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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1100682	Charles River Laboratories International Inc	CRL	Services-Commercial Physical & Biological Research (8731)	061397316

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1199982	Nancy Gillett	251 Ballardvale Street Wilmington MA 01887	Corporate Executive Vp	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2011-02-25	7,800	$0.00	68,878	No	4	A	Direct
Common Stock	Disposition	2011-02-26	639	$37.03	68,239	No	4	F	Direct
Common Stock	Disposition	2011-02-27	894	$37.03	67,345	No	4	F	Direct
Common Stock	Disposition	2011-02-27	298	$37.03	67,047	No	4	F	Direct
Common Stock	Disposition	2011-02-28	774	$37.03	66,273	No	4	F	Direct
Common Stock	Acquisiton	2011-02-28	29,625	$24.80	95,898	No	4	M	Direct
Common Stock	Disposition	2011-02-28	400	$36.64	95,498	No	4	S	Direct
Common Stock	Disposition	2011-02-28	800	$36.65	94,698	No	4	S	Direct
Common Stock	Disposition	2011-02-28	100	$36.66	94,598	No	4	S	Direct
Common Stock	Disposition	2011-02-28	400	$36.68	94,198	No	4	S	Direct
Common Stock	Disposition	2011-02-28	600	$36.69	93,598	No	4	S	Direct
Common Stock	Disposition	2011-02-28	300	$36.70	93,298	No	4	S	Direct
Common Stock	Disposition	2011-02-28	500	$36.73	92,798	No	4	S	Direct
Common Stock	Disposition	2011-02-28	725	$36.74	92,073	No	4	S	Direct
Common Stock	Disposition	2011-02-28	100	$36.76	91,973	No	4	S	Direct
Common Stock	Disposition	2011-02-28	1,600	$36.78	90,373	No	4	S	Direct
Common Stock	Disposition	2011-02-28	3,600	$36.79	86,773	No	4	S	Direct
Common Stock	Disposition	2011-02-28	13,797	$36.80	72,976	No	4	S	Direct
Common Stock	Disposition	2011-02-28	3,800	$36.81	69,176	No	4	S	Direct
Common Stock	Disposition	2011-02-28	2,200	$36.82	66,976	No	4	S	Direct
Common Stock	Disposition	2011-02-28	400	$36.83	66,576	No	4	S	Direct
Common Stock	Disposition	2011-02-28	303	$36.84	66,273	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	A	Direct
No	4	F	Direct
No	4	F	Direct
No	4	F	Direct
No	4	F	Direct
No	4	M	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Options (Right to Buy)	Acquisiton	2011-02-25	25,750	$0.00	25,750	$37.03
Common Stock	Stock Options (Right to Buy)	Disposition	2011-02-28	29,625	$0.00	29,625	$24.80

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
25,750	2012-02-25	2018-02-25	No	4	A	Direct
29,625	2010-02-27	2016-02-27	No	4	M	Direct

Footnotes

Options vest equally over four years beginning one year from date of grant.
Restricted Common Shares vest equally over four years beginning one year from the date of issuance.