X0306 4 2017-11-27 0 0001107843 QUALYS, INC. QLYS 0001279949 BERGERON SANDRA E. C/O QUALYS, INC. 1600 BRIDGE PARKWAY REDWOOD CITY CA 94065 1 0 0 0 Common Stock 2017-11-27 4 S 0 41987 59.7927 D 8013 I See Footnote Common Stock 2017-11-27 4 S 0 7360 60.7757 D 653 I See Footnote Common Stock 2017-11-28 4 S 0 653 59.60 D 0 I See Footnote Common Stock 2017-11-28 4 S 0 70000 60.4918 D 20000 I See Footnote Common Stock 33655 D The sale price represents the weighted average price of the shares sold ranging from $59.50 to $60.45 per share. Upon request by the Commission staff, the Issuer or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4. Shares held directly by DGB Investment Inc., an investment company solely owned by the spouse of the Reporting Person. The Reporting Person disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or any other purpose. The sale price represents the weighted average price of the shares sold ranging from $60.50 to $61.30 per share. Upon request by the Commission staff, the Issuer or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4. The sale price represents the weighted average price of the shares sold ranging from $60.00 to $60.88 per share. Upon request by the Commission staff, the Issuer or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4. Shares held directly by the Bergeron Family Trust dtd 11/15/2004 for which the Reporting Person serves as trustee. /s/ Bruce Posey by power of attorney 2017-11-29