Lightspeed Venture Partners IX, L.P. - 31 Dec 2025 SCHEDULE 13G/A Report for RUBRIK, INC. Class A Common Stock, $0.000025 par value (RBRK)

Filing Manager
Lightspeed Venture Partners IX, L.P.
Reporting Manager
LS SPV Management, LLC
Security
RUBRIK, INC. Class A Common Stock, $0.000025 par value
Symbol
RBRK
Shares outstanding
157,026,571 shares
Disclosed Ownership
4,396,744 shares
Ownership
2.8%
Form type
SCHEDULE 13G/A
Filing time
17 Feb 2026, 19:01:36 UTC
Date of event
31 Dec 2025
Previous filing
14 Aug 2025
SEC
View on sec.gov

Reporting Managers (14)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Lightspeed Venture Partners IX, L.P. 2.6% 4,162,362 0 4,162,362 /s/ Ravi Mhatre See Note 1
Lightspeed General Partner IX, L.P. 2.6% 4,162,362 0 4,162,362 /s/ Ravi Mhatre By Lightspeed Ultimate General Partner IX, Ltd., its General Partner, By Ravi Mhatre, Director
Lightspeed Ultimate General Partner IX, Ltd. 2.6% 4,162,362 0 4,162,362 /s/ Ravi Mhatre By Ravi Mhatre, Director
Lightspeed SPV I, LLC 1.2% 1,880,593 0 1,880,593 /s/ Ravi Mhatre By LS SPV Management, LLC, its Manager, By Ravi Mhatre, Managing Member
Lightspeed SPV I-B, LLC 0.9% 1,480,133 0 1,480,133 /s/ Ravi Mhatre By LS SPV Management, LLC, its Manager, By Ravi Mhatre, Managing Member
Lightspeed SPV I-C, LLC 0.7% 1,036,018 0 1,036,018 /s/ Ravi Mhatre By LS SPV Management, LLC, its Manager, By Ravi Mhatre, Managing Member
LS SPV Management, LLC 2.8% 4,396,744 0 4,396,744 /s/ Ravi Mhatre By Ravi Mhatre, Managing Member
Lightspeed Venture Partners Select II, L.P. 0.6% 966,307 0 966,307 /s/ Ravi Mhatre See Note 2
Lightspeed General Partner Select II, L.P. 0.6% 966,307 0 966,307 /s/ Ravi Mhatre By Lightspeed Ultimate General Partner Select II, Ltd., its General Partner, By Ravi Mhatre, Director
Lightspeed Ultimate General Partner Select II, Ltd. 0.6% 966,307 0 966,307 /s/ Ravi Mhatre By Ravi Mhatre, Director
Lightspeed Venture Partners X, L.P. 0% 0 0 0 /s/ Ravi Mhatre See Note 3
Lightspeed General Partner X, L.P. 0% 0 0 0 /s/ Ravi Mhatre By Lightspeed Ultimate General Partner X, Ltd., its General Partner, By Ravi Mhatre, Director
Lightspeed Ultimate General Partner X, Ltd. 0% 0 0 0 /s/ Ravi Mhatre By Ravi Mhatre, Director
Lightspeed Management Company, L.L.C. 0% 0 0 0 /s/ Ravi Mhatre By Ravi Mhatre, Managing Member