Company · Ownership research

CHARLES RIVER LABORATORIES INTERNATIONAL, INC. CRL

CIK 0001100682

Form 4 transactions dated Sep 1, 2023 to Sep 26, 2026, as reported to the SEC.

Insider trading Initial holdings Institutional holders

This page lists 30 of 69 rows; the complete set is available through the API.

Insider filings on file run through 2026-08-27.

Insider purchases & sales

Purchased: $2.50M
Sold: $61.29M

Sep 1, 2023 – Aug 27, 2026
Available records · partial months are marked ·

20259 of 9 preview events

Date	Insider	Activity	Trade value (USD)	% of prior holding
2025-08-22	LaPlume Joseph W EVP, Corp Strategy & Develop	Sale	$65.49K 400 shares sold	1.66% sold Direct holding	▾
2025-08-18	LaPlume Joseph W EVP, Corp Strategy & Develop	Sale	$126.08K 800 shares sold	3.21% sold Direct holding	▾
2025-08-07	LaPlume Joseph W EVP, Corp Strategy & Develop	Sale	$60.02K 400 shares sold	1.58% sold Direct holding	▾
2025-05-15	MASSARO GEORGE Director	Sale10b5-1 footnote	$19.26K 140 shares sold	2.45% sold Direct holding	▾
2025-05-14	MASSARO GEORGE Director	Sale10b5-1 footnote	$19.70K 140 shares sold	2.39% sold Direct holding	▾
2025-05-13	LaPlume Joseph W EVP, Corp Strategy & Develop	Sale	$72.70K 500 shares sold	2.50% sold Direct holding	▾
2025-02-20	FOSTER JAMES C Chairman, President and CEO · Director	Purchase	$1.00M 6,075 shares bought	3.42% added Direct holding	▾
2025-02-20	Girshick Birgit Corporate Executive VP & COO	Purchase	$249.25K 1,514 shares bought	2.83% added Direct holding	▾
2025-02-20	LaPlume Joseph W EVP, Corp Strategy & Develop	Sale	$715.00K 4,400 shares sold	18.02% sold Direct holding	▾

Showing 9 / 9 record groups in 2025. The complete set is available through the API.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC. · CRL

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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 9 of 9 purchase / sale groups and 30 of 69 other groups; the totals and the monthly series cover the whole window.

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{"ticker":"CRL","transaction_code":["P","S"],"transaction_form_type":"4","page_size":20}

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Sources, coverage & how to read this data

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. 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.