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  4. [Form 4] QUALYS, INC. Insider Trading Activity

Qualys (NASDAQ: QLYS) CEO Thakar sells 3,200 shares in planned trades

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

QUALYS, INC. CEO & President Sumedh S. Thakar reported open-market sales of 3,200 shares of common stock on July 14, 2026, in eight separate transactions at various prices, including $149.3000 and $163.5650 per share. According to the disclosure, these sales were effected under a Rule 10b5-1 trading plan adopted on February 27, 2026. Following the reported transactions, Thakar holds 193,486 shares of Qualys common stock directly.

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Insider Thakar Sumedh S
Role CEO & PRESIDENT
Sold 3,200 shs ($514K)
Type Security Shares Price Value
Sale Common Stock F1 100 $149.30 $15K
Sale Common Stock F1 100 $151.53 $15K
Sale Common Stock F1 100 $155.30 $16K
Sale Common Stock F1, F2 200 $157.745 $32K
Sale Common Stock F1, F3 730 $160.8148 $117K
Sale Common Stock F1, F4 1,570 $161.6949 $254K
Sale Common Stock F1, F5 200 $162.40 $32K
Sale Common Stock F1, F6 200 $163.565 $33K
Holdings After Transaction: Common Stock — 193,486 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 $157.27 to $158.22 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 $160.16 to $161.15 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 $161.16 to $162.07 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 $162.18 to $162.62 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.
  6. F6. The sale price represents the weighted average price of the shares sold ranging from $163.48 to $163.65 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.
Shares sold 3,200 shares Aggregate open-market sales of common stock on July 14, 2026
Example sale price $163.5650 per share One reported open-market sale price for Qualys common stock on July 14, 2026
Example sale price $149.3000 per share Another reported open-market sale price for Qualys common stock on July 14, 2026
Post-transaction holdings 193,486 shares Common stock held directly by Sumedh S. Thakar after the reported sales
Number of sale transactions 8 Separate open-market sale entries reported for July 14, 2026
Rule 10b5-1 trading plan regulatory
"The sale transaction reported in this Form 4 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 sale financial
"transaction_action: open-market sale"
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

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FAQ

What did Qualys (QLYS) CEO Sumedh S. Thakar report selling in this Form 4?
Sumedh S. Thakar reported selling 3,200 shares of Qualys common stock. The sales occurred on July 14, 2026 across eight open-market transactions at various disclosed prices, as detailed in the Form 4 filing.

At what prices were the Qualys (QLYS) shares sold by the CEO?
The reported sales occurred at multiple prices, including $149.3000 and $163.5650 per share. Several entries reflect weighted average prices, with full price breakdowns available upon request to the issuer or Commission staff.

How many Qualys (QLYS) shares does the CEO hold after these transactions?
After the reported sales, Sumedh S. Thakar directly holds 193,486 shares of Qualys common stock. This figure reflects his post-transaction direct ownership as shown in the Form 4 non-derivative ownership table.

Were the Qualys (QLYS) CEO’s stock sales made under a trading plan?
Yes. The filing states the sale transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by Sumedh S. Thakar on February 27, 2026, indicating the trades were pre-arranged under that plan.

How many separate transactions did the Qualys (QLYS) CEO report on July 14, 2026?
The Form 4 lists eight separate open-market sale transactions in Qualys common stock on July 14, 2026. Each entry specifies the number of shares sold, the price per share, and the resulting direct share balance.

Does this Qualys (QLYS) Form 4 involve any derivative securities?
No derivative transactions are reported. The filing covers only non-derivative common stock sales, and the derivative section contains no remaining option or other derivative positions for this reporting event.
SEC Form 4
FORM 4UNITED 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)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
CEO & PRESIDENT
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
07/14/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock07/14/2026S(1)100D$149.3196,586D
Common Stock07/14/2026S(1)100D$151.53196,486D
Common Stock07/14/2026S(1)100D$155.3196,386D
Common Stock07/14/2026S(1)200D$157.745(2)196,186D
Common Stock07/14/2026S(1)730D$160.8148(3)195,456D
Common Stock07/14/2026S(1)1,570D$161.6949(4)193,886D
Common Stock07/14/2026S(1)200D$162.4(5)193,686D
Common Stock07/14/2026S(1)200D$163.565(6)193,486D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount 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 $157.27 to $158.22 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 $160.16 to $161.15 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 $161.16 to $162.07 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 $162.18 to $162.62 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.
6. The sale price represents the weighted average price of the shares sold ranging from $163.48 to $163.65 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. Thakar07/15/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR