Director at Charles River (NYSE: CRL) sells 75K shares under 10b5-1 plan

Filing Impact

(Very High)

Filing Sentiment

(Very Negative)

Form Type

Rhea-AI Filing Summary

Charles River Laboratories director James C. Foster reported an open-market sale of 75,000 shares of common stock at $225.00 per share. The sale was executed pursuant to a Rule 10b5-1 Trading Plan adopted on March 6, 2026. After the sale, he holds 31,596 shares directly and additional indirect holdings through various trusts and GRATs.

Insider Trade Summary 10b5-1

Net Seller: 75,000 shares ($16,875,000)

Net Sell 6 txns

Insider FOSTER JAMES C

Role null

Sold 75,000 shs ($16.88M)

Type	Security	Shares	Price	Value
Sale	Common Stock	75,000	$225.00	$16.88M
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 31,596 shares (Direct, null); Common Stock — 10,780 shares (Indirect, 2025 GRAT)

Footnotes (1)

[object Object]

Key Figures

Shares sold: 75,000 shares Sale price: $225.00 per share Approximate transaction value: $16.9M +4 more

7 metrics

Shares sold 75,000 shares Open-market sale of common stock on June 29, 2026

Sale price $225.00 per share Price received for each share sold

Approximate transaction value $16.9M 75,000 shares sold at $225.00 per share

Direct holdings after sale 31,596 shares Common stock held directly following the transaction

Indirect 2024 GRAT holdings 5,423 shares Common stock held indirectly via 2024 GRAT

Indirect trust holdings 155,611 shares Common stock held indirectly by trust

Indirect 2026 GRAT holdings 20,000 shares Common stock held indirectly via 2026 GRAT

Key Terms

Rule 10b5-1 Trading Plan, GRAT, open-market sale, indirect ownership

4 terms

Rule 10b5-1 Trading Plan regulatory

"This sale occurred pursuant to a Rule 10b5-1 Trading Plan that was adopted by the reporting person on March 6, 2026."

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

GRAT financial

"nature_of_ownership: "2024 GRAT" and "2025 GRAT" and "2026 GRAT""

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

indirect ownership financial

"direct_or_indirect: "I", ownership_type: "indirect" for several trust and GRAT holdings"

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/01/2026 - 04:59 PM Accepted by SEC EDGAR 07/01/2026 - 04:59 PM

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

FOSTER JAMES C

(Last)

(First)

(Middle)

C/O CHARLES RIVER LABORATORIES

251 BALLARDVALE STREET

(Street)

WILMINGTON

MASSACHUSETTS

01887

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CHARLES RIVER LABORATORIES INTERNATIONAL, INC. [ CRL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/29/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	06/29/2026		S		75,000⁽¹⁾	D	$225	31,596	D
Common Stock								10,780	I	2025 GRAT
Common Stock								20,000	I	2026 GRAT
Common Stock								155,611	I	By Trust
Common Stock								10,000	I	By Trust Held By Spouse
Common Stock								5,423	I	2024 GRAT

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. This sale occurred pursuant to a Rule 10b5-1 Trading Plan that was adopted by the reporting person on March 6, 2026.

	/s/ James C. Foster	06/30/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did CRL report for James C. Foster?

CRL reported that director James C. Foster sold 75,000 shares of common stock at $225.00 per share. After this open-market sale, he retained 31,596 shares directly, plus additional indirect holdings through several trusts and grantor retained annuity trusts (GRATs).

Was the CRL insider sale made under a Rule 10b5-1 plan?

Yes. The filing states the 75,000-share sale occurred pursuant to a Rule 10b5-1 Trading Plan. The plan was adopted by the reporting person on March 6, 2026, indicating the trade was pre-arranged rather than timed discretionarily around short-term market movements.

How many Charles River (CRL) shares does Foster hold after the sale?

Following the reported sale, Foster holds 31,596 CRL shares directly. The Form 4 also lists several indirect positions, including 5,423 shares in a 2024 GRAT, 10,780 in a 2025 GRAT, 20,000 in a 2026 GRAT, and additional shares in trusts including one held by his spouse.

What indirect CRL holdings are reported for James C. Foster?

The filing shows indirect ownership of 5,423 shares in a 2024 GRAT, 10,780 shares in a 2025 GRAT, 20,000 shares in a 2026 GRAT, 10,000 shares in a trust held by his spouse, and 155,611 shares held by another trust, all in Charles River common stock.

Does this CRL Form 4 include any option exercises or derivative transactions?

No. The derivative section is empty, and the transaction summary shows zero derivative exercises or derivative transactions. The only reported activity is a non-derivative open-market sale of 75,000 shares of Charles River common stock, along with several holding entries for indirect share positions.