X0306 4 2016-12-05 0001102934 CABOT MICROELECTRONICS CORP CCMP 0001630039 Woodland Daniel D. C/O CABOT MICROELECTRONICS CORPORATION 870 N. COMMONS DRIVE AURORA IL 60504 1 VP, Marketing Common Stock 2016-12-05 4 M 0 1107 32.64 A 11532.813 D Common Stock 2016-12-05 4 S 0 1107 59.7307 D 10425.813 D Common Stock 2016-12-05 4 M 0 1403 44.10 A 11828.813 D Common Stock 2016-12-05 4 S 0 1403 59.7307 D 10425.813 D Common Stock 2016-12-05 4 M 0 1055 46.45 A 11480.813 D Common Stock 2016-12-05 4 S 0 1055 59.7307 D 10425.813 D Common Stock 2016-12-05 4 M 0 3925 42.37 A 14350.813 D Common Stock 2016-12-05 4 S 0 3925 59.7307 D 10425.813 D Common Stock 2016-12-05 4 S 0 709 59.9642 D 9716.813 D Common Stock 2016-12-05 4 S 0 201.383 59.85 D 9515.43 D Common Stock 2016-12-05 4 A 0 8900 0 A 18415.43 D Common Stock 2016-12-05 4 F 0 115 60.27 D 18300.43 D Common Stock 2016-12-05 4 F 0 162 60.27 D 18138.43 D Common Stock 2016-12-05 4 F 0 122 60.27 D 18016.43 D Common Stock 2016-12-05 4 F 0 467 60.27 D 17549.43 D Stock Options (Right to Buy) 32.64 2016-12-05 4 M 0 1107 0 D 2013-12-03 2022-12-03 Common Stock 1107 0 D Stock Options (Right to Buy) 44.10 2016-12-05 4 M 0 1403 0 D 2014-12-03 2023-12-03 Common Stock 1403 1403 D Stock Options (Right to Buy) 46.45 2016-12-05 4 M 0 1055 0 D 2015-12-03 2024-12-03 Common Stock 1055 2110 D Stock Options (Right to Buy) 42.37 2016-12-05 4 M 0 3925 0 D 2016-12-03 2025-12-03 Common Stock 3925 11775 D Stock Options (Right to Buy) 60.27 2016-12-05 4 A 0 15800 60.27 A 2017-12-05 2026-12-05 Common Stock 15800 15800 D Sale to cover exercise price of cashless exercise of stock options. 2016 (FY17) Restricted Stock Unit Award Vesting Schedule: 25% 12/05/2017, 25% 12/05/2018, 25% 12/05/2019, 25% 12/05/2020. Withheld to cover for tax purposes as per terms of Omnibus Incentive Plan. 2012 (FY13) Non-Qualified Stock Option Grant Vesting Schedule: 25% 12/1/2013, 25% 12/1/2014, 25% 12/1/2015, 25% 12/1/2016. 2013 (FY14) Non-Qualified Stock Option Grant Vesting Schedule: 25% 12/1/2014, 25% 12/1/2015, 25% 12/1/2016, 25% 12/1/2017. 2014 (FY15) Non-Qualified Stock Option Grant Vesting Schedule: 25% 12/1/2015, 25% 12/1/2016, 25% 12/1/2017, 25% 12/1/2018. 2015 (FY16) Non-Qualified Stock Option Grant Vesting Schedule: 25% 12/03/2016, 25% 12/03/2017, 25% 12/03/2018, 25% 12/03/2019. 2016 (FY17) Non-Qualified Stock Option Grant Vesting Schedule: 25% 12/05/2017, 25% 12/05/2018, 25% 12/05/2019, 25% 12/05/2020. /s/ H. Carol Bernstein (Power of Attorney) 2016-12-06