X0202 SCHEDULE 13G 0001167557 XXXXXXXX LIVE Class A Common Stock, $0.000025 par value 06/30/2026 0001943896 Rubrik, Inc. 781154109 3495 DEER CREEK ROAD PALO ALTO CA 94304 Rule 13d-1(b) AQR Capital Management, LLC X1 0 9691080 0 9948468 9948468 N 6.18 IA AQR Capital Management Holdings, LLC X1 0 9691080 0 9948468 9948468 N 6.18 HC Rubrik, Inc. 3495 DEER CREEK ROAD, PALO ALTO, CALIFORNIA 94304 AQR Capital Management, LLC AQR Capital Management Holdings, LLC ONE GREENWICH PLAZA SUITE 130 Greenwich, Connecticut 06830 AQR Capital Management, LLC - UNITED STATES AQR Capital Management Holdings, LLC - UNITED STATES N IA HC 9,948,468 The reported amount includes Convertible Notes representing 481 shares of Class A Common Stock, $0.000025 par value 6.18 AQR Capital Management, LLC - 0 AQR Capital Management Holdings, LLC - 0 AQR Capital Management, LLC - 9,691,080 AQR Capital Management Holdings, LLC - 9,691,080 AQR Capital Management, LLC - 0 AQR Capital Management Holdings, LLC - 0 AQR Capital Management, LLC - 9,948,468 AQR Capital Management Holdings, LLC - 9,948,468 Y Y N See Item 2(a) above. Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. AQR Capital Management Holdings, LLC and AQR Capital Management, LLC hereby agree that this Schedule 13G is filed on behalf of each of the parties. AQR Capital Management, LLC is a wholly owned subsidiary of AQR Capital Management Holdings, LLC. AQR Capital Management, LLC Henry Parkin 08/13/2026 AQR Capital Management Holdings, LLC Henry Parkin 08/13/2026