Birgit Girshick - 11 Aug 2026 Form 4 Insider Report for CHARLES RIVER LABORATORIES INTERNATIONAL, INC. (CRL)

Reporting relationship: Chief Executive Officer, Director
Issuer ticker: CRL
Reported as of: 11 Aug 2026
Net transaction value: -$1,819,350
SEC form: 4
Accepted by SEC: 13 Aug 2026, 16:37:36 UTC
Prior SEC filing: 08 Jun 2026
Next SEC filing: 20 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Birgit Girshick

Key filing fact

Birgit Girshick filed Form 4 for CHARLES RIVER LABORATORIES INTERNATIONAL, INC. (CRL) on 13 Aug 2026.

Key facts

This page summarizes Birgit Girshick's Form 4 filing for CHARLES RIVER LABORATORIES INTERNATIONAL, INC. (CRL).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 13 Aug 2026, 16:37.

Change

Previous filing in this sequence was filed on 08 Jun 2026.
Current net transaction value: -$1,819,350.

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 0001732091 Primary reporting owner

Girshick Birgit

Relationship: Chief Executive Officer, Director
Address: C/O CHARLES RIVER LABORATORIES, 251 BALLARDVALE STREET, WILMINGTON
Signature: /s/ Birgit Girshick
Signature date: 12 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: +6,500
Change %: +18%
Price: $179.66^*
Shares after: 42,513
Date: 11 Aug 2026
Ownership: Direct

CRL transaction

Common Stock

Sale

Transaction value: $1,819,350
Shares: -6,500
Change %: -15%
Price: $279.90
Shares after: 36,013
Date: 11 Aug 2026
Ownership: Direct
Footnotes: F1

CRL holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 43,803
Date: 11 Aug 2026
Ownership: Revocable Trust

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: -6,500
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 11 Aug 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 6,500
Exercise price: $179.66

^* 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 3, 2025.