QUALYS, INC. insider trading
QLYS$198.68+5.68 (+2.94% today)
“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.”
Insider Trading vs Stock Price
Insider Trading vs Stock Price data
Showing the 1Y range: Oct 6, 2025 to Oct 5, 2026. Price (+53.3%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Open market purchase
Open market sellNet dollar flow · Buy / Sell balance
PremiumQ2 '25Q3 '25Q4 '25Q1 '26Q2 '26Q3 '26
Unlock quarterly net flowKey players
- SSSumedh S. Thakar0.5213%
- JMJoo Mi Kim0.216%
- BKBruce K. Posey0.1696%
- JPJeffrey P. Hank0.045%
- WPWendy Pfeiffer0.0338%
- KMKristi Marie Rogers0.0324%
- JAJohn A. Zangardi0.0194%
- TBThomas Berquist0.0181%
- BLBradford L. Brooks0.0168%
AI Activity Analysis
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Insider activity
Fromto
| Company | Insider / role | Action | ΔOwn | Avg price | Amount | ||
|---|---|---|---|---|---|---|---|
| QLYS | Bruce K. Posey | Open market sell$36K | -0.3% | $181.03 | $36K | Sep 21, 2026 | Sep 22, 2026 |
| QLYS | Bruce K. Posey | Open market sell$58.8K | -0.6% | $179.95 | $58.8K | Sep 21, 2026 | Sep 22, 2026 |
| QLYS | Bruce K. Posey | Open market sell$43.1K | -0.4% | $178.96 | $43.1K | Sep 21, 2026 | Sep 22, 2026 |
| QLYS | Bruce K. Posey | Open market sell$4.81K | -0.1% | $177.98 | $4.81K | Sep 21, 2026 | Sep 22, 2026 |
| QLYS | Bruce K. Posey | Open market sell$12.6K | -0.1% | $175.54 | $12.6K | Sep 21, 2026 | Sep 22, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$17.5K | -0.1% | $174.71 | $17.5K | Sep 14, 2026 | Sep 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$87K | -0.3% | $173.92 | $87K | Sep 14, 2026 | Sep 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$259K | -0.8% | $172.92 | $259K | Sep 14, 2026 | Sep 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$17.1K | -0.1% | $170.90 | $17.1K | Sep 14, 2026 | Sep 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$33.9K | -0.1% | $169.35 | $33.9K | Sep 14, 2026 | Sep 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$16.8K | -0.1% | $167.58 | $16.8K | Sep 14, 2026 | Sep 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$16.6K | -0.1% | $165.94 | $16.6K | Sep 14, 2026 | Sep 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$48.7K | -0.2% | $162.43 | $48.7K | Sep 14, 2026 | Sep 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$31.9K | -0.1% | $159.28 | $31.9K | Sep 14, 2026 | Sep 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$15.4K | -0.1% | $154.39 | $15.4K | Sep 14, 2026 | Sep 15, 2026 |
| QLYS | Joo Mi Kim | Open market sell$17.6K | -0.1% | $172.37 | $17.6K | Sep 2, 2026 | Sep 3, 2026 |
| QLYS | Joo Mi Kim | Open market sell$45.4K | -0.4% | $171.14 | $45.4K | Sep 2, 2026 | Sep 3, 2026 |
| QLYS | Joo Mi Kim | Open market sell$34.7K | -0.3% | $170.05 | $34.7K | Sep 2, 2026 | Sep 3, 2026 |
| QLYS | Joo Mi Kim | Open market sell$28K | -0.2% | $168.75 | $28K | Sep 2, 2026 | Sep 3, 2026 |
| QLYS | Joo Mi Kim | Open market sell$49.1K | -0.4% | $167.49 | $49.1K | Sep 2, 2026 | Sep 3, 2026 |
| QLYS | Thomas Berquist | Open market sell$89.6K | -7.5% | $175.27 | $89.6K | Sep 2, 2026 | Sep 3, 2026 |
| QLYS | Wendy Pfeiffer | Open market sell$92.5K | -4.1% | $185.00 | $92.5K | Aug 20, 2026 | Aug 21, 2026 |
| QLYS | Bruce K. Posey | Open market sell$52.1K | -0.5% | $185.91 | $52.1K | Aug 20, 2026 | Aug 21, 2026 |
| QLYS | Bruce K. Posey | Open market sell$17.7K | -0.2% | $184.25 | $17.7K | Aug 20, 2026 | Aug 21, 2026 |
| QLYS | Bruce K. Posey | Open market sell$72.1K | -0.7% | $183.58 | $72.1K | Aug 20, 2026 | Aug 21, 2026 |
| QLYS | Bruce K. Posey | Open market sell$17.7K | -0.2% | $181.99 | $17.7K | Aug 20, 2026 | Aug 21, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$19.2K | -0.1% | $192.27 | $19.2K | Aug 14, 2026 | Aug 17, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$114K | -0.3% | $190.49 | $114K | Aug 14, 2026 | Aug 17, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$246K | -0.7% | $189.41 | $246K | Aug 14, 2026 | Aug 17, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$149K | -0.4% | $188.07 | $149K | Aug 14, 2026 | Aug 17, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$75.6K | -0.2% | $186.28 | $75.6K | Aug 14, 2026 | Aug 17, 2026 |
| QLYS | Joo Mi Kim | Open market sell$15.5K | -0.1% | $155.12 | $15.5K | Aug 3, 2026 | Aug 4, 2026 |
| QLYS | Joo Mi Kim | Open market sell$128K | -1.1% | $154.51 | $128K | Aug 3, 2026 | Aug 4, 2026 |
| QLYS | Joo Mi Kim | Open market sell$45.8K | -0.4% | $152.78 | $45.8K | Aug 3, 2026 | Aug 4, 2026 |
| QLYS | Joo Mi Kim | Open market sell$30.3K | -0.3% | $151.47 | $30.3K | Aug 3, 2026 | Aug 4, 2026 |
| QLYS | Joo Mi Kim | Open market sell$14.9K | -0.1% | $148.54 | $14.9K | Aug 3, 2026 | Aug 4, 2026 |
| QLYS | Joo Mi Kim | Open market sell$14.7K | -0.1% | $147.22 | $14.7K | Aug 3, 2026 | Aug 4, 2026 |
| QLYS | Wendy Pfeiffer | Open market sell$79.1K | -3.9% | $158.19 | $79.1K | Jul 20, 2026 | Jul 21, 2026 |
| QLYS | Bruce K. Posey | Open market sell$6.89K | -0.1% | $160.18 | $6.89K | Jul 20, 2026 | Jul 21, 2026 |
| QLYS | Bruce K. Posey | Open market sell$41.7K | -0.4% | $159.35 | $41.7K | Jul 20, 2026 | Jul 21, 2026 |
| QLYS | Bruce K. Posey | Open market sell$52.8K | -0.5% | $158.06 | $52.8K | Jul 20, 2026 | Jul 21, 2026 |
| QLYS | Bruce K. Posey | Open market sell$38.1K | -0.4% | $156.71 | $38.1K | Jul 20, 2026 | Jul 21, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$32.7K | -0.1% | $163.57 | $32.7K | Jul 14, 2026 | Jul 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$32.5K | -0.1% | $162.40 | $32.5K | Jul 14, 2026 | Jul 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$254K | -0.8% | $161.69 | $254K | Jul 14, 2026 | Jul 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$117K | -0.4% | $160.81 | $117K | Jul 14, 2026 | Jul 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$31.5K | -0.1% | $157.75 | $31.5K | Jul 14, 2026 | Jul 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$15.5K | -0.1% | $155.30 | $15.5K | Jul 14, 2026 | Jul 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$15.2K | -0.1% | $151.53 | $15.2K | Jul 14, 2026 | Jul 15, 2026 |
| QLYS | Sumedh S. Thakar | Open market sell$14.9K | -0.1% | $149.30 | $14.9K | Jul 14, 2026 | Jul 15, 2026 |