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QLYSQualys, Inc. · Insider ownership research

Qualys, Inc. insiders sold $23.1M in the past 12 months. How much of their stake is that?

100% was sold under disclosed trading plans. The largest seller, Sumedh Thakar (CEO & President, Director), sold $14.1M.Share-of-stake figures for this company are being verified and will be added when that check is finished. Why

Updated Oct 16, 2026 from SEC filings · covers Oct 17, 2025 to Oct 16, 2026
$14.1M
largest seller, Sumedh Thakar, past 12 months
100%
of sales were under disclosed trading plans, past 12 months
6 of 9
officers and directors sold shares, past 12 months
Is this normal? In line with the past 5 years. 6 insiders sold; the average is 6 a year. Year by year
Latest filing: Filed Oct 15 for a sale on Oct 14. Sumedh Thakar sold 3.2K shares ($609K) under a disclosed plan. Filing
SEC ownership filings: 69 filed in the 12 months to Oct 16, 2026; 1,032 on record since Sep 27, 2012 · See the evidence

What stands out

Routine activity: 100% of sales were under disclosed plans, and no insider sold more than 1% of vested holdings.

A share of stake is shown for 0 of the 6 officers and directors who sold. 9 are left out

i
Left out: Sumedh Thakar, Joo Kim, Bruce Posey, Jeffrey Hank, Wendy Pfeiffer, Kristi Rogers, Thomas Berquist, John Zangardi and Bradford Brooks (share of stake is being verified).
Disclosed company stock is not an insider's whole wealth.

Who sold, and how much of their stake

Officers and directors, past 12 months. Their share of stake is being verified and is not shown yet; amounts and trading plans are below.

Sumedh Thakar
CEO & President, Director
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$14.1MDisclosed plan
Joo Kim
Chief Financial Officer
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$6.3MDisclosed plan
Bruce Posey
Chief Legal Officer
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$2.1MDisclosed plan
Wendy Pfeiffer
Director
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$277KDisclosed plan
Thomas Berquist
Director
Not confirmed
Share of stake not shown: share of stake is being verified. Why
$194KDisclosed plan
All 6 sellers

Selling by month

Officers and directors, Oct 2025 to Oct 2026. Each sale is counted once: under a disclosed plan, else to cover taxes, else no plan disclosed.

Disclosed planOne dollar scale for every month; the tallest bar is labeled
Oct 2025: $69K under a disclosed planOctNov 2025: $2.6M under a disclosed planNovDec 2025: $4.4M under a disclosed planDecJan 2026: $1.4M under a disclosed planJanFeb 2026: $1.4M under a disclosed planFebMar 2026: $17K under a disclosed planMarAprMay 2026: $539K under a disclosed planMayJun 2026: $8.9M under a disclosed plan$8.9MJunJul 2026: $1.0M under a disclosed planJulAug 2026: $1.1M under a disclosed planAugSep 2026: $964K under a disclosed planSepOct 2026: $609K under a disclosed planOct

Recent activity

Past 30 days, Sep 17, 2026 to Oct 16, 2026
Oct 14, 2026Sumedh Thakar sold 3.2K shares ($609K) under a disclosed trading plan.
WhoSharesPrice% of total stakeTotal stake afterTrade dateFiled
Sumedh Thakar
CEO & President, Director
3,200$190.36n/an/aOct 14, 2026Oct 15, 2026
Sep 21, 2026Bruce Posey sold 866 shares ($155K) under a disclosed trading plan.
WhoSharesPrice% of total stakeTotal stake afterTrade dateFiled
Bruce Posey
Chief Legal Officer
866$179.49n/an/aSep 21, 2026Sep 22, 2026

"% of total stake" is the shares in an event against all the vested shares the person held that day, across every share class and holding entity, after that day's vesting. "n/a" means the person's holdings are not confirmed, or the row is a purchase. "Holdings record incomplete" means more shares were sold than the filings show the person held that day, so a percentage would be wrong.

Common questions

Is the Qualys, Inc. CEO selling stock?

Yes. Sumedh Thakar sold 103K shares ($14.1M) in the past 12 months, all of it under a trading plan disclosed in the filings.

Why are Qualys, Inc. insiders selling?

Filings rarely give a reason, and we don't guess at one. What they show is how the sales were made: 100% of sales by value ran under 10b5-1 trading plans disclosed in the filings. A trading plan schedules sales in advance.

Are any Qualys, Inc. insiders buying?

No. Officers and directors reported no purchases in the past 12 months.

The evidence

Who sold6 officers and directors: amount, % of holdings, trading plan
Who soldAmount% of holdingsTrading plan
Sumedh Thakar
CEO & President, Director
$14.1M
103K shares
Not confirmed
share of stake is being verified. Why
Disclosed plan
Joo Kim
Chief Financial Officer
$6.3M
45K shares
Not confirmed
share of stake is being verified. Why
Disclosed plan
Bruce Posey
Chief Legal Officer
$2.1M
15K shares
Not confirmed
share of stake is being verified. Why
Disclosed plan
Wendy Pfeiffer
Director
$277K
2K shares
Not confirmed
share of stake is being verified. Why
Disclosed plan
Thomas Berquist
Director
$194K
1.4K shares
Not confirmed
share of stake is being verified. Why
Disclosed plan
Jeffrey Hank
Director
$103K
940 shares
Not confirmed
share of stake is being verified. Why
Disclosed plan
The full ownership picture0 of 9 officers and directors confirmed

Vested shares across all share classes, held directly and through trusts, LLCs and family members, as reported on SEC Forms 3, 4 and 5. Unvested awards and options are never counted as owned shares.

InsiderHeld Oct 16, 2025SoldHeld Oct 16, 2026Still held
Sumedh Thakar
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Sumedh Thakar are complete.
CEO & President, Director
n/a−103Kn/an/a
Vesting, gifts, unvested awards and holding lines for Sumedh Thakar

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Sumedh Thakar are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
−54Kwithheld by the company for taxes
Joo Kim
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Joo Kim are complete.
Chief Financial Officer
n/a−45Kn/an/a
Vesting, gifts, unvested awards and holding lines for Joo Kim

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Joo Kim are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
−21Kwithheld by the company for taxes
Bruce Posey
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Bruce Posey are complete.
Chief Legal Officer
n/a−15Kn/an/a
Vesting, gifts, unvested awards and holding lines for Bruce Posey

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Bruce Posey are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
−12Kwithheld by the company for taxes
Jeffrey Hank
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Jeffrey Hank are complete.
Director
n/a−940n/an/a
Vesting, gifts, unvested awards and holding lines for Jeffrey Hank

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Jeffrey Hank are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Wendy Pfeiffer
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Wendy Pfeiffer are complete.
Director
n/a−2Kn/an/a
Vesting, gifts, unvested awards and holding lines for Wendy Pfeiffer

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Wendy Pfeiffer are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Kristi Rogers
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Kristi Rogers are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Kristi Rogers

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Kristi Rogers are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Thomas Berquist
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Thomas Berquist are complete.
Director
n/a−1.4Kn/an/a
Vesting, gifts, unvested awards and holding lines for Thomas Berquist

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Thomas Berquist are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
John Zangardi
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for John Zangardi are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for John Zangardi

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for John Zangardi are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)
Bradford Brooks
!
Holdings and share of stake are being verified. Share-of-stake figures and holdings for this company are held back while they are verified. Sales and other transactions for Bradford Brooks are complete.
Director
n/a0n/an/a
Vesting, gifts, unvested awards and holding lines for Bradford Brooks

Holdings and share of stake are being verified. Sales, proceeds, plan and tax status and dates for Bradford Brooks are complete; balances and unit counts will be added when the check is finished.

0gifted (net of own trusts)

Holdings and share of stake for Qualys, Inc. are being verified, so no balances, unit counts or percentages are shown. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings.

What explains the selling$23.1M of sales by plan status, purpose, seller and month

Officer and director open-market sales: $23.1M across 168,054 shares. Plan status and stated purpose are separate questions, and a sale can have both.

By plan status

Taxes

87,115 shares ($10.8M) were withheld by the company for taxes, which isn't a market sale.

SellerShares soldProceedsUnder a disclosed planShare of totalSales dates
Sumedh Thakar
CEO & President, Director
103K$14.1M100%61%Nov 12, 2025 to Oct 14, 2026
Joo Kim
Chief Financial Officer
45K$6.3M100%27%Nov 21, 2025 to Sep 2, 2026
Bruce Posey
Chief Legal Officer
15K$2.1M100%9%Oct 20, 2025 to Sep 21, 2026
Wendy Pfeiffer
Director
2K$277K100%1%May 22, 2026 to Aug 20, 2026
Thomas Berquist
Director
1.4K$194K100%0.8%Jun 12, 2026 to Sep 2, 2026
Jeffrey Hank
Director
940$103K100%0.4%Jun 11, 2026 to Jun 12, 2026

Sales by month

MonthSale proceedsDisclosed planTo cover taxesNo plan disclosed
Oct 2025$69K$69K$0$0
Nov 2025$2.6M$2.6M$0$0
Dec 2025$4.4M$4.4M$0$0
Jan 2026$1.4M$1.4M$0$0
Feb 2026$1.4M$1.4M$0$0
Mar 2026$17K$17K$0$0
Apr 2026$0$0$0$0
May 2026$539K$539K$0$0
Jun 2026$8.9M$8.9M$0$0
Jul 2026$1.0M$1.0M$0$0
Aug 2026$1.1M$1.1M$0$0
Sep 2026$964K$964K$0$0
Oct 2026$609K$609K$0$0
Is this normal? Selling year by year5 earlier years to compare with

In line with the past 5 years. 6 insiders sold; the average is 6 a year.

12 months endingShares soldInsiders who soldProceeds
Oct 16, 2026
Latest 12 months
168K6$23.1M
Oct 16, 2025
1 year earlier
176K8$24.5M
Oct 16, 2024
2 years earlier
112K5$17.4M
Oct 17, 2023
3 years earlier
139K4$18.1M
Oct 17, 2022
4 years earlier
239K5$31.6M
Oct 17, 2021
5 years earlier
517K6$50.2M

Open-market sales (Form 4 code S) by people who were officers or directors, in split-adjusted shares. Earlier years include people who have since left. A sale that an outside holder also reports (a family trust, a fund) is counted with outside holders in every year. Shares, not dollars, are compared, so a change in the stock price doesn't look like a change in selling. Years the filings don't fully cover are shown but left out of the average.

Known gaps and uncertainty9 officers and directors not confirmed

Holdings and share of stake are being verified. Balances, unit counts and every share-of-stake figure for Qualys, Inc. are held back until that check is finished. Sales, proceeds, plan and tax status, titles and dates come straight from individual filings and are complete.

External context: we only cite outside events when a documented connection exists. None is shown for this period.

Sources and methodology1,032 filings on record, 69 filed in the 12-month period, and how we read them

All 1,032 Forms 3, 4 and 5 on record for Qualys, Inc. (SEC CIK 1107843), filed from Sep 27, 2012 to Oct 15, 2026; 69 of them were filed in the 12 months this page covers, retrieved from SEC EDGAR on Oct 16, 2026. Prices are the ones reported in each filing, often weighted averages.

Holdings. Each holding line (a share class plus an owner, such as a trust or LLC) carries its last reported balance forward. Entities first reported during the period start at zero, so transfers between an insider's own trusts don't count as selling. Lines not reported for three years or more are listed separately and left out of totals.

Sales. A sale counts as under a 10b5-1 plan if its footnote cites one or the filing's Rule 10b5-1 box is checked, and as tax-related if its footnote cites tax obligations or sell-to-cover. Shares withheld by the company for taxes are listed separately. Sales with neither attribute are labeled "no plan disclosed".

Full methodology

Former or inactive filers (25)No filing in 18 months; last reported balances, not in any total
NameLast filedLast reported balance
Peter PaceJun 9, 202317,118 shares, last reported balance as of Jun 7, 2023
William BeruttiJun 9, 20236,561 shares, last reported balance as of Jun 7, 2023
Allan PetersMar 2, 202344,854 shares, last reported balance as of Mar 1, 2023
Sandra BergeronJun 10, 202227,904 shares, last reported balance as of Jun 8, 2022
Saikat PaulFeb 17, 202210,326 shares, last reported balance as of Feb 15, 2022
Philippe Courtot Family TrustNov 8, 20213,850,339 shares, last reported balance as of Nov 4, 2021
Philippe CourtotMar 25, 20215,427,271 shares, last reported balance as of Mar 23, 2021
Melissa FisherMay 20, 2020171,633 shares, last reported balance as of May 18, 2020
Patricia HatterJun 10, 20197,239 shares, last reported balance as of Jun 7, 2019
Amer DeebaAug 3, 201831,867 shares, last reported balance as of Aug 2, 2018
Sheila CheungAug 1, 20187,867 shares, last reported balance as of Jul 26, 2018
Jason ReamJul 30, 20184,664 shares, last reported balance as of Jul 26, 2018
Donald DixonJun 20, 2018173,033 shares, last reported balance as of Jun 18, 2018
Todd HeadleyJun 20, 20187,302 shares, last reported balance as of Jun 18, 2018
Donald DixonJun 20, 2018463,541 shares, last reported balance as of Aug 5, 2014
Howard SchmidtAug 18, 201663,861 shares, last reported balance as of Aug 16, 2016
Donald McCauleyMar 30, 201660,000 shares, last reported balance as of Feb 26, 2016
TRIDENT CAPITAL MANAGEMENT V LLCAug 6, 20151,904,637 shares, last reported balance as of Aug 5, 2015
Peter AlbertJan 16, 2014No balance on record
Ann JohnsonNov 26, 2013No balance on record
John WilsonSep 11, 201355,500 shares, last reported balance as of Sep 10, 2013
Yves SisteronJun 6, 20131,657,723 shares, last reported balance as of Oct 3, 2012
Yves SisteronJun 6, 2013851,994 shares, last reported balance as of Oct 3, 2012
AOS Partners, LPOct 3, 20122,509,717 shares, last reported balance as of Oct 3, 2012
Arjet SkenduliNo balance on record

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