[Form 4] Qualys, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Qualys, Inc. (QLYS) director Thomas Berquist reported sales of company common stock on 09/02/2025 executed under a Rule 10b5-1 trading plan adopted February 19, 2025. The Form 4 discloses three sale transactions: 150 shares at a weighted average price of $132.1767, 325 shares at $133.4115, and 37 shares at $133.93. Following these dispositions, the reported beneficial ownership totals shown on the form decreased from prior levels to 5,454; then 5,129; then 5,092 shares as reflected on each reported line.

The filing was signed on behalf of Mr. Berquist by power of attorney on 09/03/2025. The Form 4 notes that the seller will provide detailed per-price share counts to the Commission upon request. No derivative transactions, grants, or acquisitions are reported in this filing.

Insights

Securities Analyst

TL;DR: Routine insider sales under a pre-established 10b5-1 plan; reduces holdings but appears procedural, not event-driven.

The reported transactions are disclosed as sales executed pursuant to a Rule 10b5-1 trading plan adopted on February 19, 2025, which typically provides an affirmative defense to insider trading claims by scheduling trades in advance. The sizes of the trades (totaling 512 shares) are modest relative to typical institutional holdings and no options or derivative activity are shown. The filing documents declining beneficial ownership across the reported lines and a POA signature, indicating administrative handling of the Form 4.

Corporate Governance Expert

TL;DR: Compliance-focused disclosure; 10b5-1 plan use and POA signature reflect governance controls.

The Form 4 provides clear disclosure that sales were executed under a pre-approved 10b5-1 trading plan, which aligns with good governance practices for insiders disposing of shares. The inclusion of weighted-average sale prices and an explicit offer to provide per-price share counts upon request demonstrates transparency. The filing does not indicate any acceleration, exemptions, or related-party transactions.

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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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^*

Berquist Thomas

(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)
09/02/2025

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	09/02/2025		S(1)		150	D	$132.1767(2)	5,454	D
Common Stock	09/02/2025		S(1)		325	D	$133.4115(3)	5,129	D
Common Stock	09/02/2025		S(1)		37	D	$133.93	5,092	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 19, 2025.

2. The sale price represents the weighted average price of the shares sold ranging from $131.55 to $132.50 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.

3. The sale price represents the weighted average price of the shares sold ranging from $132.93 to $133.78 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	09/03/2025
	** 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).
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