Rubrik, Inc.

Historical 13F Holders

Symbol: RBRK
CUSIP: 781154109
All holders as of: Q2 2026
Type: Equity
Class: CL A

Reported Value, Excluding Options

Total Filings

13D/G Filers

Investors who own more than 5% of a class must file a Schedule 13D or 13G. Every filing for 781154109 since 12/18/2024, newest first.

Filer	% of Class	Shares	Form	Filed
Lightspeed Venture Partners IX, L.P. 13G/A Amendment 4	2.0%	3,297,558	13G/A Amendment 4	8/14/2026 Event 6/30/2026
Lightspeed Venture Partners IX, L.P.	1.9%	3,121,772
Lightspeed General Partner IX, L.P.	1.9%	3,121,772
Lightspeed Ultimate General Partner IX, Ltd.	1.9%	3,121,772
Lightspeed SPV I, LLC	0.9%	1,410,445
Lightspeed SPV I-B, LLC	0.7%	1,110,100
Lightspeed SPV I-C, LLC	0.5%	777,013
LS SPV Management, LLC	2.0%	3,297,558
Lightspeed Venture Partners Select II, L.P.	0.4%	724,730
Lightspeed General Partner Select II, L.P.	0.4%	724,730
Lightspeed Ultimate General Partner Select II, Ltd.	0.4%	724,730
AQR Capital Management, LLC 13G	6.2%	9,948,468	13G	8/13/2026 Event 6/30/2026
AQR Capital Management, LLC	6.2%	9,948,468
AQR Capital Management Holdings, LLC	6.2%	9,948,468
Vanguard Capital Management LLC 13G	5.0%	8,127,004	13G	7/31/2026 Event 6/30/2026
FMR LLC 13G	5.3%	8,396,765.01	13G	5/6/2026 Event 3/31/2026
FMR LLC	5.3%	8,396,765.01
Abigail P. Johnson	5.3%	8,396,765.01
Vanguard Portfolio Management LLC 13G	5.1%	8,059,129	13G	4/29/2026 Event 3/31/2026
BlackRock, Inc. 13G	5.3%	8,266,919	13G	4/27/2026 Event 3/31/2026
Vanguard Group Inc 13G/A Amendment 3	0%	0	13G/A Amendment 3	3/27/2026 Event 3/13/2026
Lightspeed Venture Partners IX, L.P. 13G/A Amendment 3	2.8%	4,396,744	13G/A Amendment 3	2/17/2026 Event 12/31/2025
Lightspeed Venture Partners IX, L.P.	2.6%	4,162,362
Lightspeed General Partner IX, L.P.	2.6%	4,162,362
Lightspeed Ultimate General Partner IX, Ltd.	2.6%	4,162,362
Lightspeed SPV I, LLC	1.2%	1,880,593
Lightspeed SPV I-B, LLC	0.9%	1,480,133
Lightspeed SPV I-C, LLC	0.7%	1,036,018
LS SPV Management, LLC	2.8%	4,396,744
Lightspeed Venture Partners Select II, L.P.	0.6%	966,307
Lightspeed General Partner Select II, L.P.	0.6%	966,307
Lightspeed Ultimate General Partner Select II, Ltd.	0.6%	966,307
Lightspeed Venture Partners X, L.P.	0%	0
Lightspeed General Partner X, L.P.	0%	0
Lightspeed Ultimate General Partner X, Ltd.	0%	0
Lightspeed Management Company, L.L.C.	0%	0
Vanguard Group Inc 13G/A Amendment 2	9.2%	13,016,248	13G/A Amendment 2	10/30/2025 Event 9/30/2025
Bipul Sinha 13D/A Amendment 1	8.9%	13,791,466	13D/A Amendment 1	9/12/2025 Event 9/12/2025
Vanguard Group Inc 13G/A Amendment 1	10.3%	12,769,717	13G/A Amendment 1	9/8/2025 Event 8/29/2025
Lightspeed Venture Partners IX, L.P. 13G/A Amendment 2	9.1%	13,354,373	13G/A Amendment 2	8/14/2025 Event 6/30/2025
Lightspeed Venture Partners IX, L.P.	4.0%	5,549,816
Lightspeed General Partner IX, L.P.	4.0%	5,549,816
Lightspeed Ultimate General Partner IX, Ltd.	4.0%	5,549,816
Lightspeed SPV I, LLC	1.8%	2,507,457
Lightspeed SPV I-B, LLC	1.5%	1,973,511
Lightspeed SPV I-C, LLC	1.0%	1,381,358
LS SPV Management, LLC	4.2%	5,862,326
Lightspeed Venture Partners Select II, L.P.	1.0%	1,288,410
Lightspeed General Partner Select II, L.P.	1.0%	1,288,410
Lightspeed Ultimate General Partner Select II, Ltd.	1.0%	1,288,410
Lightspeed Venture Partners X, L.P.	0.1%	101,659
Lightspeed General Partner X, L.P.	0.1%	101,659
Lightspeed Ultimate General Partner X, Ltd.	0.1%	101,659
Lightspeed Management Company, L.L.C.	0%	0
Barry Eggers	9.1%	13,217,635
Ravi Mhatre	9.1%	13,354,373
Peter Nieh	9.1%	13,317,634
Greylock XIV Limited Partnership 13G/A Amendment 3	3.9%	4,973,830	13G/A Amendment 3	8/14/2025 Event 6/30/2025
Greylock XIV Limited Partnership	3.5%	4,476,448
Greylock XIV-A Limited Partnership	0.2%	248,691
Greylock XIV Principals LLC	0.2%	248,691
Greylock XIV GP LLC	3.9%	4,973,830
Vanguard Group Inc 13G/A Amendment 1	9.7%	12,022,614	13G/A Amendment 1	7/29/2025 Event 6/30/2025
Lightspeed Venture Partners IX, L.P. 13G/A Amendment 1	18.1%	22,784,277	13G/A Amendment 1	5/15/2025 Event 3/31/2025
Lightspeed Venture Partners IX, L.P.	8.8%	9,989,816
Lightspeed General Partner IX, L.P.	8.8%	9,989,816
Lightspeed Ultimate General Partner IX, Ltd.	8.8%	9,989,816
Lightspeed SPV I, LLC	4.2%	4,511,457
Lightspeed SPV I-B, LLC	3.1%	3,247,511
Lightspeed SPV I-C, LLC	2.2%	2,273,358
LS SPV Management, LLC	8.9%	10,032,326
Lightspeed Venture Partners Select II, L.P.	2.2%	2,319,410
Lightspeed General Partner Select II, L.P.	2.2%	2,319,410
Lightspeed Ultimate General Partner Select II, Ltd.	2.2%	2,319,410
Lightspeed Venture Partners X, L.P.	0.1%	101,659
Lightspeed Affiliates X, L.P.	0%	0
Lightspeed General Partner X, L.P.	0.1%	101,659
Lightspeed Ultimate General Partner X, Ltd.	0.1%	101,659
Lightspeed Management Company, L.L.C.	0%	13,213
Barry Eggers	18.0%	22,666,924
Ravi Mhatre	18.1%	22,784,277
Peter Nieh	18.1%	22,766,923
Greylock XIV Limited Partnership 13G/A Amendment 2	9.0%	9,947,659	13G/A Amendment 2	5/7/2025 Event 3/31/2025
Greylock XIV Limited Partnership	8.2%	8,952,895
Greylock XIV-A Limited Partnership	0.5%	497,382
Greylock XIV Principals LLC	0.5%	497,382
Greylock XIV GP LLC	9.0%	9,947,659
Bipul Sinha 13D	9.9%	13,357,285	13D	4/1/2025 Event 3/25/2025
Arvind Nithrakashyap 13G	11.5%	11,343,267	13G	2/14/2025 Event 12/31/2024
Bipul Sinha 13G	13.2%	13,231,946	13G	2/14/2025 Event 12/31/2024
Khosla Ventures V, L.P. 13G/A Amendment 1	2.2%	1,956,551	13G/A Amendment 1	2/14/2025 Event 12/31/2024
Khosla Ventures V, L.P.	0%	0
Khosla Ventures Associates V, LLC	0%	0
Khosla Ventures VI, L.P.	1.2%	1,061,400
Khosla Ventures Associates VI, LLC	1.2%	1,061,400
VK Services, LLC	2.2%	1,956,551
Vinod Khosla	2.2%	1,956,551
Greylock XIV Limited Partnership 13G/A Amendment 1	14.6%	14,921,488	13G/A Amendment 1	2/13/2025 Event 12/31/2024
Greylock XIV Limited Partnership	13.4%	13,429,342
Greylock XIV-A Limited Partnership	0.9%	746,073
Greylock XIV Principals LLC	0.9%	746,073
Greylock XIV GP LLC	14.6%	14,921,488
Norges Bank 13G/A Amendment 1	4.9%	4,244,106	13G/A Amendment 1	2/12/2025 Event 12/31/2024
Vanguard Group Inc 13G	7.3%	6,328,184	13G	1/31/2025 Event 12/31/2024
Greylock XIV Limited Partnership 13G	22.4%	19,895,317	13G	12/19/2024 Event 9/30/2024
Greylock XIV Limited Partnership	20.6%	17,905,789
Greylock XIV-A Limited Partnership	1.4%	994,764
Greylock XIV Principals LLC	1.4%	994,764
Greylock XIV GP LLC	22.4%	19,895,317

13F Holders by Quarter

Period	Filings	Shares, Excl. Options	Value, Excl. Options	Options Value
2026 Q3	27	842 k	$96.4 M	$0
2026 Q2	621	145 M	$10.6 B	$594 M
2026 Q1	503	116 M	$5.69 B	$356 M
2025 Q4	516	116 M	$8.84 B	$622 M
2025 Q3	484	105 M	$8.52 B	$640 M
2025 Q2	429	105 M	$9.33 B	$418 M
2025 Q1	338	82.4 M	$5.03 B	$206 M
2024 Q4	278	67.0 M	$4.38 B	$146 M
2024 Q3	185	54.0 M	$1.73 B	$36.1 M
2024 Q2	148	38.5 M	$1.15 B	$9.36 M