Company

Charles River Laboratories International Inc.

CRLLife Sciences Tools and Services

Charles River Laboratories International Inc., founded in 1947 and headquartered in Wilmington, Massachusetts, United States, is a premier contract research organization providing comprehensive…

Snapshot

Charles River Laboratories International Inc. is a life sciences tools and services company that has completed 23 disclosed acquisitions and reported $4.02B in latest-year revenue.

Sector
Life Sciences Tools and Services
Ticker
CRL
Revenue (LTM)
$4.02B
Acquisitions
23
Operating margin
0.6%
Latest call
Q1 2026

Business description

Charles River Laboratories International Inc., founded in 1947 and headquartered in Wilmington, Massachusetts, United States, is a premier contract research organization providing comprehensive preclinical and clinical laboratory services. The company’s flagship offerings include in vivo and in vitro testing, toxicology studies, and integrated preclinical development solutions under its CRL Discovery Services. Under the leadership of CEO James C. Foster since 2017, CRL has secured a leading position in the global CRO market with an estimated 15% market share in its preclinical segment. Focused on digital transformation and strategic growth initiatives, the company is poised to achieve an anticipated annual revenue growth of 8-10%.

$4.02B
Revenue (LTM)
23
Acquisitions
0.6%
Operating margin
Q1 2026
Latest call

Financials

View financials
Revenue (FY2025) $4.02B
YoY growth +-0.9%
Operating margin 0.6%
Direction Expanding
Gross margin 33.0%
Net margin -3.5%

Leadership & board

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Acquisitions

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Charles River Laboratories International acquires Inveresk Research Group, Inc.Discovery and Safety Assessment (DSA) · 2004 $1.5 billion Charles River Laboratories International acquires MPI ResearchDiscovery and Safety Assessment (DSA) · 2018 $800 million Charles River Laboratories International acquires WIL ResearchDiscovery and Safety Assessment (DSA) · 2016 $585 million Charles River Laboratories International acquires CitoxlabDiscovery and Safety Assessment (DSA) · 2019 $510 million Charles River Laboratories International acquires HemaCare CorporationManufacturing Support — Biologics / cell therapy · 2020 $379.8 million Charles River Laboratories International acquires Celsis Group LimitedManufacturing Support — Microbial Solutions · 2015 $214.5 million Charles River Laboratories International acquires Argenta and BioFocus (CRO services division of Galapagos NV)Discovery and Safety Assessment (DSA) — Early Discovery · 2014 Charles River Laboratories International acquires Agilux LaboratoriesDiscovery and Safety Assessment (DSA) · 2016 $64.9 million Charles River Laboratories International acquires ChanTestDiscovery and Safety Assessment (DSA) — Early Discovery · 2014 $59.3 million Charles River Laboratories International acquires Oncotest GmbHDiscovery and Safety Assessment (DSA) — In Vivo Discovery · 2015 $36.0 million Charles River Laboratories International acquires Brains On-LineDiscovery and Safety Assessment (DSA) · 2018 $21.3 million Charles River Laboratories International acquires KWS BioTest LimitedDiscovery and Safety Assessment (DSA) · 2018 $20.3 million Charles River Laboratories International acquires Blue Stream LaboratoriesDiscovery and Safety Assessment (DSA) · 2016 $11.7 million Charles River Laboratories International acquires Sunrise Farms, Inc.Manufacturing Support — Avian Vaccine Services · 2015 $9.6 million Charles River Laboratories International acquires VivoPath LLCDiscovery and Safety Assessment (DSA) — In Vivo Discovery · 2014 $2.3 million

Share repurchases

On October 29, 2025, the Board approved a new $1.0 billion stock repurchase authorization replacing the prior $1.0 billion program; the company repurchased 2.1 million shares for $350.0 million in fiscal 2025 and had $1.0 billion remaining as of December 27, 2025.

$1.0 billion
Authorized
$1.0 billion
Remaining
$350.0 million
Repurchased (latest FY)

Competition & customers

Customer concentration

No single client accounted for more than 4% of revenue in fiscal years 2025, 2024, or 2023, or trade receivables as of December 27, 2025 or December 28, 2024.

Recent SEC filings

View on EDGAR
2026-05-11 Leadership change (directors/officers) (+1 more) View filing ↗
2026-05-07 Reported quarterly results View filing ↗
2026-02-25 Regulation FD disclosure View filing ↗
2026-02-18 Leadership change (directors/officers) View filing ↗
2026-02-18 Reported quarterly results View filing ↗
2026-01-13 Reported quarterly results (+1 more) View filing ↗
2026-01-09 Leadership change (directors/officers) View filing ↗
2025-12-03 Regulation FD disclosure View filing ↗
2025-11-17 Other event View filing ↗
2025-11-05 Reported quarterly results View filing ↗
2025-09-16 Leadership change (directors/officers) (+1 more) View filing ↗
2025-08-06 Reported quarterly results View filing ↗
SourcesSEC filings · company financials · earnings transcripts Last updated

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