[Form 4] Qualys, Inc. Insider Trading Activity

Rhea-AI Filing Summary

John A. Zangardi, a director of Qualys, Inc. (QLYS), sold 3,103 shares of the company's common stock on 08/27/2025 at a weighted average price of $134.9405 per share, with individual sale prices ranging from $134.50 to $135.46. After the sale, Mr. Zangardi beneficially owned 4,071 shares directly and 5 shares indirectly through his son. The Form 4 was filed as an individual filing and signed under power of attorney by Bruce Posey on 08/29/2025.

Positive

• Filing contains full transaction details including sale quantity, weighted average price, price range, transaction date, and post-transaction ownership
• Reporting person remains a company insider (identified as a director), and retains ownership after the sale

Negative

• Insider sale disclosed: director sold 3,103 shares on 08/27/2025, which may be interpreted negatively by some investors

Insights

Securities Analyst

TL;DR: Director sold a modest block of shares; ownership remains small and largely unchanged.

The Form 4 shows a single non-derivative sale of 3,103 common shares by director John A. Zangardi on 08/27/2025 at a weighted average price of $134.9405 per share. Post-transaction beneficial ownership is 4,071 shares directly and 5 shares indirectly via his son, indicating the director retains a position but it is not large in absolute terms as disclosed. The filing was signed via power of attorney by Bruce Posey on 08/29/2025. For investors, this is a routine insider sale disclosure without additional context on intent or further transactions.

Corporate Governance Expert

TL;DR: Disclosure is complete for the reported transaction; no governance red flags in the form.

The Form 4 discloses the required details: reporting person identity, relationship (director), transaction date, transaction code (S for sale), number of shares sold (3,103), sale price range ($134.50–$135.46), and resulting beneficial ownership (4,071 direct, 5 indirect). The document is signed under power of attorney. There are no indications of coordinated filings or unusual reporting delays in the text provided. The filing meets Section 16 disclosure elements shown here.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Zangardi John A.

(Last) (First) (Middle)

C/O QUALYS, INC.

919 E. HILLSDALE BLVD.

(Street)

FOSTER CITY CA 94404

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
QUALYS, INC. [ QLYS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/27/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/27/2025		S		3,103	D	$134.9405(1)	4,071	D
Common Stock								5	I	By Son

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The sale price represents the weighted average price of the shares sold ranging from $134.50 to $135.46 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.

	/s/ Bruce Posey, by power of attorney	08/29/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What transaction did John A. Zangardi report on the Form 4 for QLYS?

The Form 4 reports a sale of 3,103 shares of Qualys common stock on 08/27/2025.

At what price were the QLYS shares sold in the Form 4 by the director?

The weighted average sale price was $134.9405 per share, with individual prices ranging from $134.50 to $135.46.

How many QLYS shares does the reporting person own after the reported transaction?

After the sale, the reporting person beneficially owned 4,071 shares directly and 5 shares indirectly through his son.

What is the reporting person's relationship to Qualys, Inc. on the Form 4?

The Form 4 lists the reporting person, John A. Zangardi, as a Director of Qualys, Inc.

When was the Form 4 signed and by whom?

The Form 4 was signed by Bruce Posey, by power of attorney on 08/29/2025.