MarkLogic Server, is used by customers to enable a wide variety of information applications including custom publishing, search-based applications, content analytics, unified information access, metadata catalogs, and threat intelligence systems. MarkLogic Server is based on patented innovations and provides state-of-the-art features including location awareness, real-time search, and a shared-nothing cluster architecture that supports high performance against petabyte-scale databases. Mark Logic is headquartered in San Carlos, California with field offices in New York, Washington, London, Boston, Austin, and Frankfurt. The company is privately held with investors Sequoia Capital and Tenaya Capital. For more information, to download a trial version, or to read the award-winning Kellblog, written by Mark Logic CEO Dave Kellogg, go to www.marklogic.com.