RBRK Rubrik Inc.
Information Technology, filed as RUBRIK INC. (CL A), Equity As of 2026 Q2 among managers we track Quote on Google Finance, opens in a new tab
Bought by 3 managers in 2026 Q2, sold by 2
In 2026 Q2, 1 manager opened a position, 2 added, 1 trimmed, and 1 sold out.
Who owns this now
Largest portfolio weights among holders, up to 8.3% (Ram Parameswaran, Octahedron Capital Management). Not free-float ownership.
Who owns RBRK
Sorted by value, long equity only, as of 2026 Q2. Exits show their last held size.
| History | |||||
|---|---|---|---|---|---|
| Ron Baron, Bamco Inc. (Baron Capital) | Add +301.9% | 1,115,395 | $90M | History | |
| Cathie Wood, Ark Investment Management | Reduce −7.5% | 365,426 | $29M | History | |
| Ram Parameswaran, Octahedron Capital Management | Add +82.9% | 203,000 | $16M | History | |
| Polen Capital Management | New <0.01% | 6,201 | $498K | History | |
| Gavin Baker, Atreides Management exited 2026 Q2 Last 2026 Q1 | Exit −0.55% | 566,454 | $28M | History |
Insider trades
Open-market buys and sales by RBRK's executives, directors and 10% owners in the last 12 months, from their Form 4s
- $502K bought by 1 insider
- $1.1M sold by 1 insider outside a trading plan
- $57.2M sold by 5 insiders under 10b5-1 plans
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Arvind Nithrakashyap Chief Technology OfficerPlanned sale$4.8M 38,460 shares at $124.32 12% of stakeTraded Oct 5–7 Filed Oct 7
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Yvonne Wassenaar DirectorPlanned sale$86K 721 shares at $119.00 19% of stakeTraded Oct 5 Filed Oct 6
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John Wendell Thompson DirectorPlanned sale$1.6M 13,500 shares at $115.69Traded Oct 1 Filed Oct 2
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Kiran Kumar Choudary CFOPlanned sale$1M 10,000 shares at $104.81 1% of stakeTraded Sep 15–17 Filed Sep 17
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Arvind Nithrakashyap Chief Technology OfficerPlanned sale$3.5M 38,460 shares at $90.73 12% of stakeTraded Sep 8–10 Filed Sep 10
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Yvonne Wassenaar DirectorPlanned sale$65K 721 shares at $89.52 16% of stakeTraded Sep 3 Filed Sep 3
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John Wendell Thompson DirectorPlanned sale$1.2M 13,500 shares at $89.03Traded Sep 1 Filed Sep 3
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Kiran Kumar Choudary CFOPlanned sale$983K 10,000 shares at $98.32 1% of stakeTraded Aug 24 Filed Aug 25
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Arvind Nithrakashyap Chief Technology OfficerPlanned sale$3M 38,460 shares at $79.19 12% of stakeTraded Aug 3–5 Filed Aug 5
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Yvonne Wassenaar DirectorPlanned sale$54K 721 shares at $75.00 16% of stakeTraded Aug 3 Filed Aug 4
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John Wendell Thompson DirectorPlanned sale$1M 13,500 shares at $74.10Traded Aug 3 Filed Aug 4
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Kiran Kumar Choudary CFOPlanned sale$2.3M 28,000 shares at $81.73 2.8% of stakeTraded Jul 15 Filed Jul 16
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Ravi Mhatre DirectorSale$331K 3,979 shares at $83.10 100% of stakeTraded Jul 13 Filed Jul 14
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Arvind Nithrakashyap Chief Technology OfficerPlanned sale$3.3M 38,460 shares at $86.65 11% of stakeTraded Jul 6–8 Filed Jul 8
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Yvonne Wassenaar DirectorPlanned sale$59K 721 shares at $81.57 14% of stakeTraded Jul 1 Filed Jul 1
Also filed in the last 12 months, not counted as buying or selling: 67 conversions, 45 other transactions, 16 stock grants, 7 sales to cover taxes, 4 share withholdings for taxes, and 2 gifts.
SEC filings
Recent issuer filings from EDGAR, 9 shown.
Financials
US-GAAP annual figures by fiscal year, as tagged in Form 10-K. Each value links to its SEC filing.
Income statement
Balance sheet
Ownership over time
13Fs that reported it each quarter. Click a bar for that quarter’s holders.