About Penton Media

As a leading, independent, business-to-business media company, Penton knows business and how to create and disseminate vital content that moves markets. Penton is where professionals turn to gain the critical insight, expert analysis and relevant connections needed to compete and succeed. Headquartered in New York City, the privately held company is owned by MidOcean Partners and U.S. Equity Partners II, an investment fund sponsored by Wasserstein & Co., LP, and its co-investors. For additional information on the company and its businesses, visit www.penton.com.

About Citrix

Citrix (NASDAQ:CTXS) transforms how businesses and IT work and people collaborate in the cloud era. With market-leading cloud, collaboration, networking and virtualization technologies, Citrix powers mobile workstyles and cloud services, making complex enterprise IT simpler and more accessible for 260,000 organizations. Citrix products touch 75 percent of Internet users each day and it partners with more than 10,000 companies in 100 countries. Annual revenue in 2011 was $2.21 billion. Learn more at www.citrix.com.

For Citrix Investors

This release contains forward-looking statements which are made pursuant to the safe harbor provisions of Section 27A of the Securities Act of 1933 and of Section 21E of the Securities Exchange Act of 1934. The forward-looking statements in this release, including statements concerning CloudStack and the Company’s markets, do not constitute guarantees of future performance. Those statements involve a number of factors that could cause actual results to differ materially, including risks associated with the future development of open source projects outside the Company’s control, the impact of the global economy and uncertainty in the IT spending environment, revenue growth and recognition of revenue, products and services, their development and distribution, product demand and pipeline, economic and competitive factors, the Company’s key strategic relationships, acquisition and related integration risks as well as other risks detailed in the Company’s filings with the Securities and Exchange Commission. Citrix assumes no obligation to update any forward-looking information contained in this press release or with respect to the announcements described herein.

###

Citrix®, NetScaler® and TriScale™ are trademarks or registered trademarks of Citrix Systems, Inc. and/or one or more of its subsidiaries, and may be registered in the U.S. Patent and Trademark Office and in other countries. All other trademarks and registered trademarks are property of their respective owners.