As of March 23, 2026, the three largest insider holders of QLYS are Courtot Family Trust Philippe (TenPercentOwner, 3.85Mn shares), Sumedh S Thakar (Ceo President, 269.64K shares), Joo Mi Kim (Chief Financial Officer, 88.49K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Courtot Family Trust Philippe | - | 3,850,339 | 0 | 08 Nov, 2021 |
| Sumedh S Thakar | Ceo President | 269,641 | 0 | 05 Feb, 2026 |
| Joo Mi Kim | Chief Financial Officer | 88,489 | 0 | 06 Feb, 2026 |
| Bruce K Posey | Chief Legal Officer | 70,955 | 0 | 16 Mar, 2026 |
| Allan Peters | Chief Revenue Officer | 44,854 | 0 | 02 Mar, 2023 |
| Sandra E. Bergeron | - | 27,904 | 0 | 10 Jun, 2022 |
| Peter Pace | - | 17,118 | 0 | 09 Jun, 2023 |
| Jeffrey P Hank | - | 13,888 | 0 | 17 Jun, 2025 |
| Wendy Pfeiffer | - | 11,082 | 0 | 18 Aug, 2025 |
| Saikat Paul | Chief Accounting Officer | 10,326 | 0 | 17 Feb, 2022 |
| Kristi Marie Rogers | - | 8,596 | 0 | 25 Aug, 2025 |
| William Berutti | - | 6,561 | 0 | 09 Jun, 2023 |
| Thomas Berquist | - | 5,092 | 0 | 03 Sep, 2025 |
| John A. Zangardi | - | 4,071 | 0 | 29 Aug, 2025 |
| Bradford L. Brooks | - | 3,198 | 0 | 03 Nov, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 13 Mar, 2026 | Bruce K Posey | Common Stock | D | 65 | $100.09 | 70,955 | D | S |
| 05 Mar, 2026 | Bruce K Posey | Common Stock | D | 100 | $100.18 | 71,020 | D | S |
| 20 Feb, 2026 | Bruce K Posey | Common Stock | D | 210 | $103.13 | 71,391 | D | S |
| 20 Feb, 2026 | Bruce K Posey | Common Stock | D | 175 | $104.02 | 71,216 | D | S |
| 20 Feb, 2026 | Bruce K Posey | Common Stock | D | 96 | $105.09 | 71,120 | D | S |
| 04 Feb, 2026 | Joo Mi Kim | Common Stock | D | 500 | $125.25 | 94,788 | D | S |
| 04 Feb, 2026 | Joo Mi Kim | Common Stock | D | 400 | $126.74 | 94,388 | D | S |
| 04 Feb, 2026 | Joo Mi Kim | Common Stock | D | 2,051 | $128.20 | 92,337 | D | S |
| 04 Feb, 2026 | Joo Mi Kim | Common Stock | D | 3,648 | $129.16 | 88,689 | D | S |
| 04 Feb, 2026 | Joo Mi Kim | Common Stock | D | 200 | $129.76 | 88,489 | D | S |
| 03 Feb, 2026 | Sumedh S Thakar | Common Stock | A | 20,427 | $0.00 | 262,565 | D | A |
| 03 Feb, 2026 | Bruce K Posey | Common Stock | A | 60 | $0.00 | 66,999 | D | A |
| 03 Feb, 2026 | Joo Mi Kim | Common Stock | A | 5,280 | $0.00 | 93,769 | D | A |
| 03 Feb, 2026 | Sumedh S Thakar | Common Stock | D | 10,394 | $127.52 | 252,171 | D | F |
| 03 Feb, 2026 | Bruce K Posey | Common Stock | D | 31 | $127.52 | 66,968 | D | F |
| 03 Feb, 2026 | Joo Mi Kim | Common Stock | D | 2,683 | $127.52 | 91,086 | D | F |
| 03 Feb, 2026 | Joo Mi Kim | Common Stock | A | 3,657 | $0.00 | 94,743 | D | A |
| 03 Feb, 2026 | Sumedh S Thakar | Common Stock | A | 19,984 | $0.00 | 272,155 | D | A |
| 03 Feb, 2026 | Bruce K Posey | Common Stock | A | 2,854 | $0.00 | 69,822 | D | A |
| 03 Feb, 2026 | Sumedh S Thakar | Common Stock | D | 10,168 | $127.52 | 261,987 | D | F |