Arvind Nithrakashyap is CTO at Rubrik, Inc. (RBRK). They have made 6 open-market trades across 1 company since 2025, most recently 2026-10-07.
CIK 0002019143
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 6 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| RBRK | 272,538 | $30.6M |
Shares reported on the most recent Form 4, priced at the 2026-10-07 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| RBRK | SELL · 10b5-1 | 2026-10-05 | 2026-10-07 | $124.32 | $4.8M | — | — | — |
| RBRK | SELL · 10b5-1 | 2026-09-08 | 2026-09-10 | $90.73 | $3.5M | +25.3% | +34.4% | — |
| RBRK | SELL · 10b5-1 | 2026-08-03 | 2026-08-05 | $79.19 | $3.0M | +24.3% | +15.5% | — |
| RBRK | SELL · 10b5-1 | 2026-07-06 | 2026-07-08 | $86.65 | $3.3M | -5.2% | +9.1% | +52.6% |
| RBRK | SELL · 10b5-1 | 2026-06-01 | 2026-06-03 | $83.85 | $18.9M | -9.3% | +13.5% | +14.8% |
| RBRK | SELL | 2026-03-24 | 2026-03-26 | $48.20 | $2.8M | +10.4% | +13.9% | +59.4% |
| RBRK | SELL | 2026-01-14 | 2026-01-16 | $70.34 | $400K | -11.9% | -18.7% | -21.1% |
| RBRK | SELL | 2025-12-17 | 2025-12-18 | $76.19 | $4.8M | -0.4% | -15.5% | -32.2% |
| RBRK | SELL | 2025-09-16 | 2025-09-18 | $74.21 | $6.0M | +4.8% | +0.4% | -6.8% |
| RBRK | SELL | 2025-06-17 | 2025-06-20 | $88.56 | $7.6M | -0.5% | +0.6% | -9.3% |
| RBRK | SELL · 10b5-1 | 2025-06-03 | 2025-06-05 | $99.02 | $19.3M | -13.3% | -12.6% | -14.7% |
| RBRK | SELL · 10b5-1 | 2025-05-05 | 2025-05-07 | $74.46 | $14.5M | +12.6% | +27.2% | +13.7% |
| RBRK | SELL · 10b5-1 | 2025-04-07 | 2025-04-09 | $54.46 | $10.4M | +3.2% | +28.2% | +44.9% |
| RBRK | SELL · 10b5-1 | 2025-03-03 | 2025-03-05 | $61.92 | $11.6M | +16.7% | -14.7% | +61.5% |
| RBRK | SELL · 10b5-1 | 2025-02-03 | 2025-02-05 | $72.87 | $14.2M | +2.7% | -24.6% | -2.4% |
| RBRK | SELL | 2025-01-14 | 2025-01-16 | $64.89 | $29.5M | +6.5% | +12.2% | -10.5% |
| RBRK | SELL · 10b5-1 | 2025-01-06 | 2025-01-08 | $65.52 | $12.7M | +14.6% | +19.7% | -15.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.