Qualys, Inc. (QLYS) Insider Trading
Over the last 3 months, QLYS insiders made 0 open-market buys and 41 sales, a net sale of -$6.3M (SEC Form 4). Over the last 6 months, 352 institutions increased and 267 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
41
Net (3m)
-$6.3M
Insider trades by month Buys Sells
Feb
Mar
May
Jun
Jul
Aug
Context3-month price +63.6%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 21, 2026 | POSEY BRUCE Kofficer: CHIEF LEGAL OFFICER | Sell | 280 | $185.91 |
| Aug 21, 2026 | POSEY BRUCE Kofficer: CHIEF LEGAL OFFICER | Sell | 96 | $184.25 |
| Aug 21, 2026 | POSEY BRUCE Kofficer: CHIEF LEGAL OFFICER | Sell | 393 | $183.58 |
| Aug 21, 2026 | POSEY BRUCE Kofficer: CHIEF LEGAL OFFICER | Sell | 97 | $181.99 |
| Aug 21, 2026 | Pfeiffer Wendydirector | Sell | 500 | $185.00 |
| Aug 17, 2026 | Thakar Sumedh Sdirector, officer: CEO & PRESIDENT | Sell | 600 | $190.49 |
| Aug 17, 2026 | Thakar Sumedh Sdirector, officer: CEO & PRESIDENT | Sell | 406 | $186.28 |
| Aug 17, 2026 | Thakar Sumedh Sdirector, officer: CEO & PRESIDENT | Sell | 794 | $188.07 |
| Aug 17, 2026 | Thakar Sumedh Sdirector, officer: CEO & PRESIDENT | Sell | 1,300 | $189.41 |
| Aug 17, 2026 | Thakar Sumedh Sdirector, officer: CEO & PRESIDENT | Sell | 100 | $192.27 |
| Aug 4, 2026 | Kim Joo Miofficer: CHIEF FINANCIAL OFFICER | Sell | 100 | $147.22 |
| Aug 4, 2026 | Kim Joo Miofficer: CHIEF FINANCIAL OFFICER | Sell | 200 | $151.47 |
| Aug 4, 2026 | Kim Joo Miofficer: CHIEF FINANCIAL OFFICER | Sell | 300 | $152.78 |
| Aug 4, 2026 | Kim Joo Miofficer: CHIEF FINANCIAL OFFICER | Sell | 827 | $154.51 |
| Aug 3, 2026 | Kim Joo Miofficer: CHIEF FINANCIAL OFFICER | Tax | 3,845 | $144.75 |
| Aug 3, 2026 | POSEY BRUCE Kofficer: CHIEF LEGAL OFFICER | Tax | 2,269 | $144.75 |
| Aug 3, 2026 | Thakar Sumedh Sdirector, officer: CEO & PRESIDENT | Tax | 6,748 | $144.75 |
| Jul 21, 2026 | Pfeiffer Wendydirector | Sell | 500 | $158.19 |
| Jul 21, 2026 | POSEY BRUCE Kofficer: CHIEF LEGAL OFFICER | Sell | 43 | $160.18 |
| Jul 21, 2026 | POSEY BRUCE Kofficer: CHIEF LEGAL OFFICER | Sell | 262 | $159.35 |
| Jul 21, 2026 | POSEY BRUCE Kofficer: CHIEF LEGAL OFFICER | Sell | 334 | $158.06 |
| Jul 21, 2026 | POSEY BRUCE Kofficer: CHIEF LEGAL OFFICER | Sell | 243 | $156.71 |
| Jul 15, 2026 | Thakar Sumedh Sdirector, officer: CEO & PRESIDENT | Sell | 1,570 | $161.69 |
| Jul 15, 2026 | Thakar Sumedh Sdirector, officer: CEO & PRESIDENT | Sell | 100 | $149.30 |
| Jul 15, 2026 | Thakar Sumedh Sdirector, officer: CEO & PRESIDENT | Sell | 730 | $160.81 |
| Jul 15, 2026 | Thakar Sumedh Sdirector, officer: CEO & PRESIDENT | Sell | 200 | $157.75 |
| Jul 6, 2026 | Kim Joo Miofficer: CHIEF FINANCIAL OFFICER | Sell | 965 | $143.44 |
| Jul 6, 2026 | POSEY BRUCE Kofficer: CHIEF LEGAL OFFICER | Sell | 1,000 | $155.00 |
| Jul 1, 2026 | Thakar Sumedh Sdirector, officer: CEO & PRESIDENT | Sell | 10,000 | $130.00 |
| Jun 30, 2026 | Thakar Sumedh Sdirector, officer: CEO & PRESIDENT | Sell | 2,700 | $125.60 |
Source: QLYS SEC Form 4 filings, latest Aug 21, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their QLYS positions over the last 6 months (SEC Form 13F).
Increased
352
New positions
153
Reduced
267
Sold out
71
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 5.8M | Aug 7, 2026 |
| BLACKROCK, INC. | Reduced | 5.4M | May 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 2.7M | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 2.5M | May 8, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 1.6M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 1.6M | May 15, 2026 |
| STATE STREET CORP | Increased | 1.5M | Aug 7, 2026 |
| Legal & General Group Plc | Increased | 1.4M | Aug 14, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 1.4M | Aug 12, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Increased | 1.4M | Aug 14, 2026 |
| STATE STREET CORP | Increased | 1.4M | May 15, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 1.3M | May 15, 2026 |
| FIRST TRUST ADVISORS LP | Increased | 1.1M | Aug 11, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Increased | 1.0M | May 15, 2026 |
| LEGAL & GENERAL GROUP PLC | Reduced | 1.0M | May 8, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.