QUALYS INC

Securities Trading Plans of Directors and Executive Officers

On August 16, 2024, Jeffrey P. Hank, thechair of our board of directors, modified his existing Rule 10b5-1 trading arrangement dated November 21, 2023 (the “Original Plan”), which has the effect ofterminating the Original Plan andadopting a new Rule 10b5-1 trading arrangement (the “New Plan”). The New Plan provides for the sale from time to time of an aggregate of up to 8,850 shares of our common stock plus an additional number of shares to be acquired on the date of the Company's 2025 Annual Meeting of Stockholders. Pursuant to the Company's non-employee director compensation program, each non-employee director who has served on our board of directors for at least six months prior to such date will be granted an annual award of restricted stock units on such day. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the New Plan is until June 30, 2025, or earlier if all transactions under the trading arrangement are completed.

On August 21, 2024, Joo Mi Kim, our Chief Financial Officer, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 54,319 shares of our common stock, which represents the gross number of shares authorized to be sold during the duration of the plan, before excluding any shares withheld by the company to satisfy its income tax withholding in connection with the net settlement of the equity awards. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until November 20, 2025, or earlier if all transactions under the trading arrangement are completed.

On August 21, 2024, Bruce Posey, our Chief Legal Officer, adopted a Rule 10b5-1 trading arrangement providing for the sale from time to time of an aggregate of up to 54,586 shares of our common stock, which represents the gross number of shares authorized to be sold during the duration of the plan, before excluding any shares withheld by the company to satisfy its income tax withholding in connection with the net settlement of the equity awards. The trading arrangement is intended to satisfy the affirmative defense in Rule 10b5-1(c). The duration of the trading arrangement is until December 2, 2025, or earlier if all transactions under the trading arrangement are completed.

No other director or officer, as defined in Rule 16a-1(f), adopted orterminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” each as defined in Regulation S-K Item 408, during the three months ended September 30, 2024.