RBRK's three largest insider shareholders as of March 23, 2026 are Brian K. Mccarthy (Pres.,Global Sales Field Ops, 772.79K shares), Kiran Kumar Choudary (Chief Financial Officer, 474.96K shares), Arvind Nithrakashyap (Chief Technology Officer, 337.01K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Xiv Gp Llc Greylock | - | 0 | 2,486,916 | 01 Apr, 2025 |
| Asheem Chandna | - | 1,094,154 | 0 | 16 Jan, 2026 |
| Barry Eggers | - | 59,182 | 820,431 | 30 Jun, 2025 |
| Venture Partners Ix, L.P. Lightspeed | - | 59,182 | 820,431 | 30 Jun, 2025 |
| Brian K. Mccarthy | Pres.,Global Sales Field Ops | 772,794 | 0 | 03 Feb, 2026 |
| Kiran Kumar Choudary | Chief Financial Officer | 564,901 | 0 | 26 Mar, 2026 |
| Ravi Mhatre | - | 0 | 526,648 | 15 Dec, 2025 |
| Spv I, Llc Lightspeed | - | 21,221 | 491,770 | 27 Mar, 2025 |
| Venture Partners Ix, L.P. Lightspeed | - | 21,221 | 491,770 | 27 Mar, 2025 |
| Asheem Chandna | - | 0 | 384,022 | 22 Jul, 2025 |
| Arvind Nithrakashyap | Chief Technology Officer | 348,668 | 0 | 26 Mar, 2026 |
| Asheem Chandna | - | 0 | 124,346 | 01 Apr, 2025 |
| Ravi Mhatre | - | 97,894 | 0 | 16 Jan, 2026 |
| Bipul Sinha | Chairman Of The Board And Ceo | 56,652 | 0 | 12 Sep, 2025 |
| Asheem Chandna | - | 0 | 55,780 | 15 Sep, 2025 |
| John Wendell Thompson | - | 4,653 | 20,000 | 02 Apr, 2026 |
| Mark D Mclaughlin | - | 13,639 | 0 | 01 Apr, 2026 |
| Richard Scott Herren | - | 3,752 | 0 | 16 Jan, 2026 |
| Yvonne Wassenaar | - | 3,001 | 0 | 16 Jan, 2026 |
| Ravi Mhatre | - | 0 | 649 | 27 Mar, 2025 |
| Enrique T Salem | - | 76 | 0 | 16 Jan, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 01 Apr, 2026 | John Wendell Thompson | Class A Common Stock | D | 2,400 | $48.93 | 20,100 | I | S |
| 01 Apr, 2026 | John Wendell Thompson | Class A Common Stock | D | 100 | $49.60 | 20,000 | I | S |
| 01 Apr, 2026 | John Wendell Thompson | Class A Common Stock | A | 11,000 | $0.00 | 15,653 | D | C |
| 01 Apr, 2026 | John Wendell Thompson | Class A Common Stock | D | 5,354 | $48.57 | 10,299 | D | S |
| 01 Apr, 2026 | John Wendell Thompson | Class A Common Stock | D | 5,646 | $49.22 | 4,653 | D | S |
| 01 Apr, 2026 | John Wendell Thompson | Stock Option (Right to Buy) | D | 11,000 | $0.00 | 121,946 | D | M |
| 01 Apr, 2026 | John Wendell Thompson | Class B Common Stock | A | 11,000 | - | 61,001 | D | M |
| 01 Apr, 2026 | John Wendell Thompson | Class B Common Stock | D | 11,000 | - | 50,001 | D | C |
| 30 Mar, 2026 | Mark D Mclaughlin | Class A Common Stock | A | 10,638 | $47.21 | 13,639 | D | P |
| 24 Mar, 2026 | Arvind Nithrakashyap | Class A Common Stock | A | 40,625 | $0.00 | 377,635 | D | C |
| 24 Mar, 2026 | Kiran Kumar Choudary | Class A Common Stock | A | 212,188 | $0.00 | 687,514 | D | C |
| 24 Mar, 2026 | Kiran Kumar Choudary | Class A Common Stock | D | 122,613 | $48.20 | 564,901 | D | S |
| 24 Mar, 2026 | Arvind Nithrakashyap | Class A Common Stock | D | 28,967 | $48.20 | 348,668 | D | S |
| 24 Mar, 2026 | Arvind Nithrakashyap | Restricted Stock Unit | D | 40,625 | $0.00 | 0 | D | M |
| 24 Mar, 2026 | Kiran Kumar Choudary | Restricted Stock Units | D | 7,188 | $0.00 | 0 | D | M |
| 24 Mar, 2026 | Kiran Kumar Choudary | Restricted Stock Units | D | 150,000 | $0.00 | 200,000 | D | M |
| 24 Mar, 2026 | Arvind Nithrakashyap | Class B Common Stock | A | 40,625 | $0.00 | 10,271,570 | D | M |
| 24 Mar, 2026 | Arvind Nithrakashyap | Class B Common Stock | D | 40,625 | $0.00 | 10,230,945 | D | C |
| 24 Mar, 2026 | Kiran Kumar Choudary | Restricted Stock Units | D | 55,000 | $0.00 | 192,500 | D | M |
| 24 Mar, 2026 | Kiran Kumar Choudary | Class B Common Stock | A | 212,188 | - | 212,188 | D | M |