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

Rubrik Director John Wendell Thompson reported the sale of Class A Common Stock under a pre-arranged 10b5-1 trading plan.

Summary

• John Wendell Thompson, a Director at Rubrik, Inc., reported transactions involving Class A Common Stock on April 1, 2026.
• These transactions were executed under a Rule 10b5-1 trading plan adopted on October 6, 2025.
• The filing details the sale of various amounts of Class A Common Stock at weighted average prices ranging from $47.90 to $49.64.
• Thompson also reported the acquisition of 11,000 shares of Class A Common Stock through the exercise of stock options.
• Beneficial ownership of certain shares is held indirectly through the John and Sandra Thompson Trust.

Sentiment

Score: 4

Explanation: StockSavvy.ai views this as a slightly negative sentiment due to significant insider selling, although the use of a 10b5-1 plan mitigates concerns about immediate negative outlook.

Positives

• The transactions were conducted under a Rule 10b5-1 plan, indicating pre-planned and potentially non-insider trading related sales.
• The exercise of stock options suggests that the reporting person is realizing value from equity compensation, which can be a positive sign of company performance or stock value appreciation.

Negatives

• A significant number of shares were sold by a company director, which could be interpreted negatively by the market.
• The sales occurred at prices below the current market value, as indicated by the weighted average prices reported.

Risks

• The sale of a substantial number of shares by a director could signal a lack of confidence in future stock performance, although this is mitigated by the 10b5-1 plan.
• The weighted average sale prices indicate that the shares were sold at a discount to the highest price reported in the transactions.

Future Outlook

No specific forward-looking statements or guidance were provided in this Form 4 filing, which primarily reports past transactions.

Management Comments

• The reporting person undertakes to provide full information regarding the number of shares sold at each separated price within the range set forth in the footnotes, upon request.
• 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.

Industry Context

StockSavvy.ai notes that insider selling, even under a 10b5-1 plan, is a common event for executives and directors as they diversify their holdings or manage personal finances. However, the volume and timing relative to company news can influence market perception.

Related Party Transactions

• 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.

Stakeholder Impact

• Shareholders may view the director's sale of stock with caution, potentially impacting short-term share price sentiment.
• The transactions do not appear to directly impact employees, customers, suppliers, or creditors based on the information provided.

Next Steps

• The reporting person may continue to execute transactions under the Rule 10b5-1 trading plan.
• The company may provide further updates on executive compensation and stock transactions in future filings.

Key Dates

Recommendation

The filing indicates a director is selling shares under a pre-arranged plan, which is a common practice for diversification. While insider selling can be a negative signal, the 10b5-1 plan suggests it's not necessarily a reflection of immediate negative company outlook. Therefore, a 'hold' recommendation is appropriate pending further company performance data.

Keywords

Rubrik, RBRK, Form 4, Insider Trading, 10b5-1 Plan, Stock Sale, Director Transactions, Class A Common Stock, Stock Options