Form 4 for RBRK Rubrik, Inc.
Accepted 2026-08-05 19:01:38 ET · period of report 2026-08-03 · accession 0002019143-26-000017 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMT | 2026-08-05 19:01 | 2026-08-03+ | RBRK | Nithrakashyap Arvind | CTO, Dir | C - Cnv Deriv | $0.00 | +28.1K | 306.1K | +10% | $0 |
| DMT | 2026-08-05 19:01 | 2026-08-03+ | RBRK | Nithrakashyap Arvind | CTO, Dir | S - Sale | $79.19 | -38.5K | 293.3K | -12% | -$3.05M |
| DMT | 2026-08-05 19:01 | 2026-08-03+ | RBRK | Nithrakashyap Arvind | CTO, Dir | C - Cnv Deriv | $0.00 | -28.1K | 10.07M | -0.3% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Class A Common Stock | 2026-08-03 | C | A | 2,502 | $0.00 | 306,113 | D | — | — | |
| 2 | Common | Class A Common Stock | 2026-08-03 | S | D | 7,642 | $73.72 | 298,471 | D | — | — | (F1) This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025. (F2) The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $73.1625 to $74.145 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote. |
| 3 | Common | Class A Common Stock | 2026-08-03 | S | D | 5,178 | $74.52 | 293,293 | D | — | — | (F1) This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025. (F3) The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $74.165 to $74.985 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote. |
| 4 | Common | Class A Common Stock | 2026-08-04 | C | A | 12,820 | $0.00 | 306,113 | D | — | — | |
| 5 | Common | Class A Common Stock | 2026-08-04 | S | D | 212 | $76.77 | 305,901 | D | — | — | (F1) This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025. (F4) The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $76.47 to $77.32 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote. |
| 6 | Common | Class A Common Stock | 2026-08-04 | S | D | 1,303 | $77.99 | 304,598 | D | — | — | (F1) This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025. (F5) The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $77.50 to $78.40 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote. |
| 7 | Common | Class A Common Stock | 2026-08-04 | S | D | 2,981 | $79.11 | 301,617 | D | — | — | (F1) This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025. (F6) The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $78.47 to $79.455 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote. |
| 8 | Common | Class A Common Stock | 2026-08-04 | S | D | 3,767 | $79.81 | 297,850 | D | — | — | (F1) This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025. (F7) The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.47 to $80.455 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote. |
| 9 | Common | Class A Common Stock | 2026-08-04 | S | D | 4,557 | $80.94 | 293,293 | D | — | — | (F1) This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025. (F8) The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $80.475 to $81.34 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote. |
| 10 | Common | Class A Common Stock | 2026-08-05 | C | A | 12,820 | $0.00 | 306,113 | D | — | — | |
| 11 | Common | Class A Common Stock | 2026-08-05 | S | D | 1,342 | $82.08 | 304,771 | D | — | — | (F1) This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025. (F9) The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.535 to $82.48 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote. |
| 12 | Common | Class A Common Stock | 2026-08-05 | S | D | 2,780 | $83.17 | 301,991 | D | — | — | (F1) This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025. (F10) The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.5375 to $83.525 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote. |
| 13 | Common | Class A Common Stock | 2026-08-05 | S | D | 8,177 | $84.10 | 293,814 | D | — | — | (F1) This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025. (F11) The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $83.55 to $84.51 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote. |
| 14 | Common | Class A Common Stock | 2026-08-05 | S | D | 521 | $84.61 | 293,293 | D | — | — | (F1) This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted October 15, 2025. (F12) The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.535 to $84.665 per share, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separated price within the range set forth in this footnote. |
| 15 | Derivative | Class B Common Stock | 2026-08-03 | C | D | 2,502 | $0.00 | 10,092,350 | D | — · — to — | 2,502 Class A Common Stock | (F13) Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. (F13) Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. (F13) Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. |
| 16 | Derivative | Class B Common Stock | 2026-08-04 | C | D | 12,820 | $0.00 | 10,079,530 | D | — · — to — | 12,820 Class A Common Stock | (F13) Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. (F13) Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. (F13) Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. |
| 17 | Derivative | Class B Common Stock | 2026-08-05 | C | D | 12,820 | $0.00 | 10,066,710 | D | — · — to — | 12,820 Class A Common Stock | (F13) Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. (F13) Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. (F13) Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock upon the sale or transfer of such share of Class B Common Stock, subject to certain exceptions, and in certain other circumstances described in the Issuer's amended and restated certificate of incorporation. Each share of Class B Common Stock is also convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. |