RBRK · Insider Trading
Rubrik, Inc.
Every open-market purchase and sale reported by RBRK officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-07 | Arvind Nithrakashyap | Chief Technology Officer | MIXED | −10,319 | −$4.78M |
| 2026-10-06 | Yvonne Wassenaar | Director | Sell | −721 | −$85.80K |
| 2026-10-02 | John Wendell Thompson | Director | MIXED | −2,500 | −$1.56M |
| 2026-09-25 | Bipul Sinha | Chairman of the Board and CEO | MIXED | +500,000 | — |
| 2026-09-17 | Arvind Nithrakashyap | Chief Technology Officer | F | −10,436 | −$1.05M |
| 2026-09-17 | Kiran Kumar Choudary | Chief Financial Officer | MIXED | −19,995 | −$2.45M |
| 2026-09-10 | Arvind Nithrakashyap | Chief Technology Officer | MIXED | — | −$3.49M |
| 2026-09-03 | John Wendell Thompson | Director | MIXED | −2,500 | −$1.20M |
| 2026-09-03 | Yvonne Wassenaar | Director | MIXED | −208 | −$64.54K |
| 2026-08-28 | Rakefet Russak-Aminoach | Director | A | +10,304 | — |
| 2026-08-25 | Kiran Kumar Choudary | Chief Financial Officer | MIXED | −6,000 | −$983.19K |
| 2026-08-05 | Arvind Nithrakashyap | Chief Technology Officer | MIXED | −10,318 | −$3.05M |
| 2026-08-04 | Yvonne Wassenaar | Director | Sell | −721 | −$54.08K |
| 2026-08-04 | John Wendell Thompson | Director | MIXED | −2,500 | −$1.00M |
| 2026-07-16 | Kiran Kumar Choudary | Chief Financial Officer | MIXED | −16,000 | −$2.29M |
| 2026-07-14 | Ravi Mhatre | Director | MIXED | +52,581 | −$330.65K |
| 2026-07-08 | Arvind Nithrakashyap | Chief Technology Officer | MIXED | — | −$3.33M |
| 2026-07-01 | Yvonne Wassenaar | Director | Sell | −721 | −$58.81K |
| 2026-07-01 | John Wendell Thompson | Director | MIXED | −2,500 | −$1.12M |
| 2026-06-26 | Ravi Mhatre | Director | MIXED | +52,581 | −$284.46K |
| 2026-06-24 | Yvonne Wassenaar | Director | Sell | −676 | −$50.70K |
| 2026-06-17 | Arvind Nithrakashyap | Chief Technology Officer | F | −10,437 | −$728.40K |
| 2026-06-17 | Kiran Kumar Choudary | Chief Financial Officer | F | −13,995 | −$976.71K |
| 2026-06-05 | Ravi Mhatre | Director | A | +3,709 | — |
| 2026-06-05 | Mark D McLaughlin | Director | A | +3,709 | — |
| 2026-06-05 | Asheem Chandna | Director | A | +3,709 | — |
| 2026-06-03 | Richard Scott Herren | Director | A | +3,709 | — |
| 2026-06-03 | Arvind Nithrakashyap | Chief Technology Officer | MIXED | −127,454 | −$18.87M |
| 2026-06-03 | John Wendell Thompson | Director | MIXED | +1,209 | −$1.14M |
| 2026-06-03 | Yvonne Wassenaar | Director | MIXED | +3,709 | −$58.21K |
| 2026-06-01 | Yvonne Wassenaar | Director | MIXED | −675 | −$212.85K |
| 2026-05-04 | John Wendell Thompson | Director | MIXED | −2,500 | −$749.08K |
| 2026-04-16 | Arvind Nithrakashyap | Chief Technology Officer | A | +92,834 | — |
| 2026-04-16 | Kiran Kumar Choudary | Chief Financial Officer | A | +464,167 | — |
| 2026-04-08 | Kiran Kumar Choudary | Chief Financial Officer | MIXED | −15,000 | −$1.03M |
| 2026-04-02 | John Wendell Thompson | Director | MIXED | −2,500 | −$660.33K |
| 2026-04-01 | Mark D McLaughlin | Director | Buy | +10,638 | +$502.22K |
| 2026-03-26 | Kiran Kumar Choudary | Chief Financial Officer | MIXED | +89,575 | −$5.91M |
| 2026-03-26 | Arvind Nithrakashyap | Chief Technology Officer | MIXED | +11,658 | −$1.40M |
| 2026-03-03 | John Wendell Thompson | Director | MIXED | −2,500 | −$723.64K |
| 2026-02-19 | Kiran Kumar Choudary | Chief Financial Officer | MIXED | −15,000 | −$1.08M |
| 2026-02-03 | John Wendell Thompson | Director | MIXED | −2,500 | −$746.46K |
| 2026-02-03 | Brian K. McCarthy | Pres.,Global Sales & Field Ops | A | +442,022 | — |
| 2026-01-16 | Ravi Mhatre | Director | Sell | −5,307 | −$452.53K |
| 2026-01-16 | John Wendell Thompson | Director | MIXED | +26,547 | — |
| 2026-01-16 | Asheem Chandna | Director | A | +513 | — |
| 2026-01-16 | Richard Scott Herren | Director | A | +513 | — |
| 2026-01-16 | Mark D McLaughlin | Director | A | +146 | — |
| 2026-01-16 | Yvonne Wassenaar | Director | A | +146 | — |
| 2026-01-16 | Ravi Mhatre | Director | A | +220 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Greylock XIV GP LLC | 10%+ Owner | 6,714,671 | $808.31M |
| Lightspeed SPV I-B, LLC | 10%+ Owner | 3,330,649 | $400.94M |
| Lightspeed General Partner IX, L.P. | 10%+ Owner | 1,031,000 | $124.11M |
| Kiran Kumar Choudary | Chief Financial Officer | 978,473 | $117.79M |
| Brian K. McCarthy | Pres.,Global Sales & Field Ops | 772,794 | $93.03M |
| Bipul Sinha | Chairman of the Board and CEO | 611,652 | $73.63M |
| Barry Eggers | 10%+ Owner | 456,056 | $54.90M |
| Asheem Chandna | Director | 351,393 | $42.30M |
| Arvind Nithrakashyap | Chief Technology Officer | 283,852 | $34.17M |
| Greylock XIV Principals LLC | 10%+ Owner | 248,691 | $29.94M |
| Ravi Mhatre | Director | 125,351 | $15.09M |
| Greylock XIV Limited Partnership | 10%+ Owner | 124,346 | $14.97M |
| John Wendell Thompson | Director | 26,562 | $3.20M |
| Mark D McLaughlin | Director | 20,028 | $2.41M |
| Enrique T Salem | Director | 10,682 | $1.29M |
| Rakefet Russak-Aminoach | Director | 10,304 | $1.24M |
| Richard Scott Herren | Director | 7,461 | $898.16K |
| Yvonne Wassenaar | Director | 2,988 | $359.70K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the RBRK quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.