QUALYS, INC. Insider Trading Activity
Every SEC Form 4 insider transaction reported for QUALYS, INC. (QLYS), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are QLYS insiders buying or selling?
In the last 12 months, QUALYS, INC. insiders reported 0 open-market purchases ($0) and 44 sales ($23.1M) — net selling of $23.1M. Since January 2018, Trabud has recorded 374 Form 4 filings for QLYS: 1 buys ($627.9) and 373 sells ($429.8M).
Source: SEC EDGAR Form 4
What stands out
- No QUALYS, INC. insider made an open-market purchase in the last 12 months; the 44 reported open-market sales totaled $23.1M.
Key Statistics (January 2018 – Oct 15, 2026)
Total Form 4 filings
374
SEC EDGAR
Insider filers
16
Insider buys (1)
$627.9
Insider sells (373)
$429.8M
Insider sentiment
Net sellingNet insider flow of $429.8M in net selling since January 2018, and $23.1M in net selling over the last 12 months.
Recent QLYS insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Oct 15, 2026 | Sumedh S Thakar | CEO & PRESIDENT | Sale | 3.2K | $190.36 | $609.1K | SEC ↗ |
| Sep 23, 2026 | Bruce K Posey | CHIEF LEGAL OFFICER | Sale | 866 | $179.49 | $155.4K | SEC ↗ |
| Sep 16, 2026 | Sumedh S Thakar | CEO & PRESIDENT | Sale | 3.2K | $170.05 | $544.2K | SEC ↗ |
| Sep 3, 2026 | Thomas Berquist | Director | Sale | 511 | $175.27 | $89.6K | SEC ↗ |
| Sep 3, 2026 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | Sale | 1.0K | $169.62 | $174.7K | SEC ↗ |
| Aug 21, 2026 | Bruce K Posey | CHIEF LEGAL OFFICER | Sale | 866 | $184.23 | $159.5K | SEC ↗ |
| Aug 21, 2026 | Wendy Pfeiffer | Director | Sale | 500 | $185.00 | $92.5K | SEC ↗ |
| Aug 17, 2026 | Sumedh S Thakar | CEO & PRESIDENT | Sale | 3.2K | $188.97 | $604.7K | SEC ↗ |
| Aug 4, 2026 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | Sale | 1.6K | $153.04 | $249.0K | SEC ↗ |
| Jul 21, 2026 | Bruce K Posey | CHIEF LEGAL OFFICER | Sale | 882 | $158.17 | $139.5K | SEC ↗ |
| Jul 21, 2026 | Wendy Pfeiffer | Director | Sale | 500 | $158.19 | $79.1K | SEC ↗ |
| Jul 15, 2026 | Sumedh S Thakar | CEO & PRESIDENT | Sale | 3.2K | $160.50 | $513.6K | SEC ↗ |
| Jul 6, 2026 | Bruce K Posey | CHIEF LEGAL OFFICER | Sale | 1.0K | $155.00 | $155.0K | SEC ↗ |
| Jul 6, 2026 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | Sale | 965 | $143.44 | $138.4K | SEC ↗ |
| Jul 2, 2026 | Sumedh S Thakar | CEO & PRESIDENT | Sale | 30.0K | $135.00 | $4.0M | SEC ↗ |
| Jun 30, 2026 | Sumedh S Thakar | CEO & PRESIDENT | Sale | 10.0K | $126.75 | $1.3M | SEC ↗ |
| Jun 29, 2026 | Sumedh S Thakar | CEO & PRESIDENT | Sale | 10.0K | $120.48 | $1.2M | SEC ↗ |
| Jun 23, 2026 | Bruce K Posey | CHIEF LEGAL OFFICER | Sale | 865 | $109.44 | $94.7K | SEC ↗ |
| Jun 23, 2026 | Wendy Pfeiffer | Director | Sale | 500 | $110.55 | $55.3K | SEC ↗ |
| Jun 16, 2026 | Sumedh S Thakar | CEO & PRESIDENT | Sale | 3.2K | $114.80 | $367.4K | SEC ↗ |
| Jun 15, 2026 | Thomas Berquist | Director | Sale | 939 | $110.75 | $104.0K | SEC ↗ |
| Jun 15, 2026 | Jeffrey P Hank | Director | Sale | 940 | $109.82 | $103.2K | SEC ↗ |
| Jun 3, 2026 | Joo Mi Kim | CHIEF FINANCIAL OFFICER | Sale | 1.0K | $111.67 | $115.1K | SEC ↗ |
| Jun 2, 2026 | Sumedh S Thakar | CEO & PRESIDENT | Sale | 13.2K | $114.73 | $1.5M | SEC ↗ |
| May 26, 2026 | Wendy Pfeiffer | Director | Sale | 500 | $101.21 | $50.6K | SEC ↗ |
Showing the 25 most recent of 374 Form 4 filings for QUALYS, INC..
Most active QLYS insiders
- Sumedh S Thakar129 filings
- Bruce K Posey91 filings
- Joo Mi Kim37 filings
- Melissa B Fisher24 filings
- Jeffrey P Hank20 filings
Ask anything about QLYS insider activity
Use Trabud's AI agent to query QUALYS, INC.'s Form 4 history in plain English — "Show me QLYS CEO purchases this year" or compare it against any other ticker.
Open the AI agentQLYS insider trading FAQ
Are QUALYS, INC. insiders buying or selling?
In the last 12 months, QUALYS, INC. insiders reported 0 open-market purchases ($0) and 44 sales ($23.1M) — net selling of $23.1M. Since January 2018, Trabud has recorded 374 Form 4 filings for QLYS: 1 buys ($627.9) and 373 sells ($429.8M). Over the full record that is net selling of $429.8M.
How many insiders trade QLYS stock?
16 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for QUALYS, INC.. The most recent filing was accepted on Oct 15, 2026.
Where does Trabud get QLYS insider trading data?
All QLYS insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.