Skip to content
Baker Capital StrategiesMARKETS. FILINGS. PERSPECTIVE.
Powered by THEMA

BAKER CAPITAL STRATEGIES

Get the free weekly BCS email.

Selected company filings and market updates, delivered by email. Your first report will follow soon.

  • Your weekly BCS reportMarket updates and links to filings you can explore.
  • THEMA at launchWe’ll send directions for setting up your filing alerts when THEMA officially opens.

One signup for the weekly email and your free THEMA Basic account at launch.

Already registered or a CSW member?Log in to THEMA →

At least 8 characters. This also creates your free THEMA account for launch.

You’re signing up for the weekly BCS email and THEMA launch/setup updates. Unsubscribe using the link in any email. Privacy policy · Terms

BCS

Changes in Beneficial Ownership · 4

Rubrik, Inc.

RBRKNYSEEQUITYCurrent

Changes in Beneficial Ownership

Filed Nov 4, 2026Accepted Nov 4, 2026, 8:14 PM ESTFiling CIK 1943896Accession 0001707744-26-000025
Share

Structured filing — 4

form4-11052026_011144.xml

Open full document ↗

Filing details

Report period
2026-11-04
Issuer
Rubrik, Inc.
Issuer CIK
0001943896
Trading symbol
RBRK
Rule 10b5-1 indication
Checked

Reporting owner 1

Name
Wassenaar Yvonne
Reporting owner CIK
0001707744
Relationship
Director
Address
C/O RUBRIK INC., 3495 DEER CREEK ROAD, PALO ALTO, CA, 94304

Non-derivative transactions

Non-derivative transactions · 2 reported rows
SecurityTransaction dateCodeAmountA / DPrice (USD)Owned afterOwnership
Class A Common Stock2026-11-04C · Form 4721A03,709D
Class A Common Stock2026-11-04S · Form 4[F1]721D116.612,988D
Table key
C · Form 4
Derivative conversion
A
Acquired
D
Direct
S · Form 4
Sale on the market or privately

Derivative transactions

Derivative transactions · 1 reported row
SecurityConversion / exercise price (USD)Transaction dateCodeAmountA / DPrice (USD)ExercisableExpiresUnderlying securityUnderlying sharesOwned afterOwnership
Class B Common Stock[F2]2026-11-04C · Form 4721D0[F2][F2]Class A Common Stock72131,882D
Table key
C · Form 4
Derivative conversion
D
Direct

Footnotes

F1
This sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan, adopted December 15, 2025.↩ 1
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.↩ 1↩ 2↩ 3

Signature 1

Signed
/s/ Anne-Kathrin Lalendran, Attorney-in-Fact
Date
2026-11-04

Company context

Rubrik (NYSE: RBRK), the Security and AI Operations Company, leads at the intersection of data protection, cyber resilience, and enterprise AI acceleration. Rubrik Security Cloud delivers complete cyber resilience by securing, monitoring, and recovering data, identities, and workloads across clouds. Rubrik Agent Cloud accelerates trusted AI agent deployments at scale by monitoring and auditing agentic actions, enforcing real-time guardrails, fine-tuning for accuracy and undoing agentic mistakes.

Current securities

Recent company filings

  1. SCHEDULE 13G/A - filed by FMR LLC regarding Rubrik, Inc.Nov 5, 2026
  2. 4 filingNov 3, 2026
  3. 144 filingNov 2, 2026
  4. 144 filingNov 2, 2026
  5. 4 filingOct 6, 2026

Privacy choices

BCS measures page use with Google Analytics using regional consent settings. You can change your preference here. Charts and market data remain available.

Essential functions — always available. Security, navigation, registration and remembering these choices.

Audience analytics

Analytics cookies are off by default for visitors Google identifies in the EEA, UK or Switzerland until allowed. Limited measurement without analytics cookies may still occur under those regional defaults.

TradingView charts, quotes and the economic calendar load automatically as page content. TradingView receives network and browser information and may collect its own usage analytics. This choice controls BCS’s Google Analytics only.

Google advertising is not enabled. Direct sponsor links do not load advertising trackers on BCS.

Turning analytics off stops future Google Analytics activity here. It does not erase information already received by the provider. Read the privacy policy.