Sumedh S. Thakar - 03 Feb 2026 Form 4 Insider Report for QUALYS, INC. (QLYS)

Role: CEO & PRESIDENT, Director
Signature: /s/ Bruce Posey by power of attorney for Sumedh S. Thakar
Issuer symbol: QLYS
Transactions as of: 03 Feb 2026
Net transactions value: -$3,633,427
Form type: 4
Filing time: 05 Feb 2026, 16:29:38 UTC
Previous filing: 03 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Thakar Sumedh S	CEO & PRESIDENT, Director	C/O QUALYS, INC., 919 E. HILLSDALE BLVD., FOSTER CITY	/s/ Bruce Posey by power of attorney for Sumedh S. Thakar	05 Feb 2026	0001558242

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	QLYS	Common Stock	Award	$0	+20,427	+8.4%	$0.000000	262,565	03 Feb 2026	Direct	F1
transaction	QLYS	Common Stock	Tax liability	$1,325,443	-10,394	-4%	$127.52	252,171	03 Feb 2026	Direct	F2
transaction	QLYS	Common Stock	Award	$0	+19,984	+7.9%	$0.000000	272,155	03 Feb 2026	Direct	F3
transaction	QLYS	Common Stock	Tax liability	$1,296,623	-10,168	-3.7%	$127.52	261,987	03 Feb 2026	Direct	F4
transaction	QLYS	Common Stock	Award	$0	+15,184	+5.8%	$0.000000	277,171	03 Feb 2026	Direct	F5
transaction	QLYS	Common Stock	Tax liability	$985,220	-7,726	-2.8%	$127.52	269,445	03 Feb 2026	Direct	F6
transaction	QLYS	Common Stock	Award	$0	+401	+0.15%	$0.000000	269,846	03 Feb 2026	Direct	F1
transaction	QLYS	Common Stock	Tax liability	$26,142	-205	-0.08%	$127.52	269,641	03 Feb 2026	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the acquisition of shares upon the determination of the Board of Directors of the Issuer that the performance conditions were met with respect to performance share awards granted to the Reporting Person on October 27, 2022.
F2	The reported shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of performance restricted stock units awarded to the Reporting Person on October 27, 2022.
F3	Represents the acquisition of shares upon the determination of the Board of Directors of the Issuer that the performance conditions were met with respect to performance share awards granted to the Reporting Person on October 30, 2024.
F4	The reported shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of performance restricted stock units awarded to the Reporting Person on October 30, 2024.
F5	Represents the acquisition of shares upon the determination of the Board of Directors of the Issuer that the performance conditions were met with respect to performance share awards granted to the Reporting Person on October 26, 2023.
F6	The reported shares were withheld to cover the Reporting Person's tax liability in connection with the vesting of performance restricted stock units awarded to the Reporting Person on October 26, 2023.