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(\"LUGP X\") is the general partner of LGP X. Barry Eggers, Ravi Mhatre, and Peter Nieh are the directors of LUGP X and share voting and dispositive power with respect to the shares held by Lightspeed X. Each of LGP X, LUGP X and Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports."}],"balance_after":101659,"derivative":{"underlying":"Class A Common Stock","underlying_shares":304978},"source":{"system":"sec-edgar","filing":"0001415889-25-009156","document":"form4-03282025_120357.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":36,"url":"https://www.sec.gov/Archives/edgar/data/1759394/000141588925009156/form4-03282025_120357.xml","form_type":"4"}},{"id":1189912,"issuer":{"id":2594,"kind":"organization","name":"Rubrik, Inc.","symbol":"RBRK"},"owners":[{"id":77967,"kind":"organization","name":"Lightspeed SPV I, LLC","position":1,"cik":"0001703140","reported_name":"Lightspeed SPV I, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77968,"kind":"organization","name":"Lightspeed SPV I-B, LLC","position":2,"cik":"0001759394","reported_name":"Lightspeed SPV I-B, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77969,"kind":"organization","name":"Lightspeed SPV I-C, LLC","position":3,"cik":"0001827893","reported_name":"Lightspeed SPV I-C, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":31315,"kind":"organization","name":"LS SPV Management, LLC","position":4,"cik":"0001978139","reported_name":"LS SPV Management, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":75076,"kind":"person","name":"Eggers Barry","position":5,"cik":"0001366048","reported_name":"Eggers Barry","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":75077,"kind":"person","name":"Nieh Peter","position":6,"cik":"0001366051","reported_name":"Nieh Peter","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2025-03-27T21:00:01.000Z","date":"2025-03-25","kind":"exercise","planned":false,"acquired":false,"shares":758000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Lightspeed SPV I-C, LLC"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Shares are held by Lightspeed SPV I-C, LLC (\"Lightspeed SPV I-C\"). LS SPV is the manager of Lightspeed SPV I-C. Barry Eggers, Ravi Mhatre, and Peter Nieh are the managing members of LS SPV and share voting and dispositive power with respect to the shares held by Lightspeed SPV I-C. Each of LS SPV and Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports."}],"balance_after":2273358,"derivative":{"underlying":"Class A Common Stock","underlying_shares":758000},"source":{"system":"sec-edgar","filing":"0001415889-25-009156","document":"form4-03282025_120357.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":35,"url":"https://www.sec.gov/Archives/edgar/data/1759394/000141588925009156/form4-03282025_120357.xml","form_type":"4"}},{"id":1189911,"issuer":{"id":2594,"kind":"organization","name":"Rubrik, Inc.","symbol":"RBRK"},"owners":[{"id":77967,"kind":"organization","name":"Lightspeed SPV I, LLC","position":1,"cik":"0001703140","reported_name":"Lightspeed SPV I, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77968,"kind":"organization","name":"Lightspeed SPV I-B, LLC","position":2,"cik":"0001759394","reported_name":"Lightspeed SPV I-B, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77969,"kind":"organization","name":"Lightspeed SPV I-C, LLC","position":3,"cik":"0001827893","reported_name":"Lightspeed SPV I-C, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":31315,"kind":"organization","name":"LS SPV Management, LLC","position":4,"cik":"0001978139","reported_name":"LS SPV Management, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":75076,"kind":"person","name":"Eggers Barry","position":5,"cik":"0001366048","reported_name":"Eggers Barry","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":75077,"kind":"person","name":"Nieh Peter","position":6,"cik":"0001366051","reported_name":"Nieh Peter","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2025-03-27T21:00:01.000Z","date":"2025-03-25","kind":"exercise","planned":false,"acquired":false,"shares":1083000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Lightspeed SPV I-B, LLC"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Shares are held by Lightspeed SPV I-B, LLC (\"Lightspeed SPV I-B\"). LS SPV is the manager of Lightspeed SPV I-B. Barry Eggers, Ravi Mhatre, and Peter Nieh are the managing members of LS SPV and share voting and dispositive power with respect to the shares held by Lightspeed SPV I-B. Each of LS SPV and Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports."}],"balance_after":3247511,"derivative":{"underlying":"Class A Common Stock","underlying_shares":1083000},"source":{"system":"sec-edgar","filing":"0001415889-25-009156","document":"form4-03282025_120357.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":34,"url":"https://www.sec.gov/Archives/edgar/data/1759394/000141588925009156/form4-03282025_120357.xml","form_type":"4"}},{"id":1189910,"issuer":{"id":2594,"kind":"organization","name":"Rubrik, Inc.","symbol":"RBRK"},"owners":[{"id":77967,"kind":"organization","name":"Lightspeed SPV I, LLC","position":1,"cik":"0001703140","reported_name":"Lightspeed SPV I, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77968,"kind":"organization","name":"Lightspeed SPV I-B, LLC","position":2,"cik":"0001759394","reported_name":"Lightspeed SPV I-B, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77969,"kind":"organization","name":"Lightspeed SPV I-C, LLC","position":3,"cik":"0001827893","reported_name":"Lightspeed SPV I-C, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":31315,"kind":"organization","name":"LS SPV Management, LLC","position":4,"cik":"0001978139","reported_name":"LS SPV Management, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":75076,"kind":"person","name":"Eggers Barry","position":5,"cik":"0001366048","reported_name":"Eggers Barry","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":75077,"kind":"person","name":"Nieh Peter","position":6,"cik":"0001366051","reported_name":"Nieh Peter","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2025-03-27T21:00:01.000Z","date":"2025-03-25","kind":"exercise","planned":false,"acquired":false,"shares":1504000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Lightspeed SPV I, LLC"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Shares are held by Lightspeed SPV I, LLC (\"Lightspeed SPV I\"). LS SPV Management, LLC (\"LS SPV\") is the manager of Lightspeed SPV I. Barry Eggers, Ravi Mhatre and Peter Nieh are the managing members of LS SPV and share voting and dispositive power with respect to the shares held by Lightspeed SPV I. Each of LS SPV and Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports."}],"balance_after":4511457,"derivative":{"underlying":"Class A Common Stock","underlying_shares":1504000},"source":{"system":"sec-edgar","filing":"0001415889-25-009156","document":"form4-03282025_120357.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":33,"url":"https://www.sec.gov/Archives/edgar/data/1759394/000141588925009156/form4-03282025_120357.xml","form_type":"4"}},{"id":1189909,"issuer":{"id":2594,"kind":"organization","name":"Rubrik, Inc.","symbol":"RBRK"},"owners":[{"id":77967,"kind":"organization","name":"Lightspeed SPV I, LLC","position":1,"cik":"0001703140","reported_name":"Lightspeed SPV I, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77968,"kind":"organization","name":"Lightspeed SPV I-B, LLC","position":2,"cik":"0001759394","reported_name":"Lightspeed SPV I-B, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77969,"kind":"organization","name":"Lightspeed SPV I-C, LLC","position":3,"cik":"0001827893","reported_name":"Lightspeed SPV I-C, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":31315,"kind":"organization","name":"LS SPV Management, LLC","position":4,"cik":"0001978139","reported_name":"LS SPV Management, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":75076,"kind":"person","name":"Eggers Barry","position":5,"cik":"0001366048","reported_name":"Eggers Barry","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":75077,"kind":"person","name":"Nieh Peter","position":6,"cik":"0001366051","reported_name":"Nieh Peter","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2025-03-27T21:00:01.000Z","date":"2025-03-25","kind":"exercise","planned":false,"acquired":false,"shares":774000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Lightspeed Venture Partners Select II, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares are held by Lightspeed Venture Partners Select II, L.P. (\"Lightspeed Select II\"). Lightspeed General Partner Select II, L.P. (\"LGP Select II\") is the general partner of Lightspeed Select II. Lightspeed Ultimate General Partner Select II, Ltd. (\"LUGP Select II\") is the general partner of LGP Select II. Barry Eggers, Ravi Mhatre and Peter Nieh are the directors of LUGP Select II and share voting and dispositive power with respect to the shares held by Lightspeed Select II. Each of LGP Select II, LUGP Select II and Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports."}],"balance_after":2319410,"derivative":{"underlying":"Class A Common Stock","underlying_shares":774000},"source":{"system":"sec-edgar","filing":"0001415889-25-009156","document":"form4-03282025_120357.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":32,"url":"https://www.sec.gov/Archives/edgar/data/1759394/000141588925009156/form4-03282025_120357.xml","form_type":"4"}},{"id":1189908,"issuer":{"id":2594,"kind":"organization","name":"Rubrik, Inc.","symbol":"RBRK"},"owners":[{"id":77967,"kind":"organization","name":"Lightspeed SPV I, LLC","position":1,"cik":"0001703140","reported_name":"Lightspeed SPV I, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77968,"kind":"organization","name":"Lightspeed SPV I-B, LLC","position":2,"cik":"0001759394","reported_name":"Lightspeed SPV I-B, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77969,"kind":"organization","name":"Lightspeed SPV I-C, LLC","position":3,"cik":"0001827893","reported_name":"Lightspeed SPV I-C, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":31315,"kind":"organization","name":"LS SPV Management, LLC","position":4,"cik":"0001978139","reported_name":"LS SPV Management, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":75076,"kind":"person","name":"Eggers Barry","position":5,"cik":"0001366048","reported_name":"Eggers Barry","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":75077,"kind":"person","name":"Nieh Peter","position":6,"cik":"0001366051","reported_name":"Nieh Peter","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2025-03-27T21:00:01.000Z","date":"2025-03-25","kind":"exercise","planned":false,"acquired":false,"shares":3330000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F40","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F1","text":"Shares are held by Lightspeed Venture Partners IX, L.P. (\"Lightspeed IX\"). Lightspeed General Partner IX, L.P. (\"LGP IX\") is the general partner of Lightspeed IX. Lightspeed Ultimate General Partner IX, Ltd. (\"LUGP IX\") is the general partner of LGP IX. Barry Eggers, Ravi Mhatre and Peter Nieh are the directors of LUGP IX and share voting and dispositive power with respect to the shares held by Lightspeed IX. Each of LGP IX, LUGP IX and Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports."}],"balance_after":9989816,"derivative":{"underlying":"Class A Common Stock","underlying_shares":3330000},"source":{"system":"sec-edgar","filing":"0001415889-25-009156","document":"form4-03282025_120357.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":31,"url":"https://www.sec.gov/Archives/edgar/data/1759394/000141588925009156/form4-03282025_120357.xml","form_type":"4"}},{"id":1189907,"issuer":{"id":2594,"kind":"organization","name":"Rubrik, Inc.","symbol":"RBRK"},"owners":[{"id":77967,"kind":"organization","name":"Lightspeed SPV I, LLC","position":1,"cik":"0001703140","reported_name":"Lightspeed SPV I, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":77968,"kind":"organization","name":"Lightspeed SPV I-B, LLC","position":2,"cik":"0001759394","reported_name":"Lightspeed SPV I-B, 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Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Each share of Class B Common Stock will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the holder into one share of Class A Common Stock."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Shares are held by Lightspeed Venture Partners IX, L.P. (\"Lightspeed IX\"). Lightspeed General Partner IX, L.P. (\"LGP IX\") is the general partner of Lightspeed IX. Lightspeed Ultimate General Partner IX, Ltd. 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