Qualys Announces IPO

Redwood City, Calif., September 27, 2012 – Qualys, Inc. (NASDAQ: QLYS), a pioneer and leading provider of cloud security and compliance solutions, today announced the pricing of its initial public offering of 7,575,000 shares of its common stock at a price to the public of $12.00 per share. Qualys is offering 6,700,000 shares of common stock and certain selling stockholders are offering 875,000 shares of common stock. In addition, Qualys has granted the underwriters a 30-day option to purchase up to 1,136,250 additional shares of common stock offered by Qualys at the initial public offering price to cover over-allotments, if any. The shares are expected to begin trading on the NASDAQ Stock Market on September 28, 2012 under the symbol "QLYS."

J.P. Morgan Securities LLC and Credit Suisse Securities (USA) LLC are acting as joint book running managers for the offering, and RBC Capital Markets, LLC, Pacific Crest Securities LLC, Robert W. Baird & Co. Incorporated, JUMP Securities LLC, Lazard Capital Markets LLC and First Analysis Securities Corporation are acting as co-managers for the offering.

A registration statement relating to these securities has been filed with, and declared effective by, the Securities and Exchange Commission. The offering is being made only by means of a prospectus. A copy of the final prospectus relating to the offering may be obtained from: J.P. Morgan Securities LLC, Attention: Broad ridge Financial Solutions, 1155 Long Island Avenue, Edgewood, New York 11717, Phone: (866) 803-9204; or Credit Suisse Securities (USA) LLC, Attention: Prospectus Department, One Madison Avenue, New York, New York 10010, Phone: (800) 221-1037 or newyork.prospectus@credit-suisse.com.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

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Qualys Backgrounder – Company Fast Facts

Industry: Cloud Security

Founded: 1999

Founder & CEO: Philippe Courted

CFO: Don McCauley

Headquarters: Redwood City, Calif.

Offices Worldwide: 12

Employees: 300+

Customers: 5,700+

Countries: 100

2011 Revenues: $76.2 million

Company Overview

Qualys is a provider of cloud security and compliance solutions that enable organizations to identify security risks to their IT infrastructures, help protect their IT systems and applications from ever-evolving cyber-attacks and achieve compliance with internal policies and external regulations. Qualys' flagship product, QualysGuard Cloud Platform, is currently used by more than 5,700 organizations in more than 100 countries, including a majority of each of the Forbes Global 100 and Fortune 100.

Market Overview

IT infrastructures are rapidly evolving to take advantage of new technology trends, such as increasing adoption of cloud computing, broader usage of virtualization and increasing workforce mobility. However, as IT infrastructures evolve into more complex combinations of on-premise products and cloud solutions delivered globally through a wide range of devices and applications, these technologies also present new security and compliance challenges. These include struggles to effectively secure evolving IT environments, costly regulatory and compliance requirements and security concerns surrounding cloud applications and services adoption.

About Philippe Courtot, CEO & Founder

As CEO of Qualys, Philippe received the SC Magazine Editor's Award in 2004 for bringing on demand technology to the network security industry and for co-founding the CSO Interchange to provide a forum for sharing information in the security industry. He was also named the 2011 CEO of the Year by SC Magazine Awards Europe. He is a member of the board of directors for StopBadware.org and TechAmerica, and in 2012, he launched the Trustworthy Internet Movement, a nonprofit, vendor-neutral organization committed to resolving the problems of Internet security, privacy and reliability.

Before joining Qualys, Philippe was the Chairman and CEO of Signio, an electronic payment start-up that he repositioned to become a significant e-commerce player. In February 2000, VeriSign acquired Signio for more than a billion dollars. Prior to Signio, Philippe was President and CEO of Verity, where under his direction the company completed its initial public offering in November 1995. Philippe also turned an unknown company of 12 people, cc:Mail, into the dominant e-mail platform provider, achieving a 40% market share while competing directly against IBM and Microsoft. Lotus acquired the company in 1991. In 1986, as CEO of Thomson CGR Medical, a medical imaging company, Philippe received the Benjamin Franklin award for his role in the creation of a nationwide advertising campaign promoting the life-saving benefits of mammography. Philippe served on the Board of Trustees for The Internet Society, an international non-profit organization that fosters global cooperation and coordination on the development of the Internet. French and Basque born, he holds a master's degree in physics from the University of Paris, came to the US in 1981 and has lived in Silicon Valley since 1987.