Was Yvonne Wassenaar’s Rubrik (RBRK) share sale under a Rule 10b5-1 plan?

Yes. The Form 4 discloses that the 2,838-share sale was effected pursuant to a Rule 10b5-1 trading plan adopted on December 15, 2025. Such plans pre-schedule trades, reducing the significance of short-term market timing.

Rubrik director sells 2,838 shares at $75 each

Rubrik director Yvonne Wassenaar reported a mix of sales and share conversions.

Filing Impact

(Moderate)

Filing Sentiment

(Negative)How Sentiment works

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

How Sentiment works How the balance works

Form Type

Rhea-AI Filing Summary

Rubrik director Yvonne Wassenaar reported a mix of sales and share conversions. She executed an open-market sale of 2,838 shares of Class A Common Stock at $75.00 per share on May 29, 2026, under a pre-arranged Rule 10b5-1 trading plan adopted on December 15, 2025.

On the same date, she converted 2,163 shares of Class B Common Stock into 2,163 shares of Class A Common Stock through a derivative conversion. Following these transactions, she directly holds 2,326 shares of Class A Common Stock and 33,837 shares of Class B Common Stock.

Insider Trade Summary 10b5-1

Exercise and sale activity reported; no spread calculated

Exercise and Sale 3 txns

Insider Wassenaar Yvonne

Role Director

Sold 2,838 shs ($213K)

Approx. gross sale proceeds $213K

Approx. exercise cost $0.00

Type	Security	Shares	Price	Value
Conversion	Class B Common Stock	2,163	$0.00	$0.00
Conversion	Class A Common Stock	2,163	$0.00	$0.00
Sale	Class A Common Stock	2,838	$75.00	$213K

Holdings After Transaction: Class B Common Stock — 33,837 contracts (Direct); Class A Common Stock — 2,326 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.

Key Figures

Shares sold: 2,838 shares Sale price: $75.00 per share Class A after transactions: 5,164 shares +3 more

6 metrics

Shares sold 2,838 shares Class A Common Stock sold on May 29, 2026

Sale price $75.00 per share Open-market sale of Class A on May 29, 2026

Class A after transactions 5,164 shares Direct Class A holdings following May 29, 2026 transactions

Class B after conversion 33,837 shares Direct Class B holdings following May 29, 2026 conversion

Class B converted 2,163 shares Class B to Class A derivative conversion on May 29, 2026

Net shares sold 2,838 shares Net buy/sell direction reported as net-sell in summary

Key Terms

Rule 10b5-1 trading plan, Class A Common Stock, Class B Common Stock, Conversion of derivative security, +1 more

5 terms

Rule 10b5-1 trading plan regulatory

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

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.

Class A Common Stock financial

"security_title: Class A Common Stock; open-market sale and post-transaction holdings."

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

Class B Common Stock financial

"Each share of Class B Common Stock held by the Reporting Person will automatically convert into one share of Class A Common Stock..."

A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.

Conversion of derivative security financial

"transaction_code_description: Conversion of derivative security for Class B into Class A."

derivative conversion financial

"transaction_action: derivative conversion for 2,163 shares on May 29, 2026."

FAQ

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

What insider transactions did Rubrik (RBRK) director Yvonne Wassenaar report?

Yvonne Wassenaar reported selling 2,838 shares of Rubrik Class A Common Stock and converting 2,163 Class B shares into Class A. These transactions occurred on May 29, 2026, and together changed both her share mix and total Class A holdings.

How many Rubrik (RBRK) shares did Yvonne Wassenaar sell and at what price?

She sold 2,838 shares of Rubrik Class A Common Stock at an average price of $75.00 per share. This was an open-market sale and is classified as a routine disposition reported on a Form 4 insider trading report.

What happened to Yvonne Wassenaar’s Rubrik (RBRK) Class B Common Stock holdings?

She converted 2,163 shares of Class B Common Stock into 2,163 shares of Class A Common Stock through a derivative conversion. After this transaction, she continued to hold 33,837 Class B shares directly, alongside increased Class A holdings.

How many Rubrik (RBRK) shares does Yvonne Wassenaar hold after these transactions?

Following the reported sale and conversion, she directly holds 5,164 shares of Rubrik Class A Common Stock and 33,837 shares of Class B Common Stock. These post-transaction balances are disclosed explicitly in the Form 4 data.

What does the Class B to Class A conversion mean for Rubrik (RBRK) stock structure?

Each converted Class B share became one Class A share, as described in Rubrik’s charter. The filing notes Class B automatically converts to Class A upon certain transfers and is also convertible at the holder’s option at any time.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 06/01/2026 - 05:46 PM EDT

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)
05/29/2026

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	05/29/2026		C		2,163	A	$0	5,164	D
Class A Common Stock	05/29/2026		S⁽¹⁾		2,838	D	$75	2,326	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⁾	05/29/2026		C			2,163	⁽²⁾	⁽²⁾	Class A Common Stock	2,163	$0	33,837	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.

	/s/ Larry Guo, Attorney-in-Fact	06/01/2026
	** 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