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Arphra AIPlain-English read on IDEXX Laboratories, Inc.’s valuationInsider signal · 90d
Balanced
Bought
$0
Sold
$0
Txns
0
Over the trailing 90 days insiders are balanced — $0 bought against $0 sold across 0 open-market Form-4 transactions. Much insider selling is scheduled (10b5-1); read the asymmetry, not any single print.
Open-market Form 4
· insider_tradesInsider transactions · last 365d
Net −$70.8M0 buys
| Insider | Role | Type | Shares | Value | Date |
|---|---|---|---|---|---|
| Hunt Nimrata | officer: Executive Vice President | Sell | −1,758 | $1.1M | Mar 03, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | −2,860 | $1.9M | Feb 26, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | −3,660 | $2.4M | Feb 26, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | −2,859 | $1.9M | Feb 26, 2026 |
| Hunt Nimrata | officer: Executive Vice President | Sell | −2,693 | $1.8M | Feb 26, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | −1,000 | $662.2K | Feb 26, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | −1,095 | $713.4K | Feb 26, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | −1,111 | $727.3K | Feb 26, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | −1,171 | $765.5K | Feb 26, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | −1,200 | $793.3K | Feb 26, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | −1,281 | $833.5K | Feb 26, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | −1,343 | $882.1K | Feb 26, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | −1,488 | $975.9K | Feb 26, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | −1,669 | $1.1M | Feb 26, 2026 |
Transaction mix · 365d
100%
Sells56 · $70.8M
Buys0 · $0
Top sellers · 365d
MAZELSKY JONATHAN JAY · director, officer: President and CEO−$33.8M
Hunt Nimrata · officer: Executive Vice President−$14.8M
FENNELL GEORGE · officer: Executive Vice President−$7.3M
Transactions
56
0 buys · 56 sells
Bought
$0
Open market
Sold
$70.78M
Open market
Net flow
−$70.78M
Buys − sells
Transactions
| Insider | Role | Action | Shares | Price | Value | Trade date | Filing |
|---|---|---|---|---|---|---|---|
| Hunt Nimrata | officer: Executive Vice President | Sell | 1,758 | $634.57 | $1.12M | Mar 03, 2026 | Mar 05, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 2,860 | $657.84 | $1.88M | Feb 26, 2026 | Mar 02, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 3,660 | $658.92 | $2.41M | Feb 26, 2026 | Mar 02, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 2,859 | $659.75 | $1.89M | Feb 26, 2026 | Mar 02, 2026 |
| Hunt Nimrata | officer: Executive Vice President | Sell | 2,693 | $661.54 | $1.78M | Feb 26, 2026 | Feb 27, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 1,000 | $662.16 | $662.16K | Feb 26, 2026 | Mar 02, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 1,095 | $651.49 | $713.38K | Feb 26, 2026 | Mar 02, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 1,111 | $654.63 | $727.29K | Feb 26, 2026 | Mar 02, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 1,171 | $653.68 | $765.45K | Feb 26, 2026 | Mar 02, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 1,200 | $661.10 | $793.32K | Feb 26, 2026 | Mar 02, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 1,281 | $650.67 | $833.51K | Feb 26, 2026 | Mar 02, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 1,343 | $656.85 | $882.14K | Feb 26, 2026 | Mar 02, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 1,488 | $655.85 | $975.9K | Feb 26, 2026 | Mar 02, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 1,669 | $652.49 | $1.09M | Feb 26, 2026 | Mar 02, 2026 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 2,589 | $663.04 | $1.72M | Feb 26, 2026 | Mar 02, 2026 |
| Erickson Michael G | officer: Executive Vice President | Sell | 204 | $625.24 | $127.55K | Feb 17, 2026 | Feb 19, 2026 |
| Erickson Michael G | officer: Executive Vice President | Sell | 40 | $629.86 | $25.19K | Feb 17, 2026 | Feb 19, 2026 |
| Vandebroek Sophie V. | director | Sell | 945 | $628.65 | $594.07K | Feb 17, 2026 | Feb 19, 2026 |
| Vandebroek Sophie V. | director | Sell | 519 | $628.56 | $326.22K | Feb 17, 2026 | Feb 19, 2026 |
| Erickson Michael G | officer: Executive Vice President | Sell | 2,694 | $628.22 | $1.69M | Feb 17, 2026 | Feb 19, 2026 |
| Erickson Michael G | officer: Executive Vice President | Sell | 1,288 | $626.26 | $806.62K | Feb 17, 2026 | Feb 19, 2026 |
| Erickson Michael G | officer: Executive Vice President | Sell | 689 | $629.09 | $433.44K | Feb 17, 2026 | Feb 19, 2026 |
| Erickson Michael G | officer: Executive Vice President | Sell | 456 | $623.76 | $284.43K | Feb 17, 2026 | Feb 19, 2026 |
| FENNELL GEORGE | officer: Executive Vice President | Sell | 1,130 | $643.00 | $726.59K | Feb 10, 2026 | Feb 11, 2026 |
| FENNELL GEORGE | officer: Executive Vice President | Sell | 2,161 | $645.25 | $1.39M | Feb 10, 2026 | Feb 11, 2026 |
| FENNELL GEORGE | officer: Executive Vice President | Sell | 40 | $650.32 | $26.01K | Feb 10, 2026 | Feb 11, 2026 |
| FENNELL GEORGE | officer: Executive Vice President | Sell | 2,782 | $646.23 | $1.8M | Feb 10, 2026 | Feb 11, 2026 |
| FENNELL GEORGE | officer: Executive Vice President | Sell | 2,809 | $649.26 | $1.82M | Feb 10, 2026 | Feb 11, 2026 |
| FENNELL GEORGE | officer: Executive Vice President | Sell | 397 | $644.02 | $255.67K | Feb 10, 2026 | Feb 11, 2026 |
| FENNELL GEORGE | officer: Executive Vice President | Sell | 966 | $648.78 | $626.72K | Feb 10, 2026 | Feb 11, 2026 |
| FENNELL GEORGE | officer: Executive Vice President | Sell | 1,060 | $647.21 | $686.04K | Feb 10, 2026 | Feb 11, 2026 |
| Hunt Nimrata | officer: Executive Vice President | Sell | 1,465 | $703.73 | $1.03M | Nov 07, 2025 | Nov 10, 2025 |
| Hunt Nimrata | officer: Executive Vice President | Sell | 5,114 | $702.20 | $3.59M | Nov 07, 2025 | Nov 10, 2025 |
| Hunt Nimrata | officer: Executive Vice President | Sell | 1,468 | $704.87 | $1.03M | Nov 07, 2025 | Nov 10, 2025 |
| Hunt Nimrata | officer: Executive Vice President | Sell | 1,378 | $705.54 | $972.24K | Nov 07, 2025 | Nov 10, 2025 |
| SZOSTAK M ANNE | director | Sell | 2,187 | $647.33 | $1.42M | Aug 22, 2025 | Aug 26, 2025 |
| Erickson Michael G | officer: Executive Vice President | Sell | 88 | $649.85 | $57.12K | Aug 12, 2025 | Aug 14, 2025 |
| Erickson Michael G | officer: Executive Vice President | Sell | 318 | $649.99 | $206.7K | Aug 12, 2025 | Aug 14, 2025 |
| Hunt Nimrata | officer: Executive Vice President | Sell | 1,200 | $656.53 | $787.84K | Aug 11, 2025 | Aug 13, 2025 |
| Underberg Sharon E. | officer: EVP, GC & Corporate Secretary | Sell | 5,450 | $651.60 | $3.55M | Aug 08, 2025 | Aug 12, 2025 |
| Hunt Nimrata | officer: Executive Vice President | Sell | 3,018 | $629.87 | $1.9M | Aug 06, 2025 | Aug 08, 2025 |
| Lane Michael | officer: Executive Vice President | Sell | 300 | $628.89 | $188.67K | Aug 06, 2025 | Aug 08, 2025 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 7,299 | $631.61 | $4.61M | Aug 06, 2025 | Aug 08, 2025 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 6,056 | $630.59 | $3.82M | Aug 06, 2025 | Aug 08, 2025 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 3,526 | $635.13 | $2.24M | Aug 06, 2025 | Aug 08, 2025 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 3,397 | $629.82 | $2.14M | Aug 06, 2025 | Aug 08, 2025 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 3,000 | $632.56 | $1.9M | Aug 06, 2025 | Aug 08, 2025 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 1,822 | $636.15 | $1.16M | Aug 06, 2025 | Aug 08, 2025 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 1,525 | $628.27 | $958.11K | Aug 06, 2025 | Aug 08, 2025 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 1,095 | $626.90 | $686.46K | Aug 06, 2025 | Aug 08, 2025 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 880 | $636.81 | $560.39K | Aug 06, 2025 | Aug 08, 2025 |
| Lane Michael | officer: Executive Vice President | Sell | 2,480 | $627.99 | $1.56M | Aug 06, 2025 | Aug 08, 2025 |
| MAZELSKY JONATHAN JAY | director, officer: President and CEO | Sell | 660 | $639.37 | $421.99K | Aug 06, 2025 | Aug 08, 2025 |
| Lane Michael | officer: Executive Vice President | Sell | 5,631 | $627.56 | $3.53M | Aug 06, 2025 | Aug 08, 2025 |
| Hunt Nimrata | officer: Executive Vice President | Sell | 1,218 | $630.69 | $768.18K | Aug 06, 2025 | Aug 08, 2025 |
| Hunt Nimrata | officer: Executive Vice President | Sell | 2,907 | $630.91 | $1.83M | Aug 06, 2025 | Aug 08, 2025 |
By insider
- MAZELSKY JONATHAN JAY−$33.83Mdirector, officer: President and CEO0B · 23S
- Hunt Nimrata−$14.82Mofficer: Executive Vice President0B · 10S
- FENNELL GEORGE−$7.34Mofficer: Executive Vice President0B · 8S
- Lane Michael−$5.28Mofficer: Executive Vice President0B · 3S
- Erickson Michael G−$3.63Mofficer: Executive Vice President0B · 8S
- Underberg Sharon E.−$3.55Mofficer: EVP, GC & Corporate Secretary0B · 1S
- SZOSTAK M ANNE−$1.42Mdirector0B · 1S
- Vandebroek Sophie V.−$920.29Kdirector0B · 2S
Beneficial ownership filings
Schedule 13D / 13G — investors holding more than 5% of IDXX-US.
DB · acquisition_ownership3
Top 10 holders · 8 quarters
13F position evolutionNo 13F history in
institutional_holders for IDXX-US.