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Proofpoint Announces Lock-Up Agreements to Expire on November 12, 2012

SUNNYVALE, CA--(Marketwire - Oct 5, 2012) - Proofpoint, Inc. ( NASDAQ : PFPT ), a leading provider of security-as-a-service solutions, today announced that based upon the announcement that its financial results for the third quarter ended September 30, 2012 will be released after the close of the market on October 25, 2012, and pursuant to the original terms of the lock-up agreements between its stockholders and the underwriters of the initial public offering, these lock-up agreements are now set to expire at the open of the market on November 12, 2012.

About Proofpoint, Inc.
Proofpoint Inc. ( NASDAQ : PFPT ) is a leading security-as-a-service provider that focuses on cloud-based solutions for threat protection, compliance, archiving & governance and secure communications. Organizations around the world depend on Proofpoint's expertise, patented technologies and on-demand delivery system to protect against phishing, malware and spam, safeguard privacy, encrypt sensitive information, and archive and govern messages and critical enterprise information. More information is available at www.proofpoint.com.

Proofpoint is a trademark or registered trademark of Proofpoint, Inc. in the U.S. and other countries. All other trademarks contained herein are the property of their respective owners.