STOCK TITAN
  1. Home
  2. Sec-filings
  3. RBRK
  4. [Form 4] Rubrik, Inc. Insider Trading Activity

RBRK Form 4: CFO Exercises Options, Executes 10b5-1 Sale at ~$74.8

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Rubrik, Inc. (RBRK) CFO Kiran Kumar reported multiple transactions on Form 4 showing vested equity settlements, option vesting activity and open-market sales. The reporting shows 7,188 RSUs vested/registered on 09/16/2025 and related sell-to-cover activity of 6,599 shares at $74.21. On 09/17/2025 an additional 2,000 stock options were exercised/reported and 3,500 shares were sold at $74.82 under a Rule 10b5-1 plan. After these transactions the reporting person beneficially owned 514,684 shares of Class A common stock. The filing explains the sales were for tax withholding on vested RSUs and pursuant to a pre-established 10b5-1 trading plan.

Positive

  • None.

Negative

  • None.

Insights

TL;DR: Insider sold shares linked to RSU vesting and a Rule 10b5-1 plan; holdings remain substantial.

The transactions are routine for executives following RSU vesting: 7,188 RSUs were recognized and a sell-to-cover of 6,599 shares at $74.21 was executed to satisfy tax obligations. A separate 10b5-1 plan sale of 3,500 shares at $74.82 occurred the next day. The CFO still holds a significant position of 514,684 shares, and exercised 2,000 options. From a market-impact perspective these are controlled, preplanned actions rather than opportunistic market timing.

TL;DR: Disclosures align with standard governance practices—RSU vesting, sell-to-cover, and a dated 10b5-1 plan.

The form provides clear explanations tying sales to tax withholding and a 10b5-1 plan adopted January 15, 2025, which supports procedural compliance. Vesting schedules and conversion mechanics for Class B to Class A shares are detailed, and the reporting includes exercised options with stated vesting history. Documentation appears complete for Section 16 reporting requirements.

Insider Choudary Kiran Kumar
Role Chief Financial Officer
Sold 10,099 shs ($752K)
Approx. gross sale proceeds $752K
Approx. exercise cost $16K
Type Security Shares Price Value
Exercise Stock Option (Right to Buy) 2,000 $0.00 $0.00
Exercise Class B Common Stock 2,000 $0.00 $0.00
Conversion Class B Common Stock 2,000 $0.00 $0.00
Conversion Class A Common Stock 2,000 $0.00 $0.00
Sale Class A Common Stock 3,500 $74.82 $262K
Exercise Restricted Stock Units 7,188 $0.00 $0.00
Exercise Class B Common Stock 7,188 $0.00 $0.00
Conversion Class B Common Stock 7,188 $0.00 $0.00
Conversion Class A Common Stock 7,188 $0.00 $0.00
Sale Class A Common Stock 6,599 $74.21 $490K
Holdings After Transaction: Restricted Stock Units — 14,375 shares (Direct); Class B Common Stock — 0 shares (Direct); Stock Option (Right to Buy) — 60,450 shares (Direct); Class A Common Stock — 514,684 shares (Direct)
Footnotes (6)
  1. F1. This sale reported on this Form 4 was effected pursuant to the Issuer's policy requiring sell-to-cover to satisfy certain tax obligations of the Reporting Person incurred with the vesting and settlement of certain Restricted Stock Units (RSUs).
  2. F2. This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted January 15, 2025.
  3. F3. Each RSU represents a contingent right to receive one share of Class B Common Stock.
  4. F4. The RSUs shall vest as follows: 1/16 of the shares subject to the RSU vested on June 15, 2022, and 1/16 of the shares subject to the RSU vest every quarter thereafter, and a liquidity event-based vesting condition which was satisfied upon the effectiveness of the registration statement on Form S-1 filed by the Issuer in connection with the Issuer's initial public offering, all subject to the Reporting Person continuing to have a Service Relationship (as defined in the Issuer's Amended and Restated 2014 Stock Option and Grant Plan).
  5. F5. 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 will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.
  6. F6. 1/4 of the shares subject to the option vested on August 20, 2019, and 1/48 of the shares vested monthly thereafter.

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google
Add on Google
Form 4 Insider Transactions: What Each Field Means →

FAQ

What transactions did Rubrik CFO Kiran Kumar report on Form 4 (RBRK)?
The filing reports 7,188 RSUs recognized on 09/16/2025, a sell-to-cover of 6,599 shares at $74.21, exercise/recognition of 2,000 options on 09/17/2025, and a 10b5-1 sale of 3,500 shares at $74.82.

How many Rubrik shares does the reporting person own after these transactions?
After the reported transactions the reporting person beneficially owned 514,684 shares of Class A common stock.

Why were shares sold according to the Form 4?
The Form 4 states one sale was a sell-to-cover to satisfy tax obligations from RSU vesting and another sale was executed under a Rule 10b5-1 trading plan adopted 01/15/2025.

What is the vesting schedule described for the RSUs?
Each RSU equals one share; vesting began with 1/16 vesting on 06/15/2022 and continued at 1/16 each quarter thereafter, plus a liquidity-event condition satisfied at the IPO registration effectiveness.

Were any stock options exercised and what are their terms?
The filing shows a stock option with a $7.99 exercise price and vesting that commenced 08/20/2019 (1/4 then monthly thereafter); 2,000 options were reported as recognized/exercisable on 09/17/2025.
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).
1. Name and Address of Reporting Person*
Choudary Kiran Kumar
(Last) (First) (Middle)
C/O RUBRIK INC.
3495 DEER CREEK ROAD
(Street)
PALO ALTO CA 94304
(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 10% Owner
X Officer (give title below) Other (specify below)
Chief Financial Officer
3. Date of Earliest Transaction (Month/Day/Year)
09/16/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
 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 09/16/2025 C 7,188 A $0 522,783 D
Class A Common Stock 09/16/2025 S 6,599(1) D $74.21 516,184 D
Class A Common Stock 09/17/2025 C 2,000 A $0 518,184 D
Class A Common Stock 09/17/2025 S(2) 3,500 D $74.82 514,684 D
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
Restricted Stock Units (3) 09/16/2025 M 7,188 (4) 04/13/2029 Class B Common Stock 7,188 $0 14,375 D
Class B Common Stock (5) 09/16/2025 M 7,188 (5) (5) Class A Common Stock 7,188 $0 7,188 D
Class B Common Stock (5) 09/16/2025 C 7,188 (5) (5) Class A Common Stock 7,188 $0 0 D
Stock Option (Right to Buy) $7.99 09/17/2025 M 2,000 (6) 09/17/2028 Class B Common Stock 2,000 $0 60,450 D
Class B Common Stock (5) 09/17/2025 M 2,000 (5) (5) Class A Common Stock 2,000 $0 2,000 D
Class B Common Stock (5) 09/17/2025 C 2,000 (5) (5) Class A Common Stock 2,000 $0 0 D
Explanation of Responses:
1. This sale reported on this Form 4 was effected pursuant to the Issuer's policy requiring sell-to-cover to satisfy certain tax obligations of the Reporting Person incurred with the vesting and settlement of certain Restricted Stock Units (RSUs).
2. This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted January 15, 2025.
3. Each RSU represents a contingent right to receive one share of Class B Common Stock.
4. The RSUs shall vest as follows: 1/16 of the shares subject to the RSU vested on June 15, 2022, and 1/16 of the shares subject to the RSU vest every quarter thereafter, and a liquidity event-based vesting condition which was satisfied upon the effectiveness of the registration statement on Form S-1 filed by the Issuer in connection with the Issuer's initial public offering, all subject to the Reporting Person continuing to have a Service Relationship (as defined in the Issuer's Amended and Restated 2014 Stock Option and Grant Plan).
5. 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 will also be convertible at any time at the option of the Reporting Person into one share of Class A Common Stock.
6. 1/4 of the shares subject to the option vested on August 20, 2019, and 1/48 of the shares vested monthly thereafter.
/s/ Larry Guo, Attorney-in-Fact 09/18/2025
** 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.

Source: View Original Filing on SEC EDGAR