X0306 4 2018-03-21 0 0000933974 BROOKS AUTOMATION INC BRKS 0001247436 SCHWARTZ STEPHEN S C/O BROOKS AUTOMATION, INC. 15 ELIZABETH DRIVE CHELMSFORD MA 01824 1 1 0 0 CEO Common Stock 2018-03-21 4 S 0 10000 30.00 D 620264 D Common Stock 2018-03-22 4 S 0 3000 30.03 D 617264 D The sales reported on this line item were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 6, 2017. Represents the weighted average price for the shares sold. The shares were sold at per-share prices ranging from $30.00 to $30.10. The reporting person will provide to the SEC, the issuer and any stockholder, upon request, full information regarding the number of shares purchased or sold at each separate price. /s/ Jason W. Joseph, attorney-in-fact for Stephen S. Schwartz 2018-03-23