Sumedh S. Thakar - 15 Dec 2025 Form 4 Insider Report for QUALYS, INC. (QLYS)

Reporting relationship: CEO & PRESIDENT, Director
Issuer ticker: QLYS
Reported as of: 15 Dec 2025
Net transaction value: -$1,084,411
SEC form: 4
Accepted by SEC: 16 Dec 2025, 18:05:24 UTC
Prior SEC filing: 17 Nov 2025
Next SEC filing: 16 Jan 2026
Source filing: View source filing
Reporting owner signature: /s/ Bruce Posey by power of attorney for Sumedh S. Thakar

Key filing fact

Sumedh S. Thakar filed Form 4 for QUALYS, INC. (QLYS) on 16 Dec 2025.

Key facts

This page summarizes Sumedh S. Thakar's Form 4 filing for QUALYS, INC. (QLYS).
9 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 16 Dec 2025, 18:05.

Change

Previous filing in this sequence was filed on 17 Nov 2025.
Current net transaction value: -$1,084,411.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001558242 Primary reporting owner

Thakar Sumedh S

Relationship: CEO & PRESIDENT, Director
Address: C/O QUALYS, INC., 919 E. HILLSDALE BLVD., FOSTER CITY
Signature: /s/ Bruce Posey by power of attorney for Sumedh S. Thakar
Signature date: 16 Dec 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

QLYS transaction

Common Stock

Options Exercise

Transaction value: $166,140
Shares: +6,500
Change %: +2.6%
Price: $25.56
Shares after: 261,300
Date: 15 Dec 2025
Ownership: Direct
Footnotes: F1

QLYS transaction

Common Stock

Sale

Transaction value: $378,281
Shares: -2,600
Change %: -1%
Price: $145.49
Shares after: 258,700
Date: 15 Dec 2025
Ownership: Direct
Footnotes: F1, F2

QLYS transaction

Common Stock

Sale

Transaction value: $307,296
Shares: -2,100
Change %: -0.81%
Price: $146.33
Shares after: 256,600
Date: 15 Dec 2025
Ownership: Direct
Footnotes: F1, F3

QLYS transaction

Common Stock

Sale

Transaction value: $206,030
Shares: -1,400
Change %: -0.55%
Price: $147.16
Shares after: 255,200
Date: 15 Dec 2025
Ownership: Direct
Footnotes: F1, F4

QLYS transaction

Common Stock

Sale

Transaction value: $184,371
Shares: -1,243
Change %: -0.49%
Price: $148.33
Shares after: 253,957
Date: 15 Dec 2025
Ownership: Direct
Footnotes: F1, F5

QLYS transaction

Common Stock

Sale

Transaction value: $53,386
Shares: -357
Change %: -0.14%
Price: $149.54
Shares after: 253,600
Date: 15 Dec 2025
Ownership: Direct
Footnotes: F1, F6

QLYS transaction

Common Stock

Sale

Transaction value: $30,021
Shares: -200
Change %: -0.08%
Price: $150.10
Shares after: 253,400
Date: 15 Dec 2025
Ownership: Direct
Footnotes: F1, F7

QLYS transaction

Common Stock

Sale

Transaction value: $91,167
Shares: -600
Change %: -0.24%
Price: $151.94
Shares after: 252,800
Date: 15 Dec 2025
Ownership: Direct
Footnotes: F1, F8

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

QLYS transaction Derivative

Stock Option (right to buy)

Options Exercise

Transaction value: $0
Shares: -6,500
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 15 Dec 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 6,500
Exercise price: $25.56
Footnotes: F9

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 9 footnotes

Footnote 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 26, 2025.

Footnote F2

The sale price represents the weighted average price of the shares sold ranging from $144.99 to $145.97 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.

Footnote F3

The sale price represents the weighted average price of the shares sold ranging from $146.01 to $146.99 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.

Footnote F4

The sale price represents the weighted average price of the shares sold ranging from $147.02 to $147.48 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.

Footnote F5

The sale price represents the weighted average price of the shares sold ranging from $148.04 to $149.00 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.

Footnote F6

The sale price represents the weighted average price of the shares sold ranging from $149.07 to $150.05 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.

Footnote F7

The sale price represents the weighted average price of the shares sold ranging from $150.10 to $150.11 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.

Footnote F8

The sale price represents the weighted average price of the shares sold ranging from $151.19 to $152.05 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.

Footnote F9

The option is fully vested and immediately exercisable.