🕵️ Rubrik, Inc. ($RBRK)
SEC insider & ownership activity, last 12 months · CIK 1943896 · every row links its SEC filing
Over the last 12 months insiders sold $117.4M against $502K of open-market buying. Bipul Sinha sold $46.6M in discretionary trades (Sep). Bipul Sinha trimmed 9.9% → 8.9%. No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $502K (1 lots) · 7 sellers, $117.4M (178 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Bipul Sinha | 0 | – | 1 | $46.6M | Sep 12, 2025 |
| Nithrakashyap Arvind | 0 | – | 38 | $29.4M | Jul 8, 2026 |
| Choudary Kiran Kumar | 0 | – | 44 | $15.8M | Jul 15, 2026 |
| Thompson John Wendell | 0 | – | 61 | $9.8M | Jul 1, 2026 |
| Mhatre Ravi | 0 | – | 6 | $9.4M | Jul 13, 2026 |
| Brian K. McCarthy | 0 | – | 24 | $6.1M | Jan 12, 2026 |
| Mark D. McLaughlin | 1 | $502K | 0 | – | Mar 30, 2026 |
| Wassenaar Yvonne | 0 | – | 4 | $381K | Jul 1, 2026 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Arvind Nithrakashyap | 11.5% | 13G | Feb 14, 2025 | filing ↗ | |
| Barry Eggers | 9.1% | 13G | Aug 14, 2025 | filing ↗ | |
| Ravi Mhatre | 9.1% | 13G | Aug 14, 2025 | filing ↗ | |
| Peter Nieh | 9.1% | 13G | Aug 14, 2025 | filing ↗ | |
| Bipul Sinha | 8.9% | 13D | Sep 12, 2025 | filing ↗ | |
| Blackrock, Inc. | 5.3% | 13G | Apr 27, 2026 | filing ↗ | |
| FMR LLC | 5.3% | 13G | May 6, 2026 | filing ↗ | |
| Abigail P. Johnson | 5.3% | 13G | May 6, 2026 | filing ↗ | |
| Vanguard Portfolio Management | 5.1% | 13G | Apr 29, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Kiran Choudary | $4.2M | Jul 15, 2026 | filing ↗ |
| Lightspeed General Partner IX, LP | $636K | Jul 13, 2026 | filing ↗ |
| Lightspeed Management Company, L.L.C. | $333K | Jul 13, 2026 | filing ↗ |
| Lightspeed General Partner Select II, L.P. | $13K | Jul 13, 2026 | filing ↗ |
| Lightspeed General Partner IX, L.P. | $538K | Jun 26, 2026 | filing ↗ |
| Lightspeed Management Company, LLC | $282K | Jun 26, 2026 | filing ↗ |
| Lightspeed General Partner Select II, LP | $11K | Jun 26, 2026 | filing ↗ |
| Arvind Nithrakashyap | $24.9M | Jun 1, 2026 | filing ↗ |
| Yvonne Wassenaar | $399K | May 29, 2026 | filing ↗ |
| JOHN and Sandra Thompson Trust | $399K | May 1, 2026 | filing ↗ |
| John Thompson | $1.8M | May 1, 2026 | filing ↗ |
| Kiran Kumar Choudary | $6.0M | Mar 24, 2026 | filing ↗ |
| Arvind Nithrakashyap | $1.4M | Mar 24, 2026 | filing ↗ |
| Kiran Choudary | $4.1M | Jan 16, 2026 | filing ↗ |
| Arvind Nithrakashyap | $2.6M | Jan 14, 2026 | filing ↗ |
| JOHN and Sandra Thompson Trust | $755K | Jan 5, 2026 | filing ↗ |
| John Thompson | $3.3M | Jan 5, 2026 | filing ↗ |
| Kiran Kumar Choudary | $547K | Dec 22, 2025 | filing ↗ |
| Nithrakashyap Arvind | $2.7M | Dec 16, 2025 | filing ↗ |
| Choudary Kiran Kumar | $578K | Dec 16, 2025 | filing ↗ |
| Brian K. McCarthy | $383K | Dec 16, 2025 | filing ↗ |
| Lightspeed General Partner Select II, LP | $18K | Dec 12, 2025 | filing ↗ |
| Lightspeed Venture Partners X, LP | $8.9M | Dec 12, 2025 | filing ↗ |
| Lightspeed General Partner IX, LP | $882K | Dec 12, 2025 | filing ↗ |
| 001-42028 | $462K | Dec 12, 2025 | filing ↗ |
| Eggers Investments LP - Fund 2 | $3.5M | Dec 8, 2025 | filing ↗ |
| JOHN and Sandra Thompson Trust | $1.4M | Nov 3, 2025 | filing ↗ |
| Brian McCarthy | $3.3M | Oct 13, 2025 | filing ↗ |
| Kiran Kumar Choudary | $1.6M | Sep 17, 2025 | filing ↗ |
| Kiran Kumar Choudary | $514K | Sep 16, 2025 | filing ↗ |
| Brian K. McCarthy | $364K | Sep 16, 2025 | filing ↗ |
| Arvind Nithrakashyap | $3.1M | Sep 16, 2025 | filing ↗ |
| Greylock Management CORPORATIONC/O Donald A Sullivan &ADAM J Amero | $2.5M | Sep 12, 2025 | filing ↗ |
| Bipul Sinha | $48.0M | Sep 11, 2025 | filing ↗ |
| JOHN and Sandra Thompson Trust | $2.6M | Aug 1, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Jun 4, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jun 4, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 3, 2026 | filing ↗ |
| Earnings (2.02) | Mar 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 12, 2026 | filing ↗ |
| Earnings (2.02) | Feb 2, 2026 | filing ↗ |
| Officer/director changes (5.02) | Feb 2, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 2, 2026 | filing ↗ |
| Earnings (2.02) | Dec 4, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 4, 2025 | filing ↗ |
| Earnings (2.02) | Sep 9, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 9, 2025 | filing ↗ |