SCHEDULE 13G/A

RUBRIK INC. CL A

Class A Common Stock, $0.000025 par value · CUSIP: 781154109

Event date: 2025-06-30

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Lightspeed Venture Partners IX, L.P.

  Shares: 5,549,816.00 · Class: 4.0%

• Lightspeed General Partner IX, L.P.

  Shares: 5,549,816.00 · Class: 4.0%

• Lightspeed Ultimate General Partner IX, Ltd.

  Shares: 5,549,816.00 · Class: 4.0%

• Lightspeed SPV I, LLC

  Shares: 2,507,457.00 · Class: 1.8%

• Lightspeed SPV I-B, LLC

  Shares: 1,973,511.00 · Class: 1.5%

• Lightspeed SPV I-C, LLC

  Shares: 1,381,358.00 · Class: 1.0%

• LS SPV Management, LLC

  Shares: 5,862,326.00 · Class: 4.2%

• Lightspeed Venture Partners Select II, L.P.

  Shares: 1,288,410.00 · Class: 1.0%

• Lightspeed General Partner Select II, L.P.

  Shares: 1,288,410.00 · Class: 1.0%

• Lightspeed Ultimate General Partner Select II, Ltd.

  Shares: 1,288,410.00 · Class: 1.0%

• Lightspeed Venture Partners X, L.P.

  Shares: 101,659.00 · Class: 0.1%

• Lightspeed General Partner X, L.P.

  Shares: 101,659.00 · Class: 0.1%

• Lightspeed Ultimate General Partner X, Ltd.

  Shares: 101,659.00 · Class: 0.1%

• Lightspeed Management Company, L.L.C.

  Shares: 0.00 · Class: 0.0%

• Barry Eggers

  Shares: 13,217,635.00 · Class: 9.1%

• Ravi Mhatre

  Shares: 13,354,373.00 · Class: 9.1%

• Peter Nieh

  Shares: 13,317,634.00 · Class: 9.1%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.