William D. Barbo - 28 May 2021 Form 4 Insider Report for CHARLES RIVER LABORATORIES INTERNATIONAL, INC. (CRL)

Role: Corporate Executive VP & CCO
Signature: /s/ William D. Barbo
Issuer symbol: CRL
Transactions as of: 28 May 2021
Net transactions value: +$983,213
Form type: 4
Filing time: 01 Jun 2021, 17:53:40 UTC
Next filing: 10 Aug 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CRL	Common Stock	Award	$0	+1,006	+26%	$0.000000	4,824	28 May 2021	Direct	F1
transaction	CRL	Common Stock	Tax liability	$67,936	-201	-4.2%	$337.99	4,623	29 May 2021	Direct
holding	CRL	Common Stock						16,975	28 May 2021	By Trust

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	CRL	Stock Options (Right to Buy)	Award	$1,051,149	+3,110		$337.99	3,110	28 May 2021	Common Stock	3,110	$337.99	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Unvested restricted stock units vest as follows: 251 on May 28, 2022, 252 on May 28, 2023, 251 on May 28, 2024 and 252 on May 28, 2025.
F2	Stock Options vest as follows: 777 on May 28, 2022, 778 on May 28, 2023, 777 on May 28, 2024 and 778 on May 28, 2025.