Charles River CFO Glenn Coleman buys 10 shares

The purchase followed an election to participate made during an open trading window before the quarterly purchase period.

Rhea-AI Filing Summary

Charles River Laboratories International, Inc. EVP & Chief Financial Officer Glenn Coleman purchased 10 shares of common stock at $297.43 per share on September 30, 2026, through the Company's Employee Stock Purchase Plan at fair market value on the purchase date. He held 27,762 shares directly following the purchase. Coleman elected to participate during an open trading window before the quarterly purchase period began; no Rule 10b5-1 plan is reported.

Insider Trade Summary

Net Buyer: 10 shares

Net Buy 1 txn

Insider Coleman Glenn

Role EVP & Chief Financial Officer

Bought 10 shs ($3K)

Type	Security	Shares	Price	Value
Purchase	Common Stock F1	10	$297.43	$3K

Holdings After Transaction: Common Stock — 27,762 shares (Direct)

Footnotes (1)

1. F1. The shares were acquired pursuant to the Company's Employee Stock Purchase Plan at the fair market value of the Company's common stock on the purchase date. The Reporting Person elected to participate in the Plan during an open trading window prior to the commencement of the quarterly purchase period.

Key Figures

Common shares purchased: 10 shares Purchase price: $297.43 per share Direct shares held following purchase: 27,762 shares

3 metrics

Common shares purchased 10 shares September 30, 2026

Purchase price $297.43 per share September 30, 2026

Direct shares held following purchase 27,762 shares Following the September 30, 2026 purchase

Key Terms

Employee Stock Purchase Plan, fair market value, open trading window, quarterly purchase period

4 terms

Employee Stock Purchase Plan financial

"acquired pursuant to the Company's Employee Stock Purchase Plan"

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

fair market value financial

"at the fair market value of the Company's common stock"

The price a willing buyer and a willing seller would agree on for an asset or security when neither is under pressure and both have access to the same information. Think of it as the market’s neutral estimate of what something is worth, like the price two neighbors would settle on for a car after comparing similar listings. Investors care because fair market value guides buying and selling decisions, tax reporting, portfolio valuation, and how accurately company assets are reflected in financial statements.

open trading window financial

"during an open trading window"

A designated period when company executives, directors and certain employees are permitted to buy or sell their employer’s stock under the company’s trading policy because material information has been disclosed. Think of it like scheduled store hours after a big delivery: it reduces the risk of trading on secret information, and investors watch insider activity during these windows as a signal of how those closest to the business view its prospects.

quarterly purchase period financial

"prior to the commencement of the quarterly purchase period"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many CRL shares did Glenn Coleman purchase, and at what price?

Glenn Coleman purchased 10 shares of Charles River Laboratories International, Inc. common stock at $297.43 per share on September 30, 2026, through the Employee Stock Purchase Plan. He held 27,762 shares directly following the purchase.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/02/2026 - 04:28 PM Accepted by SEC EDGAR 10/02/2026 - 04:27 PM Learn about SEC filing dates

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^*

Coleman Glenn

(Last) (First) (Middle)

C/O CHARLES RIVER LABORATORIES

251 BALLARDVALE ST

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/30/2026		P		10(1)	A	$297.43	27,762	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The shares were acquired pursuant to the Company's Employee Stock Purchase Plan at the fair market value of the Company's common stock on the purchase date. The Reporting Person elected to participate in the Plan during an open trading window prior to the commencement of the quarterly purchase period.

	/s/ Glenn Coleman	10/02/2026
	** 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)