Acme Packet® (NASDAQ:APKT), the leader in session delivery network solutions, today announced the Company has been named to the Deloitte 2011 Technology Fast 500™, a ranking of the 500 fastest growing technology, media, telecommunications, life sciences and clean technology companies in North America. This represents the third year in a row that Acme Packet has made the list. “Acme Packet’s growth reflects our ability to provide solutions that enable trusted, first-class delivery of Internet-based voice, video and unified communications,” said Andy Ory, president and co-founder, Acme Packet. “Our customers realize the tremendous value associated with the ability to leverage secure, reliable, and enhanced Internet-based communications. We’re pleased our success has been recognized by Deloitte as one of the Technology Fast 500.” “Acme Packet, like all 2011 Technology Fast 500 companies, has excelled in fostering innovation and channeling it into spectacular growth – against the backdrop of one of the most challenging economies in history,” said Eric Openshaw, vice chairman and U.S. technology, media and telecommunications leader, Deloitte LLP. "Deloitte recognizes Acme Packet for its remarkable accomplishment.” “We are pleased to honor Acme Packet as a 2011 Technology Fast 500 company,” said Mark Jensen, managing partner, technology and venture capital services, Deloitte & Touche LLP. “As one of the fastest growing tech companies in North America, Acme Packet has demonstrated excellence in technological innovation, entrepreneurship and rapid growth.” About Acme Packet Acme Packet (NASDAQ: APKT), the leader in session delivery network solutions, enables the trusted, first-class delivery of next-generation voice, data and unified communications services and applications across IP networks. Our Net-Net product family fulfills demanding security, service assurance and regulatory requirements in service provider, enterprise and contact center networks. Based in Bedford, Massachusetts, Acme Packet designs and manufactures its products in the USA, selling them through over 200 reseller partners worldwide. More than 1,525 customers in 107 countries have deployed over 14,000 Acme Packet systems, including 90 of the top 100 service providers and 36 of the Fortune 100. For more information visit www.acmepacket.com. Acme Packet, Inc. Safe Harbor Statement Statements contained herein that are not historical fact (including those in the section “Company Reaffirms Business Outlook for 2011”) may be forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Such forward-looking statements may relate to, among other things, expected financial and operating results, expected growth rates, future stock-based compensation and amortization expenses, future business prospects and market conditions. Such forward-looking statements do not constitute guarantees of future performance and are subject to a variety of risks and uncertainties that could cause actual results to differ materially from those anticipated. These include, but are not limited to: the amount of stock-based compensation awarded; the applicable Company stock price used to determine stock-based compensation; the exercise pattern of employee stock options; difficulties expanding the Company’s customer base; difficulties leveraging market opportunities; difficulties providing solutions that meet the needs of customers; poor product sales; long sales cycles; difficulties developing new products; difficulties in relationships with vendors and partners; higher risks in international operations; difficulties managing rapid growth; difficulties managing the Company’s financial performance; the ability to hire and retain employees and appropriately staff operations; the Company’s cash needs; the impact of new accounting pronouncements and increased competition. Additional factors that could cause actual results to differ materially from those projected or suggested in any forward-looking statements are contained in the Company’s recent filings with the Securities and Exchange Commission, including those factors discussed under the caption “Risk Factors” in such filings.