X0508 4 2025-11-18 0 0001169561 COMMVAULT SYSTEMS INC CVLT 0002035847 DiRico Jennifer Leigh 1 COMMVAULT WAY TINTON FALLS NJ 07724 0 1 0 0 Chief Financial Officer 0 Common Stock 2025-11-18 4 S 0 830 123.58 D 44313 D 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. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $123.58 to $124.29, inclusive. Full information regarding the number of shares sold at each separate price will be provided by the reporting person upon request to the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer. /s/ Danielle Abrahamsen, Attorney-in-Fact 2025-11-20