[Form 4] Qualys, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Wendy Pfeiffer, a director of Qualys, Inc. (QLYS), sold 200 shares of company common stock on 08/15/2025 at $129.72 per share. The Form 4 reports that after the sale she beneficially owned 11,082 shares, held directly. The filing states the sale was executed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 21, 2025. The Form 4 was submitted on 08/18/2025 and signed under power of attorney by Bruce Posey.

Positive

• Sale executed under a Rule 10b5-1 trading plan, indicating a pre-established, documented trading arrangement
• Complete post-transaction disclosure: the filing reports the transaction date, price, and that 11,082 shares remain beneficially owned
• Timely Form 4 submission with signature executed by power of attorney on 08/18/2025

Negative

• None.

Insights

Financial Analyst

TL;DR: Small director sale executed under a pre-established 10b5-1 plan; holdings remain disclosed.

The reported sale of 200 shares at $129.72 is explicitly described as occurring under a Rule 10b5-1 trading plan adopted on February 21, 2025. The transaction reduced direct holdings to 11,082 shares. This is a routine disclosure that documents compliance with insider-trading safe-harbor procedures rather than a material change to ownership. No derivative transactions or additional securities classes are reported.

Corporate Governance Expert

TL;DR: Disclosure shows proper use of a documented 10b5-1 plan and timely Form 4 reporting.

The Form 4 clearly states the sale was effected pursuant to a documented 10b5-1 plan, which supports procedural compliance with Section 16 reporting requirements. The filing includes the required details: transaction date, price, post-transaction beneficial ownership and a power-of-attorney signature. There are no indications of undisclosed related-party transactions or amendments 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).

X

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^*

Pfeiffer Wendy

(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)
08/15/2025

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	08/15/2025		S(1)		200	D	$129.72	11,082	D

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 transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 21, 2025.

	/s/ Bruce Posey, by power of attorney	08/18/2025
	** 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 insider transaction did Wendy Pfeiffer report for QLYS?

The Form 4 reports that Wendy Pfeiffer sold 200 shares of Qualys common stock on 08/15/2025 at a price of $129.72 per share.

Was the sale by the QLYS director part of a 10b5-1 trading plan?

Yes. The filing states the sale was effected pursuant to a Rule 10b5-1 trading plan adopted on February 21, 2025.

How many QLYS shares did the reporting person own after the reported sale?

Following the reported transaction, the reporting person beneficially owned 11,082 shares (direct ownership).

Who signed the Form 4 for Wendy Pfeiffer?

The Form 4 was signed under power of attorney by Bruce Posey on 08/18/2025.

Does the Form 4 report any derivative transactions or other securities?

No. The filing contains only a non-derivative sale of common stock; no derivative securities are reported in Table II.