UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE

SECURITIES EXCHANGE ACT OF 1934

Filed by the Registrant ☒

Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐	Preliminary Proxy Statement

☐	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

☒	Definitive Proxy Statement

☐	Definitive Additional Materials

☐	Soliciting Material Pursuant to §240.14a-2

QUALYS, INC.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than Registrant)

Payment of Filing Fee (Check all boxes that apply):

☒	No fee required.

☐	Fee paid previously with preliminary materials.

☐	Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

QUALYS, INC.

919 East Hillsdale Boulevard, 4^th Floor

Foster City, California 94404

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

To Be Held at 11:00 a.m. Pacific Daylight Time on Wednesday, June 11, 2025

TO THE HOLDERS OF COMMON STOCK

OF QUALYS, INC.:

The 2025 Annual Meeting of Stockholders of Qualys, Inc., a Delaware corporation, will be held online on Wednesday, June 11, 2025, at 11:00 a.m. Pacific Daylight Time.

Stockholders may participate in the meeting only by logging in at:

www.virtualshareholdermeeting.com/QLYS2025

Stockholders will be able to listen to the meeting live, vote and submit questions. There will be no

physical location for stockholders to attend the meeting.

The annual meeting will be held for the following purposes as more fully described in the accompanying proxy statement:

1.	To elect the two Class I directors named in this proxy statement to serve until the 2028 annual meeting of stockholders or until their successors are duly elected and qualified;

2.	To ratify the appointment of Grant Thornton LLP as our independent registered public accounting firm for our fiscal year ending December 31, 2025;

3.	To approve, on an advisory and non-binding basis, the compensation of our named executive officers as described in this proxy statement;

4.	To approve an amendment of our Amended and Restated Certificate of Incorporation to permit the exculpation of certain officers; and

5.	To transact such other business as may properly come before the meeting or any adjournments or postponements thereof.

The board of directors of Qualys, Inc. has fixed the close of business on April 15, 2025 as the record date for the meeting. Only stockholders of record of our common stock on April 15, 2025 are entitled to notice of and to vote at the meeting. Further information regarding voting rights and the matters to be voted upon is presented in the accompanying proxy statement.

On or about April 23, 2025, we expect to mail to our stockholders a Notice of Internet Availability of Proxy Materials (the “Notice”) containing instructions on how to access the proxy statement for the 2025 annual meeting and our 2024 annual report to stockholders. The Notice provides instructions on how to vote online or by telephone and includes instructions on how to receive a paper copy of proxy materials by mail. The proxy statement and our annual report can also be accessed directly at www.proxyvote.com. All you have to do is enter the control number located on the Notice or your proxy card.

YOUR VOTE IS IMPORTANT. Whether or not you plan to participate in the annual meeting, we urge you to submit your vote via the Internet, telephone or mail in advance of the meeting. If you plan to participate in the annual meeting, please see the instructions in the accompanying proxy statement.

We appreciate your continued support of Qualys, Inc.


			By order of the Board of Directors,

			/s/ Sumedh S. Thakar
			Sumedh S. Thakar
			Director, President and Chief Executive Officer
			Foster City, California
			April 23, 2025

PROXY STATEMENT

FOR ANNUAL MEETING OF STOCKHOLDERS

to be held on Wednesday, June 11, 2025 at 11:00 a.m. Pacific Daylight Time

This proxy statement and the enclosed form of proxy are furnished in connection with the solicitation of proxies by the board of directors of Qualys, Inc. (“we,” “Qualys,” or the “Company”) for use at our annual meeting of stockholders (the “Annual Meeting”) to be held on June 11, 2025, at 11:00 a.m. Pacific Daylight Time, and any postponements, adjournments or continuations thereof. The Annual Meeting will be held online at www.virtualshareholdermeeting.com/QLYS2025, where stockholders will be able to listen to the meeting live, vote and submit questions. There will be no physical location for stockholders to attend the meeting.

On or about April 23, 2025, we expect to mail to our stockholders a Notice of Internet Availability of Proxy Materials (the “Notice”) containing instructions on how to access this proxy statement and our 2024 annual report to stockholders.

The information provided in the “question and answer” format below is for your convenience only and is merely a summary of the information contained in this proxy statement. You should read this entire proxy statement carefully.

How can I participate in the Annual Meeting?

To participate in the Annual Meeting, visit www.virtualshareholdermeeting.com/QLYS2025 and enter your control number as indicated. You can find your control number on your Notice, proxy card (if you received a printed copy of the proxy materials) or the instructions that accompanied your proxy materials. You will be able to log into the virtual meeting platform beginning at 10:45 a.m. Pacific Daylight Time on June 11, 2025. The meeting will begin promptly at 11:00 a.m. Pacific Daylight Time on June 11, 2025. We encourage you to log into the virtual meeting platform and ensure you can hear streaming audio prior to the meeting start time.

The virtual meeting platform is supported across browsers (Internet Explorer, Microsoft Edge, Firefox, Chrome, and Safari) and devices (desktops, laptops, tablets, and cell phones) running the most updated version of applicable software and plugins. Participants should ensure that they have a strong WiFi connection wherever they intend to participate in the meeting.

If you wish to submit a question during the meeting, log into the virtual meeting platform, type your question into the “Ask a Question” field, and click “Submit.” Questions pertinent to meeting matters will be answered during the meeting, subject to time constraints. Questions regarding personal matters, including those related to employment, product or service issues, or suggestions for product innovations, should be addressed to the appropriate party on the qualys.com website; these questions are not pertinent to meeting matters and, therefore, will not be answered at the Annual Meeting. If we receive substantially similar questions, we may group such questions together and provide a single response to avoid repetition.

If you encounter any difficulties accessing the meeting, please call the technical support number that will be posted on the virtual meeting platform’s log in page.

Other stockholders and members of the public can also access the Annual Meeting at the URL above without a control number, but without the right to vote or submit a question.

Why did I receive a notice regarding the availability of proxy materials on the Internet instead of a full set of proxy materials?

In accordance with the rules of the Securities and Exchange Commission (“SEC”), we have elected to furnish our proxy materials, including this proxy statement and our 2024 annual report to stockholders, primarily via the Internet. On or about April 23, 2025, we expect to mail to our stockholders the Notice, which contains instructions on how to access our proxy materials on the Internet, vote at the meeting, and request printed copies of the proxy materials. Stockholders may request to receive all future proxy materials in printed form by mail or electronically by e-mail by following the instructions contained in the Notice. We encourage stockholders to take advantage of the availability of the proxy materials on the Internet to help reduce the environmental impact of our annual meetings.

What matters am I voting on?

You will be voting on:

•	the election of the two Class I directors named in this proxy statement to hold office until the 2028 annual meeting of stockholders or until their successors are duly elected and qualified;

•	a proposal to ratify the appointment of Grant Thornton LLP as our independent registered public accounting firm for our fiscal year ending December 31, 2025;

•	a proposal to approve, on an advisory and non-binding basis, the compensation of our named executive officers as described in this proxy statement;

•	a proposal to approve an amendment of our Amended and Restated Certificate of Incorporation to permit the exculpation of certain officers; and

•	any other business that may properly come before the meeting.

How does the board of directors recommend I vote on these proposals?

Our board of directors recommends a vote:

•	FOR each of the nominees named in this proxy statement for election as Class I directors;

•	FOR the ratification of the appointment of Grant Thornton LLP as our independent registered public accounting firm for our fiscal year ending December 31, 2025;

•	FOR the compensation of our named executive officers as described in this proxy statement; and

•	FOR the approval of an amendment of our Amended and Restated Certificate of Incorporation to permit the exculpation of certain officers.

Who is entitled to vote?

Holders of our common stock as of the close of business on April 15, 2025, the record date, may vote at the Annual Meeting. As of the record date, we had 36,353,741 shares of common stock outstanding. In deciding all matters at the Annual Meeting, each stockholder will be entitled to one vote for each share of common stock held on the record date. We do not have cumulative voting rights for the election of directors. A list of stockholders entitled to vote at the Annual Meeting will be made

available for the examination of any stockholder for any purpose germane to the meeting for ten days prior to the Annual Meeting by email request to ir@qualys.com. The list will also be available for examination online during the meeting at www.virtualshareholdermeeting.com/QLYS2025.

Stockholders of Record. If your shares are registered directly in your name with our transfer agent, you are considered the stockholder of record with respect to those shares, and the Notice was provided to you directly by us. As the stockholder of record, you have the right to grant your voting proxy directly to the individuals listed on the proxy card or to vote live at the Annual Meeting.

Beneficial Owners. If your shares are held in a stock brokerage account or by a bank or other nominee, you are considered the beneficial owner of shares held in street name, and the Notice was forwarded to you by your broker or nominee, who is considered the stockholder of record with respect to those shares. As the beneficial owner, you have the right to direct your broker or nominee how to vote your shares. Beneficial owners are also invited to attend the Annual Meeting. However, because a beneficial owner is not the stockholder of record, you may not vote your shares live at the Annual Meeting unless you follow your broker’s procedures for obtaining a legal proxy. If you request a printed copy of the proxy materials by mail, your broker or nominee will provide a voting instruction card for you to use.

How do I vote?

Stockholders of Record. If you are a stockholder of record, there are several ways for you to vote your shares:

•

Via the Internet—Before the Annual Meeting. You may vote at www.proxyvote.com, 24 hours a day, seven days a week, until 11:59 p.m. Eastern Daylight Time on June 10, 2025. You will need the control number included on your Notice or your proxy card (if you received a printed copy of the proxy materials).

•

Via the Internet—During the Annual Meeting. You may vote live at the Annual Meeting through the virtual meeting platform by logging into www.virtualshareholdermeeting.com/QLYS2025. You will need the control number included on your Notice or your proxy card (if you received a printed copy of the proxy materials).

•

By Telephone. You may vote using a touch-tone telephone by calling 1-800-690-6903, 24 hours a day, seven days a week, until 11:59 p.m. Eastern Daylight Time on June 10, 2025. You will need the control number included on your Notice or your proxy card (if you received a printed copy of the proxy materials).

•

By Mail. If you received printed proxy materials, you may submit your vote by completing, signing and dating each proxy card received and returning it in the prepaid envelope. Sign your name exactly as it appears on the proxy card. Proxy cards submitted by mail must be received no later than June 10, 2025, to be voted at the Annual Meeting.

Beneficial Owners. If you are a beneficial owner, you should have received a Notice or voting instructions from the broker or other nominee holding your shares. You should follow the instructions in the Notice or voting instructions provided by your broker or nominee in order to instruct your broker or other nominee on how to vote your shares. The availability of telephone and Internet voting will depend on the voting process of the broker or nominee.

Can I change my vote?

Stockholders of Record. If you are a stockholder of record, you can change your vote or revoke your proxy any time before the Annual Meeting by:

•	entering a new vote by Internet or by telephone (only your latest Internet or telephone proxy received by 11:59 p.m. Eastern Daylight Time on June 10, 2025, will be counted);

•	signing and returning a new proxy card with a later date to Qualys, Inc., Attention: Corporate Secretary, 919 East Hillsdale Blvd., 4^th Floor, Foster City, California 94404, to be received no later than June 10, 2025;

•	delivering a written revocation to Qualys, Inc., Attention: Corporate Secretary, 919 East Hillsdale Blvd., 4^th Floor, Foster City, California 94404, to be received no later than June 10, 2025; or

•	participating in the Annual Meeting live via the Internet and voting again.

Beneficial Owners. If you are a beneficial owner, you must contact the broker or other nominee holding your shares and follow their instructions for changing your vote or revoking your proxy.

What is the effect of giving a proxy?

Proxies are solicited by and on behalf of our board of directors. The persons named in the proxy have been designated as proxies by our board of directors. When proxies are properly dated, executed and returned, the shares represented by such proxies will be voted at the Annual Meeting in accordance with the instruction of the stockholder. If no specific instructions are given, however, the shares will be voted in accordance with the recommendations of our board of directors as described above. If any matters not described in the proxy statement are properly presented at the Annual Meeting, the proxy holders will use their own judgment to determine how to vote your shares. If the Annual Meeting is adjourned, the proxy holders can vote your shares on the new meeting date as well, unless you have properly revoked your proxy instructions, as described above.

What is a quorum?

A quorum is the minimum number of shares required to be present at a meeting of stockholders for action to be taken at the meeting. Under our bylaws, the presence, live or represented by proxy (including any abstentions and “broker non-votes”), of a majority of all issued and outstanding shares of common stock entitled to vote at the Annual Meeting will constitute a quorum at the meeting.

What are “broker non-votes”?

When a broker, bank or other nominee votes a client’s shares on some but not all of the proposals, the missing votes are referred to as “broker non-votes.” If you are a beneficial owner and do not provide timely voting instructions to your bank, broker or other nominee, that organization will have discretion to vote your shares on our sole “routine” matter—Proposal No. 2 to ratify the appointment of Grant Thornton LLP. The election of directors, the advisory vote to approve executive compensation, and the amendment of our Amended and Restated Certificate of Incorporation to permit the exculpation of certain officers are non-discretionary items and may not be voted on by brokers, banks or other nominees who have not received specific voting instructions from beneficial owners. Therefore, broker non-votes may exist in connection with Proposals No. 1, No. 3 and No. 4.

How many votes are needed for approval of each matter?

•

Proposal No. 1: The election of directors requires a plurality of the votes cast at the meeting, meaning that the individuals who receive the largest number of votes cast “for” their election are elected as directors. As a result, any shares not voted “for” a particular nominee (whether as a result of “withhold” votes or broker non-votes) will not be counted in such nominee’s favor and will have no effect on the outcome of the election. You may vote “for” or “withhold” on each of the nominees for election as a director.

•

Proposal No. 2: The ratification of the appointment of Grant Thornton LLP must receive the affirmative vote of a majority of the shares present virtually or by proxy during the meeting and entitled to vote thereon to be approved. You may vote “for,” “against” or “abstain” on this proposal. Abstentions represent shares present and entitled to vote and thus, will have the same effect as votes “against” this proposal.

•

Proposal No. 3: The approval, on an advisory and non-binding basis, of the compensation of our named executive officers as described in this proxy statement must receive the affirmative vote of a majority of the shares present virtually or by proxy during the meeting and entitled to vote thereon to be approved. You may vote “for,” “against” or “abstain” on this proposal. Abstentions represent shares present and entitled to vote and thus, will have the same effect as votes “against” this proposal. Broker non-votes will have no effect on the outcome of this proposal because they represent shares that are not entitled to vote on the matter.

•

Proposal No. 4: The approval of an amendment to our Amended and Restated Certificate of Incorporation to permit the exculpation of certain officers must receive the affirmative vote of a majority of the voting power of the outstanding shares of capital stock of the Company, entitled to vote thereon. You may vote “for,” “against” or “abstain” on this proposal. Abstentions and broker non-votes will be counted for purposes of determining the presence or absence of a quorum and will also count as votes against this proposal, i.e., will have the same effect as a vote AGAINST this proposal.

How are proxies solicited for the Annual Meeting?

Our board of directors is soliciting proxies for use at the Annual Meeting. All expenses associated with this solicitation will be borne by us. We will reimburse brokers or other nominees for reasonable expenses that they incur in sending these proxy materials to you if a broker or other nominee holds your shares.

Is my vote confidential?

Proxy instructions, ballots, and voting tabulations that identify individual stockholders are handled in a manner that protects your voting privacy. Your vote will not be disclosed either within Qualys, Inc. or to third parties, except as necessary to meet applicable legal requirements, to allow for the tabulation of votes and certification of the vote, or to facilitate a successful proxy solicitation.

Where can I find the voting results of the Annual Meeting?

We will announce preliminary voting results at the Annual Meeting. We will also disclose voting results on a Current Report on Form 8-K that we will file with the SEC within four business days after the Annual Meeting. If final voting results are not available to us in time to file a Current Report on Form 8-K, we will file a Current Report on Form 8-K to publish preliminary results and will provide the final results in an amendment to the Form 8-K as soon as they become available.

I share an address with another stockholder, and we received only one paper copy of the proxy materials. How may I obtain an additional copy of the proxy materials?

We have adopted a procedure called “householding,” which the SEC has approved. Under this procedure, we deliver a single copy of the Notice and, if applicable, the proxy materials to multiple stockholders who share the same address unless we received contrary instructions from one or more of the stockholders. This procedure reduces our printing costs, mailing costs, and fees. Stockholders who participate in householding will continue to be able to access and receive separate proxy cards. Upon written or oral request, we will deliver promptly a separate copy of the Notice and, if applicable, the proxy materials to any stockholder at a shared address to which we delivered a single copy of any of these documents. To receive a separate copy, or, if you are receiving multiple copies, to request that Qualys only send a single copy, of the Notice and, if applicable, the proxy materials, stockholders may contact us as follows:

Qualys, Inc.

Attention: Investor Relations

919 East Hillsdale Boulevard, 4^th Floor

Foster City, California 94404

(650) 801-6100

ir@qualys.com

Stockholders who hold shares in street name may contact their brokerage firm, bank, broker-dealer or other similar organization to request information about householding.

What is the deadline to propose actions for consideration at next year’s annual meeting of stockholders or to nominate individuals to serve as directors?

Stockholder Proposals

Stockholders may present proper proposals for inclusion in our proxy statement and for consideration at the next annual meeting of stockholders by submitting their proposals in writing to our Corporate Secretary in a timely manner. For a stockholder proposal to be considered for inclusion in our proxy statement for our 2026 annual meeting of stockholders, our Corporate Secretary must receive the written proposal at our principal executive offices not later than December 24, 2025. In addition, stockholder proposals must comply with the requirements of Rule 14a-8 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”) regarding the inclusion of stockholder proposals in company-sponsored proxy materials. Proposals should be addressed to:

Qualys, Inc.

Attention: Corporate Secretary

919 East Hillsdale Boulevard, 4^th Floor

Foster City, California 94404

Our bylaws also establish an advance notice procedure for stockholders who wish to present a proposal before an annual meeting of stockholders but do not intend for the proposal to be included in our proxy statement for that meeting. Our bylaws provide that the only business that may be conducted at an annual meeting is business that is (i) specified in our proxy materials with respect to such meeting, (ii) otherwise properly brought before the meeting by or at the direction of our board of directors, or (iii) properly brought before the meeting by a stockholder who (A) is a stockholder of record at the time of giving the required notice and on the record date for the determination of stockholders entitled to vote at the annual meeting and (B) has delivered timely written notice to our Corporate Secretary, which notice must contain the information specified in our bylaws. To be timely for our 2026 annual meeting of stockholders, our Corporate Secretary must receive the written notice at our principal executive offices:

•	not earlier than 8:00 a.m. Eastern Time on February 11, 2026; and

•	not later than 5:00 p.m. Eastern Time on March 13, 2026.

SEC Form DEF 14A filed by Qualys Inc.