🕵️ Idexx Laboratories Inc /DE ($IDXX)
SEC insider & ownership activity, last 12 months · CIK 874716 · every row links its SEC filing
Over the last 12 months insiders sold $70.8M with no open-market buying against it. Mazelsky Jonathan Jay sold $33.8M (Aug–Feb). 1 planned sale is pending, the largest $744K (Margaret Anne Szostak). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 8 sellers, $70.8M (56 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Mazelsky Jonathan Jay | 0 | – | 23 | $33.8M | Feb 26, 2026 |
| Nimrata K Hunt | 0 | – | 10 | $14.8M | Mar 3, 2026 |
| Fennell George | 0 | – | 8 | $7.3M | Feb 10, 2026 |
| Michael J Lane | 0 | – | 3 | $5.3M | Aug 6, 2025 |
| Michael G Erickson | 0 | – | 8 | $3.6M | Feb 17, 2026 |
| Sharon E Underberg | 0 | – | 1 | $3.6M | Aug 8, 2025 |
| Margaret Anne Szostak | 0 | – | 1 | $1.4M | Aug 22, 2025 |
| Sophie V Vandebroek | 0 | – | 2 | $920K | Feb 17, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Blackrock, Inc. | 9.4% | 13G | Apr 17, 2025 | filing ↗ | |
| Vanguard Capital Management | 7.5% | 13G | Apr 30, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Margaret Anne Szostak | $744K | May 20, 2026 | filing ↗ |
| Nimrata K Hunt | $1.1M | Mar 3, 2026 | filing ↗ |
| Jonathan J Mazelsky | $15.3M | Feb 26, 2026 | filing ↗ |
| Nimrata K Hunt | $1.8M | Feb 25, 2026 | filing ↗ |
| Sophie V Vandebroek | $920K | Feb 17, 2026 | filing ↗ |
| Michael G Erickson | $3.4M | Feb 17, 2026 | filing ↗ |
| George Fennell | $7.3M | Feb 10, 2026 | filing ↗ |
| Nimrata K Hunt | $6.6M | Nov 7, 2025 | filing ↗ |
| Margaret Anne Szostak | $1.4M | Aug 22, 2025 | filing ↗ |
| Michael G Erickson | $265K | Aug 12, 2025 | filing ↗ |
| Nimrata K Hunt | $788K | Aug 11, 2025 | filing ↗ |
| Sharon E Underberg | $3.6M | Aug 8, 2025 | filing ↗ |
| Nimrata K Hunt | $4.5M | Aug 6, 2025 | filing ↗ |
| Jonathan J Mazelsky | $18.5M | Aug 6, 2025 | filing ↗ |
| Michael J Lane | $5.3M | Aug 6, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Charter/bylaw changes (5.03) | May 12, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 12, 2026 | filing ↗ |
| Earnings (2.02) | May 5, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 5, 2026 | filing ↗ |
| Officer/director changes (5.02) | Mar 24, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 24, 2026 | filing ↗ |
| Officer/director changes (5.02) | Feb 13, 2026 | filing ↗ |
| Earnings (2.02) | Feb 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 2, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jan 11, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Jan 11, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 11, 2026 | filing ↗ |
| Material agreement (1.01) | Nov 12, 2025 | filing ↗ |
| New financial obligation (2.03) | Nov 12, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 12, 2025 | filing ↗ |
| Earnings (2.02) | Nov 3, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 3, 2025 | filing ↗ |
| Officer/director changes (5.02) | Oct 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 6, 2025 | filing ↗ |
| Earnings (2.02) | Aug 4, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 4, 2025 | filing ↗ |