X0508 4 2025-11-10 0001943896 Rubrik, Inc. RBRK 0002020217 McCarthy Brian K. C/O RUBRIK INC. 3495 DEER CREEK ROAD PALO ALTO CA 94304 false true false false Pres.,Global Sales & Field Ops 1 Class A Common Stock 2025-11-10 4 S 0 6265 75.69 D 353054 D Class A Common Stock 2025-11-10 4 S 0 3735 76.24 D 349319 D This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted July 13, 2025. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $75.04 to $76.03 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $76.04 to $76.52 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote. /s/ Anne-Kathrin Lalendran, Attorney-in-Fact 2025-11-12