Charles River Laboratories Officer Files Form 144 to Sell $742K in Common Stock Under Rule 10b5-1 Plan

Transaction Overview

On October 21, 2026, Shannon M. Parisotto, an Officer at Charles River Laboratories International, Inc. ($CRL), filed a Form 144 notice disclosing the intent to sell 2,156 shares of common stock with an aggregate market value of approximately $742,548. The shares originate from a same-day exercise of stock options paid in cash.

Key Filing Details

• Filer: Shannon M. Parisotto (Officer)
• Shares Offered: 2,156 common shares
• Approximate Sale Value: $742,547.96 (~$344.41 per share)
• Shares Outstanding: 47,738,872 shares
• Broker: UBS Financial Services, Inc.
• Trading Plan: Pre-scheduled under a Rule 10b5-1 plan adopted on March 4, 2026.

Prior Sales in Preceding 3 Months

Over the past three months, the insider executed multiple sales under the trading plan:

• 10/05/2026: 981 shares for $302,579.64
• 08/19/2026: 2,039 shares for $599,710.68
• 08/11/2026: 3,714 shares for $1,038,657.24
• 08/05/2026: 5,046 shares for $1,327,098.00

Significance Assessment

The market impact is rated as Low. The proposed sale represents a negligible fraction of the company's 47.7M outstanding shares, stems from an option exercise, and is conducted pursuant to a pre-established Rule 10b5-1 plan established in March 2026.