CRL executive equity grant and tax withholding filed

Charles River Laboratories International, Inc. executive Shannon M. Parisotto reported routine equity compensation activity and related tax withholding.

Rhea-AI Filing Summary

Charles River Laboratories International, Inc. executive Shannon M. Parisotto reported routine equity compensation activity and related tax withholding. On May 29, 2026, she received a grant of 4,361 shares of Common Stock at $180.71 per share as a compensation award. A footnote states that the underlying unvested restricted stock units vest annually on May 29, 2027, 2028, 2029, and 2030.

To cover tax obligations, a total of 721 shares of Common Stock were disposed of through tax-withholding transactions on May 30 and May 31, 2026, each at $180.71 per share. Following these transactions, she directly holds 11,382 shares of Common Stock. As of May 29, 2026, she also has indirect holdings of 28,510 shares through Karpathos Investments LLC and 8,151 shares held by a trust.

Insider Trade Summary

5 transactions reported

Mixed 5 txns

Insider Parisotto Shannon M

Role CEVP, Disc & Safety Assessment

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	170	$180.71	$31K
Exercise Price or Tax Liability	Common Stock	551	$180.71	$100K
Grant/Award	Common Stock	4,361	$180.71	$788K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 11,382 shares (Direct); Common Stock — 8,151 shares (Indirect, By Trust); Common Stock — 28,510 shares (Indirect, by Karpathos Investments LLC)

Footnotes (1)

1. F1. Unvested restricted stock units annually ratably vest on: May 29, 2027; May 29, 2028; May 29, 2029; May 29, 2030.

Key Figures

Equity grant: 4,361 shares Tax-withheld shares: 721 shares Direct holdings after transactions: 11,382 shares +3 more

6 metrics

Equity grant 4,361 shares Common Stock award on May 29, 2026 at $180.71 per share

Tax-withheld shares 721 shares Tax-withholding dispositions on May 30–31, 2026 at $180.71

Direct holdings after transactions 11,382 shares Direct Common Stock ownership following May 31, 2026

Indirect LLC holdings 28,510 shares Held indirectly by Karpathos Investments LLC as of May 29, 2026

Indirect trust holdings 8,151 shares Held indirectly by a trust as of May 29, 2026

Grant reference price $180.71 per share Price used for grant and tax-withholding entries

Key Terms

restricted stock units, tax-withholding disposition, grant, award, or other acquisition, indirect

4 terms

restricted stock units financial

"Unvested restricted stock units annually ratably vest on: May 29, 2027; May 29, 2028; May 29, 2029; May 29, 2030."

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.

tax-withholding disposition financial

"Payment of exercise price or tax liability by delivering securities"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

grant, award, or other acquisition financial

"Grant, award, or other acquisition"

indirect financial

"total_shares_following_transaction: 28510.0000, ownership_type: indirect"

FAQ

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

What equity award did Shannon M. Parisotto report in this CRL Form 4?

She reported receiving a grant of 4,361 shares of Charles River Laboratories common stock at $180.71 per share. A footnote indicates the related restricted stock units will vest in four annual installments on May 29, 2027, 2028, 2029, and 2030.

How many CRL shares were used for tax withholding in this filing?

The filing shows 721 shares of Charles River Laboratories common stock were disposed of through tax-withholding transactions. These occurred on May 30 and May 31, 2026, both at a price of $180.71 per share to cover tax obligations.

How many CRL shares does Shannon M. Parisotto hold directly after these transactions?

After the reported transactions, she directly holds 11,382 shares of Charles River Laboratories common stock. This figure reflects the compensation grant and subsequent tax-withholding dispositions disclosed in the Form 4.

What indirect CRL holdings are reported for Shannon M. Parisotto?

As of May 29, 2026, the Form 4 lists 28,510 shares of Charles River Laboratories common stock held indirectly through Karpathos Investments LLC and an additional 8,151 shares held indirectly by a trust.

How do the restricted stock units for CRL vest for Shannon M. Parisotto?

A footnote explains that the unvested restricted stock units associated with the award vest annually and ratably on four dates: May 29, 2027; May 29, 2028; May 29, 2029; and May 29, 2030, subject to the award terms.

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

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Accepted by SEC EDGAR 06/02/2026 - 04:25 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^*

Parisotto Shannon M

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CEVP, Disc & Safety Assessment

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	05/29/2026		A		4,361(1)	A	$180.71	12,103	D
Common Stock	05/30/2026		F		551	D	$180.71	11,552	D
Common Stock	05/31/2026		F		170	D	$180.71	11,382	D
Common Stock								8,151	I	By Trust
Common Stock								28,510	I	by Karpathos Investments LLC

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. Unvested restricted stock units annually ratably vest on: May 29, 2027; May 29, 2028; May 29, 2029; May 29, 2030.

	/s/ Shannon M. Parisotto	06/02/2026
	** 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)