Form 4: Rubrik Director Sells Shares Under 10b5-1 Plan

Rubrik Director John Wendell Thompson reported the sale of Class A Common Stock totaling 9,009 shares through a pre-arranged 10b5-1 trading plan.

Summary

• John Wendell Thompson, a Director of Rubrik, Inc. (RBRK), reported transactions on November 3, 2025.
• Transactions included the acquisition of 9,009 Class A Common Stock at $0 and 9,009 Class B Common Stock.
• A total of 9,009 Class A Common Stock were sold in multiple transactions at weighted average prices ranging from $74.43 to $76.21 per share.
• These sales were executed pursuant to a Rule 10b5-1 trading plan adopted on October 15, 2024.
• Following these transactions, Thompson indirectly holds 8,901 Class A Common Stock and 854,347 Class B Common Stock through the John and Sandra Thompson Trust, and directly holds 24,999 Class B Common Stock.

Sentiment

Score: 5

Explanation: Neutral. While insider selling can be perceived negatively, the execution under a pre-arranged 10b5-1 plan mitigates the immediate negative signal, suggesting a planned liquidity event rather than a reaction to new adverse information.

Positives

• The transactions were executed under a pre-arranged Rule 10b5-1 trading plan, indicating a planned liquidity event rather than a reaction to immediate company news.

Negatives

• A director selling a significant number of shares (9,009 Class A Common Stock) could be perceived negatively by some investors, even if pre-planned.

Risks

• No specific operational or financial risks for Rubrik, Inc. are detailed in this insider transaction report.

Future Outlook

NA

Industry Context

This filing is a standard insider transaction report and does not provide information relevant to broader industry trends or competitive analysis.

Related Party Transactions

• The shares are held of record by the John and Sandra Thompson Trust, for which the Reporting Person serves as a co-trustee and shares voting and dispositive power with his spouse.

Stakeholder Impact

• Shareholders: May interpret the director's sale as a signal, though the impact is mitigated by the pre-arranged 10b5-1 plan.

Key Dates

Recommendation

The filing reports a director's sale of shares under a pre-arranged 10b5-1 plan. While insider selling can sometimes be a negative signal, the pre-planned nature suggests it's for personal financial management rather than a reaction to new adverse company information. Without additional context on company performance or valuation, a 'hold' recommendation is appropriate, as this transaction alone does not provide a strong buy or sell signal.

Keywords

Rubrik, RBRK, Insider Trading, Form 4, Director, Stock Sale, 10b5-1 Plan, John Wendell Thompson, Class A Common Stock, Class B Common Stock