Charles River exec sells 3,714 shares after option exercise

Q: What did CRL executive Shannon M. Parisotto report on this Form 4?

Shannon M. Parisotto reported exercising options for 3,714 CRL shares at $179.66 and selling 3,714 shares at $279.66 on 2026-08-11, under a pre-established Rule 10b5-1 trading plan.

Q: How many Charles River (CRL) shares did Parisotto sell and at what price?

Parisotto sold 3,714 shares of Charles River common stock at a price of $279.66 per share. The sale occurred on 2026-08-11 and followed the exercise of stock options for the same number of shares.

Q: What options did Parisotto exercise in this CRL Form 4 filing?

Parisotto exercised stock options for 3,714 shares of CRL common stock with an exercise price of $179.66 per share. These options had an exercise date of 2021-05-29 and an expiration date of 2030-05-29.

Q: What are Parisotto’s remaining indirect CRL holdings after these transactions?

Indirectly, Parisotto reports 9,680 CRL shares held "By Trust" and 28,510 shares held by Karpathos Investments LLC. These figures reflect indirect ownership positions following the reported 2026-08-11 transactions.

Q: Did Parisotto retain directly held CRL shares after the reported sale?

The filing shows the option position reduced to 0 options after exercising 3,714, and it reports indirect holdings of 9,680 and 28,510 shares. It does not specify a remaining direct common stock balance.

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Form Type

Rhea-AI Filing Summary

Charles River Laboratories International executive Shannon M. Parisotto, CEVP, Discovery & Safety Assessment, exercised stock options for 3,714 shares of common stock at an exercise price of $179.66 per share on 2026-08-11 and sold the same 3,714 shares at $279.66 per share. The exercise and sale were carried out pursuant to a Rule 10b5-1 Trading Plan initially adopted on March 4, 2026. Following these transactions, reported indirect holdings include 9,680 shares held by a trust and 28,510 shares held by Karpathos Investments LLC.

Insider Trade Summary 10b5-1

Exercise and Sale: 3,714 shares ($371K approx. pre-tax spread)

Exercise and Sale 5 txns

Insider Parisotto Shannon M

Role CEVP, Disc & Safety Assessment

Sold 3,714 shs ($1.04M)

Approx. gross sale proceeds $1.04M

Approx. exercise cost $667K

Approx. pre-tax spread $371K

Type	Security	Shares	Price	Value
Exercise	Stock Options (Right to Buy)	3,714	$0.00	$0.00
Exercise	Common Stock	3,714	$179.66	$667K
Sale	Common Stock ^F1	3,714	$279.66	$1.04M
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Stock Options (Right to Buy) — 0 contracts (Direct); Common Stock — 4,807 shares (Direct); Common Stock — 9,680 shares (Indirect, By Trust); Common Stock — 28,510 shares (Indirect, by Karpathos Investments LLC)

Footnotes (1)

F1. This exercise and sale occurred pursuant to a Rule 10b5-1 Trading Plan that was initially adopted on March 4, 2026.

Key Figures

Options Exercised: 3,714 shares Option Exercise Price: $179.66 per share Shares Sold: 3,714 shares +5 more

8 metrics

Options Exercised 3,714 shares Stock options exercised into common stock on 2026-08-11

Option Exercise Price $179.66 per share Exercise price for 3,714 stock options

Shares Sold 3,714 shares Common stock sold on 2026-08-11

Sale Price $279.66 per share Per-share price for 3,714 common shares sold

Indirect Holdings by Trust 9,680 shares Common stock held indirectly "By Trust" after transactions

Indirect Holdings by Karpathos Investments LLC 28,510 shares Common stock held indirectly through Karpathos Investments LLC

Option Expiration Date 2030-05-29 Expiration date of exercised stock options

10b5-1 Plan Adoption Date March 4, 2026 Initial adoption date of Rule 10b5-1 Trading Plan covering the trades

Key Terms

Rule 10b5-1 Trading Plan, Stock Options (Right to Buy), indirect, open market or private transaction

4 terms

Rule 10b5-1 Trading Plan regulatory

"This exercise and sale occurred pursuant to a Rule 10b5-1 Trading Plan"

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.

Stock Options (Right to Buy) financial

"security_title: Stock Options (Right to Buy)"

indirect financial

"ownership_type: indirect, nature_of_ownership: By Trust"

open market or private transaction financial

"transaction_code_description: Sale in open market or private transaction"

FAQ

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

What did CRL executive Shannon M. Parisotto report on this Form 4?

Shannon M. Parisotto reported exercising options for 3,714 CRL shares at $179.66 and selling 3,714 shares at $279.66 on 2026-08-11, under a pre-established Rule 10b5-1 trading plan.

How many Charles River (CRL) shares did Parisotto sell and at what price?

Parisotto sold 3,714 shares of Charles River common stock at a price of $279.66 per share. The sale occurred on 2026-08-11 and followed the exercise of stock options for the same number of shares.

What options did Parisotto exercise in this CRL Form 4 filing?

Parisotto exercised stock options for 3,714 shares of CRL common stock with an exercise price of $179.66 per share. These options had an exercise date of 2021-05-29 and an expiration date of 2030-05-29.

Was the CRL insider transaction by Parisotto under a Rule 10b5-1 plan?

Yes. The filing notes the exercise and sale occurred under a Rule 10b5-1 Trading Plan that was initially adopted on March 4, 2026, indicating the trades were pre-arranged.

What are Parisotto’s remaining indirect CRL holdings after these transactions?

Indirectly, Parisotto reports 9,680 CRL shares held "By Trust" and 28,510 shares held by Karpathos Investments LLC. These figures reflect indirect ownership positions following the reported 2026-08-11 transactions.

Did Parisotto retain directly held CRL shares after the reported sale?

The filing shows the option position reduced to 0 options after exercising 3,714, and it reports indirect holdings of 9,680 and 28,510 shares. It does not specify a remaining direct common stock balance.

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

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Available on EDGAR 08/13/2026 - 04:34 PM EDT Accepted by SEC EDGAR 08/13/2026 - 04:34 PM EDT

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)
08/11/2026

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	08/11/2026		M		3,714	A	$179.66	8,521	D
Common Stock	08/11/2026		S		3,714⁽¹⁾	D	$279.66	4,807	D
Common Stock								9,680	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)
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)
Stock Options (Right to Buy)	$179.66	08/11/2026		M			3,714	05/29/2021	05/29/2030	Common Stock	3,714	$0	0	D

Explanation of Responses:

1. This exercise and sale occurred pursuant to a Rule 10b5-1 Trading Plan that was initially adopted on March 4, 2026.

	/s/ Shannon M. Parisotto	08/12/2026
	** 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