X0609 4 2026-03-30 0001943896 Rubrik, Inc. RBRK 0001309507 MCLAUGHLIN MARK D false C/O RUBRIK INC. 3495 DEER CREEK ROAD PALO ALTO CA 94304 true false false false 0 Class A Common Stock 2026-03-30 4 P 0 10638 47.21 A 13639 D The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $47.03 to $47.42 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 purchased at each separated price within the range set forth in this footnote. /s/ Larry Guo, Attorney-in-Fact 2026-04-01