Craig B. Thompson - 21 May 2025 Form 4 Insider Report for CHARLES RIVER LABORATORIES INTERNATIONAL, INC. (CRL)

Role: Director
Signature: /s/ Craig B. Thompson, M.D.
Issuer symbol: CRL
Transactions as of: 21 May 2025
Net transactions value: +$407,910
Form type: 4
Filing time: 23 May 2025, 16:27:57 UTC
Previous filing: 06 Jan 2025
Next filing: 06 Jan 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Thompson Craig B.	Director	C/O CHARLES RIVER LABORATORIES, 251 BALLARDVALE STREET, WILMINGTON	/s/ Craig B. Thompson, M.D.	23 May 2025	0001423419

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CRL	Common Stock	Award	$127,691	+946	+64%	$134.98	2,413	21 May 2025	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	CRL	Stock Options (Right to Buy)	Award	$280,218	+2,076		$134.98	2,076	21 May 2025	Common Stock	2,076	$134.98	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The unvested restricted stock units vest upon the earlier of 5/21/2026 or the business day prior to the Company's next annual meeting of shareholders.
F2	The stock options become exercisable upon the earlier of 5/21/2026 or the business day prior to the Company's next annual meeting of shareholders.