Form 4 for RBRK Rubrik, Inc.
Accepted 2026-06-26 18:46:26 ET · period of report 2026-06-24 · accession 0001366050-26-000008 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMI | 2026-06-26 18:46 | 2026-06-24 | RBRK | Mhatre Ravi | Dir | C - Cnv Deriv | $0.00 | +2.38M | 259.0K | New | $0 |
| DMI | 2026-06-26 18:46 | 2026-06-24 | RBRK | Mhatre Ravi | Dir | J - Other | $0.00 | -2.34M | 90.2K | -96% | $0 |
| D | 2026-06-26 18:46 | 2026-06-24 | RBRK | Mhatre Ravi | Dir | J - Other | $0.00 | +11.9K | 113.5K | +12% | $0 |
| DI | 2026-06-26 18:46 | 2026-06-26 | RBRK | Mhatre Ravi | Dir | S - Sale | $71.49 | -3,979 | 0 | -100% | -$284.5K |
| DMI | 2026-06-26 18:46 | 2026-06-24 | RBRK | Mhatre Ravi | Dir | C - Cnv Deriv | $0.00 | -2.38M | 777.0K | -75% | $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 | 2026-06-24 | C | A | 1,040,590 | $0.00 | 1,040,590 | I By Lightspeed Venture Partners IX, L.P. | — | — | (F1) Shares are held by Lightspeed Venture Partners IX, L.P. ("Lightspeed IX"). Lightspeed General Partner IX, L.P. ("LGP IX") is the general partner of Lightspeed IX. Lightspeed Ultimate General Partner IX, Ltd. ("LUGP IX") is the general partner of LGP IX. The Reporting Person is a director of LUGP IX and shares voting and dispositive power with respect to the shares held by Lightspeed IX. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 2 | Common | Class A Common Stock | 2026-06-24 | C | A | 241,577 | $0.00 | 241,577 | I By Lightspeed Venture Partners Select II, L.P. | — | — | (F2) Shares are held by Lightspeed Venture Partners Select II, L.P. ("Lightspeed Select II"). Lightspeed General Partner Select II, L.P. ("LGP Select II") is the general partner of Lightspeed Select II. Lightspeed Ultimate General Partner Select II, Ltd. ("LUGP Select II") is the general partner of LGP Select II. The Reporting Person is a director of LUGP Select II and shares voting and dispositive power with respect to the shares held by Lightspeed Select II. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 3 | Common | Class A Common Stock | 2026-06-24 | C | A | 470,148 | $0.00 | 470,148 | I By Lightspeed SPV I, LLC | — | — | (F3) Shares are held by Lightspeed SPV I, LLC ("Lightspeed SPV I"). LS SPV Management, LLC ("LS SPV") is the manager of Lightspeed SPV I. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 4 | Common | Class A Common Stock | 2026-06-24 | C | A | 370,033 | $0.00 | 370,033 | I By Lightspeed SPV I-B, LLC | — | — | (F4) Shares are held by Lightspeed SPV I-B, LLC ("Lightspeed SPV I-B"). LS SPV is the manager of Lightspeed SPV I-B. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I-B. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 5 | Common | Class A Common Stock | 2026-06-24 | C | A | 259,005 | $0.00 | 259,005 | I By Lightspeed SPV I-C, LLC | — | — | (F5) Shares are held by Lightspeed SPV I-C, LLC ("Lightspeed SPV I-C"). LS SPV is the manager of Lightspeed SPV I-C. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I-C. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 6 | Common | Class A Common Stock | 2026-06-24 | J | D | 1,040,590 | $0.00 | 0 | I By Lightspeed Venture Partners IX, L.P. | — | — | (F6) Represents an in-kind distribution by Lightspeed IX without consideration to its partners (including LGP IX). (F1) Shares are held by Lightspeed Venture Partners IX, L.P. ("Lightspeed IX"). Lightspeed General Partner IX, L.P. ("LGP IX") is the general partner of Lightspeed IX. Lightspeed Ultimate General Partner IX, Ltd. ("LUGP IX") is the general partner of LGP IX. The Reporting Person is a director of LUGP IX and shares voting and dispositive power with respect to the shares held by Lightspeed IX. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 7 | Common | Class A Common Stock | 2026-06-24 | J | A | 271,855 | $0.00 | 271,855 | I By Lightspeed General Partner IX, L.P. | — | — | (F7) Represents receipt of shares in the distribution in kind described in footnote (6). (F8) Shares are held by LGP IX. LUGP IX is the general partner of LGP IX. The Reporting Person is a director of LUGP IX and shares voting and dispositive power with respect to the shares held by LGP IX. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 8 | Common | Class A Common Stock | 2026-06-24 | J | D | 271,855 | $0.00 | 0 | I By Lightspeed General Partner IX, L.P. | — | — | (F9) Represents an in-kind distribution by LGP IX without consideration to its partners. (F8) Shares are held by LGP IX. LUGP IX is the general partner of LGP IX. The Reporting Person is a director of LUGP IX and shares voting and dispositive power with respect to the shares held by LGP IX. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 9 | Common | Class A Common Stock | 2026-06-24 | J | D | 241,577 | $0.00 | 0 | I By Lightspeed Venture Partners Select II, L.P. | — | — | (F10) Represents an in-kind distribution by Lightspeed Select II without consideration to its partners (including LGP Select II). (F2) Shares are held by Lightspeed Venture Partners Select II, L.P. ("Lightspeed Select II"). Lightspeed General Partner Select II, L.P. ("LGP Select II") is the general partner of Lightspeed Select II. Lightspeed Ultimate General Partner Select II, Ltd. ("LUGP Select II") is the general partner of LGP Select II. The Reporting Person is a director of LUGP Select II and shares voting and dispositive power with respect to the shares held by Lightspeed Select II. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 10 | Common | Class A Common Stock | 2026-06-24 | J | A | 51,215 | $0.00 | 51,215 | I By Lightspeed General Partner Select II, L.P. | — | — | (F11) Represents receipt of shares in the distribution in kind described in footnote (10). (F12) Shares are held by LGP Select II. LUGP Select II is the general partner of LGP Select II. The Reporting Person is a director of LUGP Select II and shares voting and dispositive power with respect to the shares held by LGP Select II. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 11 | Common | Class A Common Stock | 2026-06-24 | J | D | 51,215 | $0.00 | 0 | I By Lightspeed General Partner Select II, L.P. | — | — | (F13) Represents an in-kind distribution by LGP Select II without consideration to its partners. (F12) Shares are held by LGP Select II. LUGP Select II is the general partner of LGP Select II. The Reporting Person is a director of LUGP Select II and shares voting and dispositive power with respect to the shares held by LGP Select II. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 12 | Common | Class A Common Stock | 2026-06-24 | J | D | 470,148 | $0.00 | 0 | I By Lightspeed SPV I, LLC | — | — | (F14) Represents an in-kind distribution by Lightspeed SPV I without consideration to its members. (F3) Shares are held by Lightspeed SPV I, LLC ("Lightspeed SPV I"). LS SPV Management, LLC ("LS SPV") is the manager of Lightspeed SPV I. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 13 | Common | Class A Common Stock | 2026-06-24 | J | D | 370,033 | $0.00 | 0 | I By Lightspeed SPV I-B, LLC | — | — | (F15) Represents an in-kind distribution by Lightspeed SPV I-B without consideration to its members. (F4) Shares are held by Lightspeed SPV I-B, LLC ("Lightspeed SPV I-B"). LS SPV is the manager of Lightspeed SPV I-B. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I-B. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 14 | Common | Class A Common Stock | 2026-06-24 | J | D | 259,005 | $0.00 | 0 | I By Lightspeed SPV I-C, LLC | — | — | (F16) Represents an in-kind distribution by Lightspeed SPV I-C without consideration to its members. (F5) Shares are held by Lightspeed SPV I-C, LLC ("Lightspeed SPV I-C"). LS SPV is the manager of Lightspeed SPV I-C. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I-C. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 15 | Common | Class A Common Stock | 2026-06-24 | J | A | 94,030 | $0.00 | 94,030 | I By LS SPV Management, LLC | — | — | (F17) Represents receipt of shares in the distribution in kind described in footnote (14). (F18) Shares are held by LS SPV. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by LS SPV. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 16 | Common | Class A Common Stock | 2026-06-24 | J | D | 94,030 | $0.00 | 0 | I By LS SPV Management, LLC | — | — | (F19) Represents an in-kind distribution by LS SPV without consideration to its members. (F18) Shares are held by LS SPV. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by LS SPV. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 17 | Common | Class A Common Stock | 2026-06-24 | J | A | 3,979 | $0.00 | 3,979 | I By Lightspeed Management Company, L.L.C. | — | — | (F20) Represents receipt of shares in the distribution in kind described in footnote (9). (F21) Represents receipt of shares in the distribution in kind described in footnote (13). (F22) Shares are held by Lightspeed Management Company, L.L.C. ("LMC"). The Reporting Person is a managing member of LMC and shares voting and dispositive power with respect to the shares held by LMC. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 18 | Common | Class A Common Stock | 2026-06-24 | J | A | 11,874 | $0.00 | 113,477 | D | — | — | (F23) Represents receipt of shares in the distribution in kind described in footnote (19). |
| 19 | Common | Class A Common Stock | 2026-06-24 | J | A | 34,399 | $0.00 | 477,138 | I By Mhatre Investments LP - Fund 2 | — | — | (F20) Represents receipt of shares in the distribution in kind described in footnote (9). (F24) The Reporting Person serves as trustee of the general partner of Mhatre Investments LP - Fund 2. |
| 20 | Common | Class A Common Stock | 2026-06-24 | J | A | 6,308 | $0.00 | 90,217 | I By Mhatre Investments LP - Fund 3 | — | — | (F21) Represents receipt of shares in the distribution in kind described in footnote (13). (F25) The Reporting Person serves as trustee of the general partner of Mhatre Investments LP - Fund 3. |
| 21 | Common | Class A Common Stock | 2026-06-26 | S | D | 3,979 | $71.49 | 0 | I By Lightspeed Management Company, L.L.C. | — | — | (F26) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $71.36 to $71.58 inclusive. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. (F22) Shares are held by Lightspeed Management Company, L.L.C. ("LMC"). The Reporting Person is a managing member of LMC and shares voting and dispositive power with respect to the shares held by LMC. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 22 | Derivative | Class B Common Stock | 2026-06-24 | C | D | 1,040,590 | $0.00 | 3,121,772 | I By Lightspeed Venture Partners IX, L.P. | — · — to — | 1,040,590 Class A Common Stock | (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F1) Shares are held by Lightspeed Venture Partners IX, L.P. ("Lightspeed IX"). Lightspeed General Partner IX, L.P. ("LGP IX") is the general partner of Lightspeed IX. Lightspeed Ultimate General Partner IX, Ltd. ("LUGP IX") is the general partner of LGP IX. The Reporting Person is a director of LUGP IX and shares voting and dispositive power with respect to the shares held by Lightspeed IX. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 23 | Derivative | Class B Common Stock | 2026-06-24 | C | D | 241,577 | $0.00 | 724,730 | I By Lightspeed Venture Partners Select II, L.P. | — · — to — | 241,577 Class A Common Stock | (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F2) Shares are held by Lightspeed Venture Partners Select II, L.P. ("Lightspeed Select II"). Lightspeed General Partner Select II, L.P. ("LGP Select II") is the general partner of Lightspeed Select II. Lightspeed Ultimate General Partner Select II, Ltd. ("LUGP Select II") is the general partner of LGP Select II. The Reporting Person is a director of LUGP Select II and shares voting and dispositive power with respect to the shares held by Lightspeed Select II. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 24 | Derivative | Class B Common Stock | 2026-06-24 | C | D | 470,148 | $0.00 | 1,410,445 | I By Lightspeed SPV I, LLC | — · — to — | 470,148 Class A Common Stock | (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F3) Shares are held by Lightspeed SPV I, LLC ("Lightspeed SPV I"). LS SPV Management, LLC ("LS SPV") is the manager of Lightspeed SPV I. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 25 | Derivative | Class B Common Stock | 2026-06-24 | C | D | 370,033 | $0.00 | 1,110,100 | I By Lightspeed SPV I-B, LLC | — · — to — | 370,033 Class A Common Stock | (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F4) Shares are held by Lightspeed SPV I-B, LLC ("Lightspeed SPV I-B"). LS SPV is the manager of Lightspeed SPV I-B. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I-B. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |
| 26 | Derivative | Class B Common Stock | 2026-06-24 | C | D | 259,005 | $0.00 | 777,013 | I By Lightspeed SPV I-C, LLC | — · — to — | 259,005 Class A Common Stock | (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F28) Each share of Class B Common Stock 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 holder into one share of Class A Common Stock. (F5) Shares are held by Lightspeed SPV I-C, LLC ("Lightspeed SPV I-C"). LS SPV is the manager of Lightspeed SPV I-C. The Reporting Person is a managing member of LS SPV and shares voting and dispositive power with respect to the shares held by Lightspeed SPV I-C. The Reporting Person disclaims beneficial ownership of these shares except to the extent of his pecuniary interest therein. |