Charles River director granted 1,438 shares

Enyedy Mark J reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Enyedy Mark J reported acquisition or exercise transactions in this Form 4 filing.

Charles River Laboratories director Mark J. Enyedy reported a stock award of 1,438 shares of Common Stock, valued at $177.62 per share. This was a compensation-related grant rather than an open-market purchase, bringing his direct holdings to 2,384 shares after the transaction.

The award consists of unvested restricted stock units that will vest upon the earlier of May 8, 2027, or the business day before the company’s next annual meeting of shareholders, aligning his compensation with long-term shareholder interests.

Insights

Equity compensation analyst

Routine director stock award with time-based vesting.

Director Mark J. Enyedy received a grant of 1,438 shares of Common Stock at $177.62 per share as a compensation award, not an open-market purchase. After this grant, his direct holdings total 2,384 shares.

The award is structured as unvested restricted stock units that vest on the earlier of May 8, 2027 or the business day before the next annual shareholder meeting. This creates a time-based incentive tied to ongoing board service and company performance.

The filing shows no sales, option exercises, or derivative positions, and no reference to a Rule 10b5-1 trading plan. Overall, this appears to be a standard, low-signal equity compensation event rather than a directional bet on the stock.

Insider Trade Summary

Grant/Award: 1,438 shares

Grant/Award 1 txn

Insider Enyedy Mark J

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,438	$177.62	$255K

Holdings After Transaction: Common Stock — 2,384 shares (Direct)

Footnotes (1)

1. F1. The unvested restricted stock units vest upon the earlier of 5/8/2027 or the business day prior to the Company's next annual meeting of shareholders.

Key Figures

Stock award size: 1,438 shares Grant value per share: $177.62 per share Shares held after grant: 2,384 shares +1 more

4 metrics

Stock award size 1,438 shares Common Stock granted to director on May 8, 2026

Grant value per share $177.62 per share Reported price for the 1,438-share award

Shares held after grant 2,384 shares Total direct Common Stock holdings post-transaction

RSU vesting date May 8, 2027 Earlier of this date or day before next annual meeting

Key Terms

restricted stock units, annual meeting of shareholders, Grant, award, or other acquisition, Common Stock

4 terms

restricted stock units financial

"The unvested restricted stock units vest upon the earlier of 5/8/2027 or the business day prior..."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

annual meeting of shareholders regulatory

"…or the business day prior to the Company's next annual meeting of shareholders."

A yearly gathering where a company’s owners (shareholders) vote on key items like electing the board, approving executive pay, and ratifying auditors, and receive updates on performance and strategy. Think of it as an annual town hall for owners: it matters to investors because outcomes and disclosures can affect leadership, corporate direction, dividend and governance policies, and therefore the company’s risk and potential return.

Grant, award, or other acquisition regulatory

"transaction_code_description": "Grant, award, or other acquisition""

Common Stock financial

"security_title": "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

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

What did Charles River (CRL) director Mark J. Enyedy report on this Form 4?

Mark J. Enyedy reported receiving a grant of 1,438 shares of Charles River Common Stock as an equity award. The grant was recorded at $177.62 per share and increased his direct holdings to 2,384 shares after the transaction, with no shares sold.

Was the CRL Form 4 transaction a stock purchase or a compensation grant?

The Form 4 for CRL shows a compensation-related grant, not an open-market stock purchase. The transaction code "A" indicates a grant, award, or other acquisition, reflecting restricted stock units awarded to director Mark J. Enyedy as part of his equity compensation.

How many CRL shares does Mark J. Enyedy hold after this Form 4 transaction?

Following the reported equity grant, Mark J. Enyedy directly holds 2,384 shares of Charles River Common Stock. This total includes the 1,438-share award disclosed in the filing, which was added to his prior holdings as part of his director compensation package.

At what price was the Charles River (CRL) stock award to Mark J. Enyedy recorded?

The 1,438-share stock award to Mark J. Enyedy was recorded at $177.62 per share. This price reflects the value used for reporting the equity compensation grant on the Form 4, not a cash purchase price paid in an open-market transaction.

When do Mark J. Enyedy’s CRL restricted stock units vest?

The unvested restricted stock units reported for Mark J. Enyedy vest on the earlier of May 8, 2027, or the business day before Charles River’s next annual meeting of shareholders. This vesting schedule ties the award to both time and continued board service.

Does the CRL Form 4 show any stock sales or option exercises by Mark J. Enyedy?

The Form 4 shows no stock sales or option exercises by Mark J. Enyedy. It reports only a single acquisition transaction coded "A" for a grant or award of Common Stock, indicating this filing reflects routine equity compensation activity rather than trading in the open market.

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

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Accepted by SEC EDGAR 05/11/2026 - 04:32 PM EDT 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^*

Enyedy Mark J

(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)
05/08/2026

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	05/08/2026		A		1,438(1)	A	$177.62	2,384	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 unvested restricted stock units vest upon the earlier of 5/8/2027 or the business day prior to the Company's next annual meeting of shareholders.

	/s/ Mark Enyedy	05/11/2026
	** 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)