[Form 4] Rubrik, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Rubrik, Inc. (RBRK) – Lightspeed Form 4 dated 06/30/2025

The filing covers a complex series of internal equity movements among multiple Lightspeed Venture Partners funds and affiliated entities that are each listed as 10% owners of Rubrik. All transactions occurred on 06/26/2025 and involve two basic steps:

• Code C – Conversions: A total of 9,641,000 shares of Class B were automatically converted, one-for-one, into the same number of Class A shares (no cash consideration).
• Code J – Distributions/Other: The newly issued Class A shares were then largely distributed in-kind from the venture funds to their general partners, management companies, or individual partners. These distributions also carried no cash consideration.

Key size metrics reported in Table I:

• Lightspeed Venture Partners IX: 4,440,000 Class A shares received, then distributed, ending balance 0.
• Lightspeed SPV I / I-B / I-C: Combined 4,170,000 Class A shares received and then distributed, each ending balance 0.
• Lightspeed Venture Partners Select II: 1,031,000 shares converted and subsequently distributed, ending balance 0.
• Receiving entities (e.g., Lightspeed Management Company L.L.C., Eggers Investments LP-Fund 2, Nieh Family Investments vehicles) now collectively hold ~766,000 Class A shares.

There was no open-market purchase or sale; the transactions merely shift ownership among related parties. Several Lightspeed funds no longer hold Rubrik shares directly, while individual partners and affiliated management companies now hold modest blocks. These internal realignments could increase Rubrik’s freely transferable Class A float, but no immediate sale obligation is disclosed.

Positive

• Conversion clarifies capital structure: 9.6 million Class B shares converted to Class A, simplifying Rubrik’s share classes.
• No cash outflow or insider sales: Transactions are non-cash internal transfers, avoiding direct market selling pressure at the time of filing.

Negative

• Potential share overhang: ~9.6 million newly free Class A shares are now held by entities more likely to liquidate positions.
• Reduced insider alignment: Several Lightspeed funds, previously 10 % owners, now report zero direct Rubrik holdings.

Insights

Securities Analyst

TL;DR: Large internal share conversions and distributions; no cash, no open-market selling; key Lightspeed funds’ direct stakes fall to zero.

The filing shows 9.6 million Class B shares converted into Class A and immediately distributed among Lightspeed affiliates. Transaction codes C and J confirm non-cash internal transfers, so no direct price discovery occurred. Nevertheless, the structural shift removes several venture funds as direct 10 % holders, potentially signaling portfolio exit planning. Newly created Class A blocks totalling ~9.6 million shares are now dispersed among smaller entities and individuals, marginally boosting Rubrik’s float and reducing voting concentration. Because the shares were not sold, the near-term impact on trading dynamics is limited; however, the overhang risk inches higher if recipients decide to liquidate.

Risk Analyst

TL;DR: Venture fund distributions increase potential supply; ownership concentration drops; medium overhang risk, but no immediate cash sales.

From a liquidity-risk standpoint, the conversion of super-voting Class B into single-vote Class A eliminates conversion uncertainty and paves the way for smoother eventual divestitures. The fact that the originating funds now hold zero shares suggests Lightspeed is preparing to exit Rubrik, transferring residual exposure to GP vehicles and partners who may have shorter investment horizons. Approximately 9.6 million additional Class A shares—over 5 % of Rubrik’s estimated public float—can now be freely sold once any lock-ups expire. While not an outright negative event, the dilution of insider alignment and the latent selling pressure warrant monitoring.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Lightspeed Venture Partners IX, L.P.

(Last) (First) (Middle)

2200 SAND HILL ROAD

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Rubrik, Inc. [ RBRK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
06/26/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	06/26/2025		C		4,440,000	A	$0	4,440,000	D(1)
Class A Common Stock	06/26/2025		C		1,031,000	A	$0	1,031,000	I	By Lightspeed Venture Partners Select II, L.P.(2)
Class A Common Stock	06/26/2025		C		2,004,000	A	$0	2,004,000	I	By Lightspeed SPV I, LLC(3)
Class A Common Stock	06/26/2025		C		1,274,000	A	$0	1,274,000	I	By Lightspeed SPV I-B, LLC(4)
Class A Common Stock	06/26/2025		C		892,000	A	$0	892,000	I	By Lightspeed SPV I-C, LLC(5)
Class A Common Stock	06/26/2025		J(6)		4,440,000	D	$0	0	D(1)
Class A Common Stock	06/26/2025		J(7)		1,159,950	A	$0	1,159,950	I	By Lightspeed General Partner IX, L.P.(8)
Class A Common Stock	06/26/2025		J(9)		1,159,950	D	$0	0	I	By Lightspeed General Partner IX, L.P.(8)
Class A Common Stock	06/26/2025		J(10)		1,031,000	D	$0	0	I	By Lightspeed Venture Partners Select II, L.P.(2)
Class A Common Stock	06/26/2025		J(11)		218,572	A	$0	218,572	I	By Lightspeed General Partner Select II, L.P.(12)
Class A Common Stock	06/26/2025		J(13)		218,572	D	$0	0	I	By Lightspeed General Partner Select II, L.P.(12)
Class A Common Stock	06/26/2025		J(14)		2,004,000	D	$0	0	I	By Lightspeed SPV I, LLC(3)
Class A Common Stock	06/26/2025		J(15)		1,274,000	D	$0	0	I	By Lightspeed SPV I-B, LLC(4)
Class A Common Stock	06/26/2025		J(16)		892,000	D	$0	0	I	By Lightspeed SPV I-C, LLC(5)
Class A Common Stock	06/26/2025		J(17)		400,800	A	$0	400,800	I	By LS SPV Management, LLC(18)
Class A Common Stock	06/26/2025		J(19)		400,800	D	$0	0	I	By LS SPV Management, LLC(18)
Class A Common Stock	06/26/2025		J(20)(21)		16,984	A	$0	16,984	I	By Lightspeed Management Company, L.L.C.(22)
Class A Common Stock	06/26/2025		J(23)		37,961	A	$0	59,182	D(24)
Class A Common Stock	06/26/2025		J(20)(21)		166,963	A	$0	356,242	I	By Eggers Investments LP - Fund 2(25)
Class A Common Stock	06/26/2025		J(23)		37,961	A	$0	59,182	D(26)
Class A Common Stock	06/26/2025		J(20)		146,773	A	$0	396,874	I	By Nieh Family Investments LP - Fund 2(27)
Class A Common Stock	06/26/2025		J(21)		20,190	A	$0	50,331	I	By Nieh Family Investments LP - Fund 4(28)
Class A Common Stock								649	I	By Nieh Family Investments LP - Fund 1(29)
Class A Common Stock								8,387	I	By Nieh Family Investments LP - Fund 3(30)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Class B Common Stock	(31)	06/26/2025		C			4,440,000	(31)	(31)	Class A Common Stock	4,440,000	$0	5,549,816	D(1)
Class B Common Stock	(31)	06/26/2025		C			1,031,000	(31)	(31)	Class A Common Stock	1,031,000	$0	1,288,410	I	By Lightspeed Venture Partners Select II, L.P.(2)
Class B Common Stock	(31)	06/26/2025		C			2,004,000	(31)	(31)	Class A Common Stock	2,004,000	$0	2,507,457	I	By Lightspeed SPV I, LLC(3)
Class B Common Stock	(31)	06/26/2025		C			1,274,000	(31)	(31)	Class A Common Stock	1,274,000	$0	1,973,511	I	By Lightspeed SPV I-B, LLC(4)
Class B Common Stock	(31)	06/26/2025		C			892,000	(31)	(31)	Class A Common Stock	892,000	$0	1,381,358	I	By Lightspeed SPV I-C, LLC(5)
Class B Common Stock	(31)							(31)	(31)	Class A Common Stock	101,659		101,659	I	By Lightspeed Venture Partners X, L.P.(32)

1. Name and Address of Reporting Person^*

Lightspeed Venture Partners IX, L.P.

(Last) (First) (Middle)

2200 SAND HILL ROAD

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Lightspeed General Partner IX, L.P.

(Last) (First) (Middle)

2200 SAND HILL ROAD

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Lightspeed Ultimate General Partner IX, Ltd.

(Last) (First) (Middle)

2200 SAND HILL ROAD

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Lightspeed Venture Partners Select II, L.P.

(Last) (First) (Middle)

2200 SAND HILL ROAD

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Lightspeed General Partner Select II, L.P.

(Last) (First) (Middle)

2200 SAND HILL ROAD

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Lightspeed Ultimate General Partner Select II, Ltd.

(Last) (First) (Middle)

2200 SAND HILL ROAD

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Lightspeed SPV I, LLC

(Last) (First) (Middle)

2200 SAND HILL ROAD

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Lightspeed SPV I-B, LLC

(Last) (First) (Middle)

2200 SAND HILL ROAD

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Lightspeed SPV I-C, LLC

(Last) (First) (Middle)

2200 SAND HILL ROAD

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

LS SPV Management, LLC

(Last) (First) (Middle)

2200 SAND HILL ROAD

(Street)

MENLO PARK CA 94025

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

Explanation of Responses:

1. 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. Barry Eggers, Ravi Mhatre and Peter Nieh are the directors of LUGP IX and share voting and dispositive power with respect to the shares held by Lightspeed IX. Each of LGP IX, LUGP IX and Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports.

2. 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. Barry Eggers, Ravi Mhatre and Peter Nieh are the directors of LUGP Select II and share voting and dispositive power with respect to the shares held by Lightspeed Select II. Each of LGP Select II, LUGP Select II and Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports.

3. Shares are held by Lightspeed SPV I, LLC ("Lightspeed SPV I"). LS SPV Management, LLC ("LS SPV") is the manager of Lightspeed SPV I. Barry Eggers, Ravi Mhatre and Peter Nieh are the managing members of LS SPV and share voting and dispositive power with respect to the shares held by Lightspeed SPV I. Each of LS SPV and Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports.

4. Shares are held by Lightspeed SPV I-B, LLC ("Lightspeed SPV I-B"). LS SPV is the manager of Lightspeed SPV I-B. Barry Eggers, Ravi Mhatre, and Peter Nieh are the managing members of LS SPV and share voting and dispositive power with respect to the shares held by Lightspeed SPV I-B. Each of LS SPV and Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports.

5. Shares are held by Lightspeed SPV I-C, LLC ("Lightspeed SPV I-C"). LS SPV is the manager of Lightspeed SPV I-C. Barry Eggers, Ravi Mhatre, and Peter Nieh are the managing members of LS SPV and share voting and dispositive power with respect to the shares held by Lightspeed SPV I-C. Each of LS SPV and Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports.

6. Represents an in-kind distribution by Lightspeed IX without consideration to its partners (including LGP IX).

7. Represents receipt of shares in the distribution in kind described in footnote (6).

8. Shares are held by LGP IX. LUGP IX is the general partner of LGP IX. Barry Eggers, Ravi Mhatre and Peter Nieh are the directors of LUGP IX and share voting and dispositive power with respect to the shares held by LGP IX. Each of LUGP IX and Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports.

9. Represents an in-kind distribution by LGP IX without consideration to its partners.

10. Represents an in-kind distribution by Lightspeed Select II without consideration to its partners (including LGP Select II).

11. Represents receipt of shares in the distribution in kind described in footnote (10).

12. Shares are held by LGP Select II. LUGP Select II is the general partner of LGP Select II. Barry Eggers, Ravi Mhatre and Peter Nieh are the directors of LUGP Select II and share voting and dispositive power with respect to the shares held by LGP Select II. Each of LUGP Select II and Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports.

13. Represents an in-kind distribution by LGP Select II without consideration to its partners.

14. Represents an in-kind distribution by Lightspeed SPV I without consideration to its members (including LS SPV).

15. Represents an in-kind distribution by Lightspeed SPV I-B without consideration to its members.

16. Represents an in-kind distribution by Lightspeed SPV I-C without consideration to its members.

17. Represents receipt of shares in the distribution in kind described in footnote (14).

18. Shares are held by LS SPV. Barry Eggers, Ravi Mhatre and Peter Nieh are the managing members of LS SPV and share voting and dispositive power with respect to the shares held by LS SPV. Each of Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports.

19. Represents an in-kind distribution by LS SPV without consideration to its members.

20. Represents receipt of shares in the distribution in kind described in footnote (9).

21. Represents receipt of shares in the distribution in kind described in footnote (13).

22. Shares are held by Lightspeed Management Company, L.L.C. ("LMC"). Barry Eggers, Ravi Mhatre, and Peter Nieh are managing members of LMC and share voting and dispositive power with respect to the shares held by LMC. Each of Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports.

23. Represents receipt of shares in the distribution in kind described in footnote (19).

24. Shares are held by Barry Eggers.

25. Barry Eggers serves as trustee of the general partner of Eggers Investments LP - Fund 2.

26. Shares are held by Peter Nieh.

27. Peter Nieh serves as co-trustee of the general partner of Nieh Family Investments LP - Fund 2.

28. Peter Nieh serves as co-trustee of the general partner of Nieh Family Investments LP - Fund 4.

29. Peter Nieh serves as co-trustee of the general partner of Nieh Family Investments LP - Fund 1.

30. Peter Nieh serves as co-trustee of the general partner of Nieh Family Investments LP - Fund 3.

31. 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.

32. Shares are held by Lightspeed Venture Partners X, L.P. ("Lightspeed X"). Lightspeed General Partner X, L.P. ("LGP X") is the general partner of Lightspeed X. Lightspeed Ultimate General Partner X, Ltd. ("LUGP X") is the general partner of LGP X. Barry Eggers, Ravi Mhatre, and Peter Nieh are the directors of LUGP X and share voting and dispositive power with respect to the shares held by Lightspeed X. Each of LGP X, LUGP X and Messrs. Eggers and Nieh disclaims beneficial ownership of these shares except to the extent of its or his respective pecuniary interest therein. Mr. Mhatre is a director of the Issuer and files separate Section 16 reports.

Remarks:

This Form 4 is the first of two Forms 4 filed relating to the same events. Combined, the two Form 4s report transactions for the following Reporting Persons: Lightspeed Venture Partners IX, L.P., Lightspeed General Partner IX, L.P., Lightspeed Ultimate General Partner IX, Ltd., Lightspeed SPV I, LLC, Lightspeed SPV I-B, LLC, Lightspeed SPV I-C, LLC, LS SPV Management, LLC, Lightspeed Venture Partners Select II, L.P., Lightspeed General Partner Select II, L.P., Lightspeed Ultimate General Partner Select II, Ltd., Barry Eggers and Peter Nieh. This Form 4 has been split into two filings because there are more than 10 reporting persons in total, and the SEC's EDGAR filing system limits a single Form 4 to a maximum of 10 reporting persons.

	Lightspeed Venture Partners IX, L.P., By: Lightspeed General Partner IX, L.P., its General Partner, By: Lightspeed Ultimate General Partner IX, Ltd., its General Partner, By /s/ Ravi Mhatre, Director	06/30/2025
	Lightspeed General Partner IX, L.P., By: Lightspeed Ultimate General Partner IX, Ltd., its General Partner, By /s/ Ravi Mhatre, Director	06/30/2025
	Lightspeed Ultimate General Partner IX, Ltd., By /s/ Ravi Mhatre, Director	06/30/2025
	Lightspeed Venture Partners Select II, L.P., By: Lightspeed General Partner Select II, L.P., its General Partner, By: Lightspeed Ultimate General Partner Select II, Ltd., its General Partner, By /s/ Ravi Mhatre, Director	06/30/2025
	Lightspeed General Partner Select II, L.P., By: Lightspeed Ultimate General Partner Select II, Ltd., its General Partner, By /s/ Ravi Mhatre, Director	06/30/2025
	Lightspeed Ultimate General Partner Select II, Ltd., By /s/ Ravi Mhatre, Director	06/30/2025
	Lightspeed SPV I, LLC, By: LS SPV Management, LLC, its Manager, By /s/ Ravi Mhatre, Managing Member	06/30/2025
	Lightspeed SPV I-B, LLC, By: LS SPV Management, LLC, its Manager, By /s/ Ravi Mhatre, Managing Member	06/30/2025
	Lightspeed SPV I-C, LLC, By: LS SPV Management, LLC, its Manager, By /s/ Ravi Mhatre, Managing Member	06/30/2025
	LS SPV Management, LLC, By /s/ Ravi Mhatre, Managing Member	06/30/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What type of transactions did Lightspeed report in Rubrik (RBRK) Form 4?

Code C conversions of Class B to Class A shares and Code J in-kind distributions among related entities; no open-market trades.

How many Rubrik Class A shares did Lightspeed Venture Partners IX distribute?

Lightspeed IX converted and then distributed 4,440,000 Class A shares, ending with zero direct holdings.

Was any cash paid for the shares reported in the Form 4?

No. All entries list a $0 price, indicating non-cash internal transfers.

Did Lightspeed funds remain 10 % owners after these transactions?

Several funds’ direct stakes fell to 0 shares; some affiliated entities still collectively own ~766,000 shares.

What do transaction codes "C" and "J" mean in this filing?

"C" denotes conversion of Class B into Class A; "J" denotes other, in-kind distributions to partners or affiliates.