IDEXX Laboratories, Inc. (IDXX)
Nasdaq: IDXX · In Vitro & In Vivo Diagnostic Substances · Westbrook, ME · filing with the SEC since 1996
Grade7.5
◀ Past 8.8● Present 7.8▶ Future 5.7
Who owns IDEXX Laboratories, Inc.
As filed with the SECHolders of 5% or more
2
Blackrock, Inc. holds 9.4% of Common Stock, as its SCHEDULE 13G/A filed Apr 17, 2025 says.
Directors and officers
20
report now, of 32 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 2 named at left.
Holders of 5% or moreshare of the class, as filed
Blackrock, Inc.
SCHEDULE 13G/A · filed Apr 17, 2025 · Common Stock
Vanguard Capital Management
SCHEDULE 13G · filed Apr 30, 2026 · Common Stock
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%
What IDXX reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Privately-Owned Software and Data Platform Business
A company bought · acquisition · owns, named in the 10-K filed Feb 20, 2026
59 subsidiaries in 33 countries, from the list filed with the 10-K filed Feb 20, 2026.
Insider tradesForm 4
53sales
0purchases
0sales on a scheduled plan
9people selling
$58.4Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 12, 2025 to Nov 12, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 12, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window9 of 32 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Mazelsky Jay | Executive Chair of the Board | 26 | $33.0M | 0 | 0 | $0 |
| Fennell George | Executive Vice President | 8 | $7.3M | 0 | 0 | $0 |
| Underberg Sharon E. | EVP, GC & Corporate Secretary | 3 | $6.1M | 0 | 0 | $0 |
| Erickson Michael G | Executive Vice President | 6 | $3.4M | 0 | 0 | $0 |
| Hunt Nimrata | Executive Vice President | 2 | $2.9M | 0 | 0 | $0 |
| Lane Michael | Executive Vice President | 3 | $2.7M | 0 | 0 | $0 |
| Kingsley Lawrence D | director | 1 | $1.2M | 0 | 0 | $0 |
| Vandebroek Sophie V. | director | 2 | $900,000 | 0 | 0 | $0 |
| Junius Daniel M | director | 2 | $800,000 | 0 | 0 | $0 |