X0306 4 2021-05-17 0 0001169561 COMMVAULT SYSTEMS INC CVLT 0001560814 Merrill Gary 1 COMMVAULT WAY TINTON FALLS NJ 07724 0 1 0 0 Chief - Business Operations Common Stock 2021-05-17 2021-05-17 4 A 0 7524 0.00 A 7524 D Common Stock 2021-05-17 2021-05-17 4 A 0 3762 0.00 A 11286 D Common Stock 2021-05-17 2021-05-17 4 A 0 3762 0.00 A 15048 D Common Stock 2021-05-18 2021-05-18 4 F 0 1168 67.40 D 13880 D The common stock is being granted as restricted stock units and is subject to a 3-year vesting schedule, as follows: 1/3 on the first anniversary of the grant with the remaining portion vesting in equal quarterly installments thereafter. The common stock is being granted as performance share units (PSUs), 1/3 of which will vest, if at all, on each of the first, second and third anniversaries of the grant date of the award, if on such dates the Company's total shareholder return satisfies specified benchmarks relative to Russell 3000 index. The common stock is being granted as performance share units (PSUs), which will vest, if at all, over a three year period based on the Company's achievement of certain financial performance metrics tied to EBIT and revenue measures. This sale of common stock was made to satisfy certain tax withholding obligations resulting from the vesting of restricted stock units. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $67.29 and 68.14 inclusive. Warren H. Mondschein, Attorney-in-Fact 2021-05-19