Charles River Laboratories International, Inc.
MX ˙ BMV ˙ US1598641074
SecurityMX:CRL / Charles River Laboratories International, Inc.
InstitutionAmalgamated Bank
Latest Disclosed Ownership8,947 shares
Latest Disclosed Value $ 1,543
Amalgamated Bank reports 7.73% decrease in ownership of CRL / Charles River Laboratories International, Inc.

On May 8, 2026 - Amalgamated Bank filed a 13F-HR form disclosing ownership of 8,947 shares of Charles River Laboratories International, Inc. (MX:CRL) valued at $1,543 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 9,697 shares of Charles River Laboratories International, Inc.. This represents a change in shares of -7.73% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-08 2026-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 8,947 -750 -7.73 2 0.00 0.0118
2026-02-05 2025-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 9,697 384 4.12 2 0.00 0.0140
2025-10-29 2025-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 9,313 -149 -1.57 1 0.00 0.0104
2025-08-04 2025-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 9,462 -430 -4.35 1 0.00 0.0111
2025-04-25 2025-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 9,892 24 0.24 1 0.00 0.0127
2025-02-04 2024-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 9,868 -253 -2.50 2 0.00 0.0150
2024-10-30 2024-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 10,121 -2,915 -22.36 2 -50.00 0.0164
2024-08-12 2024-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 13,036 2,323 21.68 3 0.00 0.0229
2024-04-23 2024-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 10,713 -5,129 -32.38 3 -33.33 0.0248
2024-02-06 2023-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 15,842 -1,433 -8.30 4 0.00 0.0299
2023-11-08 2023-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 17,275 1,615 10.31 3 0.00 0.0288
2023-08-11 2023-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 15,660 -2,843 -15.37 3 0.00 0.0266
2023-05-02 2023-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 18,503 -964 -4.95 4 -25.00 0.0318
2023-02-10 2022-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 19,467 338 1.77 4 -99.89 0.0378
2022-11-09 2022-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 19,129 262 1.39 3,765 -6.74 0.0363
2022-08-15 2022-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 18,867 -187 -0.98 4,037 -25.39 0.0376
2022-08-25 2022-03-31 13F/A-1 CHARLES RIVER LABORATORIES COM 159864107 19,054 271 1.44 5,411 -23.54 0.0420
2022-06-30 2022-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 19,054 271 5,411 0.0430
2022-02-15 2021-12-31 13F/A-1 CHARLES RIVER LABORATORIES COM 159864107 18,783 -219 -1.15 7,077 -9.76 0.0522
2022-02-15 2021-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 18,783 -219 7,077 0.0522
2021-10-29 2021-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 19,002 -583 -2.98 7,842 8.24 0.0662
2021-08-16 2021-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 19,585 10,483 115.17 7,245 174.64 0.0581
2021-05-13 2021-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 9,102 -782 -7.91 2,638 6.80 0.0989
2021-02-12 2020-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 9,884 39 0.40 2,470 10.81 0.0936
2020-10-30 2020-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 9,845 -253 -2.51 2,229 26.58 0.0969
2020-08-10 2020-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 10,098 -2,955 -22.64 1,761 6.92 0.0815
2020-05-13 2020-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 13,053 -264 -1.98 1,647 -19.03 0.0403
2020-02-13 2019-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 13,317 825 6.60 2,034 22.97 0.0374
2019-11-13 2019-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 12,492 1,392 12.54 1,654 5.02 0.0348
2019-08-14 2019-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 11,100 385 3.59 1,575 1.22 0.0368
2019-05-15 2019-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 10,715 161 1.53 1,556 30.21 0.0377
2019-02-15 2018-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 10,554 2,901 37.91 1,195 16.02 0.0339
2018-11-14 2018-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 7,653 -3,284 -30.03 1,030 -16.12 0.0255
2018-07-18 2018-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 10,937 390 3.70 1,228 9.06 0.0300
2018-05-22 2018-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 10,547 642 6.48 1,126 3.87 0.0299
2018-02-13 2017-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 9,905 514 5.47 1,084 6.90 0.0293
2017-11-09 2017-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 9,391 -58 -0.61 1,014 6.07 0.0316
2017-08-10 2017-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 9,449 1,933 25.72 956 41.42 0.0313
2017-05-12 2017-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 7,516 -1,504 -16.67 676 -1.60 0.0336
2017-02-14 2016-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 9,020 868 10.65 687 1.18 0.0311
2016-11-15 2016-09-30 13F/A-1 CHARLES RIVER LABORATORIES COM 159864107 8,152 -1 -0.01 679 0.00 0.0394
2016-08-16 2016-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 8,153 2,337 40.18 679 53.62 0.0393
2016-05-11 2016-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 5,816 438 8.14 442 2.31 0.0431
2016-02-10 2015-12-31 13F CHARLES RIVER LABORATORIES COM 159864107 5,378 -370 -6.44 432 18.36 0.0533
2015-11-04 2015-09-30 13F CHARLES RIVER LABORATORIES COM 159864107 5,748 79 1.39 365 -8.52 0.0383
2015-07-10 2015-06-30 13F CHARLES RIVER LABORATORIES COM 159864107 5,669 2,220 64.37 399 46.15 0.0392
2015-04-22 2015-03-31 13F CHARLES RIVER LABORATORIES COM 159864107 3,449 3,449 273 0.0333
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.