SEC Form 4 · accession 0001366050-26-000010

Rubrik, Inc. · RBRK

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owner

Ravi Mhatre

Director

Period of report

Jul 10, 2026

Accepted (ET)

Jul 14, 2026 · 4:15 pm EDT

Rule 10b5-1 plan

box not checked

Issuer CIK

0001943896

Table I — non-derivative securities

Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Class A Common Stock^F1	Jul 10, 2026	C	1,040,590	$0.00	A	1,040,590	I	By Lightspeed Venture Partners IX, L.P.
Class A Common Stock^F2	Jul 10, 2026	C	241,577	$0.00	A	241,577	I	By Lightspeed Venture Partners Select II, L.P.
Class A Common Stock^F3	Jul 10, 2026	C	470,148	$0.00	A	470,148	I	By Lightspeed SPV I, LLC
Class A Common Stock^F4	Jul 10, 2026	C	370,033	$0.00	A	370,033	I	By Lightspeed SPV I-B, LLC
Class A Common Stock^F5	Jul 10, 2026	C	259,005	$0.00	A	259,005	I	By Lightspeed SPV I-C, LLC
Class A Common Stock^F1	Jul 10, 2026	J	1,040,590	$0.00	D	0	I	By Lightspeed Venture Partners IX, L.P.
Class A Common Stock^F8	Jul 10, 2026	J	271,855	$0.00	A	271,855	I	By Lightspeed General Partner IX, L.P.
Class A Common Stock^F8	Jul 10, 2026	J	271,855	$0.00	D	0	I	By Lightspeed General Partner IX, L.P.
Class A Common Stock^F2	Jul 10, 2026	J	241,577	$0.00	D	0	I	By Lightspeed Venture Partners Select II, L.P.
Class A Common Stock^F12	Jul 10, 2026	J	51,215	$0.00	A	51,215	I	By Lightspeed General Partner Select II, L.P.
Class A Common Stock^F12	Jul 10, 2026	J	51,215	$0.00	D	0	I	By Lightspeed General Partner Select II, L.P.
Class A Common Stock^F3	Jul 10, 2026	J	470,148	$0.00	D	0	I	By Lightspeed SPV I, LLC
Class A Common Stock^F4	Jul 10, 2026	J	370,033	$0.00	D	0	I	By Lightspeed SPV I-B, LLC
Class A Common Stock^F5	Jul 10, 2026	J	259,005	$0.00	D	0	I	By Lightspeed SPV I-C, LLC
Class A Common Stock^F18	Jul 10, 2026	J	94,030	$0.00	A	94,030	I	By LS SPV Management, LLC
Class A Common Stock^F18	Jul 10, 2026	J	94,030	$0.00	D	0	I	By LS SPV Management, LLC
Class A Common Stock^F22	Jul 10, 2026	J	3,979	$0.00	A	3,979	I	By Lightspeed Management Company, L.L.C.
Class A Common Stock	Jul 10, 2026	J	11,874	$0.00	A	125,351	D
Class A Common Stock^F24	Jul 10, 2026	J	34,399	$0.00	A	511,537	I	By Mhatre Investments LP - Fund 2
Class A Common Stock^F25	Jul 10, 2026	J	6,308	$0.00	A	96,525	I	By Mhatre Investments LP - Fund 3
Class A Common Stock^F26,F22	Jul 13, 2026	S	3,979	$83.10	D	0	I	By Lightspeed Management Company, L.L.C.
Class A Common Stock^F27	holding	—	—		—	649	I	By Trust

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Class B Common Stock^F1,F28	—	Jul 10, 2026	C	1,040,590	D	—	—	Class A Common Stock	1,040,590	2,081,182	I
Class B Common Stock^F2,F28	—	Jul 10, 2026	C	241,577	D	—	—	Class A Common Stock	241,577	483,153	I
Class B Common Stock^F3,F28	—	Jul 10, 2026	C	470,148	D	—	—	Class A Common Stock	470,148	940,297	I
Class B Common Stock^F4,F28	—	Jul 10, 2026	C	370,033	D	—	—	Class A Common Stock	370,033	740,067	I
Class B Common Stock^F5,F28	—	Jul 10, 2026	C	259,005	D	—	—	Class A Common Stock	259,005	518,008	I

Explanation of responses

F1Shares 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.
F10Represents an in-kind distribution by Lightspeed Select II without consideration to its partners (including LGP Select II).
F11Represents receipt of shares in the distribution in kind described in footnote (10).
F12Shares 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.
F13Represents an in-kind distribution by LGP Select II without consideration to its partners.
F14Represents an in-kind distribution by Lightspeed SPV I without consideration to its members.
F15Represents an in-kind distribution by Lightspeed SPV I-B without consideration to its members.
F16Represents an in-kind distribution by Lightspeed SPV I-C without consideration to its members.
F17Represents receipt of shares in the distribution in kind described in footnote (14).
F18Shares 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.
F19Represents an in-kind distribution by LS SPV without consideration to its members.
F2Shares 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.
F20Represents receipt of shares in the distribution in kind described in footnote (9).
F21Represents receipt of shares in the distribution in kind described in footnote (13).
F22Shares 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.
F23Represents receipt of shares in the distribution in kind described in footnote (19).
F24The Reporting Person serves as trustee of the general partner of Mhatre Investments LP - Fund 2.
F25The Reporting Person serves as trustee of the general partner of Mhatre Investments LP - Fund 3.
F26The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.81 to $83.33 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.
F27The Reporting Person is the trustee of the Mhatre 2011 Irrevocable Children's Trust.
F28Each 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.
F3Shares 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.
F4Shares 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.
F5Shares 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.
F6Represents an in-kind distribution by Lightspeed IX without consideration to its partners (including LGP IX).
F7Represents receipt of shares in the distribution in kind described in footnote (6).
F8Shares 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.
F9Represents an in-kind distribution by LGP IX without consideration to its partners.