Rubrik (NYSE: RBRK) director updates Form 4 to add stock sales

Rhea-AI Filing Summary

Rubrik, Inc. director files an amended insider trading report adding previously omitted sales of Class A common stock made through an affiliated entity. The amendment covers sales on December 12, 2025 by Lightspeed Management Company, L.L.C., including 3,707 shares at a weighted average price of $84.96 and 1,600 shares at $85.99. After these transactions, the filing shows indirect beneficial ownership decreasing from 1,600 shares to zero. The director is a managing member of Lightspeed Management Company, L.L.C. and shares voting and dispositive power over these shares, but disclaims beneficial ownership except to the extent of his pecuniary interest.

Insider Trade Summary

Net Seller: 5,307 shares ($452,531)

Net Sell 2 txns

Insider Mhatre Ravi

Role Director

Sold 5,307 shs ($453K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	3,707	$84.96	$315K
Sale	Class A Common Stock	1,600	$85.99	$138K

Holdings After Transaction: Class A Common Stock — 1,600 shares (Indirect, By Lightspeed Management Company, L.L.C.)

Footnotes (1)

1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.60 to $85.31 inclusive. The Reporting Person undertakes 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. 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.

Form 4 Insider Transactions: What Each Field Means →

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^*

Mhatre Ravi

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
12/12/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)
12/15/2025

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

X	Form filed by One Reporting Person
	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	12/12/2025		S		3,707	D	$84.96(1)	1,600	I	By Lightspeed Management Company, L.L.C.(2)
Class A Common Stock	12/12/2025		S		1,600	D	$85.99	0	I	By Lightspeed Management Company, L.L.C.(2)

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

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.60 to $85.31 inclusive. The Reporting Person undertakes 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.

2. 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.

Remarks:

This Form 4 amendment is being filed to correct the original Form 4 filed on December 15, 2025 which inadvertently omitted sales by LMC on December 12, 2025

	/s/ Ravi Mhatre	01/16/2026
	** 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 did Rubrik (RBRK) disclose in this amended Form 4?

The filing reports an amendment to a prior insider trading report to add previously omitted indirect sales of Rubrik Class A common stock made through Lightspeed Management Company, L.L.C. on December 12, 2025.

How many Rubrik (RBRK) shares were sold in the newly reported transactions?

The amendment lists two indirect sales: 3,707 shares of Class A common stock at a weighted average price of $84.96 and 1,600 shares at $85.99.

Who actually held the Rubrik (RBRK) shares that were sold?

The shares were held by Lightspeed Management Company, L.L.C. The reporting person is a managing member of that entity and shares voting and dispositive power over the shares.

Does the Rubrik (RBRK) director claim full beneficial ownership of these shares?

No. The reporting person disclaims beneficial ownership of the shares held by Lightspeed Management Company, L.L.C. except to the extent of his pecuniary interest in them.

What was the purpose of amending the original Rubrik (RBRK) Form 4?

The amendment states it was filed to correct the original Form 4 submitted on December 15, 2025, which inadvertently omitted the December 12, 2025 sales by Lightspeed Management Company, L.L.C.

What is the reporting person’s relationship to Rubrik (RBRK)?

The reporting person is identified as a Director of Rubrik, Inc., with the filing made as a Form 4/A by one reporting person.