X0306 4 2018-03-13 0001100682 CHARLES RIVER LABORATORIES INTERNATIONAL INC CRL 0001179552 MILNE GEORGE M JR 251 BALLARDVALE STREET WILMINGTON MA 01887 1 Common Stock 2018-03-13 5 G 0 E 2280 0 D 26740 D Common Stock 2018-05-14 4 A 0 2004 0 A 28744 D Common Stock 2018-05-14 4 A 0 839 0 A 29583 D Common Stock 1000 I Held By Spouse Consists of 2,004 unvested restricted stock units that vest upon the earlier of 5/14/2019, or the business day prior to the Company's next annual meeting of shareholders. This grant was made in lieu of director service fees for the term commencing May 8, 2018. The restricted stock units vest upon the earlier of 5/14/2019 or the business day prior to the Company's next annual meeting of shareholders. /s/ George M. Milne, Jr. 2018-05-14