Rubrik CFO Kiran Kumar Choudary Sells $1.05M in Class A Shares Under 10b5-1 Plan

Executive Summary

Rubrik, Inc. (NYSE: RBRK) Chief Financial Officer Kiran Kumar Choudary filed a Form 4 disclosing open-market sales of 10,000 shares of Class A Common Stock between September 15, 2026, and September 17, 2026. The sales generated aggregate proceeds of approximately $1.05 million at a weighted average price of $104.81 per share. All open-market sales were conducted pursuant to a pre-established Rule 10b5-1 trading plan adopted on April 15, 2026.

Transaction Breakdown

• Option Exercise & Conversion: On September 15, 2026, Choudary exercised stock options for 4,000 shares of Class B Common Stock at an exercise price of $7.99 per share, subsequently converting them on a 1:1 basis into Class A Common Stock.
• Open-Market Sales (Code S):
  • September 15, 2026: Sold 4,000 shares in five separate weighted-average tranches ranging from $99.08 to $103.48 per share, generating $404,185.78.
  • September 17, 2026: Sold 6,000 shares in five separate weighted-average tranches ranging from $102.05 to $108.05 per share, generating $643,922.36.
• Tax Withholding (Code F): On September 15, 2026, 13,995 shares were disposed of at $100.20 per share ($1,402,299) to cover tax liabilities associated with equity compensation vesting.

Holdings Context & Significance

• Impact on Ownership: Following these transactions, Choudary continues to hold 958,078 shares of Class A Common Stock directly, along with 11,450 remaining exercisable options.
• Significance Level: Low. The open-market sales represent approximately 1% of Choudary's equity holdings in Rubrik. Because the disposals were scheduled under a pre-established Rule 10b5-1 trading plan and combined with routine tax withholding and option exercises, the transactions do not indicate a discretionary shift in executive sentiment.