Qualys Inc (QLYS)
Who owns Qualys Inc (QLYS)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 99.1% of the shares are freely tradable; institutional investors hold 109.1%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 15.22 | 5,360,596 | -0.2 | 03/31/2026 |
| Vanguard Group Inc | 12.40 | 4,365,407 | -0.8 | 12/31/2025 |
| Vanguard Portfolio Management, LLC | 7.20 | 2,537,126 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.50 | 1,584,606 | +0.0 | 03/31/2026 |
| State Street Corp | 3.94 | 1,388,720 | +3.0 | 03/31/2026 |
| Geode Capital Management, LLC | 3.75 | 1,320,909 | +5.2 | 03/31/2026 |
| AQR Capital Management LLC | 2.95 | 1,038,928 | +64.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| L&G Cyber Security ETF | 4.04 | 1,422,881 | +0.1 | 05/29/2026 |
| iShares Core S&P Mid-Cap ETF | 3.45 | 1,216,482 | +0.0 | 05/29/2026 |
| Vanguard Total Stock Mkt Idx Inv | 3.21 | 1,129,899 | +1.1 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 20. Jul 2026 | Pfeiffer Wendy | Director | Sell | 500 | 158.19 | 79,095 |
| 20. Jul 2026 | Posey Bruce K | CHIEF LEGAL OFFICER | Sell | 43 | 160.18 | 6,888 |
| 20. Jul 2026 | Posey Bruce K | CHIEF LEGAL OFFICER | Sell | 262 | 159.35 | 41,749 |
| 20. Jul 2026 | Posey Bruce K | CHIEF LEGAL OFFICER | Sell | 334 | 158.06 | 52,791 |
| 20. Jul 2026 | Posey Bruce K | CHIEF LEGAL OFFICER | Sell | 243 | 156.71 | 38,081 |
| 14. Jul 2026 | Thakar Sumedh S | CEO & PRESIDENT | Sell | 1,570 | 161.69 | 253,861 |
| 14. Jul 2026 | Thakar Sumedh S | CEO & PRESIDENT | Sell | 730 | 160.81 | 117,395 |
| 14. Jul 2026 | Thakar Sumedh S | CEO & PRESIDENT | Sell | 200 | 163.57 | 32,713 |
| 14. Jul 2026 | Thakar Sumedh S | CEO & PRESIDENT | Sell | 100 | 155.30 | 15,530 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.