Qualys, Inc. QLYS NASDAQ

NASDAQ Global Select • Technology • Software - Infrastructure • US • USD

SharesGrow Score

78/100

6/7 Pass

SharesGrow Intrinsic Value

Qualys, Inc. (QLYS) has 16 known insider and institutional holders on record. The largest holder is COURTOT PHILIPPE F with 5,156,645 shares. Other notable holders include Philippe Courtot Family Trust and Thakar Sumedh S.

Over the last 12 months, insiders have made 53 transactions in QLYS stock — 9 buys (valued at RSU Award) and 25 sells (valued at $2.85M). Insider selling has exceeded buying during this period.

QLYS Insider Ownership

Top Holder

COURTOT PHILIPPE F

5,156,645 shares

Buys (12 mo)

$0.00 value

Sells (12 mo)

$2.85M value

12-Month Transaction Activity

Buy 17%

Sell 47%

Top Insider Holders

#	Name	Role	Shares Owned	Last Filed	Relative Size
1	Courtot Philippe F	10 Percent Owner	5,156,645	2021-03-25	100%
2	Philippe Courtot Family Trust	10 Percent Owner	3,850,339	2021-11-08	75%
3	Thakar Sumedh S	CEO & President	252,171	2026-02-05	5%
4	Kim Joo Mi	Chief Financial Officer	88,489	2026-02-06	2%
5	Posey Bruce K	Chief Legal Officer	70,955	2026-03-16	1%
6	Peters Allan	Chief Revenue Officer	44,854	2023-03-02	1%
7	Bergeron Sandra E.	Director	27,904	2022-06-10	1%
8	Pace Peter	Director	17,118	2023-06-09	0%
9	Hank Jeffrey P	Director	13,888	2025-06-17	0%
10	Zangardi John A.	Director	12,321	2025-06-13	0%
11	Pfeiffer Wendy	Director	11,482	2025-06-16	0%
12	Paul Saikat	Chief Accounting Officer	10,326	2022-02-17	0%
13	Rogers Kristi Marie	Director	10,296	2025-06-13	0%
14	Berutti William	Director	6,561	2023-06-09	0%
15	Berquist Thomas	Director	5,604	2025-06-16	0%
16	Brooks Bradford L.	Director	3,198	2025-11-03	0%

Recent Transactions (last 12 months)

Date	Name	Role	Type	Shares	Price	Value
2026-03-13	Posey Bruce K	Chief Legal Officer	Informative Sell	65	$100.09	$6.51K
2026-03-05	Posey Bruce K	Chief Legal Officer	Informative Sell	100	$100.18	$10.02K
2026-02-20	Posey Bruce K	Chief Legal Officer	Informative Sell	96	$105.09	$10.09K
2026-02-04	Kim Joo Mi	Chief Financial Officer	Informative Sell	200	$129.76	$25.95K
2026-02-03	Kim Joo Mi	Chief Financial Officer	Tax Withholding of RSU	2,683	$127.52	$342.14K
2026-02-03	Thakar Sumedh S	CEO & President	Tax Withholding of RSU	10,394	$127.52	$1.33M
2026-02-03	Posey Bruce K	Chief Legal Officer	Tax Withholding of RSU	31	$127.52	$3.95K
2026-02-02	Kim Joo Mi	Chief Financial Officer	Informative Sell	300	$137.19	$41.16K
2026-02-01	Kim Joo Mi	Chief Financial Officer	Tax Withholding of RSU	2,769	$131.90	$365.23K
2026-02-01	Thakar Sumedh S	CEO & President	Tax Withholding of RSU	5,662	$131.90	$746.82K
2026-02-01	Posey Bruce K	Chief Legal Officer	Tax Withholding of RSU	1,659	$131.90	$218.82K
2026-01-20	Posey Bruce K	Chief Legal Officer	Informative Sell	106	$134.50	$14.26K
2026-01-14	Thakar Sumedh S	CEO & President	Informative Sell	200	$134.75	$26.95K
2026-01-02	Kim Joo Mi	Chief Financial Officer	Informative Sell	100	$133.35	$13.34K
2025-12-22	Posey Bruce K	Chief Legal Officer	Informative Sell	126	$143.49	$18.08K
2025-12-15	Thakar Sumedh S	CEO & President	Option Exercise (Sell)	6,500	$25.56	$166.14K
2025-12-09	Kim Joo Mi	Chief Financial Officer	Informative Sell	4,153	$150.42	$624.68K
2025-12-04	Posey Bruce K	Chief Legal Officer	Informative Sell	1,000	$150.00	$150K
2025-12-03	Posey Bruce K	Chief Legal Officer	Informative Sell	384	$149.35	$57.35K
2025-12-02	Kim Joo Mi	Chief Financial Officer	Informative Sell	481	$147.69	$71.04K
2025-11-21	Kim Joo Mi	Chief Financial Officer	Informative Sell	1,400	$144.20	$201.87K
2025-11-14	Thakar Sumedh S	CEO & President	Option Exercise (Sell)	6,500	$25.56	$166.14K
2025-11-12	Thakar Sumedh S	CEO & President	Informative Sell	2,200	$155.04	$341.09K
2025-11-01	Kim Joo Mi	Chief Financial Officer	Tax Withholding of RSU	3,802	$123.26	$468.63K
2025-11-01	Thakar Sumedh S	CEO & President	Tax Withholding of RSU	6,043	$123.26	$744.86K