James C. Foster - 25 Aug 2026 Form 4 Insider Report for CHARLES RIVER LABORATORIES INTERNATIONAL, INC. (CRL)

Reporting relationship
Director
Issuer ticker
CRL
Reported as of
25 Aug 2026
Net transaction value
-$10,068,300
Source evidence Original filing metadata and source links for verification. 4 source fields
SEC form
4
Accepted by SEC
27 Aug 2026, 16:21:29 UTC
Prior SEC filing
11 Aug 2026
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ James C. Foster

Key filing fact

James C. Foster filed Form 4 for CHARLES RIVER LABORATORIES INTERNATIONAL, INC. (CRL) on 27 Aug 2026.

Key facts

  • This page summarizes James C. Foster's Form 4 filing for CHARLES RIVER LABORATORIES INTERNATIONAL, INC. (CRL).
  • 5 reported transactions and 2 derivative rows are listed below.
  • Accepted by SEC: 27 Aug 2026, 16:21.

Change

  • Previous filing in this sequence was filed on 11 Aug 2026.
  • Current net transaction value: -$10,068,300.

Research use

  • This tells you what this filing adds before you inspect full transaction and derivative tables.
  • You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001141722 Primary reporting owner

FOSTER JAMES C

Relationship
Director
Address
C/O CHARLES RIVER LABORATORIES, 251 BALLARDVALE STREET, WILMINGTON
Signature
/s/ James C. Foster
Signature date
26 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CRL transaction

Common Stock

Options Exercise

Transaction value
Shares
+21,132
Change %
+67%
Price
$194.12*
Shares after
52,728
Date
25 Aug 2026
Ownership
Direct
CRL transaction

Common Stock

Options Exercise

Transaction value
Shares
+12,429
Change %
+24%
Price
$208.44*
Shares after
65,157
Date
25 Aug 2026
Ownership
Direct
CRL transaction

Common Stock

Sale

Transaction value
$10,068,300
Shares
-33,561
Change %
-52%
Price
$300.00
Shares after
31,596
Date
25 Aug 2026
Ownership
Direct
Footnotes
F1
CRL holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
5,423
Date
25 Aug 2026
Ownership
2024 GRAT
CRL holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
10,780
Date
25 Aug 2026
Ownership
2025 GRAT
CRL holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
20,000
Date
25 Aug 2026
Ownership
2026 GRAT
CRL holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
155,611
Date
25 Aug 2026
Ownership
By Trust
CRL holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
10,000
Date
25 Aug 2026
Ownership
By Trust Held By Spouse

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

CRL transaction Derivative

Stock Options (Right to Buy)

Options Exercise

Transaction value
Shares
-21,132
Change %
-75%
Price
$0.000000*
Shares after
7,044
Date
25 Aug 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
21,132
Exercise price
$194.12
CRL transaction Derivative

Stock Options (Right to Buy)

Options Exercise

Transaction value
Shares
-12,429
Change %
-50%
Price
$0.000000*
Shares after
12,429
Date
25 Aug 2026
Ownership
Direct
Underlying class
Common Stock
Underlying amount
12,429
Exercise price
$208.44
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 1 footnote

Footnote F1

This exercise and sale occurred pursuant to a Rule 10b5-1 Trading Plan that was initially adopted on March 6, 2026.

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