[Form 4] Qualys, Inc. Insider Trading Activity

Rhea-AI Filing Summary

John A. Zangardi, a director of Qualys, Inc. (QLYS), reported the sale of 3,860 shares of the issuer's common stock on 08/22/2025. The filing shows the sale code "S" with a weighted average sale price of $134.8197, and an indicated price range of $134.575 to $135.12 per share. After the reported transaction the filing lists 7,174 shares beneficially owned directly and an indirect holding of 5 shares attributed to his son. The Form 4 was signed by Bruce Posey by power of attorney on 08/25/2025. This report is a Section 16 disclosure of insider selling and provides the weighted average price range for the shares sold.

Positive

• Timely Section 16 disclosure of insider sale filed for transparency
• Sale price range disclosed (weighted average $134.8197; range $134.575–$135.12) allowing precise record

Negative

• Insider sold shares (3,860 shares), reducing direct ownership
• Filing provides no stated reason for the sale or indication of a Rule 10b5-1 plan

Insights

Financial Analyst

TL;DR: Director sale of 3,860 shares reported at a weighted average near $134.82; filing discloses post-sale holdings.

The Form 4 documents an insider sale rather than an acquisition, specifying 3,860 shares sold on 08/22/2025 at a weighted average price of $134.8197, with the sale prices ranging from $134.575 to $135.12. The reporting person remains a holder of 7,174 shares directly and 5 shares indirectly via a family member. This is a standard Section 16 disclosure that updates outstanding insider ownership; the filing does not provide rationale, scheduled plan information, or any derivative transactions.

Corporate Governance Expert

TL;DR: Proper insider disclosure filed; sale executed and reported via a signed Form 4 with POA signature.

The Form 4 is completed to show compliance with Section 16 reporting obligations: the reporting person is identified as a director, the transaction date and sale details are provided, and the form bears a power-of-attorney signature dated 08/25/2025. The filing includes an explanatory note on the weighted average price band. There are no amendments or derivative security disclosures in this filing.

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
Estimated average burden
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)
08/22/2025

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	08/22/2025		S		3,860	D	$134.8197(1)	7,174	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 $134.575 to $135.12 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	08/25/2025
	** 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 Qualys director John A. Zangardi report on Form 4 (QLYS)?

The Form 4 reports a sale of 3,860 shares of Qualys common stock on 08/22/2025.

At what price were the QLYS shares sold by the director?

The sale shows a weighted average price of $134.8197 with individual sale prices ranging from $134.575 to $135.12.

How many Qualys shares does the reporting person beneficially own after the sale?

The filing lists 7,174 shares beneficially owned directly after the reported transaction and 5 shares indirectly via his son.

When was the Form 4 signed and by whom?

The Form 4 was signed on 08/25/2025 by Bruce Posey by power of attorney for the reporting person.

Does the Form 4 indicate this sale was made under a trading plan (Rule 10b5-1)?

The Form 4 does not indicate that the transaction was made pursuant to a Rule 10b5-1 trading plan.