Company · Ownership research

IDEXX LABORATORIES INC /DE IDXX

CIK 0000874716

Form 4 transactions dated Nov 1, 2023 to Nov 11, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 155 rows; the complete set is available through the API.

Insider filings on file run through Nov 5, 2026.

Insider purchases & sales

Purchased: $0.00
Sold: $148.94M

Nov 1, 2023 – Nov 5, 2026
Available records · partial months are marked ·

202610 of 11 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
Nov 4, 2026	Underberg Sharon E. EVP, GC & Corporate Secretary	Sale	$6.13M 8,906 shares sold	55.40% sold Direct holding	▾
Nov 4, 2026	MAZELSKY JONATHAN JAY Executive Chair of the Board · Director	Sale	$17.68M 25,140 shares sold	23.08% sold Direct holding	▾
Nov 4, 2026	Lane Michael Executive Vice President	Sale	$2.74M 3,979 shares sold	49.40% sold Direct holding	▾
Nov 4, 2026	JUNIUS DANIEL M Director	Sale	$844.89K 1,200 shares sold	33.70% sold Direct holding	▾
Sep 4, 2026	Kingsley Lawrence D Director	Sale	$1.17M 2,203 shares sold	18.72% sold Direct holding	▾
Mar 3, 2026	Hunt Nimrata Executive Vice President	Sale	$1.12M 1,758 shares sold	8.83% sold Direct holding	▾
Feb 26, 2026	MAZELSKY JONATHAN JAY President and CEO · Director	Sale	$15.34M 23,326 shares sold	21.81% sold Direct holding	▾
Feb 26, 2026	Hunt Nimrata Executive Vice President	Sale	$1.78M 2,693 shares sold	11.92% sold Direct holding	▾
Feb 17, 2026	Erickson Michael G Executive Vice President	Sale	$3.37M 5,371 shares sold	29.73% sold Direct holding	▾
Feb 17, 2026	Vandebroek Sophie V. Director	Sale	$920.29K 1,464 shares sold	69.32% sold Direct holding	▾

Showing 11 / 11 record groups in 2026. The complete set is available through the API.

IDEXX LABORATORIES INC /DE · IDXX

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The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. For the year shown, this page lists 11 of 11 purchase / sale groups and 30 of 155 other groups; the totals and the monthly series cover the whole window.

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{"action":"list","ticker":"IDXX","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.

Non-cancelled, non-derivative purchase (P) and sale (S) rows dated inside the public window, as reported. Share totals are on today's split-adjusted basis. Includes open-market and private transactions. Data after the latest filing is not asserted complete and is not zero-filled. A grouped event shares filing, transaction date, security, code, direction, ownership bucket and source. Derivative groups also match underlying security, exercise price, exercise/expiration dates and footnote references. Reported rows are retained; P/S price lots can be grouped. Post-transaction balances are never summed.