Form 4: Director Yvonne Wassenaar Executes Rubrik Stock Sale

Rubrik, Inc. Director Yvonne Wassenaar sold 2,838 shares of Class A Common Stock following a conversion from Class B shares.

Summary

• Director Yvonne Wassenaar converted 2,163 shares of Class B Common Stock into Class A Common Stock on May 29, 2026.
• Following the conversion, the director sold 2,838 shares of Class A Common Stock at a price of $75.00 per share.
• The transaction was executed pursuant to a Rule 10b5-1 trading plan adopted on December 15, 2025.
• The director's remaining beneficial ownership of Class A Common Stock stands at 2,326 shares.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event, as the transaction was pre-planned and represents a standard exercise of equity compensation.

Positives

• The sale was conducted under a pre-established Rule 10b5-1 trading plan, which is a standard mechanism for insiders to sell stock without triggering concerns regarding non-public information.

Negatives

• The transaction represents a reduction in the director's direct equity stake in the company.

Risks

• Future sales by insiders may occur as part of the established 10b5-1 trading plan, which could influence market sentiment.

Future Outlook

No specific forward-looking guidance regarding company operations was provided in this filing.

Industry Context

StockSavvy.ai notes that insider selling via 10b5-1 plans is a routine corporate governance practice in the technology sector, often used by executives and directors to manage personal liquidity without signaling a lack of confidence in the company's long-term prospects.

Comparison to Industry Standards

• The use of Rule 10b5-1 plans is consistent with standard practices for directors at publicly traded software and cybersecurity firms like CrowdStrike or Palo Alto Networks.

Stakeholder Impact

• Minimal impact on shareholders as the sale was executed through a pre-planned trading arrangement.

Next Steps

• Continued monitoring of future Form 4 filings to track any further sales under the existing 10b5-1 plan.

Key Dates

Keywords

Rubrik, RBRK, Insider Trading, Form 4, Director Sale, Equity Compensation