Charles River (NYSE: CRL) CEO receives 16,796-share stock-based award

Rhea-AI Filing Summary

FOSTER JAMES C reported acquisition or exercise transactions in this Form 4 filing.

Charles River Laboratories International Chairman, President and CEO James C. Foster received an equity award tied to the company’s common stock. He was granted 16,796 shares at a reference price of $178.61 per share, increasing his directly held stake to 279,693 shares.

According to a footnote, 100% of the unvested restricted stock units from this grant vest on March 2, 2028. Additional common stock is held indirectly through GRATs, trusts and a spouse account, and a separate footnote notes an exempt transfer of 9,220 shares from a 2025 GRAT account to direct holdings.

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

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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 MA 01887

(City) (State) (Zip)

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
X	Officer (give title below)		Other (specify below)
	Chairman, President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026

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

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

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

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	03/02/2026		A		16,796(1)	A	$178.61	279,693(2)	D
Common Stock								5,423	I	2024 GRAT
Common Stock								10,780	I	2025 GRAT
Common Stock								230	I	by Trust
Common Stock								750	I	By Trust
Common Stock								2,250	I	By Trust
Common Stock								10,000	I	Held By Spouse

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. 100% of the unvested restricted stock units vest on March 2, 2028.

2. Reflects the exempt transfer pursuant to Rule 16a-13 of 9,220 shares from the 2025 GRAT account to direct holdings.

	/s/ James C. Foster	03/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What did CRL CEO James C. Foster report in this Form 4 filing?

James C. Foster reported receiving an equity award linked to Charles River common stock. The grant covered 16,796 shares at $178.61 per share, increasing his directly held position to 279,693 shares, plus various indirect holdings through GRATs, trusts and a spouse account.

How many Charles River (CRL) shares were granted to the CEO?

The CEO was granted 16,796 shares of Charles River common stock. This grant is recorded at a reference price of $178.61 per share and represents additional equity-based compensation on top of his existing direct and indirect ownership positions in the company.

When do the CEO’s newly reported CRL restricted stock units vest?

The unvested restricted stock units from this award vest on March 2, 2028. A filing footnote states that 100% of these units vest on that date, meaning the CEO’s ability to receive the underlying shares is tied to this long-term vesting schedule.

How many CRL shares does the CEO own directly after this transaction?

After the reported equity award, the CEO directly holds 279,693 shares of Charles River common stock. This figure reflects his direct ownership only and excludes additional shares held indirectly through GRATs, various trusts, and an account held by his spouse.

What indirect Charles River (CRL) holdings are associated with the CEO?

Indirect holdings include shares in 2024 and 2025 GRAT accounts, several trusts, and an account held by his spouse. The filing also notes an exempt transfer of 9,220 shares from the 2025 GRAT to direct holdings, reallocating ownership form without indicating an open-market trade.

Was there any exempt transfer of CRL shares reported in this Form 4?

Yes. A footnote describes an exempt transfer of 9,220 Charles River shares from a 2025 GRAT account to direct holdings. This transfer is characterized as exempt under Rule 16a-13, indicating a change in ownership form rather than a traditional market purchase or sale.