Form 4: Rubrik Director Sells $746K in Class A Stock

Rubrik Director John Wendell Thompson sold 9,009 shares of Class A Common Stock for approximately $746,000 through a pre-arranged Rule 10b5-1 plan.

Summary

• John Wendell Thompson, a Director of Rubrik, Inc. (RBRK), reported transactions involving the company's stock.
• On October 1, 2025, 9,009 shares of Class B Common Stock held indirectly by the John and Sandra Thompson Trust were converted into 9,009 shares of Class A Common Stock.
• Concurrently, 9,009 shares of Class A Common Stock were sold from the John and Sandra Thompson Trust.
• The sales were executed under a Rule 10b5-1 trading plan adopted on October 15, 2024.
• The sales occurred at weighted average prices of $82.27 (3,551 shares), $83.07 (5,358 shares), and $83.77 (100 shares).
• The total proceeds from these sales amount to approximately $745,826.
• Following these transactions, John Wendell Thompson beneficially owns 2,702 shares of Class A Common Stock directly and 998 shares indirectly through the trust.
• The trust also holds 863,356 shares of Class B Common Stock indirectly, and Thompson holds 24,999 shares of Class B Common Stock directly.

Sentiment

Score: 5

Explanation: The sentiment is neutral. While insider selling can sometimes be viewed negatively, the transaction was pre-planned under a Rule 10b5-1 plan, which mitigates concerns about opportunistic selling based on undisclosed negative information. It represents a routine liquidity event for a director.

Positives

• The sales were conducted under a pre-arranged Rule 10b5-1 trading plan, indicating a planned transaction rather than an immediate reaction to new, undisclosed information.

Negatives

• A director selling a significant number of shares (9,009 shares) could be perceived negatively by the market, potentially signaling a lack of confidence, although the 10b5-1 plan mitigates this concern.

Future Outlook

This Form 4 filing does not contain any forward-looking statements or guidance.

Management Comments

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

Industry Context

Insider selling, even when pre-planned, is a common occurrence in the technology sector, particularly for directors and executives who often receive significant equity compensation. The sale of Class A shares following conversion from Class B is a typical liquidity event for insiders in companies with dual-class stock structures like Rubrik, Inc.

Comparison to Industry Standards

• This filing reports a standard insider transaction (conversion and sale) executed under a Rule 10b5-1 plan, which is a common practice among executives and directors across various industries to manage personal finances while adhering to insider trading regulations. No specific comparable companies or projects are mentioned in the filing to allow for a direct comparison of results.

Stakeholder Impact

• Shareholders: May interpret the director's sale as a slight negative signal, though the 10b5-1 plan reduces this concern. The overall impact on the company's operations or strategic direction is negligible.

Key Dates

Recommendation

The filing reports a routine insider stock sale executed under a pre-arranged Rule 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, undisclosed negative company information. The director retains significant holdings. Therefore, this specific transaction alone does not warrant a change in investment thesis, leading to a 'hold' recommendation.

Keywords

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