Rubrik, Inc. (RBRK) Insider Trading
Over the last 3 months, RBRK insiders made 0 open-market buys and 82 sales, a net sale of -$32.6M (SEC Form 4). Over the last 6 months, 418 institutions increased and 240 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
82
Net (3m)
-$32.6M
Insider trades by month Buys Sells
Mar
Apr
May
Jun
Jul
Aug
Context3-month price +8%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 28, 2026 | Russak-Aminoach Rakefetdirector | Grant | 10,304 | — |
| Aug 25, 2026 | Choudary Kiran Kumarofficer: Chief Financial Officer | Sell | 300 | $99.93 |
| Aug 25, 2026 | Choudary Kiran Kumarofficer: Chief Financial Officer | Sell | 4,400 | $97.81 |
| Aug 25, 2026 | Choudary Kiran Kumarofficer: Chief Financial Officer | Sell | 5,300 | $98.65 |
| Aug 25, 2026 | Choudary Kiran Kumarofficer: Chief Financial Officer | Option | 4,000 | $7.99 |
| Aug 5, 2026 | Nithrakashyap Arvinddirector, officer: Chief Technology Officer | Sell | 3,767 | $79.81 |
| Aug 5, 2026 | Nithrakashyap Arvinddirector, officer: Chief Technology Officer | Sell | 1,342 | $82.08 |
| Aug 5, 2026 | Nithrakashyap Arvinddirector, officer: Chief Technology Officer | Sell | 212 | $76.77 |
| Aug 5, 2026 | Nithrakashyap Arvinddirector, officer: Chief Technology Officer | Sell | 4,557 | $80.94 |
| Aug 5, 2026 | Nithrakashyap Arvinddirector, officer: Chief Technology Officer | Sell | 2,981 | $79.11 |
| Aug 5, 2026 | Nithrakashyap Arvinddirector, officer: Chief Technology Officer | Sell | 2,780 | $83.17 |
| Aug 5, 2026 | Nithrakashyap Arvinddirector, officer: Chief Technology Officer | Sell | 1,303 | $77.99 |
| Aug 5, 2026 | Nithrakashyap Arvinddirector, officer: Chief Technology Officer | Sell | 521 | $84.61 |
| Aug 5, 2026 | Nithrakashyap Arvinddirector, officer: Chief Technology Officer | Sell | 7,642 | $73.72 |
| Aug 5, 2026 | Nithrakashyap Arvinddirector, officer: Chief Technology Officer | Sell | 8,177 | $84.10 |
| Aug 5, 2026 | Nithrakashyap Arvinddirector, officer: Chief Technology Officer | Sell | 5,178 | $74.52 |
| Aug 4, 2026 | THOMPSON JOHN WENDELLdirector | Sell | 5,740 | $73.73 |
| Aug 4, 2026 | Wassenaar Yvonnedirector | Sell | 721 | $75.00 |
| Aug 4, 2026 | THOMPSON JOHN WENDELLdirector | Sell | 1,500 | $73.79 |
| Aug 4, 2026 | THOMPSON JOHN WENDELLdirector | Option | 11,000 | $4.38 |
| Aug 4, 2026 | THOMPSON JOHN WENDELLdirector | Sell | 1,000 | $74.59 |
| Aug 4, 2026 | THOMPSON JOHN WENDELLdirector | Sell | 5,260 | $74.51 |
| Jul 16, 2026 | Choudary Kiran Kumarofficer: Chief Financial Officer | Sell | 1,200 | $82.27 |
| Jul 16, 2026 | Choudary Kiran Kumarofficer: Chief Financial Officer | Sell | 1,100 | $88.64 |
| Jul 16, 2026 | Choudary Kiran Kumarofficer: Chief Financial Officer | Option | 12,000 | $7.99 |
| Jul 16, 2026 | Choudary Kiran Kumarofficer: Chief Financial Officer | Sell | 400 | $85.15 |
| Jul 16, 2026 | Choudary Kiran Kumarofficer: Chief Financial Officer | Sell | 1,800 | $83.37 |
| Jul 16, 2026 | Choudary Kiran Kumarofficer: Chief Financial Officer | Sell | 15,600 | $80.15 |
| Jul 16, 2026 | Choudary Kiran Kumarofficer: Chief Financial Officer | Sell | 2,100 | $86.58 |
| Jul 16, 2026 | Choudary Kiran Kumarofficer: Chief Financial Officer | Sell | 4,800 | $80.94 |
Source: RBRK SEC Form 4 filings, latest Aug 28, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their RBRK positions over the last 6 months (SEC Form 13F).
Increased
418
New positions
301
Reduced
240
Sold out
70
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 10.0M | Aug 7, 2026 |
| AQR CAPITAL MANAGEMENT LLC | Increased | 9.9M | Aug 14, 2026 |
| FMR LLC | Increased | 9.2M | Aug 13, 2026 |
| BLACKROCK, INC. | Reduced | 8.8M | May 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 8.3M | Aug 13, 2026 |
| FMR LLC | Increased | 8.3M | May 15, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 8.0M | May 8, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 6.9M | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 6.6M | May 15, 2026 |
| FIRST TRUST ADVISORS LP | Increased | 6.0M | Aug 11, 2026 |
| FIRST TRUST ADVISORS LP | Reduced | 4.9M | May 13, 2026 |
| NORGES BANK | New Position | 4.1M | Aug 12, 2026 |
| VOYA INVESTMENT MANAGEMENT LLC | Increased | 4.0M | Aug 12, 2026 |
| VOYA INVESTMENT MANAGEMENT LLC | Reduced | 3.7M | May 12, 2026 |
| POINTSTATE CAPITAL LP | Increased | 3.6M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.