CHARLES RIVER LABORATORIES INTERNATIONAL, INC. — Director's Dealing 2013

May 10, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: CHARLES RIVER LABORATORIES INTERNATIONAL INC (CRL)
CIK: 0001100682
Period of Report: 2013-05-08

Reporting Person: CHUBB STEPHEN D (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-05-08	Common Stock	A	3240	—	Acquired	34843	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2013-05-08	Stock Options (Right to Buy)	$43.39	A	4030	Acquired	2020-05-08	Common Stock (4030)	Direct

Footnotes

F1: Reflects Restricted Shares of Common Stock that vest upon the earlier of 5/8/14 or the business day prior to the next annual meeting of shareholders.

F2: The Stock Options become exercisable upon the earlier of 5/8/14 or the business day prior to the Company's next annual meeting of shareholders