X0609 4 2026-06-05 0001100682 CHARLES RIVER LABORATORIES INTERNATIONAL, INC. CRL 0001732091 Girshick Birgit false C/O CHARLES RIVER LABORATORIES 251 BALLARDVALE STREET WILMINGTON MA 01887 1 Chief Executive Officer 0 Common Stock 2026-06-05 4 G 0 3386 0 D 36013 D Common Stock 2026-06-05 4 G 0 3386 0 A 43803 I Revocable Trust Stock Options (Right to Buy) 208.44 2025-05-31 2034-05-31 Common Stock 8722 8722 D Reflects the exempt transfer pursuant to Rule 16a-13 of 3,386 shares held by the reporting person to a revocable trust controlled by the reporting person. /s/ Birgit Girshick 2026-06-05