Qualys CEO sells 3,200 shares under trading plan

Rhea-AI Filing Summary

QUALYS, INC. (QLYS) CEO & President Sumedh S Thakar reported multiple open-market sales of common stock on August 14, 2026. In total, he sold 3,200 shares at weighted-average prices ranging from about $185.79 to $192.53 per share. All sales were executed under a Rule 10b5-1 trading plan adopted on February 27, 2026, indicating they were pre-arranged rather than opportunistic discretionary trades.

Insider Trade Summary 10b5-1

Net Seller: 3,200 shares

Net Sell 5 txns

Insider Thakar Sumedh S

Role CEO & PRESIDENT

Sold 3,200 shs ($605K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	406	$186.2752	$76K
Sale	Common Stock F1, F3	794	$188.0678	$149K
Sale	Common Stock F1, F4	1,300	$189.4095	$246K
Sale	Common Stock F1, F5	600	$190.4917	$114K
Sale	Common Stock F1, F6	100	$192.2748	$19K

Holdings After Transaction: Common Stock — 183,538 shares (Direct)

Footnotes (6)

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 February 27, 2026.
2. F2. The sale price represents the weighted average price of the shares sold ranging from $185.79 to $186.62 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 $187.54 to $188.52 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 $189.04 to $189.92 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 $190.14 to $190.93 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.
6. F6. The sale price represents the weighted average price of the shares sold ranging from $192.15 to $192.53 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: 3,200 shares Shares in first trade: 406 shares Weighted-average price (first trade): $186.2752 per share +3 more

6 metrics

Total shares sold 3,200 shares Aggregate non-derivative sales of QLYS common stock on August 14, 2026

Shares in first trade 406 shares Common stock sold at $186.2752 weighted-average price on August 14, 2026

Weighted-average price (first trade) $186.2752 per share Based on sales ranging from $185.79 to $186.62 per share

Largest block sold 1,300 shares Common stock sold at $189.4095 weighted-average price on August 14, 2026

Highest reported price range $192.15–$192.53 per share Price range for the 100-share sale with $192.2748 weighted-average price

Rule 10b5-1 plan adoption date February 27, 2026 Date the reporting person adopted the trading plan governing these sales

Key Terms

Rule 10b5-1 trading plan, weighted average price, open market or private transaction

3 terms

Rule 10b5-1 trading plan regulatory

"The sale transaction reported ... 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 or private transaction financial

"transaction_code_description: Sale in open market or private transaction"

FAQ

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

What insider transaction did QLYS CEO Sumedh Thakar report on this Form 4?

Sumedh S Thakar reported open-market sales of 3,200 QLYS common shares on August 14, 2026. The sales were broken into several trades at different weighted-average prices within disclosed price ranges.

At what prices did the QLYS CEO sell shares in the August 14, 2026 transactions?

The 3,200 QLYS shares were sold at weighted-average prices from about $185.79 to $192.53 per share. Each line item has its own weighted-average price and stated intra-day price range for the shares sold.

How many QLYS shares did the CEO sell in total on August 14, 2026?

Across five transactions, the CEO sold a total of 3,200 QLYS common shares. Individual trades involved 406, 794, 1,300, 600, and 100 shares, respectively, all reported as open-market or private sale transactions.

Were the August 14, 2026 QLYS insider sales made under a Rule 10b5-1 plan?

Yes. All reported sales were effected under a Rule 10b5-1 trading plan adopted by the reporting person on February 27, 2026. This indicates the transactions were pre-arranged according to that plan’s terms.

Does the Form 4 disclose the exact prices for each QLYS share sold?

The Form 4 discloses a weighted-average price for each transaction and the price range of shares sold. It states full per-trade price details are available on request to the issuer, security holders, or Commission staff.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 08/17/2026 - 04:04 PM EDT Learn about SEC filing dates

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^*

Thakar Sumedh S

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/14/2026

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	08/14/2026		S(1)		406	D	$186.2752(2)	186,332	D
Common Stock	08/14/2026		S(1)		794	D	$188.0678(3)	185,538	D
Common Stock	08/14/2026		S(1)		1,300	D	$189.4095(4)	184,238	D
Common Stock	08/14/2026		S(1)		600	D	$190.4917(5)	183,638	D
Common Stock	08/14/2026		S(1)		100	D	$192.2748(6)	183,538	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 27, 2026.

2. The sale price represents the weighted average price of the shares sold ranging from $185.79 to $186.62 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 $187.54 to $188.52 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 $189.04 to $189.92 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 $190.14 to $190.93 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.

6. The sale price represents the weighted average price of the shares sold ranging from $192.15 to $192.53 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 for Sumedh S. Thakar	08/17/2026
	** 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)