X0508 4 2026-02-17 0 0001169561 COMMVAULT SYSTEMS INC CVLT 0002110638 Abrahamsen Danielle Nicole 1 COMMVAULT WAY TINTON FALLS NJ 07724 0 1 0 0 Chief Accounting Officer 0 Common Stock 2026-02-17 4 A 0 4564 0 A 10634 D Common Stock 2026-02-18 4 S 0 218 90.28 D 10416 D The common stock is being granted as restricted stock units and is subject to a 3-year vesting schedule, as follows: 33% will vest on the first anniversary of the grant date and 8.375% will vest at the end of each successive three-month period thereafter. Includes shares purchased under the Commvault Employee Stock Purchase Plan on February 13, 2026. Represents shares automatically sold solely to satisfy tax withholding obligations of reporting person on vesting of restricted and performance stock. Proceeds from the sale were submitted to the Internal Revenue Service. /s/ Danielle Abrahamsen 2026-02-19