4/A: Nebius Group CIO Executes Stock Option Exercise and Sale

Nebius Group Chief Infrastructure Officer Andrey Korolenko exercised 500,000 stock options and sold the resulting shares.

Summary

• Chief Infrastructure Officer Andrey Korolenko exercised 500,000 stock options at a strike price of $100 per share.
• Following the exercise, the reporting person sold 500,000 Class A shares at a price of $203.24 per share.
• The transactions were executed pursuant to a Rule 10b5-1 trading plan adopted on December 2, 2025.
• Post-transaction, the reporting person retains beneficial ownership of 585,209 Class A shares and 1,500,000 stock options.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event; while it is a large sale, it was executed through a pre-arranged 10b5-1 plan, which is a standard mechanism for executive financial planning.

Positives

• The transaction was pre-planned under a Rule 10b5-1 trading plan, indicating the sale was not based on sudden non-public information.

Negatives

• The sale of 500,000 shares by a key executive represents a significant reduction in direct equity holdings.

Risks

• Insider selling can sometimes be perceived negatively by the market as a signal of management's view on current valuation.

Future Outlook

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

Management Comments

• The filing notes that the transactions were made pursuant to a Rule 10b5-1 trading plan.

Industry Context

StockSavvy.ai notes that executive stock sales under 10b5-1 plans are standard practice for liquidity and diversification, and are generally viewed as neutral events unless they represent a total exit from equity positions.

Comparison to Industry Standards

• The use of Rule 10b5-1 plans is the industry standard for corporate insiders to manage equity holdings while avoiding potential insider trading allegations.

Stakeholder Impact

• Shareholders should note the reduction in the CIO's direct equity stake, though the pre-planned nature mitigates concerns regarding insider sentiment.

Next Steps

• Continued monitoring of future Form 4 filings for further insider activity.

Key Dates

Keywords

Nebius Group, NBIS, Insider Trading, Form 4, Stock Options, Andrey Korolenko