Charles River Laboratories number of employees

Charles River Laboratories reported 19,700 employees at December 27, 2025 in its latest annual report, down 400 (2.0%) on the year before. That compares with 20,000 at December 25, 2021. Revenue per employee was $203,826.

Headcount by year

Fiscal year end	Employees	Change	Revenue per employee	Source
December 27, 2025	19,700	−400 (2.0%)	$203,826	10-K, filed February 18, 2026
December 28, 2024	20,100	−1,700 (7.8%)	$201,492	10-K, filed February 19, 2025
December 30, 2023	21,800	+400 (1.9%)	$189,422	10-K, filed February 14, 2024
December 31, 2022	21,400	+1,400 (7.0%)	$185,797	10-K, filed February 22, 2023
December 25, 2021	20,000	—	$177,008	10-K, filed February 16, 2022

What the annual reports say

Human Capital Resources Employees As of December 27, 2025, we had approximately 19,700 employees (including approximately 2,400 science professionals with advanced degrees, including Ph.D.s, D.V.M.s and M.D.s). 2025 annual report
Human Capital Resources Employees As of December 28, 2024, we had approximately 20,100 employees (including approximately 2,550 science professionals with advanced degrees, including Ph.D.s, D.V.M.s and M.D.s). 2024 annual report
Human Capital Resources Employees As of December 30, 2023, we had approximately 21,800 employees (including approximately 2,600 science professionals with advanced degrees, including Ph.D.s, D.V.M.s and M.D.s). 2023 annual report
Human Capital Resources Employees As of December 31, 2022, we had approximately 21,400 employees (including approximately 2,600 science professionals with advanced degrees, including Ph.D.s, D.V.M.s and M.D.s). 2022 annual report
Human Capital Resources Employees As of December 25, 2021, we had approximately 20,000 employees (including approximately 2,000 science professionals with advanced degrees, including Ph.D.s, D.V.M.s and M.D.s). 2021 annual report

Headcount as the company states it in Item 1 of its annual report (some count full-time equivalents or exclude part-time and temporary staff), at the date it gives. Years where the report states no clear total are left out rather than estimated. Changes can reflect acquisitions and disposals as well as hiring and job cuts.

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Figures from Charles River Laboratories's SEC filings (10-K and 10-Q), retrieved October 20, 2026. How we read and check them: methodology and data sources. Not investment advice. Back to Charles River Laboratories.