X0306 4 2020-11-18 0 0000933974 Brooks Automation, Inc. BRKS 0001525267 Robertson Lindon G C/O BROOKS AUTOMATION, INC. 15 ELIZABETH DRIVE CHELMSFORD MA 01824 0 1 0 0 EVP & Chief Financial Officer Common Stock 2020-11-18 4 S 0 9448 69.62 D 81801 D Common Stock 2020-11-18 4 S 0 4535 69.62 D 77266 D Represents the sale of shares by the reporting person to satisfy the reporting person's obligations with respect to withholding taxes in connection with the vesting on November 15, 2020 of 23,230 performance-based units held by the reporting person and previously reported on Form 4. Represents the weighted average price for shares sold between November 16, 2020 and November 18, 2020 at a range between $68.13 and $71.23. The reporting person will provide to the Securities and Exchange Commission, the issuer and any stockholder, upon request, full information regarding the number of shares purchased or sold at each separate price. Represents the sale of shares by the reporting person to satisfy the reporting person's obligations with respect to withholding taxes in connection with the vesting on November 15, 2020 of 10,448 restricted stock units from three grants held by the reporting person and previously reported on Form 4. /s/ Jason W. Joseph, Attorney-in-fact for Lindon G. Robertson 2020-11-20