QLYS (Qualys, Inc. Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by QLYS officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-03 | Thomas Berquist | Director | Sell | — | — |
| 2026-09-03 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | Sell | — | — |
| 2026-08-21 | Wendy Pfeiffer | Director | Sell | — | — |
| 2026-08-21 | BRUCE K POSEY | CHIEF LEGAL OFFICER | Sell | — | — |
| 2026-08-17 | Sumedh S Thakar | CEO & PRESIDENT | Sell | — | — |
| 2026-08-04 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | Sell | — | — |
| 2026-08-03 | Sumedh S Thakar | CEO & PRESIDENT | F | — | — |
| 2026-08-03 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | F | — | — |
| 2026-08-03 | BRUCE K POSEY | CHIEF LEGAL OFFICER | F | — | — |
| 2026-07-21 | Wendy Pfeiffer | Director | Sell | — | — |
| 2026-07-21 | BRUCE K POSEY | CHIEF LEGAL OFFICER | Sell | — | — |
| 2026-07-15 | Sumedh S Thakar | CEO & PRESIDENT | Sell | — | — |
| 2026-07-06 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | Sell | — | — |
| 2026-07-06 | BRUCE K POSEY | CHIEF LEGAL OFFICER | Sell | — | — |
| 2026-07-01 | Sumedh S Thakar | CEO & PRESIDENT | Sell | — | — |
| 2026-06-29 | Sumedh S Thakar | CEO & PRESIDENT | Sell | — | — |
| 2026-06-23 | Wendy Pfeiffer | Director | Sell | — | — |
| 2026-06-23 | BRUCE K POSEY | CHIEF LEGAL OFFICER | Sell | — | — |
| 2026-06-16 | Sumedh S Thakar | CEO & PRESIDENT | Sell | — | — |
| 2026-06-15 | Thomas Berquist | Director | Sell | — | — |
| 2026-06-15 | Jeffrey P Hank | Director | Sell | — | — |
| 2026-06-11 | Wendy Pfeiffer | Director | A | — | — |
| 2026-06-11 | Jeffrey P Hank | Director | A | — | — |
| 2026-06-11 | Kristi Marie Rogers | Director | A | — | — |
| 2026-06-11 | Bradford L. Brooks | Director | A | — | — |
| 2026-06-11 | Thomas Berquist | Director | A | — | — |
| 2026-06-11 | John A. Zangardi | Director | A | — | — |
| 2026-06-03 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | Sell | — | — |
| 2026-06-02 | Sumedh S Thakar | CEO & PRESIDENT | Sell | — | — |
| 2026-05-26 | Wendy Pfeiffer | Director | Sell | — | — |
| 2026-05-21 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | Sell | — | — |
| 2026-05-21 | BRUCE K POSEY | CHIEF LEGAL OFFICER | Sell | — | — |
| 2026-05-04 | Sumedh S Thakar | CEO & PRESIDENT | F | — | — |
| 2026-05-04 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | F | — | — |
| 2026-05-04 | BRUCE K POSEY | CHIEF LEGAL OFFICER | F | — | — |
| 2026-03-16 | BRUCE K POSEY | CHIEF LEGAL OFFICER | Sell | — | — |
| 2026-03-06 | BRUCE K POSEY | CHIEF LEGAL OFFICER | Sell | — | — |
| 2026-02-24 | BRUCE K POSEY | CHIEF LEGAL OFFICER | Sell | — | — |
| 2026-02-06 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | Sell | — | — |
| 2026-02-05 | Sumedh S Thakar | CEO & PRESIDENT | MIXED | — | — |
| 2026-02-05 | BRUCE K POSEY | CHIEF LEGAL OFFICER | MIXED | — | — |
| 2026-02-05 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | MIXED | — | — |
| 2026-02-03 | Sumedh S Thakar | CEO & PRESIDENT | F | — | — |
| 2026-02-03 | BRUCE K POSEY | CHIEF LEGAL OFFICER | F | — | — |
| 2026-02-03 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | MIXED | — | — |
| 2026-01-22 | BRUCE K POSEY | CHIEF LEGAL OFFICER | Sell | — | — |
| 2026-01-16 | Sumedh S Thakar | CEO & PRESIDENT | Sell | — | — |
| 2026-01-05 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | Sell | — | — |
| 2025-12-23 | BRUCE K POSEY | CHIEF LEGAL OFFICER | Sell | — | — |
| 2025-12-16 | Sumedh S Thakar | CEO & PRESIDENT | MIXED | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Chairman & CEO | 5,256,645 | — |
| — | 10%+ Owner | 4,229,476 | — |
| — | 10%+ Owner | 3,895,760 | — |
| — | 10%+ Owner | 2,233,652 | — |
| — | 10%+ Owner | 428,430 | — |
| — | Chief Financial Officer | 232,727 | — |
| — | Director | 200,776 | — |
| — | CEO & PRESIDENT | 183,538 | — |
| — | Chief Financial Officer | 172,633 | — |
| — | 10%+ Owner | 107,106 | — |
| — | Director | 90,495 | — |
| — | CHIEF FINANCIAL OFFICER | 74,713 | — |
| — | Director | 63,861 | — |
| — | VP Corp Dev & Strat Alliances | 60,720 | — |
| — | EVP, Worldwide Field Ops | 60,500 | — |
| — | CHIEF LEGAL OFFICER | 60,323 | — |
| — | Chief Revenue Officer | 44,854 | — |
| — | Director | 27,904 | — |
| — | Director | 17,118 | — |
| — | 10%+ Owner | 16,384 | — |
| — | Director | 16,046 | — |
| — | Director | 11,710 | — |
| — | Director | 11,224 | — |
| — | Chief Accounting Officer | 10,326 | — |
| — | VP, OPERATIONS | 10,000 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the QLYS quote page; the site-wide leaderboard is on the insider transactions hub.