QUALYS INC (QLYS) — insider trading
Information Technology · NASDAQ
QUALYS INC (QLYS) has 98 reported SEC Form 4 insider transactions in our data, including 86 open-market sales among the most recent 98 (latest 2026-09-21).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-21 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 199 | $181.03 | $36.0K | Form 4 |
| 2026-09-21 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 327 | $179.95 | $58.8K | Form 4 |
| 2026-09-21 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 241 | $178.96 | $43.1K | Form 4 |
| 2026-09-21 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 27 | $177.98 | $4.8K | Form 4 |
| 2026-09-21 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 72 | $175.54 | $12.6K | Form 4 |
| 2026-09-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 100 | $174.71 | $17.5K | Form 4 |
| 2026-09-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 500 | $173.92 | $87.0K | Form 4 |
| 2026-09-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 1,500 | $172.92 | $259.4K | Form 4 |
| 2026-09-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 100 | $170.90 | $17.1K | Form 4 |
| 2026-09-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 200 | $169.35 | $33.9K | Form 4 |
| 2026-09-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 100 | $167.58 | $16.8K | Form 4 |
| 2026-09-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 100 | $165.94 | $16.6K | Form 4 |
| 2026-09-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 300 | $162.43 | $48.7K | Form 4 |
| 2026-09-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 200 | $159.28 | $31.9K | Form 4 |
| 2026-09-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 100 | $154.39 | $15.4K | Form 4 |
| 2026-09-02 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 102 | $172.37 | $17.6K | Form 4 |
| 2026-09-02 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 265 | $171.14 | $45.4K | Form 4 |
| 2026-09-02 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 204 | $170.05 | $34.7K | Form 4 |
| 2026-09-02 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 166 | $168.75 | $28.0K | Form 4 |
| 2026-09-02 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 293 | $167.49 | $49.1K | Form 4 |
| 2026-09-02 | Berquist Thomas | Director | Open-market sale | 511 | $175.27 | $89.6K | Form 4 |
| 2026-08-20 | Pfeiffer Wendy | Director | Open-market sale | 500 | $185.00 | $92.5K | Form 4 |
| 2026-08-20 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 280 | $185.91 | $52.1K | Form 4 |
| 2026-08-20 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 96 | $184.25 | $17.7K | Form 4 |
| 2026-08-20 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 393 | $183.58 | $72.1K | Form 4 |
| 2026-08-20 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 97 | $181.99 | $17.7K | Form 4 |
| 2026-08-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 100 | $192.27 | $19.2K | Form 4 |
| 2026-08-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 600 | $190.49 | $114.3K | Form 4 |
| 2026-08-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 1,300 | $189.41 | $246.2K | Form 4 |
| 2026-08-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 794 | $188.07 | $149.3K | Form 4 |
| 2026-08-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 406 | $186.28 | $75.6K | Form 4 |
| 2026-08-03 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 100 | $155.12 | $15.5K | Form 4 |
| 2026-08-03 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 827 | $154.51 | $127.8K | Form 4 |
| 2026-08-03 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 300 | $152.78 | $45.8K | Form 4 |
| 2026-08-03 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 200 | $151.47 | $30.3K | Form 4 |
| 2026-08-03 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 100 | $148.54 | $14.9K | Form 4 |
| 2026-08-03 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 100 | $147.22 | $14.7K | Form 4 |
| 2026-08-01 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Shares withheld for taxes / exercise cost | 6,748 | $144.75 | $976.8K | Form 4 |
| 2026-08-01 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Shares withheld for taxes / exercise cost | 2,269 | $144.75 | $328.4K | Form 4 |
| 2026-08-01 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Shares withheld for taxes / exercise cost | 3,845 | $144.75 | $556.6K | Form 4 |
| 2026-07-20 | Pfeiffer Wendy | Director | Open-market sale | 500 | $158.19 | $79.1K | Form 4 |
| 2026-07-20 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 43 | $160.18 | $6.9K | Form 4 |
| 2026-07-20 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 262 | $159.35 | $41.7K | Form 4 |
| 2026-07-20 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 334 | $158.06 | $52.8K | Form 4 |
| 2026-07-20 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 243 | $156.71 | $38.1K | Form 4 |
| 2026-07-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 200 | $163.57 | $32.7K | Form 4 |
| 2026-07-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 200 | $162.40 | $32.5K | Form 4 |
| 2026-07-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 1,570 | $161.69 | $253.9K | Form 4 |
| 2026-07-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 730 | $160.81 | $117.4K | Form 4 |
| 2026-07-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 200 | $157.75 | $31.5K | Form 4 |
| 2026-07-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 100 | $155.30 | $15.5K | Form 4 |
| 2026-07-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 100 | $151.53 | $15.2K | Form 4 |
| 2026-07-14 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 100 | $149.30 | $14.9K | Form 4 |
| 2026-07-06 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 1,000 | $155.00 | $155.0K | Form 4 |
| 2026-07-02 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 965 | $143.44 | $138.4K | Form 4 |
| 2026-06-30 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 10,000 | $140.00 | $1.40M | Form 4 |
| 2026-06-30 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 10,000 | $135.00 | $1.35M | Form 4 |
| 2026-06-30 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 10,000 | $130.00 | $1.30M | Form 4 |
| 2026-06-29 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 2,306 | $127.66 | $294.4K | Form 4 |
| 2026-06-29 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 4,994 | $126.96 | $634.0K | Form 4 |
| 2026-06-29 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 2,700 | $125.60 | $339.1K | Form 4 |
| 2026-06-26 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 200 | $121.10 | $24.2K | Form 4 |
| 2026-06-26 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 9,800 | $120.47 | $1.18M | Form 4 |
| 2026-06-22 | Pfeiffer Wendy | Director | Open-market sale | 500 | $110.55 | $55.3K | Form 4 |
| 2026-06-22 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 123 | $111.73 | $13.7K | Form 4 |
| 2026-06-22 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 41 | $110.48 | $4.5K | Form 4 |
| 2026-06-22 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 188 | $109.84 | $20.6K | Form 4 |
| 2026-06-22 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 465 | $108.80 | $50.6K | Form 4 |
| 2026-06-22 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 48 | $107.40 | $5.2K | Form 4 |
| 2026-06-15 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 1,500 | $115.66 | $173.5K | Form 4 |
| 2026-06-15 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 1,500 | $114.31 | $171.5K | Form 4 |
| 2026-06-15 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 200 | $112.08 | $22.4K | Form 4 |
| 2026-06-12 | Hank Jeffrey P | Director | Open-market sale | 470 | $110.75 | $52.1K | Form 4 |
| 2026-06-12 | Berquist Thomas | Director | Open-market sale | 939 | $110.75 | $104.0K | Form 4 |
| 2026-06-11 | Hank Jeffrey P | Director | Open-market sale | 470 | $108.88 | $51.2K | Form 4 |
| 2026-06-10 | Berquist Thomas | Director | Grant / award / vesting | 2,628 | — | $0 | Form 4 |
| 2026-06-10 | Brooks Bradford L. | Director | Grant / award / vesting | 2,628 | — | $0 | Form 4 |
| 2026-06-10 | Pfeiffer Wendy | Director | Grant / award / vesting | 2,628 | — | $0 | Form 4 |
| 2026-06-10 | Rogers Kristi Marie | Director | Grant / award / vesting | 2,628 | — | $0 | Form 4 |
| 2026-06-10 | Hank Jeffrey P | Director | Grant / award / vesting | 2,628 | — | $0 | Form 4 |
| 2026-06-10 | Zangardi John A. | Director | Grant / award / vesting | 2,628 | — | $0 | Form 4 |
| 2026-06-02 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 419 | $113.29 | $47.5K | Form 4 |
| 2026-06-02 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 153 | $112.05 | $17.1K | Form 4 |
| 2026-06-02 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 153 | $110.60 | $16.9K | Form 4 |
| 2026-06-02 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 306 | $109.79 | $33.6K | Form 4 |
| 2026-06-01 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 39 | $115.57 | $4.5K | Form 4 |
| 2026-06-01 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 10,861 | $114.97 | $1.25M | Form 4 |
| 2026-06-01 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 1,700 | $113.95 | $193.7K | Form 4 |
| 2026-06-01 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Open-market sale | 600 | $112.46 | $67.5K | Form 4 |
| 2026-05-22 | Pfeiffer Wendy | Director | Open-market sale | 500 | $101.21 | $50.6K | Form 4 |
| 2026-05-20 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 7 | $101.17 | $708 | Form 4 |
| 2026-05-20 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 858 | $100.43 | $86.2K | Form 4 |
| 2026-05-19 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Open-market sale | 1,627 | $100.17 | $163.0K | Form 4 |
| 2026-05-19 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 50 | $101.23 | $5.1K | Form 4 |
| 2026-05-19 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Open-market sale | 2,334 | $100.16 | $233.8K | Form 4 |
| 2026-05-01 | Thakar Sumedh S | Director, Officer (CEO & PRESIDENT) | Shares withheld for taxes / exercise cost | 6,748 | $88.53 | $597.4K | Form 4 |
| 2026-05-01 | Kim Joo Mi | Officer (CHIEF FINANCIAL OFFICER) | Shares withheld for taxes / exercise cost | 3,845 | $88.53 | $340.4K | Form 4 |
| 2026-05-01 | POSEY BRUCE K | Officer (CHIEF LEGAL OFFICER) | Shares withheld for taxes / exercise cost | 2,270 | $88.53 | $201.0K | Form 4 |
Ask the chat about QLYS's insider activity →
Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: QUALYS INC (QLYS).
Last updated 2026-09-21 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.