X0306 4 2019-11-15 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 2019-11-15 4 A 0 94572 0.00 A 248015 D Common Stock 2019-11-20 4 S 0 43957 45.25 D 204058 D Common Stock 2019-11-20 4 S 0 3640 45.25 D 200418 D Common Stock 2019-11-21 4 S 0 2908 43.22 D 197510 D Represents shares issued upon the vesting of performance-based units granted on November 9, 2016, which were subject to performance-based vesting requirements measured at the three-year period ended September 30, 2019. No amount was paid by the reporting person upon grant or vesting of the performance-based units. 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, 2019 of 94,572 performance-based units held by the reporting person. Represents the weighted average price for shares sold between November 18, 2019 and November 20, 2019 at a range between $44.34 and $46.58. 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, 2019 of 8,015 restricted stock units from two grants held by the reporting person and previously reported on Form 4. 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, 2019 of 6,006 restricted stock units held by the reporting person and previously reported on Form 4. Represents the weighted average price for shares sold at a range between $43.10 and $43.69. 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. /s/ Jason W. Joseph, Attorney-in-fact for Lindon G. Robertson 2019-11-22