LYTIR

Company · IDXX

IDEXX Laboratories, Inc.

Name as listed on its exchange; filed with the SEC as IDEXX LABORATORIES INC /DE.

Nasdaq's symbol directory lists IDXX on Nasdaq as “IDEXX Laboratories, Inc. - Common Stock”.

In the 12 months to Nov 8, 2026: insiders sold on 5 occasions ($28.6M); 5 planned-sale notices; 1 filing by holders of 5% or more; 2 congressional trade disclosures; 2 company reports (Form 8-K, since May 26, 2026).

All insider filings at the SEC

Insider purchases and sales, by month (last 12 months)Insider purchases: $0 in total; Insider sales: $28.6M in total.Sep: Insider sales $1.2MNov: Insider sales $27.4MDecJanFebMarAprMayJunJulAugSepOctNov
Insider purchases above the line: $0Insider sales below: $28.6M
Dollar value of open-market purchases and sales reported on SEC Form 4, by the month traded. Sales include pre-arranged 10b5-1 plan sales.

Insider trades · SEC Form 4

Those inside the hall

Open-market purchases and sales only. Legs one person filed for one day are combined.

Who traded

  1. Jonathan Jay Mazelsky, Executive Chair of the Board sold on 1 day latest Nov 4, 2026 sold $17.7M
  2. Sharon E. Underberg, EVP, GC & Corporate Secretary sold on 1 day latest Nov 4, 2026 sold $6.1M
  3. Michael Lane, Executive Vice President sold on 1 day latest Nov 4, 2026 sold $2.7M
  4. Lawrence D. Kingsley sold on 1 day latest Sep 4, 2026 sold $1.2M
  5. JUNIUS DANIEL M sold on 1 day latest Nov 4, 2026 sold $845K
Every trade (5)
  1. SELLJonathan Jay Mazelsky, Executive Chair of the Board sold Nov 4, 2026 25,140 shares 13 legs combined filing $17.7M
  2. SELLSharon E. Underberg, EVP, GC & Corporate Secretary sold Nov 4, 2026 8,906 shares 3 legs combined filing $6.1M
  3. SELLMichael Lane, Executive Vice President sold Nov 4, 2026 3,978 shares 3 legs combined filing $2.7M
  4. SELLJUNIUS DANIEL M sold Nov 4, 2026 1,200 shares 2 legs combined filing $845K
  5. SELLLawrence D. Kingsley sold Sep 4, 2026 2,203 shares filing $1.2M

Planned sales · SEC Form 144

Notice given

A Form 144 is filed before an insider sells restricted stock. It states an intent; the sale, if it happens, appears later on a Form 4. Every recent notice

  1. JONATHAN J MAZELSKY filed Nov 4, 2026 Officer 25,140 shares planned sale date 11/04/2026 filing $17.7M
  2. SHARON E UNDERBERG filed Nov 4, 2026 Officer 8,906 shares planned sale date 11/04/2026 filing $6.1M
  3. MICHAEL J LANE filed Nov 4, 2026 Officer 3,979 shares planned sale date 11/04/2026 filing $2.7M
  4. JUNIUS DANIEL M filed Nov 4, 2026 Director 500 shares planned sale date 11/04/2026 filing $346K
  5. LAWRENCE D KINGSLEY filed Sep 4, 2026 Director 2,203 shares planned sale date 09/04/2026 filing $1.2M

Large holders · SEC Schedules 13D and 13G

Five percent and over

Anyone who comes to hold more than 5% of a company's voting shares must tell the SEC. A Schedule 13D is filed by a holder who may seek to influence the company; a 13G by one who states it is a passive investor. An amendment updates an earlier filing, and a stake reported as 0% means the holder says it has sold all, or nearly all, of its shares. Every recent 13D and 13G

  1. Vanguard Portfolio Management filed Oct 30, 2026 Schedule 13G passive 3,974,472 shares filing 5.04%

Congress · STOCK Act

The Althing

Periodic transaction reports. Amounts are the ranges members report; the trade date is when it happened, the report can come up to 45 days later.

  1. April McClain Delaney (D-MD06): Sale Jan 13, 2026 reported Feb 2, 2026 one of 15 trades the member reported that day House Stocks (including ADRs) owner: dependent $1,001 - $15,000
  2. April McClain Delaney (D-MD06): Sale Dec 2, 2025 reported Jan 5, 2026 one of 16 trades the member reported that day House Stocks (including ADRs) owner: dependent $1,001 - $15,000

Company reports · SEC Form 8-K

In its own words

Current reports the company filed with the SEC; most items are due within four business days of the event. Each line lists the report's items by the SEC's own titles; the filing says what happened. Reports collected since May 26, 2026; every 8-K at the SEC.

  1. Results of operations and financial condition filing Nov 2, 2026
  2. Results of operations and financial condition filing Aug 4, 2026

Sources: SEC EDGAR (Forms 4, 144 and 8-K) and STOCK Act periodic transaction reports. Filings can be late, amended or wrong at the source; see methodology.