Quick Takeaways
- QLYS - QUALYS, INC. has 16 insiders with reported activity on this page.
- Net insider value flow over the last year: -$22,030,022.
- Recent transaction rows are available for direct filing-level review.
Insider Transactions Reported by 16 Insiders of QUALYS, INC.
- Symbol
- QLYS on Nasdaq
- Location
- Foster City, CA
What Changed
- Buy value: ; sell value: $22,030,022.
- Net share flow: -158,753.
Why This Matters
- This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
- Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.
Source Evidence
Filed on Form 4
See Original Filing
Issuer insider activity is sourced from SEC Forms 3, 4, and 5.
Insider trading overview
Last 12 monthsNet insider flow leans to selling over the last 12 months. Net value: -$22,030,022.
Buys
$0
Shares: 0
Insiders: 0
Sells
$22,030,022
Shares: 158,753
Insiders: 8
Net
-$22,030,022
Shares: -158,753
Insiders: -8
| Window (months) | Buy shares | Sell shares | Buy $ | Sell $ | Net $ |
|---|---|---|---|---|---|
| 0-3 | 0 | 646 | $0 | $66,474 | -$66,474 |
| 3-6 | 0 | 58,570 | $0 | $8,263,859 | -$8,263,859 |
| 6-9 | 0 | 40,096 | $0 | $5,419,331 | -$5,419,331 |
| 9-12 | 0 | 59,441 | $0 | $8,280,358 | -$8,280,358 |
QUALYS, INC. executives and other stock owners filed with the SEC include:
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Philippe Courtot Family Trust | 10%+ Owner | $768,508,413 | Mixed | 04 Nov 2021 | ||
| Sumedh S. Thakar | CEO & PRESIDENT, Director | $24,441,225 | -$12,934,742 | -35% | Mixed | 01 May 2026 |
| Allan Peters | Chief Revenue Officer | $8,952,634 | Mixed | 01 Mar 2023 | ||
| Joo Mi Kim | Chief Financial Officer | $7,453,018 | -$6,031,128 | -45% | Median | 01 May 2026 |
| Bruce K. Posey | Chief Legal Officer | $6,033,977 | -$1,393,972 | -19% | Median | 01 May 2026 |
| Sandra E. Bergeron | Director | $5,569,499 | Mixed | 08 Jun 2022 | ||
| Peter Pace | Director | $3,416,667 | Mixed | 07 Jun 2023 | ||
| Jeffrey P. Hank | Director | $2,094,124 | -$91,369 | -4.2% | Mixed | 16 Jun 2025 |
| Saikat Paul | Chief Accounting Officer | $2,061,018 | Mixed | 15 Feb 2022 | ||
| Wendy Pfeiffer | Director | $1,437,557 | -$81,590 | -5.4% | Filing P/S | 15 Aug 2025 |
| William Berutti | Director | $1,309,543 | Mixed | 07 Jun 2023 | ||
| Kristi Marie Rogers | Director | $1,157,921 | -$228,998 | -17% | Filing P/S | 22 Aug 2025 |
| Thomas Berquist | Director | $681,971 | -$159,180 | -19% | Filing P/S | 02 Sep 2025 |
| John A. Zangardi | Director | $550,029 | -$1,109,043 | -67% | Mixed | 27 Aug 2025 |
| Bradford L. Brooks | Director | $423,191 | Mixed | 30 Oct 2025 | ||
| Arjet Skenduli | Chief Accounting Officer | Mixed | 23 Feb 2022 |
Top shareholders of QUALYS, INC. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.
Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
| Holder | Source | Role / Reporting | Ownership % | Shares | Holdings Value | 12M Net Δ | As of | Details |
|---|---|---|---|---|---|---|---|---|
| Philippe Courtot Family Trust |
3/4/5
|
10%+ Owner |
—
class O/S missing
|
3,850,339
|
$768,508,413 | — | 04 Nov 2021 | |
| BlackRock, Inc. |
13D/G
13F
|
Company |
14%
|
5,090,379
|
$645,205,538 | -$97,398,249 | 31 Mar 2025 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13D/G
13F
|
Vanguard Portfolio Management · Company |
7.2%
|
2,568,470
|
$225,640,090 | $0 | 31 Mar 2026 | |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
|
Vanguard Capital Management · Company |
5.2%
|
1,858,676
|
$163,284,687 | $0 | 31 Mar 2026 | |
| STATE STREET CORP |
13F
|
Company |
3.9%
|
1,388,720
|
$121,999,052 | — | 31 Mar 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
3.7%
|
1,320,909
|
$116,055,920 | — | 31 Mar 2026 | |
| AQR CAPITAL MANAGEMENT LLC |
13F
|
Company |
2.9%
|
1,038,928
|
$90,843,907 | — | 31 Mar 2026 | |
| Legal & General Group Plc |
13F
|
Company |
2.9%
|
1,029,587
|
$90,449,218 | — | 31 Mar 2026 | |
| Boston Trust Walden Corp |
13F
|
Company |
2.8%
|
1,010,376
|
$88,761,531 | — | 31 Mar 2026 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
2.8%
|
996,064
|
$87,504,222 | — | 31 Mar 2026 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
2.3%
|
832,796
|
$73,161,129 | — | 31 Mar 2026 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
2.1%
|
763,099
|
$67,040,637 | — | 31 Mar 2026 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
2.1%
|
760,842
|
$66,893,229 | — | 31 Mar 2026 | |
| Penserra Capital Management LLC |
13F
|
Company |
2%
|
732,504
|
$64,350,000 | — | 31 Mar 2026 | |
| MORGAN STANLEY |
13F
|
Company |
1.8%
|
646,426
|
$56,788,676 | — | 31 Mar 2026 | |
| RWA WEALTH PARTNERS, LLC |
13F
|
Company |
1.5%
|
548,760
|
$48,208,566 | — | 31 Mar 2026 | |
| NORTHERN TRUST CORP |
13F
|
Company |
1.4%
|
510,546
|
$44,851,467 | — | 31 Mar 2026 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
1.4%
|
502,419
|
$44,137,509 | — | 31 Mar 2026 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
1.4%
|
497,600
|
$43,714,160 | — | 31 Mar 2026 | |
| Neuberger Berman Group LLC |
13F
|
Company |
1.3%
|
470,116
|
$41,299,690 | — | 31 Mar 2026 | |
| CDAM (UK) Ltd |
13F
|
Company |
1.3%
|
469,001
|
$41,201,738 | — | 31 Mar 2026 | |
| LONDON CO OF VIRGINIA |
13F
|
Company |
1.3%
|
466,342
|
$40,969,044 | — | 31 Mar 2026 | |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. |
13F
|
Company |
1.2%
|
438,572
|
$38,528,791 | — | 31 Mar 2026 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC |
13F
|
Company |
1.2%
|
416,587
|
$36,597,169 | — | 31 Mar 2026 | |
| Invesco Ltd. |
13F
|
Company |
1.1%
|
380,820
|
$33,455,037 | — | 31 Mar 2026 | |
| Clark Capital Management Group, Inc. |
13F
|
Company |
1.1%
|
380,459
|
$33,423,323 | — | 31 Mar 2026 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.91%
|
324,180
|
$28,479,213 | — | 31 Mar 2026 | |
| Bank of New York Mellon Corp |
13F
|
Company |
0.89%
|
318,287
|
$27,961,551 | — | 31 Mar 2026 | |
| Alyeska Investment Group, L.P. |
13F
|
Company |
0.85%
|
304,677
|
$26,765,874 | — | 31 Mar 2026 | |
| VOYA INVESTMENT MANAGEMENT LLC |
13F
|
Company |
0.83%
|
297,355
|
$26,122,637 | — | 31 Mar 2026 | |
| Sumedh S. Thakar |
3/4/5
|
CEO & PRESIDENT, Director |
0.74%
|
263,086
mixed-class rows
|
$24,441,225 | -$12,934,742 | 01 May 2026 | |
| TUDOR INVESTMENT CORP ET AL |
13F
|
Company |
0.7%
|
250,885
|
$22,040,247 | — | 31 Mar 2026 | |
| VANGUARD FIDUCIARY TRUST CO |
13F
|
Company |
0.7%
|
250,359
|
$21,994,038 | — | 31 Mar 2026 | |
| FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ |
13F
|
Company |
0.68%
|
243,872
|
$21,424,155 | — | 31 Mar 2026 | |
| Portolan Capital Management, LLC |
13F
|
Company |
0.67%
|
239,028
|
$20,998,610 | — | 31 Mar 2026 | |
| MILLENNIUM MANAGEMENT LLC |
13F
|
Company |
0.66%
|
235,382
|
$20,678,309 | — | 31 Mar 2026 | |
| Fundsmith LLP |
13F
|
Company |
0.63%
|
226,077
|
$19,860,864 | — | 31 Mar 2026 | |
| BNP PARIBAS FINANCIAL MARKETS |
13F
|
Company |
0.58%
|
208,624
|
$18,327,618 | — | 31 Mar 2026 | |
| ENVESTNET ASSET MANAGEMENT INC |
13F
|
Company |
0.58%
|
207,674
|
$18,244,167 | — | 31 Mar 2026 | |
| BANK OF AMERICA CORP /DE/ |
13F
|
Company |
0.58%
|
206,645
|
$18,153,763 | — | 31 Mar 2026 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.57%
|
203,530
|
$17,880,110 | — | 31 Mar 2026 | |
| UBS Group AG |
13F
|
Company |
0.54%
|
194,217
|
$17,061,963 | — | 31 Mar 2026 | |
| CANADA LIFE ASSURANCE Co |
13F
|
Company |
0.53%
|
188,726
|
$16,568,000 | — | 31 Mar 2026 | |
| AMERIPRISE FINANCIAL INC |
13F
|
Company |
0.51%
|
183,972
|
$16,160,334 | — | 31 Mar 2026 | |
| ACADIAN ASSET MANAGEMENT LLC |
13F
|
Company |
0.51%
|
182,107
|
$15,983,000 | — | 31 Mar 2026 | |
| Retirement Systems of Alabama |
13F
|
Company |
0.51%
|
181,626
|
$15,955,844 | — | 31 Mar 2026 | |
| FEDERATED HERMES, INC. |
13F
|
Company |
0.5%
|
180,260
|
$15,835,841 | — | 31 Mar 2026 | |
| NORDEA INVESTMENT MANAGEMENT AB |
13F
|
Company |
0.47%
|
168,031
|
$14,465,789 | — | 31 Mar 2026 | |
| Trexquant Investment LP |
13F
|
Company |
0.44%
|
156,021
|
$13,706,445 | — | 31 Mar 2026 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.43%
|
155,036
|
$13,619,913 | — | 31 Mar 2026 |
Recent Insider Transactions by Companies or Individuals for QUALYS, INC.
Showing up to 300 most recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | Value $ | * Price $ | Shares | Shares Owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Bruce K. Posey | QLYS | Common Stock | Tax liability | -3.2% | -2,270 | 68,685 | 01 May 2026 | Direct | ||
| Joo Mi Kim | QLYS | Common Stock | Tax liability | -4.34% | -3,845 | 84,838 | 01 May 2026 | Direct | ||
| Sumedh S. Thakar | QLYS | Common Stock | Tax liability | -2.5% | -6,748 | 263,086 | 01 May 2026 | Direct | ||
| Bruce K. Posey | QLYS | Common Stock | Sale | -0.09% | $6,506 | $100.09 | -65 | 70,955 | 13 Mar 2026 | Direct |
| Bruce K. Posey | QLYS | Common Stock | Sale | -0.14% | $10,018 | $100.18 | -100 | 71,020 | 05 Mar 2026 | Direct |
| Bruce K. Posey | QLYS | Common Stock | Sale | -0.67% | $49,950 | $103.85 | -481 | 71,120 | 20 Feb 2026 | Direct |
| Joo Mi Kim | QLYS | Common Stock | Sale | -7.14% | $873,369 | $128.46 | -6,799 | 88,489 | 04 Feb 2026 | Direct |
| Joo Mi Kim | QLYS | Common Stock | Tax liability | -7.17% | -7,038 | 91,086 | 03 Feb 2026 | Direct | ||
| Joo Mi Kim | QLYS | Common Stock | Award | 16.5% | 13,837 | 97,678 | 03 Feb 2026 | Direct | ||
| Sumedh S. Thakar | QLYS | Common Stock | Tax liability | -10.2% | -28,493 | 252,171 | 03 Feb 2026 | Direct | ||
| Sumedh S. Thakar | QLYS | Common Stock | Award | 25.3% | 55,996 | 277,171 | 03 Feb 2026 | Direct | ||
| Bruce K. Posey | QLYS | Common Stock | Tax liability | -5.16% | -3,645 | 66,968 | 03 Feb 2026 | Direct | ||
| Bruce K. Posey | QLYS | Common Stock | Award | 12.6% | 8,113 | 72,490 | 03 Feb 2026 | Direct | ||
| Joo Mi Kim | QLYS | Common Stock | Sale | -3.71% | $463,024 | $135.63 | -3,414 | 88,489 | 02 Feb 2026 | Direct |
| Joo Mi Kim | QLYS | Common Stock | Tax liability | -2.92% | -2,769 | 91,903 | 01 Feb 2026 | Direct | ||
| Sumedh S. Thakar | QLYS | Common Stock | Tax liability | -2.28% | -5,662 | 242,138 | 01 Feb 2026 | Direct | ||
| Bruce K. Posey | QLYS | Common Stock | Tax liability | -2.42% | -1,659 | 66,939 | 01 Feb 2026 | Direct | ||
| Bruce K. Posey | QLYS | Common Stock | Sale | -1.58% | $145,708 | $132.34 | -1,101 | 68,598 | 20 Jan 2026 | Direct |
| Sumedh S. Thakar | QLYS | Common Stock | Sale | -1.98% | $668,817 | $133.76 | -5,000 | 247,800 | 14 Jan 2026 | Direct |
| Joo Mi Kim | QLYS | Common Stock | Sale | -4.78% | $621,540 | $130.77 | -4,753 | 94,672 | 02 Jan 2026 | Direct |
| Bruce K. Posey | QLYS | Common Stock | Sale | -1.52% | $153,427 | $142.46 | -1,077 | 69,699 | 22 Dec 2025 | Direct |
| Sumedh S. Thakar | QLYS | Common Stock | Sale | -3.25% | $1,250,551 | $147.12 | -8,500 | 252,800 | 15 Dec 2025 | Direct |
| Sumedh S. Thakar | QLYS | Common Stock | Options Exercise | 2.55% | 6,500 | 261,300 | 15 Dec 2025 | Direct | ||
| Sumedh S. Thakar | QLYS | Stock Option (right to buy) | Options Exercise | -100% | -6,500 | 0 | 15 Dec 2025 | Direct | ||
| Joo Mi Kim | QLYS | Common Stock | Sale | -8% | $1,295,705 | $149.81 | -8,649 | 99,425 | 09 Dec 2025 | Direct |
| Bruce K. Posey | QLYS | Common Stock | Sale | -1.39% | $150,000 | $150.00 | -1,000 | 70,776 | 04 Dec 2025 | Direct |
| Bruce K. Posey | QLYS | Common Stock | Sale | -4.11% | $449,219 | $145.99 | -3,077 | 71,776 | 03 Dec 2025 | Direct |
| Joo Mi Kim | QLYS | Common Stock | Sale | -6.49% | $1,100,307 | $146.59 | -7,506 | 108,074 | 02 Dec 2025 | Direct |
| Joo Mi Kim | QLYS | Common Stock | Sale | -6.24% | $1,092,192 | $141.95 | -7,694 | 115,580 | 21 Nov 2025 | Direct |
| Sumedh S. Thakar | QLYS | Common Stock | Sale | -3.23% | $1,212,766 | $142.68 | -8,500 | 254,800 | 14 Nov 2025 | Direct |
| Sumedh S. Thakar | QLYS | Common Stock | Options Exercise | 2.53% | 6,500 | 263,300 | 14 Nov 2025 | Direct | ||
| Sumedh S. Thakar | QLYS | Stock Option (right to buy) | Options Exercise | -50% | -6,500 | 6,500 | 14 Nov 2025 | Direct | ||
| Sumedh S. Thakar | QLYS | Common Stock | Sale | -0.85% | $341,094 | $155.04 | -2,200 | 256,800 | 12 Nov 2025 | Direct |
| Joo Mi Kim | QLYS | Common Stock | Tax liability | -2.99% | -3,802 | 123,274 | 01 Nov 2025 | Direct | ||
| Sumedh S. Thakar | QLYS | Common Stock | Tax liability | -2.28% | -6,043 | 259,000 | 01 Nov 2025 | Direct | ||
| Bruce K. Posey | QLYS | Common Stock | Tax liability | -2.95% | -2,279 | 74,853 | 01 Nov 2025 | Direct | ||
| Bradford L. Brooks | QLYS | Common Stock | Award | 3,198 | 3,198 | 30 Oct 2025 | Direct | |||
| Joo Mi Kim | QLYS | Common Stock | Award | 36.8% | 34,212 | 127,076 | 30 Oct 2025 | Direct | ||
| Bruce K. Posey | QLYS | Common Stock | Award | 35.9% | 20,357 | 77,132 | 30 Oct 2025 | Direct | ||
| Sumedh S. Thakar | QLYS | Common Stock | Award | 30% | 61,092 | 265,043 | 30 Oct 2025 | Direct | ||
| Bruce K. Posey | QLYS | Common Stock | Sale | -0.94% | $68,646 | $127.12 | -540 | 56,775 | 20 Oct 2025 | Direct |
| Sumedh S. Thakar | QLYS | Common Stock | Sale | -4% | $1,078,007 | $126.82 | -8,500 | 203,951 | 14 Oct 2025 | Direct |
| Sumedh S. Thakar | QLYS | Common Stock | Options Exercise | 3.16% | 6,500 | 212,451 | 14 Oct 2025 | Direct | ||
| Sumedh S. Thakar | QLYS | Stock Option (right to buy) | Options Exercise | -33.3% | -6,500 | 13,000 | 14 Oct 2025 | Direct | ||
| Joo Mi Kim | QLYS | Common Stock | Sale | -0.84% | $101,656 | $129.17 | -787 | 92,864 | 06 Oct 2025 | Direct |
| Bruce K. Posey | QLYS | Common Stock | Sale | -0.91% | $71,497 | $136.18 | -525 | 57,315 | 22 Sep 2025 | Direct |
| Sumedh S. Thakar | QLYS | Common Stock | Sale | -3.96% | $1,126,184 | $132.49 | -8,500 | 205,951 | 15 Sep 2025 | Direct |
| Sumedh S. Thakar | QLYS | Common Stock | Options Exercise | 3.13% | 6,500 | 214,451 | 15 Sep 2025 | Direct | ||
| Sumedh S. Thakar | QLYS | Stock Option (right to buy) | Options Exercise | -25% | -6,500 | 19,500 | 15 Sep 2025 | Direct | ||
| Joo Mi Kim | QLYS | Common Stock | Sale | -0.89% | $113,769 | $134.80 | -844 | 93,651 | 05 Sep 2025 | Direct |
* An asterisk sign (*) next to the price indicates that the price is likely invalid.