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PROSPECTUS SUPPLEMENT
    To Prospectus dated June 5, 2001

Filed Pursuant to Rule 424 (b) (3) of the Rules and Regulations
Under the Securities Act of 1933

Registration Statement No. 333-92383

Charles River Laboratories International, Inc.
[Name of Issuer]

         Charles River Laboratories International, Inc.
Common Stock
Warrants To Purchase Common Stock
[Title of Security]

RECENT DEVELOPMENTS

We have attached to the prospectus supplement, and incorporated by reference into it, the Form 10-Q Quarterly Report of Charles River Laboratories International, Inc. for the Quarter Ending September, 2002 filed with the Securities and Exchange Commission on October 31, 2002.

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November 1, 2002

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UNITED STATES
SECURITES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

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FORM 10-Q

ý	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 28, 2002
OR
o	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Commission file number 333-92383

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CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
(Exact Name of Registrant as specified in its Charter)

DELAWARE (State of Incorporation)

06-1397316 (I.R.S. Employer Identification No.)

251 BALLARDVALE STREET, WILMINGTON, MASSACHUSETTS 01887
(Address of Principal Executive Offices) (Zip Code)

978-658-6000
(Registrant's Telephone Number, Including Area Code)

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        Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ý    No o

        As of October 18, 2002 there were 45,132,882 shares of the registrant's common stock outstanding

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CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

FORM 10-Q

For the Quarterly Period Ended September 28, 2002

Table of Contents

						Page
Part I. Financial Information
		Item 1.		Financial Statements
				Condensed Consolidated Statements of Income (Unaudited) for the three months ended September 28, 2002 and September 29, 2001		3
				Condensed Consolidated Statements of Income (Unaudited) for the nine months ended September 28, 2002 and September 29, 2001		4
				Condensed Consolidated Balance Sheets as of September 28, 2002 (Unaudited) and December 29, 2001		5
				Condensed Consolidated Statements of Cash Flows (Unaudited) for the nine months ended September 28, 2002 and September 29, 2001		6
				Notes to Unaudited Condensed Consolidated Interim Financial Statements		7
		Item 2.		Management's Discussion and Analysis of Financial Condition and Results of Operations		19
		Item 3.		Quantitative and Qualitative Disclosures about Market Risk		24
		Item 4.		Controls and Procedures		25
Part II. Other Information
		Item 6.		Exhibits and Reports on Form 8-K		26

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CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

(dollars in thousands except for per share data)

			Three Months Ended
			September 28, 2002			September 29, 2001
Net sales related to products			$	74,158		$	64,094
Net sales related to services				67,206			59,591
Total net sales				141,364			123,685
Costs and expenses
	Cost of products sold			41,663			38,050
	Cost of services provided			46,226			42,424
	Selling, general and administrative			20,023			17,016
	Amortization of goodwill and intangibles			933			2,183
Operating income				32,519			24,012
Other income (expense)
	Interest income			427			360
	Interest expense			(2,289	)		(5,456	)
	Other income (expense)			(48	)		83
Income before income taxes, minority interests, earnings from equity investments and extraordinary item				30,609			18,999
Provision for income taxes				11,041			6,677
Income before minority interests, earnings from equity investments and extraordinary item				19,568			12,322
Minority interests				(717	)		(643	)
Earnings from equity investments				57			126
Income before extraordinary item				18,908			11,805
Extraordinary loss, net of tax benefit of $236 and $691, respectively				(377	)		(1,284	)
Net income			$	18,531		$	10,521
Earnings per common share before extraordinary item
	Basic		$	0.42		$	0.27
	Diluted		$	0.39		$	0.26
Earnings per common share after extraordinary item
	Basic		$	0.41		$	0.24
	Diluted		$	0.38		$	0.23

See Notes to Condensed Consolidated Financial Statements

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CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

(dollars in thousands except for per share data)

			Nine Months Ended
			September 28, 2002			September 29, 2001
Net sales related to products			$	217,186		$	186,816
Net sales related to services				194,499			152,720
Total net sales				411,685			339,536
Costs and expenses
	Cost of products sold			120,814			108,256
	Cost of services provided			135,037			107,637
	Selling, general and administrative			62,329			49,761
	Amortization of goodwill and intangibles			2,194			6,004
Operating income				91,311			67,878
Other income (expense)
	Interest income			1,637			959
	Interest expense			(9,152	)		(18,354	)
	Other income (expense)			1,029			516
Income before income taxes, minority interests, earnings from equity investments and extraordinary item				84,825			50,999
Provision for income taxes				32,185			19,891
Income before minority interests, earnings from equity investments and extraordinary item				52,640			31,108
Minority interests				(2,098	)		(1,859	)
Earnings from equity investments				316			345
Income before extraordinary item				50,858			29,594
Extraordinary loss, net of tax benefit of $11,651 and $1,671, respectively				(18,231	)		(3,104	)
Net income			$	32,627		$	26,490
Earnings per common share before extraordinary item
	Basic		$	1.14		$	0.74
	Diluted		$	1.06		$	0.68
Earnings per common share after extraordinary item
	Basic		$	0.73		$	0.66
	Diluted		$	0.70		$	0.61

See Notes to Condensed Consolidated Financial Statements

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CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

(dollars in thousands)

				September 28, 2002			December 29, 2001
				(Unaudited)
Assets
Current assets
	Cash and cash equivalents			$	112,389		$	58,271
	Restricted cash				5,000			—
	Trade receivables, less allowances of $2,345 and $2,119, respectively				98,718			98,478
	Inventories				41,921			39,056
	Prepaid expenses and other current assets				15,892			14,349
		Total current assets			273,920			210,154
Property, plant and equipment, net					174,548			155,919
Goodwill, net					78,650			52,087
Other intangibles, net					28,274			38,287
Investments in affiliates (Note 3)					—			3,002
Deferred tax asset					77,128			87,781
Other assets					23,788			24,132
		Total assets		$	656,308		$	571,362
Liabilities and Shareholders' Equity
Current liabilities
	Accounts payable			$	10,917		$	13,868
	Accrued compensation				28,185			25,736
	Deferred income				22,062			22,210
	Accrued liabilities				31,726			28,899
	Other current liabilities				8,009			7,819
		Total current liabilities			100,899			98,532
Long-term debt					188,512			155,506
Capital lease obligations					76			361
Accrued ESLIRP					11,946			11,383
Other long-term liabilities					5,100			3,082
	Total liabilities				306,533			268,864
Commitments and contingencies (Note 10)
Minority interests					16,935			12,988
Shareholders' equity
	Preferred stock, $0.01 par value; 20,000,000 shares authorized; no shares issued and outstanding				—			—
	Common stock, $0.01 par value; 120,000,000 shares authorized; 45,092,784 and 44,189,650 shares issued and outstanding at September 28, 2002 and December 29, 2001, respectively				451			442
	Capital in excess of par value				599,086			588,909
	Retained earnings				(250,541	)		(283,168	)
	Loans to officers				—			(341	)
	Unearned compensation				(2,629	)		(316	)
	Accumulated other comprehensive income				(13,527	)		(16,016	)
		Total shareholders' equity			332,840			289,510
		Total liabilities and shareholders' equity		$	656,308		$	571,362

See Notes to Condensed Consolidated Financial Statements

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CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

(dollars in thousands)

				Nine Months Ended
				September 28, 2002			September 29, 2001
Cash flows relating to operating activities
Net income				$	32,627		$	26,490
Adjustments to reconcile net income to net cash provided by operating activities:
	Depreciation and amortization				17,381			19,191
	Amortization of debt issuance costs and discounts				1,445			1,126
	Non-cash compensation				582			21
	Provision for doubtful accounts				158			—
	Extraordinary loss, net of tax				18,231			3,104
	Earnings from equity investments				(316	)		(345	)
	Minority interests				2,098			1,859
	Deferred income taxes				18,353			12,274
	Windfall tax benefit from exercises of employee stock options				3,005			1,204
	Loss on disposal of property, plant, and equipment				1,529			234
	Other non-cash items				—			217
Changes in assets and liabilities:
	Restricted cash				(5,000	)		—
	Trade receivables				3,383			(23,861	)
	Inventories				(112	)		(3,679	)
	Prepaids and other current assets				(1,085	)		(2,131	)
	Other assets				703			(1,660	)
	Accounts payable				(4,633	)		(4,407	)
	Accrued compensation				1,606			5,619
	Deferred income				196			4,818
	Accrued and other current liabilities				(2,859	)		(6,375	)
	Accrued ESLIRP				563			715
	Other long-term liabilities				1,136			(937	)
		Net cash provided by operating activities			88,991			33,477
Cash flows relating to investing activities
	Capital expenditures				(21,614	)		(20,530	)
	Contingent payments for prior year acquisitions				—			(250	)
	Acquisition of businesses, net of cash acquired				(22,046	)		(55,265	)
		Net cash used in investing activities			(43,660	)		(76,045	)
Cash flows relating to financing activities
	Proceeds from long term debt and revolving credit facility				188,922			45,254
	Payments on long-term debt and revolving credit facility				(155,144	)		(68,137	)
	Payments of deferred financing cost				(6,123	)		(984	)
	Payments on capital lease obligations				(71	)		(4,142	)
	Proceeds from issuance of common stock, net of transaction fees				—			116,691
	Proceeds from exercises of employee stock options				2,150			1,003
	Proceeds from exercises of warrants				2,136			—
	Premium paid on early retirement of debt				(23,886	)		(1,811	)
	Dividends paid to minority interests				(1,470	)		(729	)
	Payments received from officer loans				341			579
		Net cash provided by financing activities			6,855			87,724
Effect of exchange rate changes on cash and cash equivalent					1,932			18
Net change in cash and cash equivalents					54,118			45,174
Cash and cash equivalents, beginning of period					58,271			33,129
Cash and cash equivalents, end of period				$	112,389		$	78,303
Supplemental cash flow information
	Cash paid for interest			$	9,427		$	20,469
	Cash paid for taxes				11,632			3,418

See Notes to Condensed Consolidated Financial Statements

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CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS

(dollars in thousands)

1. Basis of Presentation

        The condensed consolidated interim financial statements are unaudited, and certain information and footnote disclosures related thereto normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been omitted in accordance with Rule 10-01 of Regulation S-X. In the opinion of management, the accompanying unaudited condensed consolidated financial statements were prepared following the same policies and procedures used in the preparation of the audited financial statements and reflect all adjustments (consisting of normal recurring adjustments) considered necessary to fairly state the financial position and results of operations of Charles River Laboratories International, Inc. ("the Company"). The results of operations for the interim periods are not necessarily indicative of the results for the entire fiscal year. These condensed consolidated financial statements should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 29, 2001.

        Certain amounts in the prior year financial statements and related notes have been reclassified to conform with current year presentation.

2. Long Term Debt

        On September 26, 2002, the Company terminated the revolving credit facility. As of the termination date, there were no amounts due under the revolving credit facility. The Company recorded an extraordinary loss before tax of $613 due to the write-off of deferred financing costs. The extraordinary loss was recorded in the condensed consolidated statement of income net of a tax benefit of $236. The Company had $4,958 under letters of credit outstanding as of September 28, 2002. As a result of the termination of the revolving credit facility, the Company was required to transfer $5,000 into a separate bank account to support outstanding letters of credit. This amount is reported as restricted cash in the accompanying condensed consolidated financial statements. On October 1, 2002, the Company signed a commitment letter for a $30,000 revolving line of credit through another bank.

        On May 29, 2002, the Company repaid all of the outstanding senior secured term loan facilities, including $14,000 term loan A facility, $41,100 term loan B facility and $13,500 term loan C facility. The Company recorded an extraordinary loss before tax of $1,790 due to the write-off of deferred financing costs. The extraordinary loss was recorded in the condensed consolidated statement of income net of a tax benefit of $698.

        On February 14, 2002, the Company completed a tender offer for $79,728 par value for all of the 13.5% senior subordinated notes. The Company recorded an extraordinary loss before tax of $27,479, due to the payment of premiums related to the early extinguishment of debt ($23,886), the write-off of deferred financing costs ($2,726) and issuance discounts ($867). The extraordinary loss was recorded in the condensed consolidated statement of income net of a tax benefit of $10,717.

        On January 24, 2002, the Company issued $175,000 par value of senior convertible debentures through a private placement offering. On February 11, 2002, the Company issued an additional $10,000 par value of senior convertible debentures through the additional purchase option. The Company received approximately $179,450, net of underwriter discounts. The senior convertible debentures will accrue interest at an initial annual rate of 3.5%, payable semi-annually in arrears, beginning August 1, 2002. The senior convertible debentures will mature in 2022 and are convertible into shares of the Company's common stock at a conversion price of $38.87, subject to adjustment under certain

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circumstances. On or after February 5, 2005, the Company may redeem for cash all or part of the debentures that have not been previously converted at the redemption prices set forth in the purchase agreement. Holders may require the Company to repurchase for cash all or part of their debentures on February 1, 2008, February 1, 2013 or February 1, 2017 at a price equal to 100% of the par value of the debentures plus accrued interest up to but not including the date of repurchase. In addition, upon a change in control of the Company occurring on or prior to February 1, 2022, each holder may require the Company to repurchase all or a portion of such holder's debentures for cash. The Company used a portion of the net proceeds from the senior convertible debenture offering to retire all of the 13.5% senior subordinated notes through the tender offer discussed above.

3. Business Acquisitions

        During the third quarter of 2002, the Company amended the joint venture agreement for Charles River Mexico, which was accounted for under the equity method. The Company gained control over the operations from the date of the amendment. The Company's ownership percentage of 50.1% did not change as a result of this amendment and no additional contributions were made. The Company began consolidating the operations of Charles River Mexico from the date of the amendment. The interests of the outside joint venture partners have been recorded as minority interests, totaling $2,587, in the condensed consolidated balance sheet.

        On June 7, 2002, Charles River Europe GmbH, a wholly owned subsidiary of Charles River Laboratories Inc., the Company's wholly owned subsidiary, acquired 100% of the voting equity interests of privately held Biological Laboratories Europe Limited ("BioLabs"). Consideration, including acquisition expenses, was $22,900, net of cash acquired of $2,998. The consideration consisted of $21,012 in cash and $1,888 in future payments, which are to be paid to certain former shareholders of BioLabs over a three year period. BioLabs, located in western Ireland, provides a broad range of services supporting the discovery, development and manufacturing of pharmaceutical, medical devices and animal and human health products. BioLabs was acquired to strengthen the Company's existing biomedical products and services segment by adding new capabilities to service the large and growing global animal health and medical device industry. The acquisition was recorded as a purchase business combination in accordance with Statement of Financial Accounting Standards No. 141, "Business Combinations". The Company consolidated the operations of BioLabs from the date of acquisition.

        The purchase price allocation for BioLabs has not been completed, however, it is expected to be finalized by the end of fiscal year 2002. The preliminary allocation of the purchase price as of September 28, 2002 is as follows:

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        On January 8, 2001, Charles River Laboratories, Inc. ("CRL"), the Company's wholly owned subsidiary, purchased 100% of the common stock of Pathology Associates International Corporation ("PAI"). Consideration, including acquisition expenses, of $35,238 was paid with respect to this acquisition, consisting of $25,557 of cash and a $12,000 callable convertible note. This acquisition was recorded as a purchase business combination and CRL is consolidating the operations of PAI from the date of acquisition.

        Effective February 27, 2001, CRL acquired Primedica Corporation ("Primedica") for consideration, including acquisition expenses, of $51,107. Consideration was comprised of $25,708 of cash, $16,375 of the Company's common stock and $9,024 in assumed debt. This acquisition was recorded as a purchase business combination and CRL consolidated the operations of Primedica from the date of acquisition.

        On July 20, 2001, CRL purchased 100% of the common stock of Genetic Models, Inc. ("GMI") for cash consideration of $4,000. This acquisition was recorded as a purchase business combination in accordance with Statement of Financial Accounting Standards No. 141, "Business Combinations". The Company consolidated the operations of GMI from the date of acquisition.

        The following selected unaudited pro forma consolidated results of operations are presented as if each of the acquisitions had occurred as of the beginning of fiscal year 2001 after giving effect to certain adjustments for the amortization of certain intangible assets, additional interest expense and related income tax effects. The pro forma data is for informational purposes only and does not necessarily reflect the results of operations had the companies operated as one during the period. No effect has been given for synergies, if any, that may have been realized through the acquisitions.

			Three Months Ended						Nine Months Ended
			September 28, 2002			September 29, 2001			September 28, 2002			September 29, 2001
			(as reported)
Net sales			$	141,364		$	126,252		$	415,712		$	360,140
Income before extraordinary item				18,908			11,911			51,094			29,889
Net income				18,531			10,627			32,863			26,785
Earnings per common share before extraordinary item
	Basic		$	0.42		$	0.28		$	1.15		$	0.78
	Diluted		$	0.39		$	0.26		$	1.06		$	0.71
Earnings per common share after extraordinary item
	Basic		$	0.41		$	0.25		$	0.74		$	0.70
	Diluted		$	0.38		$	0.23		$	0.70		$	0.64

        Refer to Note 5 for further discussion of the method of computation of earnings per share.

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4. Restructuring Charges

        During the fourth quarter of 2001, the Company recorded a restructuring charge associated with the closing of a San Diego, California facility. Approximately 40 employees were terminated as a result of this action.

        During the fourth quarter of 2000, the Company recorded a restructuring charge associated with the closing of a facility in France. During 2001, the Company recorded additional charges relating to the settlement of labor disputes which originated during the first quarter of 2001. Approximately 60 employees were terminated as a result of the restructuring.

        A summary of the activities associated with the above restructuring charges and the related liabilities balance as of December 29, 2001 and September 28, 2002 are as follows:

        The Company has closed both the San Diego facility and the French facility and expects the reserves to be fully utilized by the end of fiscal year 2002. All terminated employees had separated from the Company as of September 28, 2002.

5. Earnings per Share

        Basic earnings per share for the three and nine month periods ended September 28, 2002 and September 29, 2001 were computed by dividing earnings available to common shareholders for these periods by the weighted average number of common shares outstanding in the respective periods.

        The weighted average number of common shares outstanding in the three and nine month periods ended September 28, 2002 and September 29, 2001 have been adjusted to include common stock equivalents for the purpose of calculating diluted earnings per share before and after the extraordinary item for these periods.

        Options for 43,900 and 12,525 shares of common stock were outstanding at September 28, 2002 and September 29, 2001, respectively, but were not included in computing diluted earnings per share in each of the respective three month periods because their exercise prices were greater than the average market price of the Company's common stock for the period and their effects were anti-dilutive.

        Options for 83,875 and 732,600 shares of common stock were outstanding at September 28, 2002 and September 29, 2001, respectively, but were not included in computing diluted earnings per share in each of the respective nine month periods because their exercise prices were greater than the average market price of the Company's common stock for the period and their effects were anti-dilutive.

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        The following table illustrates the reconciliation of the numerator and denominator of the basic and diluted earnings per share before and after the extraordinary item computations:

			Three Month Period Ended						Nine Month Period Ended
			September 28, 2002			September 29, 2001			September 28, 2002			September 29, 2001
Numerator:
Income before extraordinary item			$	18,908		$	11,805		$	50,858		$	29,594
Extraordinary loss, net of tax benefit				(377	)		(1,284	)		(18,231	)		(3,104	)
Income after extraordinary item for purposes of calculating basic earnings per share				18,531			10,521			32,627			26,490
After tax equivalent of interest expense:
	3.5% senior convertible debentures			995			—			2,702			—
	2% convertible note			—			27			8			82
Income for purposes of calculating diluted earnings per share			$	19,526		$	10,548		$	35,337		$	26,572
Denominator:
Weighted average shares outstanding—Basic				44,836,974			43,054,478			44,549,632			39,953,655
Effect of dilutive securities:
	3.5% senior convertible debentures			4,759,455			—			4,306,645			—
	Stock options and restricted shares			1,242,543			1,089,075			1,126,372			1,080,878
	Warrants			523,291			1,407,259			678,383			2,266,314
	2% convertible note			—			128,315			11,750			128,315
Weighted average shares outstanding—Diluted				51,362,263			45,679,127			50,672,782			43,429,162
Basic earnings per share before extraordinary item			$	0.42		$	0.27		$	1.14		$	0.74
Basic loss per share on extraordinary item				(0.01	)		(0.03	)		(0.41	)		(0.08	)
Basic earnings per share after extraordinary item			$	0.41		$	0.24		$	0.73		$	0.66
Diluted earnings per share before extraordinary item			$	0.39		$	0.26		$	1.06		$	0.68
Diluted loss per share on extraordinary item				(0.01	)		(0.03	)		(0.36	)		(0.07	)
Diluted earnings per share after extraordinary item			$	0.38		$	0.23		$	0.70		$	0.61

6. Restricted Stock

        Under the Company's 2000 Incentive Plan, restricted common stock of the Company may be granted at no cost to officers and key employees. Plan participants are entitled to cash dividends and to

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vote their respective shares. Restrictions limit the sale or transfer of these shares until they vest, which is typically over a three-year period. Upon issuance of restricted stock awards under the plan, unearned compensation equivalent to the market value at the date of grant is charged to shareholders' equity and subsequently amortized to expense over the restriction period. On July 15, 2002, the Company granted 54,000 restricted stock awards and recorded $1,736 as unearned compensation in shareholders' equity. During the three month and nine month periods ended September 28, 2002, the Company recorded $221 and $287, respectively, in compensation expense for these awards and 11,600 restricted stock awards previously issued.

        Additionally, on July 15, 2002, the Company issued 30,000 performance based restricted stock awards. The vesting of these awards is contingent upon the achievement of certain annual earnings per share growth targets over the vesting period. These shares are accounted for as variable awards and the related unearned compensation and compensation expense will be adjusted based on the closing market price of the Company's common stock until the shares are vested. During the three-month period ended September 28, 2002, the Company recorded $1,155 as unearned compensation and $295 in compensation expense in connection with these awards.

7. Supplemental Balance Sheet Information

        The composition of inventories is as follows:

        Inventories are stated at the lower of cost or market. Cost is determined principally on the average cost method.

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        The composition of property, plant and equipment is as follows:

8. Comprehensive Income

        The components of comprehensive income for the three and nine month periods ended September 28, 2002 and September 29, 2001 are set forth below:

		Three Month Period Ended						Nine Month Period Ended
		September 28, 2002			September 29, 2001			September 28, 2002			September 29 2001
Net income		$	18,531		$	10,521		$	32,627		$	26,490
Foreign currency translation adjustment, net of tax			516			1,421			2,489			(2,331	)
Comprehensive income		$	19,047		$	11,942		$	35,116		$	24,159

9. Income Taxes

        In conjunction with the state tax planning initiatives and the completion of the 2001 state income tax returns during the third quarter of 2002, the Company reassessed the valuation allowance on the deferred tax assets associated with state net operating loss carryforwards. As a result of the reassessment, $473 of the valuation allowance was released and recorded as a tax benefit.

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10. Commitments and Contingencies

        Various lawsuits, claims and proceedings of a nature considered normal to its business are pending against the Company. In the opinion of management, the outcome of such proceedings and litigations currently pending will not materially affect the Company's consolidated financial statements.

        On April 27, 2001, the Company's French subsidiaries obtained a favorable legal judgment in a contract dispute, with a damages award of approximately $3,500. The Company has received the full payment for the damage award under the legal judgment. The Company received $2,240 during fiscal year 2001 and the remaining $1,260 during the second quarter of 2002. As the defendant has appealed the decision, the proceeds are included as deferred income in the consolidated balance sheet as of September 28, 2002 and December 29, 2001.

11. Business Segment Information

        The following table presents sales and other financial information by product line segment for the three and nine month periods ended September 28, 2002 and September 29, 2001, respectively. Net sales represent sales to unaffiliated customers originating in entities primarily engaged in either research models or biomedical products and services.

			Three Month Period Ended						Nine Month Period Ended
			September 28, 2002			September 29, 2001			September 28, 2002			September 29, 2001
Research Models
	Net sales		$	56,771		$	50,647		$	170,214		$	148,134
	Gross margin			25,375			20,511			77,534			61,975
	Operating income			18,596			13,476			57,121			40,428
	Depreciation and amortization			2,472			2,474			7,013			7,210
	Capital expenditures			2,954			2,309			9,493			6,701
Biomedical Products and Services
	Net sales		$	84,593		$	73,038		$	241,471		$	191,402
	Gross margin			28,100			22,700			78,300			61,668
	Operating income			17,093			13,394			47,531			34,350
	Depreciation and amortization			3,859			4,738			10,368			12,031
	Capital expenditures			4,354			6,495			12,121			13,829

        A reconciliation of segment operating income to consolidated operating income is as follows:

		Three Month Period Ended						Nine Month Period Ended
		September 28, 2002			September 29, 2001			September 28, 2002			September 29, 2001
Total segment operating income		$	35,689		$	26,870		$	104,652		$	74,778
Unallocated corporate overhead			(3,170	)		(2,858	)		(13,341	)		(6,900	)
Consolidated operating income		$	32,519		$	24,012		$	91,311		$	67,878

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        Total assets attributable to the research models segment as of September 28, 2002 and December 29, 2001 were $386,661 and $335,580, respectively. Total assets attributable to the biomedical products and services segment as of September 28, 2002 and December 29, 2001 were $269,647 and $235,782, respectively.

12. Goodwill and Other Intangible Assets

        Effective at the beginning of fiscal year 2002, the Company adopted Statement of Financial Accounting Standards No. 142, "Goodwill and Other Intangible Assets" (FAS 142), which establishes financial accounting and reporting standards for acquired goodwill and other intangible assets. Under FAS 142, goodwill and indefinite lived intangible assets are no longer amortized but are reviewed at least annually for impairment. Separate intangible assets that have finite useful lives will continue to be amortized over their useful lives.

        FAS 142 requires that goodwill be tested annually for impairment using a two-step process. The first step is to identify a potential impairment and, in transition, this step must be measured as of the beginning of the year of adoption. The Company completed the first step during the second quarter of 2002, which resulted in identifying no potential goodwill impairments as of the beginning of fiscal year 2002. The second step of the goodwill impairment test, which measures the amount of the impairment loss (measured as of the beginning of the year of adoption), is not applicable for fiscal year 2002. Intangible assets deemed to have an indefinite life will be tested for impairment using a one-step process which compares the fair value to the carrying amount of the asset as of the beginning of the fiscal year. Pursuant to the requirements of FAS 142, this impairment test was completed during the first quarter of 2002. The Company has determined that its identifiable intangible assets with indefinite useful lives were not impaired.

        The following table displays goodwill and other intangible assets not subject to amortization and other intangible assets that continue to be subject to amortization:

				September 28, 2002						December 29, 2001
				Gross Carrying Amount			Accumulated Amortization			Gross Carrying Amount			Accumulated Amortization
Goodwill				$	91,065		$	(12,415	)	$	60,866		$	(8,779	)
Other intangible assets not subject to amortization				$	3,438		$	—		$	3,438		$	—
Other intangible assets subject to amortization:
	Assembled workforce				—			—			20,925			(3,542	)
	Customer relationships				19,268			(2,492	)		11,491			(1,724	)
	Customer contracts				3,455			(1,822	)		3,455			(1,111	)
	Trademarks and trade names				3,203			(498	)		3,000			(253	)
	Standard operating procedures				1,281			(307	)		1,208			(156	)
	Other identifiable intangible assets				4,765			(2,017	)		3,237			(1,681	)
Total other intangible assets				$	35,410		$	(7,136	)	$	46,754		$	(8,467	)
		Total goodwill and other intangible assets		$	126,475		$	(19,551	)	$	107,620		$	(17,246	)

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        The changes in the gross carrying amount and accumulated amortization of goodwill from December 29, 2001 to September 28, 2002 are as follows:

			Research Models						Biomedical Products and Services						Total
			Gross Carrying Amount			Accumulated Amortization			Gross Carrying Amount			Accumulated Amortization			Gross Carrying Amount			Accumulated Amortization
Balance at December 29, 2001			$	8,101		$	(1,108	)	$	52,765		$	(7,671	)	$	60,866		$	(8,779	)
Adjustments to goodwill:
	Assembled workforce reclassification			—			—			20,925			(3,542	)		20,925			(3,542	)
	Acquisitions			—			—			8,451			—			8,451			—
	Consolidation of investment in affiliate			—			—			581			—			581			—
	Foreign currency translation			—			—			242			(94	)		242			(94	)
Balance at September 28, 2002			$	8,101		$	(1,108	)	$	82,964		$	(11,307	)	$	91,065		$	(12,415	)

        Estimated amortization expense for each of the next five years is as follows:

        The following selected consolidated results are presented as if Statement of Financial Accounting Standards No. 141, "Business Combinations" and FAS 142 had been adopted at the beginning of fiscal year 2001 and accordingly amortization for goodwill and other identifiable intangible assets has been eliminated.

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13. Recently Issued Accounting Standards

        In April 2002, the Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards No. 145, "Rescission of FASB Statements No. 4, 44, and 64, Amendment of FASB Statement No. 13, and Technical Corrections" (FAS 145). FAS 145 eliminates the requirement that gains and losses from the extinguishment of debt be aggregated and, if material, classified as an extraordinary item, net of the related income tax effect. However, an entity would not be prohibited from classifying such gains and losses as extraordinary items so long as they are both unusual in nature and infrequent in occurrence. This provision of FAS 145 will be effective for the Company as of the beginning of fiscal year 2003. The Company expects to reclassify losses on extinguishment of debt that have been classified as an extraordinary item in prior periods presented.

        In July 2002, the FASB issued Statement of Financial Accounting Standards No. 146, "Accounting for Costs Associated with Exit or Disposal Activities" (FAS 146), which nullifies Emerging Issues Task Force (EITF) Issue No. 94-3, "Liability Recognition for Certain Employee Termination Benefits and Other Costs to Exit an Activity (including Certain Costs Incurred in a Restructuring)". FAS 146 requires a liability for a cost associated with an exit or disposal activity be recognized and measured initially at its fair value in the period in which the liability is incurred. If fair value cannot be reasonably estimated, the liability shall be recognized initially in the period in which fair value can be reasonably estimated. In periods subsequent to the initial measurement, changes to the liability resulting from a revision to either the timing or the amount of estimated cash flows shall be recognized as an adjustment to the liability in the period of the change. The provisions of FAS 146 will be effective for the Company prospectively for exit or disposal activities initiated after December 29, 2002. The Company is in the process of assessing the impact of FAS 146 on its consolidated financial statements.

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14. Subsequent Events

        On October 1, 2002, Charles River Laboratories, Inc. ("CRL"), the Company's wholly owned subsidiary, acquired 100% of the voting equity interests of privately held Springborn Laboratories, Inc. ("SLI"). Consideration was $27,000, of which $21,000 was paid in cash and $6,000 was paid in the form of a three-year unsecured, subordinated note. SLI provides expertise in short to mid-term toxicology studies. SLI was acquired to strengthen the Company's existing biomedical products and services segment. The acquisition will be recorded as a purchase business combination in accordance with FAS 141. The Company will consolidate the operations of SLI from the date of acquisition.

        On October 2, 2002, the Company entered into an agreement with Proteome Systems, Ltd. ("Proteome") to establish a joint venture. The Company will own 80% of the newly established joint venture company, Charles River Proteomics Services, Inc. ("CRPSI"), which will be initially capitalized with $6,000, consisting of $5,000 in cash and a $1,000 working capital loan provided by the Company and Proteome, in proportion to their equity interests. Proteome has an option exercisable until April 2, 2003 to increase its equity position in CRPSI to 40%, while the Company has an option exercisable beginning on January 1, 2006 to purchase up to 100% of the equity in CRPSI. CRPSI was established to strengthen the Company's existing biomedical products and services segment by adding new capabilities in the area of drug discovery and development.

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Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

Nine Months Ended September 28, 2002 Compared to the Nine Months Ended September 29, 2001

        Net Sales.    Net sales for the nine months ended September 28, 2002 were $411.7 million, an increase of $72.2 million, or 21.3%, from $339.5 million for the nine months ended September 29, 2001. On a pro forma basis, sales increased 15.4% for the nine months ended September 28, 2002. Pro forma sales includes net sales of the companies we acquired in 2002 and 2001 as if they occurred at the beginning of fiscal 2001.

        Research Models.    Net sales of research models for the nine months ended September 28, 2002 were $170.2 million, an increase of $22.1 million, or 14.9%, from $148.1 million for the nine months ended September 29, 2001. Small animal research model sales increased in North America by 16.9% due to an increase in unit volume, a shift to higher priced specialty units, improved pricing and the additional models from our 2001 acquisition of Genetic Models, Inc. Excluding positive impact from currency translation of $1.5 million, small animal research model sales in Europe increased 9.6%, driven in part by an increased unit volume and a shift to higher priced specialty units. Small animal research model sales in Japan increased 10.8% for the nine months ended September 28, 2002, excluding the negative impact from currency translation of $1.5 million. The increase is primarily due to increased sales of unique specialty models, through our cooperative agreement with Jackson Laboratory and competitor product quality issues. Sales from our large animal breeding and import conditioning business increased by $4.0 million, or 33.1%, due mainly to the timing of animal shipments for the nine months ended September 28, 2002.

        Biomedical Products and Services.    Net sales of biomedical products and services for the nine months ended September 28, 2002 were $241.5 million, an increase of $50.1 million, or 26.2%, compared to $191.4 million for the nine months ended September 29, 2001. Pro forma sales of biomedical products and services increased 16.9% for the nine months ended September 28, 2002 compared to the nine months ended September 29, 2001. The increase in net sales of biomedical products and services is due to the continued growth in outsourcing in the pharmaceutical industry and our acquisitions. Biological Laboratories Europe Limited ("BioLabs"), which we acquired on June 7, 2002, along with our 2001 acquisition, Primedica Corporation ("Primedica"), contributed $72.3 million of sales for the nine months ended September 28, 2002, compared to $56.7 million from Primedica for the nine months ended September 28, 2001.

        Cost of Products Sold and Services Provided.    Cost of products sold and services provided for the nine months ended September 28, 2002 was $255.9 million, an increase of $40.0 million, or 18.5%, from $215.9 million for the nine months ended September 29, 2001. Cost of products sold and services provided for the nine months ended September 28, 2002 was 62.2% of the net sales which compares favorably to 63.6% for the nine months ended September 29, 2001.

        Research Models.    Cost of products sold and services provided for research models for the nine months ended September 28, 2002 was $92.7 million, an increase of $6.5 million, or 7.5%, compared to $86.2 million for the nine months ended September 29, 2001. Cost of products sold and services provided for the nine months ended September 28, 2002 improved to 54.5% of net sales compared to 58.2% for the nine months ended September 29, 2001. Cost of products sold and services provided increased at a lower rate than net sales due to reduced production costs resulting from the closure of a French facility and increased sales which resulted in improved capacity utilization and better efficiencies.

        Biomedical Products and Services.    Cost of products sold and services provided for biomedical products and services for the nine months ended September 28, 2002 was $163.2 million, an increase of $33.5 million, or 25.8%, compared to $129.7 million for the nine months ended September 29, 2001.

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Cost of products sold and services provided for the nine months ended September 28, 2002 was 67.6% of net sales compared to 67.8% for the nine months ended September 29, 2001.

        Selling, General and Administrative Expenses.    Selling, general and administrative expenses for the nine months ended September 28, 2002 were $62.3 million, an increase of $12.5 million, or 25.1%, from $49.8 million for the nine months ended September 29, 2001. Selling, general and administrative expenses for the nine months ended September 28, 2002 were 15.1% of net sales compared to 14.7% for the nine months ended September 29, 2001.

        Research Models.    Selling, general and administrative expenses for research models for the nine months ended September 28, 2002 were $20.4 million, a decrease of $0.8 million compared to $21.2 million for the nine months ended September 29, 2001. Selling, general and administrative expenses for the nine months ended September 28, 2002 were 12.0% of net sales compared to 14.3% for the nine months ended September 29, 2001, principally due to economies of scale and a charge of $1.2 million associated with the closing of a French facility during the nine months ended September 29, 2001.

        Biomedical Products and Services.    Selling, general and administrative expenses for biomedical products and services for the nine months ended September 28, 2002 were $28.6 million, an increase of $6.9 million, or 31.8%, compared to $21.7 million for the nine months ended September 29, 2001. Selling, general and administrative expenses for the nine months ended September 28, 2002 were 11.8% of net sales compared to 11.3% of net sales for the nine months ended September 29, 2001.

        Unallocated Corporate Overhead.    Unallocated corporate overhead, which consists of various corporate expenses, was $13.3 million for the nine months ended September 28, 2002, compared to $6.9 million for the nine months ended September 29, 2001. The change was caused by decreased pension income and additional costs incurred due to our continued growth as a public company.

        Amortization of Goodwill and Other Intangibles.    Amortization of goodwill and other intangibles for the nine months ended September 28, 2002 was $2.2 million, a decrease of $3.8 million from $6.0 million for the nine months ended September 29, 2001. The decrease was due to the adoption of the Financial Accounting Standards Board Statement of Financial Accounting Standards No. 142, "Goodwill and Other Intangible Assets". During the second quarter of 2002, we completed the goodwill impairment test, which identified no potential goodwill impairment as of the beginning of the fiscal year 2002.

        Operating Income.    Operating income for the nine months ended September 28, 2002 was $91.3 million, an increase of $23.4 million, or 34.5%, from $67.9 million for the nine months ended September 29, 2001. Operating income for the nine months ended September 28, 2002 was 22.2% of net sales compared to 20.0% of net sales for the nine months ended September 29, 2001.

        Research Models.    Operating income from sales of research models for the nine months ended September 28, 2002 was $57.1 million, an increase of $16.7 million, or 41.3%, from $40.4 million for the nine months ended September 29, 2001. Operating income from sales of research models for the nine months ended September 28, 2002 was 33.5% of net sales compared to 27.3% for the nine months ended September 29, 2001 due to increased sales and higher gross margins primarily from improved capacity utilization along with higher production cost efficiency as well as lower selling, general and administrative expenses.

        Biomedical Products and Services.    Operating income from sales of biomedical products and services for the nine months ended September 28, 2002 was $47.5 million, an increase of $13.1 million, or 38.1%, from $34.4 million for the nine months ended September 29, 2001. Operating income from sales of biomedical products and services for the nine months ended September 28, 2002 increased to

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19.7% of net sales compared to 18.0% for the nine months ended September 29, 2001, due to the benefit associated with the elimination of goodwill amortization.

        Interest Expense.    Interest expense for the nine months ended September 28, 2002 was $9.2 million compared to $18.4 million for the nine months ended September 29, 2001. The $9.2 million decrease is primarily due to the impact of the tender offer for all of the 13.5% senior subordinated notes completed during the first quarter of 2002, the payoff of all of the term loans during the second quarter of 2002, and lower interest on the 3.5% senior convertible debentures.

        Other Income.    Other income for the nine months ended September 28, 2002 was $1.0 million compared to $0.5 million for the nine months ended September 29, 2001. The increase is primarily due to net foreign currency gains.

        Income Taxes.    The effective tax rate for the nine months ended September 28, 2002 was 38.5%, excluding a $0.5 million benefit associated with the release of the valuation allowance, compared to the effective tax rate of 39.0% for the nine months ended September 29, 2001. During the third quarter, we reassessed the valuation allowance relating to state income taxes due to recent tax planning initiatives undertaken and the completion of the 2001 state income tax returns. The decrease in the effective tax rate is due to the lower tax rate of our BioLabs acquisition in the second quarter of 2002.

        Income before Extraordinary Loss.    Income before extraordinary loss for the nine months ended September 28, 2002 was $50.9 million, an increase of $21.3 million, or 72.0%, from $29.6 million for the nine months ended September 29, 2001. Income before extraordinary loss for the nine months ended September 28, 2002 was 12.4% of net sales compared to 8.7% for the nine months ended September 29, 2001. The improvement is driven by the increase in operating income, lower effective tax rate and the decrease in interest expense.

        Extraordinary Loss.    We recorded an extraordinary loss of $18.2 million for the nine months ended September 28, 2002. The pre-tax loss of $29.9 million is the result of premiums associated with the debt repayments and the write-off of deferred financing costs and original issuance discounts. The related tax benefit was $11.7 million. In the nine months ended September 29, 2001, we recorded an extraordinary loss of $3.1 million, net of tax benefit of $1.6 million, as a result of the early repayment of debt.

        Net Income.    The net income for the nine months ended September 28, 2002 was $32.6 million, an increase of $6.1 million compared to a net income of $26.5 million for the nine months ended September 29, 2001.

Three Months Ended September 28, 2002 Compared to the Three Months Ended September 29, 2001

        Net Sales.    Net sales for the three months ended September 28, 2002 were $141.4 million, an increase of $17.7 million, or 14.3%, from $123.7 million for the three months ended September 29, 2001. On a pro forma basis, sales increased 12.0% for the three months ended September 28, 2002. Pro forma sales includes net sales of the companies we acquired in 2002 and 2001 as if they occurred at the beginning of fiscal 2001.

        Research Models.    Net sales of research models for the three months ended September 28, 2002 were $56.8 million, an increase of $6.2 million, or 12.3%, from $50.6 million for the three months ended September 29, 2001. Small animal research model sales increased in North America by 14.7% due to an increase in unit volume, a shift to higher priced specialty units, improved pricing and the additional models from our 2001 acquisition of Genetic Models, Inc. Excluding positive impact from currency translation of $1.4 million, small animal research model sales in Europe increased 4.7%, driven in part by an increase in unit volume and a shift to higher priced specialty units. Small animal research model sales in Japan increased 3.5% for the three months ended September 28, 2002,

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excluding the positive impact from currency translation of $0.4 million, due to increased sales of unique specialty models through our cooperative agreement with Jackson Laboratory. Sales from our large animal breeding and import conditioning business increased by $0.2 million due mainly to the timing of animal shipments for the three months ended September 28, 2002.

        Biomedical Products and Services.    Net sales of biomedical products and services for the three months ended September 28, 2002 were $84.6 million, an increase of $11.6 million, or 15.9%, compared to $73.0 million for the three months ended September 29, 2001. Pro forma sales of biomedical products and services increased 12.2% for the three months ended September 28, 2002 compared to the three months ended September 29, 2001. The increase in net sales of biomedical products and services is due to the continued growth in outsourcing in the pharmaceutical industry, partially offset by two non-strategic business units that experienced lower sales in the third quarter of 2002 compared to the third quarter of 2001.

        Cost of Products Sold and Services Provided.    Cost of products sold and services provided for the three months ended September 28, 2002 was $87.9 million, an increase of $7.4 million, or 9.2%, from $80.5 million for the three months ended September 29, 2001. Cost of products sold and services provided for the three months ended September 28, 2002 was 62.2% of the net sales which compares favorably to 65.1% for the three months ended September 29, 2001.

        Research Models.    Cost of products sold and services provided for research models for the three months ended September 28, 2002 was $31.4 million, an increase of $1.3 million, compared to $30.1 million for the three months ended September 29, 2001. Cost of products sold and services provided for the three months ended September 28, 2002 improved to 55.3% of net sales compared to 59.5% for the three months ended September 29, 2001. Cost of products sold and services provided increased at a lower rate than net sales due to reduced production costs resulting from the closure of a French facility and increased sales which resulted in improved capacity utilization and better efficiencies.

        Biomedical Products and Services.    Cost of products sold and services provided for biomedical products and services for the three months ended September 28, 2002 was $56.5 million, an increase of $6.2 million, or 12.3%, compared to $50.3 million for the three months ended September 29, 2001. Cost of products sold and services provided as a percentage of net sales improved to 66.8% for the three months ended September 28, 2002 from 68.9% for the three months ended September 29, 2001.

        Selling, General and Administrative Expenses.    Selling, general and administrative expenses for the three months ended September 28, 2002 were $20.0 million, an increase of $3.0 million, or 17.6%, from $17.0 million for the three months ended September 29, 2001. Selling, general and administrative expenses for the three months ended September 28, 2002 was 14.1% of net sales compared to 13.7% for the three months ended September 29, 2001.

        Research Models.    Selling, general and administrative expenses for research models for the three months ended September 28, 2002 were $6.8 million, compared to $7.0 million for the three months ended September 29, 2001. Selling, general and administrative expenses for the three months ended September 28, 2002 was 12.0% of net sales compared to 13.8% for the three months ended September 29, 2001, principally due to economies of scale.

        Biomedical Products and Services.    Selling, general and administrative expenses for biomedical products and services for the three months ended September 28, 2002 were $10.1 million, an increase of $3.0 million, or 42.3%, compared to $7.1 million for the three months ended September 29, 2001. Selling, general and administrative expenses for the three months ended September 28, 2002 was 11.9% of net sales compared to 9.7% for the three months ended September 29, 2001.

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        Unallocated Corporate Overhead.    Unallocated corporate overhead, which consists of various corporate expenses, was $3.1 million for the three months ended September 28, 2002, compared to $2.9 million for the three months ended September 29, 2001. The change was caused by decreased pension income and additional costs incurred due to our continued growth as a public company.

        Amortization of Goodwill and Other Intangibles.    Amortization of goodwill and other intangibles for the three months ended September 28, 2002 was $0.9 million, a decrease of $1.3 million from $2.2 million for the three months ended September 29, 2001. The decrease was due to the adoption of the Financial Accounting Standards Board Statement of Financial Accounting Standards No. 142, "Goodwill and Other Intangible Assets".

        Operating Income.    Operating income for the three months ended September 28, 2002 was $32.5 million, an increase of $8.5 million, or 35.4%, from $24.0 million for the three months ended September 29, 2001. Operating income for the three months ended September 28, 2002 was 23.0% of net sales compared to 19.4% for the three months ended September 29, 2001.

        Research Models.    Operating income from sales of research models for the three months ended September 28, 2002 was $18.6 million, an increase of $5.1 million, or 37.8%, from $13.5 million for the three months ended September 29, 2001. Operating income from sales of research models for the three months ended September 28, 2002 was 32.7% of net sales compared to 26.7% for the three months ended September 29, 2001 due to increased sales and higher gross margins primarily from improved capacity utilization along with higher production cost efficiencies as well as lower selling, general and administrative expenses.

        Biomedical Products and Services.    Operating income from sales of biomedical products and services for the three months ended September 28, 2002 was $17.1 million, an increase of $3.7 million, or 27.6%, from $13.4 million for the three months ended September 29, 2001. Operating income from sales of biomedical products and services for the three months ended September 28, 2002 increased to 20.2% of net sales compared to 18.4% for the three months ended September 29, 2001, due to the benefit associated with the elimination of goodwill amortization.

        Interest Expense.    Interest expense for the three months ended September 28, 2002 was $2.3 million, compared to $5.5 million for the three months ended September 29, 2001. The $3.2 million decrease is primarily due to the impact of the tender offer for all of the 13.5% senior subordinated notes completed during the first quarter of 2002, the payoff of all the term loans during the second quarter of 2002, and lower interest on the 3.5% senior convertible debentures.

        Income Taxes.    The effective tax rate for the three months ended September 28, 2002 was 37.6%, excluding a $0.5 million benefit associated with the release of the valuation allowance. During the third quarter, we reassessed the valuation allowance relating to state income taxes due to recent tax planning undertaken and the completion of the 2001 state income tax returns.

        Income before Extraordinary Loss.    Income before extraordinary loss for the three months ended September 28, 2002 was $18.9 million, an increase of $7.1 million, or 60.2%, from $11.8 million for the three months ended September 29, 2001. Income before extraordinary loss for the three months ended September 28, 2002 was 13.4% of net sales compared to 9.5% for the three months ended September 29, 2001. The improvement is driven by the increase in operating income and the decrease in interest expense.

        Extraordinary Loss.    In the three months ended September 28, 2002, we recorded an extraordinary loss of $0.4 million, net of tax benefit of $0.2 million, as a result of the write off of deferred financing costs associated with the termination of the revolving credit facility. In the three months ended September 29, 2001, we recorded an extraordinary loss of $1.3 million, net of tax benefit of

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$0.6 million, as a result of a premium associated with the debt repayments and write off of issuance discounts and deferred financing costs.

        Net Income.    The net income for the three months ended September 28, 2002 was $18.5 million, an increase of $8.0 million compared to a net income of $10.5 million for the three months ended September 29, 2001.

Liquidity and Capital Resources

        Cash and cash equivalents totaled $112.4 million at September 28, 2002 compared with $58.3 million at December 29, 2001. Our principal sources of liquidity are cash from operations as well as cash provided by our equity and debt offerings.

        Net cash provided by operating activities for the nine months ended September 28, 2002 and September 29, 2001 was $89.0 million and $33.5 million, respectively. The increase in cash provided by operations is primarily a result of our increased profitability along with the reduction in accounts receivable. Our Days Sales Outstanding decreased to 65 days as of September 28, 2002 from 74 days as of December 29, 2001.

        Net cash used in investing activities during the nine months ended September 28, 2002 and September 29, 2001 was $43.7 million and $76.0 million, respectively. The decrease in cash used is a result of greater spending on business acquisitions in 2001 compared to 2002.

        Net cash provided by financing activities during the nine months ended September 28, 2002 and September 29, 2001 was $6.9 million and $87.7 million, respectively. During the first quarter of 2002, we issued $185.0 million par value of senior convertible debentures. We used $79.7 million of the proceeds to repay all of the 13.5% senior subordinated notes. A premium of $23.9 million was paid on the early retirement of the 13.5% senior subordinated notes.

        Minimum future payments of the Company's long term debt at September 28, 2002 are as follows:

        During the third quarter of 2002, we terminated the revolving credit facility. On October 1, 2002, we signed a commitment letter for a $30.0 million revolving line of credit through another bank.

        We anticipate that our operating cash flows will be sufficient to meet our anticipated future operating expenses, capital expenditures and debt service obligations as they become due.

Item 3. Quantitative and Qualitative Disclosure About Market Risk

        During the first nine months of 2002, we terminated our revolving credit facility and paid off all of our variable rate term loans, and therefore, are not subject to interest rate risk at this time. Fluctuations in interest rates will not affect the interest payable on the senior convertible debentures, which is fixed.

        We generally do not use financial instruments for trading or other speculative purposes.

        We also have exposure to some foreign currency exchange rate fluctuations for the cash flows received from our foreign affiliates. This risk is mitigated by the fact that their operations are conducted in their respective local currencies. Currently, we do not engage in any foreign currency hedging activities.

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Recently Issued Accounting Standards

        In April 2002, the Financial Accounting Standards Board (FASB) issued Statement of Financial Accounting Standards No. 145, "Rescission of FASB Statements No. 4, 44, and 64, Amendment of FASB Statement No. 13, and Technical Corrections" (FAS 145). FAS 145 eliminates the requirement that gains and losses from the extinguishment of debt be aggregated and, if material, classified as an extraordinary item, net of the related income tax effect. However, an entity would not be prohibited from classifying such gains and losses as extraordinary items so long as they are both unusual in nature and infrequent in occurrence. This provision of FAS 145 will be effective for the Company as of the beginning of fiscal year 2003. The Company expects to reclassify losses on extinguishment of debt that have been classified as an extraordinary item in prior periods presented.

        In July 2002, the FASB issued Statement of Financial Accounting Standards No. 146, "Accounting for Costs Associated with Exit or Disposal Activities" (FAS 146), which nullifies Emerging Issues Task Force (EITF) Issue No. 94-3, "Liability Recognition for Certain Employee Termination Benefits and Other Costs to Exit an Activity (including Certain Costs Incurred in a Restructuring)". FAS 146 requires a liability for a cost associated with an exit or disposal activity be recognized and measured initially at its fair value in the period in which the liability is incurred. If fair value cannot be reasonably estimated, the liability shall be recognized initially in the period in which fair value can be reasonably estimated. In periods subsequent to the initial measurement, changes to the liability resulting from a revision to either the timing or the amount of estimated cash flows shall be recognized as an adjustment to the liability in the period of the change. The provisions of FAS 146 will be effective for the Company prospectively for exit or disposal activities initiated after December 29, 2002. The Company is in the process of assessing the impact of FAS 146 on its consolidated financial statements.

Factors Affecting Future Results

        This document includes "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Forward-looking statements may be identified by the use of words such as "anticipate," "believe," "expect," "estimate," "plan," and "project" and other similar expressions that predict or indicate future events or trends or that are not statements of historical matters. These statements are based on management's current expectations, and involve a number of risks and uncertainties that could cause actual results to differ materially from those stated or implied by the forward-looking statements, and the company expressly does not undertake any duty to update forward-looking statements, which speak only as of the date of this document. Those risks and uncertainties include, but are not limited to: acquisition integration risks; special interest groups; contaminations; industry trends; new displacement technologies; outsourcing trends; USDA and FDA regulation; changes in law; continued availability of products and supplies; loss of key personnel; interest rate and foreign currency exchange rate fluctuations; and changes in generally accepted accounting principles.

Item 4. Controls and Procedures

        (a)  Evaluation of disclosure controls and procedures. Based on their evaluation as of a date within 90 days of the filing date of this Quarterly Report on Form 10-Q, the Company's principal executive officer and principal financial officer have concluded that the Company's disclosure controls and procedures (as defined in Rules 13a-14(c) and 15d-14(c) under the Securities Exchange Act of 1934 (the "Exchange Act") are effective to ensure that information required to be disclosed by the Company in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in Securities and Exchange Commission rules and forms.

        (b)  Changes in internal controls. There were no significant changes in the Company's internal controls or in other factors that could significantly affect these controls subsequent to the date of their evaluation. There were no significant deficiencies or material weaknesses, and therefore there were no corrective actions taken.

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CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
FORM 10-Q
For the Quarterly Period Ended September 28, 2002

Item 6. EXHIBITS AND REPORTS ON FORM 8-K

(a)

No exhibits were filed during the quarter ended September 28, 2002.

(b)

The following report on Form 8-K was filed during the quarter ended September 28, 2002.

        The Company filed a Current Report on Form 8-K on September 24, 2002 to announce, pursuant to Item 9, that Charles River Laboratories, Inc., a wholly owned subsidiary of the Registrant, posted an investor presentation to its corporate website.

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SIGNATURE

        Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

October 31, 2002		CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
		/s/  JAMES C. FOSTER       James C. Foster Chairman, Chief Executive Officer and President
		/s/  THOMAS F. ACKERMAN       Thomas F. Ackerman Sr. Vice President and Chief Financial Officer

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CERTIFICATION PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
AND RULE 13A-14 OF THE EXCHANGE ACT OF 1934

I, James C. Foster, Chief Executive Officer of Charles River Laboratories International, Inc. (the Company) certify that:

1.

I have reviewed this quarterly report on Form 10-Q of the Company;



2.

Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report; and



3.

Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report.



4.

The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and have:

designed such disclosure controls and procedures to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared;

evaluated the effectiveness of the registrant's disclosure controls and procedures as of a date within 90 days prior to the filing date of this quarterly report (the "Evaluation Date"); and

presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date;

5.

The registrant's other certifying officers and I have disclosed, based on our most recent evaluation, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent functions):

all significant deficiencies in the design or operation of internal controls which could adversely affect the registrant's ability to record, process, summarize and report financial data and have identified for the registrant's auditors any material weaknesses in internal controls; and

any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal controls; and

6.

The registrant's other certifying officers and I have indicated in this quarterly report whether there were significant changes in internal controls or in other factors that could significantly affect internal controls subsequent to the date of our most recent evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses.

Dated: October 30, 2002

/s/  JAMES C. FOSTER       James C. Foster Chairman, Chief Executive Officer and President Charles River Laboratories International, Inc.

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CERTIFICATION PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002
AND RULE 13A-14 OF THE EXCHANGE ACT OF 1934

I, Thomas F. Ackerman, Senior Vice President and Chief Financial Officer of Charles River Laboratories International, Inc. (the Company) certify that:

1.

I have reviewed this quarterly report on Form 10-Q of the Company;



2.

Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report; and



3.

Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report.



4.

The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-14 and 15d-14) for the registrant and have:

designed such disclosure controls and procedures to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared;

evaluated the effectiveness of the registrant's disclosure controls and procedures as of a date within 90 days prior to the filing date of this quarterly report (the "Evaluation Date"); and

presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures based on our evaluation as of the Evaluation Date;

5.

The registrant's other certifying officers and I have disclosed, based on our most recent evaluation, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent functions):

all significant deficiencies in the design or operation of internal controls which could adversely affect the registrant's ability to record, process, summarize and report financial data and have identified for the registrant's auditors any material weaknesses in internal controls; and

any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal controls; and

6.

The registrant's other certifying officers and I have indicated in this quarterly report whether there were significant changes in internal controls or in other factors that could significantly affect internal controls subsequent to the date of our most recent evaluation, including any corrective actions with regard to significant deficiencies and material weaknesses.

Dated: October 30, 2002

/s/  THOMAS F. ACKERMAN       Thomas F. Ackerman Senior Vice President and Chief Financial Officer Charles River Laboratories International, Inc.

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CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

        In connection with the quarterly report on Form 10-Q for the period ending September 28, 2002 of Charles River Laboratories International, Inc. (the "Company") as filed with the Securities and Exchange Commission on the date hereof (the "Report"), the undersigned, James C. Foster, Chairman, Chief Executive Officer and President of the Company, hereby certifies, to the best of his knowledge and pursuant to 18 U.S.C. Section 1350, that:

        (1)  the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

        (2)  the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: October 30, 2002

/s/  JAMES C. FOSTER       James C. Foster Chairman, Chief Executive Officer and President Charles River Laboratories International, Inc.

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CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

        In connection with the quarterly report on Form 10-Q for the period ending September 28, 2002 of Charles River Laboratories International, Inc. (the "Company") as filed with the Securities and Exchange Commission on the date hereof (the "Report"), the undersigned, Chief Financial Officer of the Company, hereby certifies, to the best of his knowledge and pursuant to 18 U.S.C. Section 1350, that:

        (1)  the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

        (2)  the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: October 30, 2002

/s/  THOMAS F. ACKERMAN       Thomas F. Ackerman Senior Vice President and Chief Financial Officer Charles River Laboratories International, Inc.

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QuickLinks

Charles River Laboratories International, Inc. [Name of Issuer]
CHARLES RIVER LABORATORIES INTERNATIONAL, INC. FORM 10-Q For the Quarterly Period Ended September 28, 2002 Table of Contents
CHARLES RIVER LABORATORIES INTERNATIONAL, INC. CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) (dollars in thousands except for per share data)
CHARLES RIVER LABORATORIES INTERNATIONAL, INC. CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) (dollars in thousands except for per share data)
CHARLES RIVER LABORATORIES INTERNATIONAL, INC. CONDENSED CONSOLIDATED BALANCE SHEETS (dollars in thousands)
CHARLES RIVER LABORATORIES INTERNATIONAL, INC. CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (dollars in thousands)
CHARLES RIVER LABORATORIES INTERNATIONAL, INC. NOTES TO UNAUDITED CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS (dollars in thousands)
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