Rubrik Director John W. Thompson Executes 10b5-1 Sale of 13,500 Shares

Insider Transaction Overview

On September 1, 2026, John Wendell Thompson, Director at Rubrik, Inc. ($RBRK), executed multiple dispositions totaling 13,500 shares of Class A Common Stock, generating gross proceeds of approximately $1.20 million.

Key Details:

• Direct Transactions: Exercised 11,000 stock options at an exercise price of $4.38 into Class B Common Stock, converted them 1:1 into Class A Common Stock, and sold all 11,000 shares across multiple weighted-average price tranches ($88.34 to $92.37), leaving 8,362 Class A shares held directly.
• Indirect Transactions: Sold 2,500 Class A shares held via the John and Sandra Thompson Trust across multiple price tranches ($88.58 to $91.66), leaving 7,500 Class A shares and 815,338 Class B shares held indirectly by the trust.
• Pre-Arranged Trading Plan: All sales were executed pursuant to a pre-established Rule 10b5-1 trading plan adopted on October 6, 2025.

Significance Assessment

• Trading Significance: Low.
• The transactions represent scheduled sales under a Rule 10b5-1 plan, largely funded by an option exercise (right to buy at $4.38). The insider maintains a substantial indirect stake of over 815,000 Class B shares through family trusts.