CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY AND REDEEMABLE NONCONTROLLING INTERESTS (UNAUDITED) - USD ($)
$ in Thousands |
Total |
Total Charles River Laboratories, Inc. Equity |
Common Stock |
Additional Paid-In Capital |
Retained Earnings |
Accumulated Other Comprehensive Income (Loss) |
Treasury Stock |
Noncontrolling Interest |
| Beginning balance at Dec. 28, 2024 |
$ 41,126
|
|
|
|
|
|
|
|
| Increase (Decrease) in Temporary Equity |
|
|
|
|
|
|
|
|
| Net income (loss) |
75
|
|
|
|
|
|
|
|
| Other comprehensive income (loss), net of tax |
(858)
|
|
|
|
|
|
|
|
| Adjustment of redeemable noncontrolling interests to redemption value |
1,320
|
|
|
|
|
|
|
|
| Ending balance at Mar. 29, 2025 |
41,663
|
|
|
|
|
|
|
|
| Beginning balance (in shares) at Dec. 28, 2024 |
|
|
51,141,000
|
|
|
|
|
|
| Beginning balance at Dec. 28, 2024 |
3,466,952
|
$ 3,461,503
|
$ 511
|
$ 1,966,237
|
$ 1,812,100
|
$ (317,345)
|
$ 0
|
$ 5,449
|
| Beginning balance (in shares) at Dec. 28, 2024 |
|
|
|
|
|
|
0
|
|
| Increase (Decrease) in Stockholders' Equity |
|
|
|
|
|
|
|
|
| Net income (loss) |
25,803
|
25,469
|
|
|
25,469
|
|
|
334
|
| Other comprehensive income (loss), net of tax |
52,099
|
52,099
|
|
|
|
52,099
|
|
|
| Adjustment of redeemable noncontrolling interests to redemption value |
(1,320)
|
(1,320)
|
|
(1,320)
|
|
|
|
|
| Issuance of stock under employee compensation plans (in shares) |
|
|
60,000
|
|
|
|
|
|
| Issuance of stock under employee compensation plans |
1
|
1
|
$ 1
|
|
|
|
|
|
| Purchase of treasury shares (in shares) |
|
|
|
|
|
|
2,086,000
|
|
| Purchase of treasury shares |
(353,132)
|
(353,132)
|
|
|
|
|
$ (353,132)
|
|
| Share repurchase excise tax |
(3,419)
|
(3,419)
|
|
|
|
|
(3,419)
|
|
| Stock-based compensation |
13,135
|
13,135
|
|
13,135
|
|
|
|
|
| Ending balance (in shares) at Mar. 29, 2025 |
|
|
51,201,000
|
|
|
|
|
|
| Ending balance at Mar. 29, 2025 |
3,200,119
|
3,194,336
|
$ 512
|
1,978,052
|
1,837,569
|
(265,246)
|
$ (356,551)
|
5,783
|
| Ending balance (in shares) at Mar. 29, 2025 |
|
|
|
|
|
|
2,086,000
|
|
| Beginning balance at Dec. 28, 2024 |
41,126
|
|
|
|
|
|
|
|
| Ending balance at Sep. 27, 2025 |
40,492
|
|
|
|
|
|
|
|
| Beginning balance (in shares) at Dec. 28, 2024 |
|
|
51,141,000
|
|
|
|
|
|
| Beginning balance at Dec. 28, 2024 |
3,466,952
|
3,461,503
|
$ 511
|
1,966,237
|
1,812,100
|
(317,345)
|
$ 0
|
5,449
|
| Beginning balance (in shares) at Dec. 28, 2024 |
|
|
|
|
|
|
0
|
|
| Ending balance (in shares) at Sep. 27, 2025 |
|
|
51,351,000
|
|
|
|
|
|
| Ending balance at Sep. 27, 2025 |
3,410,325
|
3,405,449
|
$ 514
|
2,015,665
|
1,944,317
|
(191,616)
|
$ (363,431)
|
4,876
|
| Ending balance (in shares) at Sep. 27, 2025 |
|
|
|
|
|
|
2,136,000
|
|
| Beginning balance at Mar. 29, 2025 |
41,663
|
|
|
|
|
|
|
|
| Increase (Decrease) in Temporary Equity |
|
|
|
|
|
|
|
|
| Net income (loss) |
(159)
|
|
|
|
|
|
|
|
| Other comprehensive income (loss), net of tax |
2,527
|
|
|
|
|
|
|
|
| Dividends declared to noncontrolling interests |
(6,458)
|
|
|
|
|
|
|
|
| Adjustment of redeemable noncontrolling interests to redemption value |
2,383
|
|
|
|
|
|
|
|
| Ending balance at Jun. 28, 2025 |
39,956
|
|
|
|
|
|
|
|
| Beginning balance (in shares) at Mar. 29, 2025 |
|
|
51,201,000
|
|
|
|
|
|
| Beginning balance at Mar. 29, 2025 |
3,200,119
|
3,194,336
|
$ 512
|
1,978,052
|
1,837,569
|
(265,246)
|
$ (356,551)
|
5,783
|
| Beginning balance (in shares) at Mar. 29, 2025 |
|
|
|
|
|
|
2,086,000
|
|
| Increase (Decrease) in Stockholders' Equity |
|
|
|
|
|
|
|
|
| Net income (loss) |
52,852
|
52,326
|
|
|
52,326
|
|
|
526
|
| Other comprehensive income (loss), net of tax |
98,779
|
98,779
|
|
|
|
98,779
|
|
|
| Adjustment of redeemable noncontrolling interests to redemption value |
(2,383)
|
(2,383)
|
|
(2,383)
|
|
|
|
|
| Issuance of stock under employee compensation plans (in shares) |
|
|
143,000
|
|
|
|
|
|
| Issuance of stock under employee compensation plans |
1
|
1
|
$ 1
|
|
|
|
|
|
| Purchase of treasury shares (in shares) |
|
|
|
|
|
|
50,000
|
|
| Purchase of treasury shares |
(6,787)
|
(6,787)
|
|
|
|
|
$ (6,787)
|
|
| Stock-based compensation |
17,049
|
17,049
|
|
17,049
|
|
|
|
|
| Ending balance (in shares) at Jun. 28, 2025 |
|
|
51,344,000
|
|
|
|
|
|
| Ending balance at Jun. 28, 2025 |
3,359,630
|
3,353,321
|
$ 513
|
1,992,718
|
1,889,895
|
(166,467)
|
$ (363,338)
|
6,309
|
| Ending balance (in shares) at Jun. 28, 2025 |
|
|
|
|
|
|
2,136,000
|
|
| Increase (Decrease) in Temporary Equity |
|
|
|
|
|
|
|
|
| Net income (loss) |
615
|
|
|
|
|
|
|
|
| Other comprehensive income (loss), net of tax |
(399)
|
|
|
|
|
|
|
|
| Adjustment of redeemable noncontrolling interests to redemption value |
320
|
|
|
|
|
|
|
|
| Ending balance at Sep. 27, 2025 |
40,492
|
|
|
|
|
|
|
|
| Increase (Decrease) in Stockholders' Equity |
|
|
|
|
|
|
|
|
| Net income (loss) |
54,941
|
54,422
|
|
|
54,422
|
|
|
519
|
| Other comprehensive income (loss), net of tax |
(25,149)
|
(25,149)
|
|
|
|
(25,149)
|
|
|
| Dividends declared to noncontrolling interests |
(1,952)
|
|
|
|
|
|
|
(1,952)
|
| Adjustment of redeemable noncontrolling interests to redemption value |
(320)
|
(320)
|
|
(320)
|
|
|
|
|
| Issuance of stock under employee compensation plans (in shares) |
|
|
7,000
|
|
|
|
|
|
| Issuance of stock under employee compensation plans |
1
|
1
|
$ 1
|
|
|
|
|
|
| Purchase of treasury shares |
(93)
|
(93)
|
|
|
|
|
$ (93)
|
|
| Stock-based compensation |
23,267
|
23,267
|
|
23,267
|
|
|
|
|
| Ending balance (in shares) at Sep. 27, 2025 |
|
|
51,351,000
|
|
|
|
|
|
| Ending balance at Sep. 27, 2025 |
3,410,325
|
3,405,449
|
$ 514
|
2,015,665
|
1,944,317
|
(191,616)
|
$ (363,431)
|
4,876
|
| Ending balance (in shares) at Sep. 27, 2025 |
|
|
|
|
|
|
2,136,000
|
|
| Beginning balance at Dec. 27, 2025 |
41,263
|
|
|
|
|
|
|
|
| Increase (Decrease) in Temporary Equity |
|
|
|
|
|
|
|
|
| Net income (loss) |
(477)
|
|
|
|
|
|
|
|
| Other comprehensive income (loss), net of tax |
(434)
|
|
|
|
|
|
|
|
| Dividends declared to noncontrolling interests |
(2,000)
|
|
|
|
|
|
|
|
| Adjustment of redeemable noncontrolling interests to redemption value |
3,548
|
|
|
|
|
|
|
|
| Ending balance at Mar. 28, 2026 |
$ 41,900
|
|
|
|
|
|
|
|
| Beginning balance (in shares) at Dec. 27, 2025 |
49,217,000
|
|
49,217,000
|
|
|
|
|
|
| Beginning balance at Dec. 27, 2025 |
$ 3,169,931
|
3,164,630
|
$ 492
|
1,947,301
|
1,388,620
|
(171,783)
|
$ 0
|
5,301
|
| Beginning balance (in shares) at Dec. 27, 2025 |
0
|
|
|
|
|
|
0
|
|
| Increase (Decrease) in Stockholders' Equity |
|
|
|
|
|
|
|
|
| Net income (loss) |
$ (14,325)
|
(14,843)
|
|
|
(14,843)
|
|
|
518
|
| Other comprehensive income (loss), net of tax |
(19,259)
|
(19,259)
|
|
|
|
(19,259)
|
|
|
| Adjustment of redeemable noncontrolling interests to redemption value |
(3,548)
|
(3,548)
|
|
(3,548)
|
|
|
|
|
| Issuance of stock under employee compensation plans (in shares) |
|
|
125,000
|
|
|
|
|
|
| Issuance of stock under employee compensation plans |
1,223
|
1,223
|
$ 1
|
1,222
|
|
|
|
|
| Purchase of treasury shares (in shares) |
|
|
|
|
|
|
1,175,000
|
|
| Purchase of treasury shares |
(208,285)
|
(208,285)
|
|
|
|
|
$ (208,285)
|
|
| Share repurchase excise tax |
(1,705)
|
(1,705)
|
|
|
|
|
(1,705)
|
|
| Stock-based compensation |
22,381
|
22,381
|
|
22,381
|
|
|
|
|
| Ending balance (in shares) at Mar. 28, 2026 |
|
|
49,342,000
|
|
|
|
|
|
| Ending balance at Mar. 28, 2026 |
2,946,413
|
2,940,594
|
$ 493
|
1,967,356
|
1,373,777
|
(191,042)
|
$ (209,990)
|
5,819
|
| Ending balance (in shares) at Mar. 28, 2026 |
|
|
|
|
|
|
1,175,000
|
|
| Beginning balance at Dec. 27, 2025 |
41,263
|
|
|
|
|
|
|
|
| Ending balance at Sep. 26, 2026 |
$ 43,173
|
|
|
|
|
|
|
|
| Beginning balance (in shares) at Dec. 27, 2025 |
49,217,000
|
|
49,217,000
|
|
|
|
|
|
| Beginning balance at Dec. 27, 2025 |
$ 3,169,931
|
3,164,630
|
$ 492
|
1,947,301
|
1,388,620
|
(171,783)
|
$ 0
|
5,301
|
| Beginning balance (in shares) at Dec. 27, 2025 |
0
|
|
|
|
|
|
0
|
|
| Ending balance (in shares) at Sep. 26, 2026 |
49,699,000
|
|
49,699,000
|
|
|
|
|
|
| Ending balance at Sep. 26, 2026 |
$ 3,232,093
|
3,227,011
|
$ 497
|
2,035,124
|
1,705,362
|
(190,691)
|
$ (323,281)
|
5,082
|
| Ending balance (in shares) at Sep. 26, 2026 |
1,823,000
|
|
|
|
|
|
1,823,000
|
|
| Beginning balance at Mar. 28, 2026 |
$ 41,900
|
|
|
|
|
|
|
|
| Increase (Decrease) in Temporary Equity |
|
|
|
|
|
|
|
|
| Net income (loss) |
187
|
|
|
|
|
|
|
|
| Other comprehensive income (loss), net of tax |
(554)
|
|
|
|
|
|
|
|
| Dividends declared to noncontrolling interests |
(606)
|
|
|
|
|
|
|
|
| Adjustment of redeemable noncontrolling interests to redemption value |
1,610
|
|
|
|
|
|
|
|
| Ending balance at Jun. 27, 2026 |
42,537
|
|
|
|
|
|
|
|
| Beginning balance (in shares) at Mar. 28, 2026 |
|
|
49,342,000
|
|
|
|
|
|
| Beginning balance at Mar. 28, 2026 |
2,946,413
|
2,940,594
|
$ 493
|
1,967,356
|
1,373,777
|
(191,042)
|
$ (209,990)
|
5,819
|
| Beginning balance (in shares) at Mar. 28, 2026 |
|
|
|
|
|
|
1,175,000
|
|
| Increase (Decrease) in Stockholders' Equity |
|
|
|
|
|
|
|
|
| Net income (loss) |
(947)
|
(1,482)
|
|
|
(1,482)
|
|
|
535
|
| Other comprehensive income (loss), net of tax |
(4,947)
|
(4,947)
|
|
|
|
(4,947)
|
|
|
| Adjustment of redeemable noncontrolling interests to redemption value |
(1,610)
|
(1,610)
|
|
(1,610)
|
|
|
|
|
| Issuance of stock under employee compensation plans (in shares) |
|
|
208,000
|
|
|
|
|
|
| Issuance of stock under employee compensation plans |
499
|
499
|
$ 3
|
496
|
|
|
|
|
| Purchase of treasury shares (in shares) |
|
|
|
|
|
|
647,000
|
|
| Purchase of treasury shares |
(112,437)
|
(112,437)
|
|
|
|
|
$ (112,437)
|
|
| Share repurchase excise tax |
(762)
|
(762)
|
|
|
|
|
(762)
|
|
| Stock-based compensation |
19,781
|
19,781
|
|
19,781
|
|
|
|
|
| Ending balance (in shares) at Jun. 27, 2026 |
|
|
49,550,000
|
|
|
|
|
|
| Ending balance at Jun. 27, 2026 |
2,845,990
|
2,839,636
|
$ 496
|
1,986,023
|
1,372,295
|
(195,989)
|
$ (323,189)
|
6,354
|
| Ending balance (in shares) at Jun. 27, 2026 |
|
|
|
|
|
|
1,822,000
|
|
| Increase (Decrease) in Temporary Equity |
|
|
|
|
|
|
|
|
| Net income (loss) |
879
|
|
|
|
|
|
|
|
| Other comprehensive income (loss), net of tax |
82
|
|
|
|
|
|
|
|
| Adjustment of redeemable noncontrolling interest to redemption value |
(325)
|
|
|
|
|
|
|
|
| Ending balance at Sep. 26, 2026 |
43,173
|
|
|
|
|
|
|
|
| Increase (Decrease) in Stockholders' Equity |
|
|
|
|
|
|
|
|
| Net income (loss) |
333,565
|
333,067
|
|
|
333,067
|
|
|
498
|
| Other comprehensive income (loss), net of tax |
5,298
|
5,298
|
|
|
|
5,298
|
|
|
| Dividends declared to noncontrolling interests |
(1,770)
|
|
|
|
|
|
|
(1,770)
|
| Adjustment of redeemable noncontrolling interests to redemption value |
325
|
325
|
|
325
|
|
|
|
|
| Issuance of stock under employee compensation plans (in shares) |
|
|
149,000
|
|
|
|
|
|
| Issuance of stock under employee compensation plans |
28,010
|
28,010
|
$ 1
|
28,009
|
|
|
|
|
| Purchase of treasury shares (in shares) |
|
|
|
|
|
|
1,000
|
|
| Purchase of treasury shares |
(92)
|
(92)
|
|
|
|
|
$ (92)
|
|
| Share repurchase excise tax |
0
|
0
|
|
|
|
|
0
|
|
| Stock-based compensation |
$ 20,767
|
20,767
|
|
20,767
|
|
|
|
|
| Ending balance (in shares) at Sep. 26, 2026 |
49,699,000
|
|
49,699,000
|
|
|
|
|
|
| Ending balance at Sep. 26, 2026 |
$ 3,232,093
|
$ 3,227,011
|
$ 497
|
$ 2,035,124
|
$ 1,705,362
|
$ (190,691)
|
$ (323,281)
|
$ 5,082
|
| Ending balance (in shares) at Sep. 26, 2026 |
1,823,000
|
|
|
|
|
|
1,823,000
|
|