Rubrik director Yvonne Wassenaar sells 721 shares

Q: How many RBRK shares did director Yvonne Wassenaar sell?

Yvonne Wassenaar sold 721 shares of Class A Common Stock on November 4, 2026, at $116.61 per share.

Q: Was Yvonne Wassenaar's RBRK sale made under a trading plan?

The 721-share sale was effected pursuant to a Rule 10b5-1 trading plan adopted December 15, 2025.

The certificate terms provide for one-for-one automatic conversion of Class B shares upon sale, subject to certain exceptions.

Available on EDGAR 11/04/2026 - 08:15 PM EST Accepted by SEC EDGAR 11/04/2026 - 08:14 PM EST

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Form Type

Rhea-AI Filing Summary

Rubrik, Inc. director Yvonne Wassenaar converted 721 shares of Class B Common Stock into 721 shares of Class A Common Stock on November 4, 2026, then sold the 721 Class A shares at $116.61 per share. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted December 15, 2025. The reported Class B holdings following the transaction were 31,882 shares.

Insider Trade Summary 10b5-1

Exercise and sale activity reported; no spread calculated

Exercise and Sale 3 txns

Insider Wassenaar Yvonne

Role Director

Sold 721 shs ($84K)

Approx. gross sale proceeds $84K

Type	Security	Shares	Price	Value
Conversion	Class B Common Stock ^F2	721	$0.00	$0.00
Conversion	Class A Common Stock	721	$0.00	$0.00
Sale	Class A Common Stock ^F1	721	$116.61	$84K

Holdings After Transaction: Class B Common Stock — 31,882 contracts (Direct); Class A Common Stock — 2,988 shares (Direct)

Footnotes (2)

F1. This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted December 15, 2025.
F2. 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 and has no expiration date.

Key Figures

Class A shares sold: 721 shares Sale price: $116.61 per share Shares converted: 721 Class B shares into 721 Class A shares +1 more

4 metrics

Class A shares sold 721 shares November 4, 2026

Sale price $116.61 per share Class A Common Stock sale on November 4, 2026

Shares converted 721 Class B shares into 721 Class A shares November 4, 2026

Class B holdings following transaction 31,882 shares Reported after the November 4, 2026 transaction

Key Terms

Rule 10b5-1 trading plan, automatically converts, amended and restated certificate of incorporation

3 terms

Rule 10b5-1 trading plan regulatory

"effected pursuant to a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

automatically converts technical

"will automatically convert into one share of Class A Common Stock"

amended and restated certificate of incorporation regulatory

"described in the Issuer's amended and restated certificate of incorporation"

A company’s amended and restated certificate of incorporation is an updated version of its foundational legal charter that replaces the older document and folds in all changes into one clear copy; it spells out corporate structure, classes of stock, shareholder rights and key governance rules. Investors care because it can change who controls the company, how votes are counted, what claims shareholders have on assets or dividends, and can introduce or remove protections against takeovers—like updating a house title after a major renovation to show who owns what and under what rules.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many RBRK shares did director Yvonne Wassenaar sell?

Yvonne Wassenaar sold 721 shares of Class A Common Stock on November 4, 2026, at $116.61 per share.

Was Yvonne Wassenaar's RBRK sale made under a trading plan?

The 721-share sale was effected pursuant to a Rule 10b5-1 trading plan adopted December 15, 2025.

How does RBRK Class B stock convert to Class A?

Each Class B share held by the Reporting Person automatically converts into one Class A share upon sale or transfer, subject to certain exceptions. The terms also allow conversion at the Reporting Person's option at any time, and Class B shares have no expiration date.

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

Form 4 Insider Transactions: What Each Field Means →

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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^*

Wassenaar Yvonne

(Last)

(First)

(Middle)

C/O RUBRIK INC.

3495 DEER CREEK ROAD

(Street)

PALO ALTO

CALIFORNIA

94304

(City)

(State)

(Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/04/2026

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

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

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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Class A Common Stock	11/04/2026		C		721	A	$0	3,709	D
Class A Common Stock	11/04/2026		S⁽¹⁾		721	D	$116.61	2,988	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Class B Common Stock	⁽²⁾	11/04/2026		C			721	⁽²⁾	⁽²⁾	Class A Common Stock	721	$0	31,882	D

Explanation of Responses:

1. This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted December 15, 2025.

2. 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 and has no expiration date.

	/s/ Anne-Kathrin Lalendran, Attorney-in-Fact	11/04/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR