Qualys, Inc. (QLYS) Insider Trading
Directors, officers and holders of more than 10% of QLYS report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.
Recent Form 4 transactions
The 50 most recent of 441 transactions on file: 0 with code P, 48 with code S and 2 with other codes.
| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 20, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 449 | $190.49 | $85,529 |
| Oct 20, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 7 | $185.31 | $1,297 |
| Oct 20, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 35 | $187.25 | $6,554 |
| Oct 20, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 244 | $189.52 | $46,242 |
| Oct 20, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 84 | $184.33 | $15,484 |
| Oct 20, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 62 | $191.26 | $11,858 |
| Oct 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 500 | $192.84 | $96,419 |
| Oct 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 400 | $189.99 | $75,994 |
| Oct 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 400 | $188.03 | $75,210 |
| Oct 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 1,500 | $189.20 | $283,803 |
| Oct 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 400 | $194.30 | $77,721 |
| Sep 21, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 199 | $181.03 | $36,025 |
| Sep 21, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 327 | $179.95 | $58,844 |
| Sep 21, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 72 | $175.54 | $12,639 |
| Sep 21, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 27 | $177.98 | $4,806 |
| Sep 21, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 241 | $178.96 | $43,129 |
| Sep 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 100 | $174.71 | $17,471 |
| Sep 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 100 | $167.58 | $16,758 |
| Sep 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 500 | $173.92 | $86,960 |
| Sep 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 100 | $165.94 | $16,594 |
| Sep 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 300 | $162.43 | $48,729 |
| Sep 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 200 | $169.34 | $33,869 |
| Sep 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 200 | $159.28 | $31,855 |
| Sep 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 1,500 | $172.92 | $259,387 |
| Sep 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 100 | $154.39 | $15,439 |
| Sep 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 100 | $170.90 | $17,090 |
| Sep 2, 2026 | Kim Joo Mi | CHIEF FINANCIAL OFFICER | S Sale | 204 | $170.05 | $34,690 |
| Sep 2, 2026 | Kim Joo Mi | CHIEF FINANCIAL OFFICER | S Sale | 102 | $172.37 | $17,582 |
| Sep 2, 2026 | Kim Joo Mi | CHIEF FINANCIAL OFFICER | S Sale | 265 | $171.14 | $45,353 |
| Sep 2, 2026 | Kim Joo Mi | CHIEF FINANCIAL OFFICER | S Sale | 166 | $168.75 | $28,013 |
| Sep 2, 2026 | Berquist Thomas | Director | S Sale | 511 | $175.27 | $89,563 |
| Sep 2, 2026 | Kim Joo Mi | CHIEF FINANCIAL OFFICER | S Sale | 293 | $167.49 | $49,074 |
| Aug 20, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 97 | $181.99 | $17,653 |
| Aug 20, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 393 | $183.58 | $72,148 |
| Aug 20, 2026 | Pfeiffer Wendy | Director | S Sale | 500 | $185.00 | $92,500 |
| Aug 20, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 96 | $184.25 | $17,688 |
| Aug 20, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | S Sale | 280 | $185.91 | $52,056 |
| Aug 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 600 | $190.49 | $114,295 |
| Aug 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 406 | $186.28 | $75,628 |
| Aug 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 1,300 | $189.41 | $246,232 |
| Aug 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 100 | $192.27 | $19,227 |
| Aug 14, 2026 | Thakar Sumedh S | CEO & PRESIDENT | S Sale | 794 | $188.07 | $149,326 |
| Aug 3, 2026 | Kim Joo Mi | CHIEF FINANCIAL OFFICER | S Sale | 100 | $148.54 | $14,854 |
| Aug 3, 2026 | Kim Joo Mi | CHIEF FINANCIAL OFFICER | S Sale | 200 | $151.47 | $30,294 |
| Aug 3, 2026 | Kim Joo Mi | CHIEF FINANCIAL OFFICER | S Sale | 100 | $155.12 | $15,512 |
| Aug 3, 2026 | Kim Joo Mi | CHIEF FINANCIAL OFFICER | S Sale | 300 | $152.78 | $45,834 |
| Aug 3, 2026 | Kim Joo Mi | CHIEF FINANCIAL OFFICER | S Sale | 827 | $154.51 | $127,779 |
| Aug 3, 2026 | Kim Joo Mi | CHIEF FINANCIAL OFFICER | S Sale | 100 | $147.22 | $14,722 |
| Aug 1, 2026 | POSEY BRUCE K | CHIEF LEGAL OFFICER | F Tax Payment | 2,269 | $144.75 | $328,438 |
| Aug 1, 2026 | Thakar Sumedh S | CEO & PRESIDENT | F Tax Payment | 6,748 | $144.75 | $976,773 |
The full Form 4 history is on the QLYS company page (Insider Trades card, View all).
Questions about this data
Which insider transactions are open-market trades?
Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.
How quickly are insider trades reported?
A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.
Who has to file Form 4?
Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.
Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.