Through the 90-day period concluding February 19, 2026, Idexx Laboratories's top three insider stakeholders include Director Jonathan W Ayers (158.26K shares), President And Ceo Jonathan Jay Mazelsky (83.61K shares), Evp And Cfo And Treasurer Brian P Mckeon (31.55K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Jonathan W Ayers | 158,256 | 09 Sep, 2024 | |
| Jonathan Jay Mazelsky | President And Ceo | 83,606 | 17 Feb, 2026 |
| Brian P Mckeon | Evp And Cfo And Treasurer | 31,550 | 18 Feb, 2025 |
| Nimrata Hunt | Executive Vice President | 22,592 | 17 Feb, 2026 |
| Giovani Twigge | Senior Vice President | 20,329 | 25 Feb, 2022 |
| Michael G Erickson | Executive Vice President | 12,693 | 17 Feb, 2026 |
| James F Polewaczyk | Executive Vice President | 10,711 | 07 Mar, 2024 |
| George Fennell | Executive Vice President | 10,078 | 17 Feb, 2026 |
| Sophie V. Vandebroek | 9,340 | 13 May, 2025 | |
| Lawrence D Kingsley | 9,229 | 08 May, 2025 | |
| Michael Lane | Executive Vice President | 8,024 | 17 Feb, 2026 |
| Kathy V Turner | Senior Vice President | 7,380 | 17 Feb, 2023 |
| Sharon E. Underberg | Evp And Gc & Corporate Secretary | 6,941 | 17 Feb, 2026 |
| Andrew Emerson | Evp And Cfo And Treasurer | 4,222 | 17 Feb, 2026 |
| Daniel M Junius | 3,304 | 14 May, 2025 | |
| Michael Schreck | Executive Vice President | 3,089 | 17 Feb, 2026 |
| Michael Perkins Johnson | Executive Vice President | 2,795 | 17 Feb, 2026 |
| Stuart Essig | 2,236 | 08 May, 2025 | |
| Martin Alexander Smith | Executive Vice President | 2,157 | 17 Feb, 2026 |
| Bruce L. Claflin | 1,721 | 20 May, 2024 | |
| Asha Collins | 779 | 08 May, 2024 | |
| M Anne Szostak | 521 | 26 Aug, 2025 | |
| Irene Chang Britt | 208 | 08 May, 2024 | |
| Joseph L Hooley | 75 | 03 Feb, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 14 Feb, 2026 | George Fennell | Common Stock | A | 56 | $0.00 | 9,934 | D | M |
| 14 Feb, 2026 | George Fennell | Common Stock | D | 199 | $629.35 | 10,078 | D | F |
| 14 Feb, 2026 | George Fennell | Common Stock | A | 55 | $0.00 | 9,878 | D | M |
| 14 Feb, 2026 | George Fennell | Common Stock | A | 204 | $0.00 | 10,277 | D | M |
| 14 Feb, 2026 | George Fennell | Common Stock | A | 139 | $0.00 | 10,073 | D | M |
| 14 Feb, 2026 | Jonathan Jay Mazelsky | Common Stock | A | 1,099 | $0.00 | 84,521 | D | M |
| 14 Feb, 2026 | Jonathan Jay Mazelsky | Common Stock | A | 958 | $0.00 | 83,422 | D | M |
| 14 Feb, 2026 | Jonathan Jay Mazelsky | Common Stock | D | 915 | $629.35 | 83,606 | D | F |
| 14 Feb, 2026 | Martin Alexander Smith | Common Stock | A | 148 | $0.00 | 1,603 | D | M |
| 14 Feb, 2026 | Martin Alexander Smith | Common Stock | A | 188 | $0.00 | 1,791 | D | M |
| 14 Feb, 2026 | Martin Alexander Smith | Common Stock | A | 301 | $0.00 | 2,092 | D | M |
| 14 Feb, 2026 | Martin Alexander Smith | Common Stock | A | 367 | $0.00 | 2,459 | D | M |
| 14 Feb, 2026 | Martin Alexander Smith | Common Stock | D | 302 | $629.35 | 2,157 | D | F |
| 14 Feb, 2026 | Sharon E. Underberg | Common Stock | A | 218 | $0.00 | 6,927 | D | M |
| 14 Feb, 2026 | Sharon E. Underberg | Common Stock | A | 265 | $0.00 | 7,192 | D | M |
| 14 Feb, 2026 | Sharon E. Underberg | Common Stock | A | 176 | $0.00 | 6,709 | D | M |
| 14 Feb, 2026 | Sharon E. Underberg | Common Stock | A | 173 | $0.00 | 6,533 | D | M |
| 14 Feb, 2026 | Sharon E. Underberg | Common Stock | D | 251 | $629.35 | 6,941 | D | F |
| 14 Feb, 2026 | Michael Lane | Common Stock | A | 204 | $0.00 | 7,357 | D | M |
| 14 Feb, 2026 | Michael Lane | Common Stock | A | 220 | $0.00 | 7,577 | D | M |