Qualys CLO sells 866 shares under trading plan

Qualys’ Chief Legal Officer executed pre-planned open-market sales totaling 866 shares under a Rule 10b5-1 trading plan.

Available on EDGAR 09/22/2026 - 09:12 PM EDT Accepted by SEC EDGAR 09/22/2026 - 09:12 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

QUALYS, INC. (QLYS) reported that its Chief Legal Officer, Bruce K. Posey, sold a total of 866 shares of Qualys common stock on September 21, 2026 in a series of open-market transactions at prices around $175.54–$181.03 per share. These sales were effected pursuant to a Rule 10b5-1 trading plan adopted on August 21, 2025, meaning they were pre-arranged rather than discretionary trades based on current market conditions.

Insider Trade Summary 10b5-1

Net Seller: 866 shares

Net Sell 5 txns

Insider POSEY BRUCE K

Role CHIEF LEGAL OFFICER

Sold 866 shs ($155K)

Share of Position Sold 1.5%

Type	Security	Shares	Price	Value
Sale	Common Stock F1	72	$175.54	$13K
Sale	Common Stock F1, F2	27	$177.9833	$5K
Sale	Common Stock F1, F3	241	$178.9571	$43K
Sale	Common Stock F1, F4	327	$179.9499	$59K
Sale	Common Stock F1, F5	199	$181.0318	$36K

Holdings After Transaction: Common Stock — 58,688 shares (Direct)

Holdings Before and After: Common Stock, 59,554 to 58,688 shares (Direct)

Other Insiders: 3 other insiders reported open-market sales of this stock in the 30 days up to this filing.

Footnotes (5)

1. F1. The sale transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 21, 2025.
2. F2. The sale price represents the weighted average price of the shares sold ranging from $177.36 to $178.35 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. F3. The sale price represents the weighted average price of the shares sold ranging from $178.41 to $179.36 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.
4. F4. The sale price represents the weighted average price of the shares sold ranging from $179.61 to $180.55 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.
5. F5. The sale price represents the weighted average price of the shares sold ranging from $180.65 to $181.55 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.

Key Figures

Total shares sold: 866 shares Sale tranches: 72, 27, 241, 327, 199 shares Per-share sale price (first tranche): $175.54 per share +3 more

6 metrics

Total shares sold 866 shares Aggregate common stock sales by Chief Legal Officer on September 21, 2026

Sale tranches 72, 27, 241, 327, 199 shares Five separate open-market transactions on September 21, 2026

Per-share sale price (first tranche) $175.54 per share Sale of 72 shares of Qualys common stock on September 21, 2026

Weighted average price range (F2) $177.36–$178.35 per share Price range for trades underlying weighted-average price of $177.98

Weighted average price range (F5) $180.65–$181.55 per share Price range for trades underlying weighted-average price of $181.03

Rule 10b5-1 plan adoption date August 21, 2025 Adoption date of trading plan governing the reported sales

Key Terms

Rule 10b5-1 trading plan, weighted average price, open market, non-derivative

4 terms

Rule 10b5-1 trading plan regulatory

"The sale transaction ... was effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

weighted average price financial

"The sale price represents the weighted average price of the shares sold"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

open market market

"Sale in open market or private transaction"

An open market is a system where buying and selling of goods, services, or financial assets happen freely without restrictions or special controls. For investors, it means they can trade assets easily and quickly, which helps determine fair prices based on supply and demand. This environment encourages transparency and competition, making it easier to buy or sell with confidence.

non-derivative financial

"transaction_type: non-derivative for the common stock transactions"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did QLYS disclose for Bruce K. Posey on September 21, 2026?

Qualys disclosed that Chief Legal Officer Bruce K. Posey sold 866 shares of Qualys common stock on September 21, 2026 in a series of open-market transactions reported on Form 4.

At what prices were the QLYS shares sold by the Chief Legal Officer?

The reported sales occurred at per-share prices of $175.54, $177.98 (weighted average), $178.96 (weighted average), $179.95 (weighted average), and $181.03 (weighted average), with the weighted-average prices reflecting trades within specified price ranges.

How many Qualys (QLYS) shares did Bruce K. Posey sell in total?

Bruce K. Posey sold a total of 866 shares of Qualys common stock, consisting of blocks of 72, 27, 241, 327 and 199 shares, all on September 21, 2026.

Were the QLYS insider sales made under a Rule 10b5-1 trading plan?

Yes. The filing states that the sales were effected pursuant to a Rule 10b5-1 trading plan adopted by Bruce K. Posey on August 21, 2025, indicating the trades were pre-arranged under that plan.

What type of security did the Qualys (QLYS) insider sell?

All reported transactions involved Qualys common stock in non-derivative form, sold in open-market transactions on September 21, 2026.

How is the weighted average price described in the QLYS Form 4 footnotes?

For several tranches, the filing states the reported price is a weighted average of shares sold within ranges such as $177.36–$178.35, $178.41–$179.36, $179.61–$180.55, and $180.65–$181.55, with full per-trade detail available on request.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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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^*

POSEY BRUCE K

(Last) (First) (Middle)

C/O QUALYS, INC.

919 E. HILLSDALE BLVD.

(Street)

FOSTER CITY CALIFORNIA 94404

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/21/2026

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

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

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

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	09/21/2026		S(1)		72	D	$175.54	59,482	D
Common Stock	09/21/2026		S(1)		27	D	$177.9833(2)	59,455	D
Common Stock	09/21/2026		S(1)		241	D	$178.9571(3)	59,214	D
Common Stock	09/21/2026		S(1)		327	D	$179.9499(4)	58,887	D
Common Stock	09/21/2026		S(1)		199	D	$181.0318(5)	58,688	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 August 21, 2025.

2. The sale price represents the weighted average price of the shares sold ranging from $177.36 to $178.35 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 $178.41 to $179.36 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.

4. The sale price represents the weighted average price of the shares sold ranging from $179.61 to $180.55 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.

5. The sale price represents the weighted average price of the shares sold ranging from $180.65 to $181.55 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 K. Posey	09/22/2026
	** 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.
* Form 4: SEC 1474 (03-26)