RBRK: Rubrik, Inc. insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 21 sales totaling $6.43M in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-10-07 | Nithrakashyap Arvind | Officer | $182K | yes |
| 2026-10-07 | Nithrakashyap Arvind | Officer | $1.03M | yes |
| 2026-10-07 | Nithrakashyap Arvind | Officer | $381K | yes |
| 2026-10-07 | Nithrakashyap Arvind | Officer | $2K | yes |
| 2026-10-06 | Nithrakashyap Arvind | Officer | $73K | yes |
| 2026-10-06 | Nithrakashyap Arvind | Officer | $1.40M | yes |
| 2026-10-06 | Nithrakashyap Arvind | Officer | $136K | yes |
| 2026-10-06 | Nithrakashyap Arvind | Officer | $9K | yes |
| 2026-10-05 | Nithrakashyap Arvind | Officer | $59K | yes |
| 2026-10-05 | Nithrakashyap Arvind | Officer | $13K | yes |
| 2026-10-05 | Nithrakashyap Arvind | Officer | $109K | yes |
| 2026-10-05 | Nithrakashyap Arvind | Officer | $342K | yes |
| 2026-10-05 | Nithrakashyap Arvind | Officer | $689K | yes |
| 2026-10-05 | Nithrakashyap Arvind | Officer | $361K | yes |
| 2026-10-05 | Wassenaar Yvonne | Director | $86K | yes |
| 2026-10-01 | Thompson John Wendell | Director | $34K | yes |
| 2026-10-01 | Thompson John Wendell | Director | $197K | yes |
| 2026-10-01 | Thompson John Wendell | Director | $58K | yes |
| 2026-10-01 | Thompson John Wendell | Director | $103K | yes |
| 2026-10-01 | Thompson John Wendell | Director | $891K | yes |
| 2026-10-01 | Thompson John Wendell | Director | $279K | yes |
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-08-14 | Fell below 5% | Lightspeed Venture Partners IX, L.P. | 2.00% | SEC | |
| 2026-08-13 | New 13G stake | AQR Capital Management, LLC | 6.18% | SEC |
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