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

Rubrik's Chief Technology Officer, Arvind Nithrakashyap, sold 5,693 shares of Class A Common Stock in two transactions under a pre-arranged 10b5-1 trading plan.

Summary

• Arvind Nithrakashyap, Rubrik's Chief Technology Officer and a Director, sold a total of 5,693 shares of Class A Common Stock.
• The sales occurred on January 14, 2026, and January 15, 2026.
• On January 14, 2026, 1,045 shares were sold at a weighted average price of $70.05 per share, with prices ranging from $70.02 to $70.175.
• On January 15, 2026, 4,648 shares were sold at a weighted average price of $70.40 per share, with prices ranging from $70.01 to $70.705.
• These transactions were executed pursuant to a Rule 10b5-1 trading plan adopted on October 15, 2025.
• Following these sales, Nithrakashyap beneficially owns 337,010 shares of Class A Common Stock directly.

Sentiment

Score: 5

Explanation: A neutral score. Insider sales under a 10b5-1 plan are routine and generally do not signal a significant positive or negative shift in company fundamentals or management's outlook. The transaction is pre-scheduled and for personal financial management.

Positives

• The sales were conducted under a Rule 10b5-1 trading plan, indicating a pre-scheduled transaction rather than an immediate reaction to new, material non-public information.

Negatives

• An insider sale, even if pre-planned, can sometimes be perceived negatively by the market as it reduces the insider's direct equity stake.

Future Outlook

The filing does not contain any forward-looking statements or guidance.

Industry Context

Insider sales under 10b5-1 plans are common practice for executives to manage personal finances and diversify holdings without being accused of trading on material non-public information. These sales are generally not indicative of a change in the company's fundamental outlook or the executive's confidence in the long-term prospects, especially when part of a pre-scheduled plan.

Comparison to Industry Standards

• These types of insider transactions are standard practice across publicly traded companies, particularly for senior executives who often receive a significant portion of their compensation in equity.
• The use of a Rule 10b5-1 plan aligns with best practices for corporate governance, providing a structured approach to insider trading that mitigates concerns about opportunistic selling.
• Comparable companies in the software and cloud security sector, such as CrowdStrike (CRWD), Palo Alto Networks (PANW), and Zscaler (ZS), frequently report similar insider sales under 10b5-1 plans by their executives.

Stakeholder Impact

• Shareholders: The sale slightly reduces the direct ownership stake of a key executive, which could be viewed neutrally or slightly negatively by some, though it's a common practice under a 10b5-1 plan.

Key Dates

Recommendation

The Form 4 filing reports a routine insider sale by Rubrik's CTO under a pre-established 10b5-1 trading plan. Such transactions are typically for personal financial management and diversification and do not inherently signal a change in the company's fundamental prospects or the executive's long-term confidence. Therefore, this specific filing alone does not provide sufficient new information to warrant a change from a 'hold' recommendation, assuming the investor's existing thesis on Rubrik remains intact.

Keywords

Rubrik, RBRK, Insider Sale, Form 4, Arvind Nithrakashyap, Chief Technology Officer, 10b5-1 Plan, Stock Transaction, Equity Sales