Comparable stake leader
Arvind Nithrakashyap
SEC ownership of Rubrik, Inc.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001943896.
Disclosed value leader
Bipul Sinha
Comparable rows
50/50
Latest evidence
15 Sep 2026
- Public ticker
- RBRK on NYSE
- Parsed ownership sources
-
3/4/5, 13D/G, and 13F
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
Arvind Nithrakashyap
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
Arvind Nithrakashyap
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
15 Sep 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001943896
- Issuer location
- Palo Alto, CA
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Rubrik, Inc. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Arvind Nithrakashyap
Disclosed value leader
Bipul Sinha
Comparable rows
50/50
Latest evidence
15 Sep 2026
3/4/5
13D/G
13F
Lead comparable stake: 12%
13D/G row: Arvind Nithrakashyap
Showing 1-8 of 50 holder rows.
Quick read
Arvind Nithrakashyap leads the comparable SEC ownership view at 12%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Arvind Nithrakashyap's linked filing trail.
Comparable ownership
Top 5
Arvind Nithrakashyap
12%
VANGUARD GROUP INC
9.2%
Bipul Sinha
8.9%
AQR CAPITAL MANAGEMENT LLC
6.2%
FMR LLC
5.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Arvind Nithrakashyap |
3/4/5
13D/G
Chief Technology Officer, Director
|
12%
from 13D/G
|
$1,097,594,551
10,511,107 shares
mixed-class rows
|
-$32,933,974 | 15 Sep 2026 |
| VANGUARD GROUP INC |
13D/G
The Vanguard Group
|
9.2%
|
$1,070,586,398
13,016,248 shares
|
+$20,277,175 | 30 Sep 2025 |
| Bipul Sinha |
13D/G
3/4/5
Chairman of the Board and CEO, Director, 10%+ Owner
|
8.9%
|
$1,309,499,697
13,791,466 shares
|
+$41,225,486 | 12 Sep 2025 |
| AQR CAPITAL MANAGEMENT LLC |
13D/G
13F
Company
|
6.2%
|
$839,650,699
9,948,468 shares
|
$0 | 30 Jun 2026 |
| FMR LLC |
13F
13D/G
Company
|
5.3%
from 13D/G
|
$738,746,263
9,202,121 shares
|
— | 30 Jun 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
5%
|
$685,919,138
8,127,004 shares
|
$0 | 30 Jun 2026 |
| NORGES BANK |
13F
13D/G
Company
|
4.9%
from 13D/G
|
$326,693,359
4,069,424 shares
|
— | 30 Jun 2026 |
| Greylock XIV Limited Partnership |
13D/G
Greylock XIV GP LLC
|
3.9%
|
$420,487,588
4,973,830 shares
|
-$420,487,504 | 30 Jun 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$72,940,828.
Buys
$502,220
Insiders: 1
Sells
$73,443,048
Insiders: 6
Net
-$72,940,828
Shares: -973,468
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 10,638
Shares: 984,106
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 209,301 | $0 | $18,400,737 | -$18,400,737 |
| 3-6 | 0 | 294,522 | $0 | $23,578,841 | -$23,578,841 |
| 6-9 | 10,638 | 264,773 | $502,220 | $14,245,499 | -$13,743,279 |
| 9-12 | 0 | 215,510 | $0 | $17,217,971 | -$17,217,971 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-19 of 19 reporting-owner rows connected to Rubrik, Inc.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
19
Largest Forms 3/4/5 holder
Lightspeed SPV I-B, LLC
Net 12M change
-$72,940,827
Latest report
01 Oct 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Lightspeed SPV I-B, LLC | 10%+ Owner | $2,024,120,118 | Mixed | 15 Jan 2025 | ||
| Lightspeed SPV I, LLC | 10%+ Owner | $1,607,948,803 | Mixed | 25 Mar 2025 | ||
| Barry Eggers | 10%+ Owner | $1,214,926,910 | Mixed | 26 Jun 2025 | ||
| Lightspeed Venture Partners IX, L.P. | 10%+ Owner | $1,214,926,910 | Mixed | 26 Jun 2025 | ||
| Ravi Mhatre | Director | $1,194,998,697 | -$9,385,459 | -0.78% | Mixed | 10 Jul 2026 |
| Arvind Nithrakashyap | Chief Technology Officer, Director | $1,097,594,551 | -$32,933,974 | -2.9% | Mixed | 15 Sep 2026 |
| Bipul Sinha | Chairman of the Board and CEO, Director, 10%+ Owner | $881,133,048 | Mixed | 24 Sep 2026 | ||
| Greylock XIV GP LLC | 10%+ Owner | $622,101,723 | Mixed | 28 Mar 2025 | ||
| Asheem Chandna | Director | $545,300,209 | Mixed | 03 Jun 2026 | ||
| Kiran Kumar Choudary | Chief Financial Officer | $120,944,327 | -$15,855,528 | -12% | Mixed | 15 Sep 2026 |
| Enrique T. Salem | Director | $87,838,679 | Mixed | 24 Jun 2025 | ||
| John Wendell Thompson | Director | $83,136,550 | -$11,196,989 | -12% | Mixed | 01 Oct 2026 |
| Brian K. McCarthy | Pres.,Global Sales & Field Ops | $74,853,285 | -$3,571,910 | -4.6% | Mixed | 31 Jan 2026 |
| Lightspeed Management Company, L.L.C. | 10%+ Owner | $72,099,739 | Mixed | 30 Jun 2025 | ||
| Mark D. McLaughlin | Director | $7,143,356 | +$502,220 | +7.6% | Mixed | 03 Jun 2026 |
| Yvonne Wassenaar | Director | $3,272,029 | -$499,187 | -13% | Mixed | 03 Sep 2026 |
| Rakefet Russak-Aminoach | Director | $827,205 | Median | 26 Aug 2026 | ||
| Richard Scott Herren | Director | $365,365 | Mixed | 03 Jun 2026 | ||
| Khosla Ventures VI, L.P. | 10%+ Owner | Mixed | 24 Apr 2024 |
Recent insider transactions for Rubrik, Inc.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| John Wendell Thompson | RBRK | Class A Common Stock | Sale | -56.8% | $1,272,630 | $115.69 | -11,000 | 8,362 | 01 Oct 2026 | Direct |
| John Wendell Thompson | RBRK | Class A Common Stock | Conversion of derivative security | 131.6% | 11,000 | 19,362 | 01 Oct 2026 | Direct | ||
| John Wendell Thompson | RBRK | Class A Common Stock | Sale | -33.3% | $289,193 | $115.68 | -2,500 | 5,000 | 01 Oct 2026 | By John and Sandra Thompson Trust |
| John Wendell Thompson | RBRK | Class B Common Stock | Conversion of derivative security | -18% | -11,000 | 50,001 | 01 Oct 2026 | Direct | ||
| John Wendell Thompson | RBRK | Class B Common Stock | Options Exercise | 22% | 11,000 | 61,001 | 01 Oct 2026 | Direct | ||
| John Wendell Thompson | RBRK | Stock Option (Right to Buy) | Options Exercise | -16.4% | -11,000 | 55,946 | 01 Oct 2026 | Direct | ||
| Bipul Sinha | RBRK | Class A Common Stock | Gift | -49.3% | -55,000 | 56,652 | 25 Sep 2026 | Direct | ||
| Bipul Sinha | RBRK | Prepaid Variable Forward Contract (obligation to sell) | Other | 500,000 | 500,000 | 25 Sep 2026 | By SPV | |||
| Bipul Sinha | RBRK | Class A Common Stock | Conversion of derivative security | 97.1% | 55,000 | 111,652 | 24 Sep 2026 | Direct | ||
| Bipul Sinha | RBRK | Class A Common Stock | Conversion of derivative security | 500,000 | 500,000 | 24 Sep 2026 | By SPV | |||
| Bipul Sinha | RBRK | Class B Common Stock | Conversion of derivative security | -4.94% | -555,000 | 10,679,839 | 24 Sep 2026 | Direct | ||
| Kiran Kumar Choudary | RBRK | Class A Common Stock | Sale | -0.62% | $643,922 | $107.32 | -6,000 | 958,078 | 17 Sep 2026 | Direct |
| Arvind Nithrakashyap | RBRK | Class A Common Stock | Tax liability | -3.56% | -10,436 | 282,857 | 15 Sep 2026 | Direct | ||
| Kiran Kumar Choudary | RBRK | Class A Common Stock | Tax liability | -1.43% | -13,995 | 964,078 | 15 Sep 2026 | Direct | ||
| Kiran Kumar Choudary | RBRK | Class A Common Stock | Sale | -0.41% | $404,186 | $101.05 | -4,000 | 978,073 | 15 Sep 2026 | Direct |
| Kiran Kumar Choudary | RBRK | Class A Common Stock | Conversion of derivative security | 0.41% | 4,000 | 982,073 | 15 Sep 2026 | Direct | ||
| Kiran Kumar Choudary | RBRK | Class B Common Stock | Conversion of derivative security | -100% | -4,000 | 0 | 15 Sep 2026 | Direct | ||
| Kiran Kumar Choudary | RBRK | Class B Common Stock | Options Exercise | 4,000 | 4,000 | 15 Sep 2026 | Direct | |||
| Kiran Kumar Choudary | RBRK | Stock Option (Right to Buy) | Options Exercise | -25.9% | -4,000 | 11,450 | 15 Sep 2026 | Direct | ||
| Arvind Nithrakashyap | RBRK | Class A Common Stock | Sale | -4.19% | $1,159,040 | $90.41 | -12,820 | 293,293 | 10 Sep 2026 | Direct |
| Arvind Nithrakashyap | RBRK | Class A Common Stock | Conversion of derivative security | 4.37% | 12,820 | 306,113 | 10 Sep 2026 | Direct | ||
| Arvind Nithrakashyap | RBRK | Class B Common Stock | Conversion of derivative security | -0.13% | -12,820 | 10,028,250 | 10 Sep 2026 | Direct | ||
| Arvind Nithrakashyap | RBRK | Class A Common Stock | Sale | -4.19% | $1,159,747 | $90.46 | -12,820 | 293,293 | 09 Sep 2026 | Direct |
| Arvind Nithrakashyap | RBRK | Class A Common Stock | Conversion of derivative security | 4.37% | 12,820 | 306,113 | 09 Sep 2026 | Direct | ||
| Arvind Nithrakashyap | RBRK | Class B Common Stock | Conversion of derivative security | -0.13% | -12,820 | 10,041,070 | 09 Sep 2026 | Direct | ||
| Arvind Nithrakashyap | RBRK | Class A Common Stock | Sale | -4.19% | $1,170,832 | $91.33 | -12,820 | 293,293 | 08 Sep 2026 | Direct |
| Arvind Nithrakashyap | RBRK | Class A Common Stock | Conversion of derivative security | 4.37% | 12,820 | 306,113 | 08 Sep 2026 | Direct | ||
| Arvind Nithrakashyap | RBRK | Class B Common Stock | Conversion of derivative security | -0.13% | -12,820 | 10,053,890 | 08 Sep 2026 | Direct | ||
| Yvonne Wassenaar | RBRK | Class A Common Stock | Sale | -16.3% | $64,544 | $89.52 | -721 | 3,709 | 03 Sep 2026 | Direct |
| Yvonne Wassenaar | RBRK | Class A Common Stock | Conversion of derivative security | 13.1% | 513 | 4,430 | 03 Sep 2026 | Direct | ||
| Yvonne Wassenaar | RBRK | Class B Common Stock | Conversion of derivative security | -1.55% | -513 | 32,603 | 03 Sep 2026 | Direct | ||
| John Wendell Thompson | RBRK | Class A Common Stock | Sale | -56.8% | $979,348 | $89.03 | -11,000 | 8,362 | 01 Sep 2026 | Direct |
| John Wendell Thompson | RBRK | Class A Common Stock | Conversion of derivative security | 131.6% | 11,000 | 19,362 | 01 Sep 2026 | Direct | ||
| John Wendell Thompson | RBRK | Class A Common Stock | Sale | -25% | $222,598 | $89.04 | -2,500 | 7,500 | 01 Sep 2026 | By John and Sandra Thompson Trust |
| John Wendell Thompson | RBRK | Class B Common Stock | Conversion of derivative security | -18% | -11,000 | 50,001 | 01 Sep 2026 | Direct | ||
| John Wendell Thompson | RBRK | Class B Common Stock | Options Exercise | 22% | 11,000 | 61,001 | 01 Sep 2026 | Direct | ||
| John Wendell Thompson | RBRK | Stock Option (Right to Buy) | Options Exercise | -14.1% | -11,000 | 66,946 | 01 Sep 2026 | Direct | ||
| Rakefet Russak-Aminoach | RBRK | Class A Common Stock | Award | 10,304 | 10,304 | 26 Aug 2026 | Direct | |||
| Kiran Kumar Choudary | RBRK | Class A Common Stock | Sale | -1.01% | $983,188 | $98.32 | -10,000 | 978,073 | 24 Aug 2026 | Direct |
| Kiran Kumar Choudary | RBRK | Class A Common Stock | Conversion of derivative security | 0.41% | 4,000 | 988,073 | 24 Aug 2026 | Direct | ||
| Kiran Kumar Choudary | RBRK | Class B Common Stock | Conversion of derivative security | -100% | -4,000 | 0 | 24 Aug 2026 | Direct | ||
| Kiran Kumar Choudary | RBRK | Class B Common Stock | Options Exercise | 4,000 | 4,000 | 24 Aug 2026 | Direct | |||
| Kiran Kumar Choudary | RBRK | Stock Option (Right to Buy) | Options Exercise | -20.6% | -4,000 | 15,450 | 24 Aug 2026 | Direct | ||
| Arvind Nithrakashyap | RBRK | Class A Common Stock | Sale | -4.19% | $1,073,131 | $83.71 | -12,820 | 293,293 | 05 Aug 2026 | Direct |
| Arvind Nithrakashyap | RBRK | Class A Common Stock | Conversion of derivative security | 4.37% | 12,820 | 306,113 | 05 Aug 2026 | Direct | ||
| Arvind Nithrakashyap | RBRK | Class B Common Stock | Conversion of derivative security | -0.13% | -12,820 | 10,066,710 | 05 Aug 2026 | Direct | ||
| Arvind Nithrakashyap | RBRK | Class A Common Stock | Sale | -4.19% | $1,023,211 | $79.81 | -12,820 | 293,293 | 04 Aug 2026 | Direct |
| Arvind Nithrakashyap | RBRK | Class A Common Stock | Conversion of derivative security | 4.37% | 12,820 | 306,113 | 04 Aug 2026 | Direct | ||
| Arvind Nithrakashyap | RBRK | Class B Common Stock | Conversion of derivative security | -0.13% | -12,820 | 10,079,530 | 04 Aug 2026 | Direct | ||
| Arvind Nithrakashyap | RBRK | Class A Common Stock | Sale | -4.19% | $949,233 | $74.04 | -12,820 | 293,293 | 03 Aug 2026 | Direct |
* marks a reported price that did not pass the local price check.