About This Deal

CHARLES RIVER LABORATORIES INTERNATIONAL, INC. acquired Retrogenix Limited for $53.9 million, net of $8.5 million cash (plus up to $6.9 million contingent), a transaction completed in March 2021, structured as all cash.

Retrogenix Limited operates in Discovery and Safety Assessment (DSA), is based in United Kingdom. Retrogenix Limited was an early-stage CRO providing specialized bioanalytical services utilizing its proprietary cell microarray technology.

The acquisition of Retrogenix enhances our scientific expertise with additional large molecule and cell therapy discovery capabilities. The purchase price of Retrogenix was $53.9 million, net of $8.5 million in cash.

DSA segment, large-molecule discovery

Deal Terms

Acquirer
CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Target
Retrogenix Limited
Value
$53.9 million, net of $8.5 million cash (plus up to $6.9 million contingent)
Date
March 2021
Type
Full acquisition
Status
Ready

Transaction Details

Target HQ
United Kingdom
Segment
Discovery and Safety Assessment (DSA)
Structure
All cash
Announced
March 30, 2021
Closed
March 30, 2021

In Their Words

The acquisition of Retrogenix enhances our scientific expertise with additional large molecule and cell therapy discovery capabilities. The purchase price of Retrogenix was $53.9 million, net of $8.5 million in cash.Charles River FY2021 10-K, Business Acquisitions note

Advisors

Advisory firms were not disclosed for this transaction.

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Sources: Press release ↗ · Last updated July 8, 2026

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