Sumedh S. Thakar - 14 Oct 2026 Form 4 Insider Report for QUALYS, INC. (QLYS)

Reporting relationship: CEO & PRESIDENT, Director
Issuer ticker: QLYS
Reported as of: 14 Oct 2026
Net transaction value: -$609,148
SEC form: 4
Accepted by SEC: 15 Oct 2026, 17:25:03 UTC
Prior SEC filing: 15 Sep 2026
Source filing: View source filing
Reporting owner signature: /s/ Bruce Posey by power of attorney for Sumedh S. Thakar

Filing notes and source

Key filing fact

Sumedh S. Thakar filed Form 4 for QUALYS, INC. (QLYS) on 15 Oct 2026.

Key facts

This page summarizes Sumedh S. Thakar's Form 4 filing for QUALYS, INC. (QLYS).
5 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 15 Oct 2026, 17:25.

Change

Previous filing in this sequence was filed on 15 Sep 2026.
Current net transaction value: -$609,148.

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: 15 Oct 2026

Reported non-derivative transactions

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

QLYS transaction

Common Stock

Sale

Transaction value: -$75,210
Shares: -400
Change %: -0.22%
Price: $188.03
Shares after: 179,938
Date: 14 Oct 2026
Ownership: Direct
Footnotes: F1, F2

QLYS transaction

Common Stock

Sale

Transaction value: -$283,803
Shares: -1,500
Change %: -0.83%
Price: $189.20
Shares after: 178,438
Date: 14 Oct 2026
Ownership: Direct
Footnotes: F1, F3

QLYS transaction

Common Stock

Sale

Transaction value: -$75,994
Shares: -400
Change %: -0.22%
Price: $189.98
Shares after: 178,038
Date: 14 Oct 2026
Ownership: Direct
Footnotes: F1, F4

QLYS transaction

Common Stock

Sale

Transaction value: -$96,419
Shares: -500
Change %: -0.28%
Price: $192.84
Shares after: 177,538
Date: 14 Oct 2026
Ownership: Direct
Footnotes: F1, F5

QLYS transaction

Common Stock

Sale

Transaction value: -$77,721
Shares: -400
Change %: -0.23%
Price: $194.30
Shares after: 177,138
Date: 14 Oct 2026
Ownership: Direct
Footnotes: F1, F6

^* 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 6 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 27, 2026.

Footnote F2

The sale price represents the weighted average price of the shares sold ranging from $187.64 to $188.18 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 $188.79 to $189.77 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 $189.85 to $190.11 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 F5

The sale price represents the weighted average price of the shares sold ranging from $192.43 to $193.41 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 $194.01 to $194.54 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.