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RBRK — blockholders· RUBRIK, INC.

Everyone who has reported crossing 5% of this issuer inside the capture window — Schedule 13D (active intent, with its Item-4 purpose) and Schedule 13G (passive by rule) kept apart — each with its full amendment chain and, in the fold, the cover page's sole and shared voting and dispositive power per reporting person. Percents are each group's own as-filed figures and do not add up across filers: two filers can report the same shares.

Positions
12
showing the largest 10
13D · 13G
2 · 22
active · passive filings
Escalations
1
13G → 13D · lower bound
Newest filing
2026-08-14
capture 2024-01-10 → 2026-08-21
Showing the 10 largest of 12 reported positions — a free account opens all 12. Create a free account →See it live on AAPL →
Active — Schedule 13D · 1 position

The filer says it may seek to influence or change control, and states why in Item 4. Open the fold for each reporting person's voting and dispositive power.

FilerForm% of classChangeSharesFiledChainControlFiling
Bipul Sinha13D/A No. 113G → 13D8.9%▼ -1pp13,791,4662025-09-123SEC ↗
Passive — Schedule 13G · 9 positions

Filed passively under Rule 13d-1(b) (qualified institution), (c) (passive investor) or (d) (exempt). A 13G filer is not an activist and files no purpose statement.

FilerForm% of classChangeSharesFiledChainControlFiling
Arvind Nithrakashyap13GExempt11.5%NEW11,343,2672025-02-141SEC ↗
AQR Capital Management, LLC13GQII6.18%NEW9,948,4682026-08-131SEC ↗
FMR LLC13GQII5.3%NEW8,396,7652026-05-061SEC ↗
BlackRock, Inc.13GQII5.3%NEW8,266,9192026-04-271SEC ↗
Vanguard Portfolio Management13GQII5.12%NEW8,059,1292026-04-291SEC ↗
Vanguard Capital Management13GQII5.04%NEW8,127,0042026-07-311SEC ↗
Norges Bank13G/A No. 1QII4.9%first captured4,244,1062025-02-121SEC ↗
Greylock XIV Limited Partnership13G/A No. 3Exempt3.87%▼ -5.12pp4,973,8302025-08-144SEC ↗
Khosla Ventures V, L.P.13G/A No. 1Exempt2.2%first captured1,956,5512025-02-141SEC ↗
Source: SEC EDGAR Schedule 13D/G structured XML (public domain) · newest filing 2026-08-14 · capture 2024-01-10 → 2026-08-21 reported positions only — not a portfolio

Voting is not disposition. Each reporting person's cover page splits its holding into VOTING power (sole / shared) and DISPOSITIVE power (sole / shared). Voting and dispositive totals are summed WITHIN a person only — never across persons, because a group's members report overlapping interests in the same shares and the filing's aggregate is not their sum. Where a person's voting total is below its reported aggregate, the difference is shares it reports beneficial ownership of with no voting power reported; it is shown as a gap, never as a second position.

Percent is as filed. Percent is the filing's own percent of class, as filed (0–100). It's the reporting group's figure — not summed across filers, not recomputed against shares outstanding, not rescaled. Share counts are as filed and never subtracted across filings (a split would make that meaningless); the only change we show is the change in the as-filed percent against the prior captured filing.

We never call an amendment “new”. A filing is 'first captured' when we hold nothing earlier for that company + filer. On an amendment that means the original predates our window, not that the position is new — so we never badge an amendment 'new,' even when the raw data says so.

Escalations. An escalation is a filer moving from a passive 13G to an active 13D on the same company — telling the SEC it may now seek to influence control. It's a lower bound: a 13G filed before our window began is invisible and never guessed. If the 13D leg is a 13D/A, an earlier 13D predates our window, so the crossing shown is the first one visible inside it, not necessarily the filer's first.

Parsed Schedule 13D/G XML (events.db schedule_13dg + schedule_13dg_persons). 13D = active intent; 13G filers report passively under Rule 13d-1(b) QII / (c) Passive / (d) Exempt and are never activists. Percents are the reporting group's own as-filed figures and are NOT additive across filers — two filers can report the same shares. Structured 13D/13G coverage starts December 2024 (SEC XML mandate).