Form 4: Magnite CEO Michael Barrett Sells 300,000 Shares Under Pre-Arranged Trading Plan

Magnite, Inc. CEO Michael G. Barrett sold 300,000 shares of common stock for approximately $6 million on June 24, 2025, as part of a pre-arranged Rule 10b5-1 trading plan.

Summary

• Michael G. Barrett, CEO and Director of Magnite, Inc. (MGNI), reported the sale of 300,000 shares of common stock.
• The transaction occurred on June 24, 2025.
• The shares were sold at a weighted average price of $20.01 per share, totaling approximately $6,003,000.
• The sales were executed under a Rule 10b5-1 trading plan, which was adopted by Mr. Barrett on March 12, 2025.
• The shares were sold in multiple transactions within a price range of $20.00 to $20.0532.
• Following these transactions, Mr. Barrett beneficially owns 356,708 shares of Magnite common stock.

Sentiment

Score: 4

Explanation: A CEO selling a significant portion of their holdings, even under a 10b5-1 plan, generally carries a negative sentiment as it can be interpreted as a lack of strong conviction in the company's near-term growth or valuation, though the pre-planned nature mitigates the severity compared to an unplanned sale.

Positives

• The sale was conducted under a Rule 10b5-1 trading plan, indicating it was pre-planned and not a reaction to recent negative developments, which can mitigate concerns about insider confidence.

Negatives

• The CEO sold a significant number of shares (300,000), which can be interpreted by investors as a reduction in confidence in the company's future prospects, despite the 10b5-1 plan.
• The sale represents a reduction in the CEO's direct beneficial ownership.

Risks

• Investor perception risk: The sale by a key executive, even under a 10b5-1 plan, might be perceived negatively by the market, potentially leading to downward pressure on the stock price.

Future Outlook

The document, a Form 4, does not provide any forward-looking statements or guidance regarding the company's future performance or outlook.

Industry Context

This Form 4 filing reports an individual insider transaction and does not provide information relevant to broader industry trends or competitive analysis within the ad-tech or programmatic advertising sector.

Stakeholder Impact

• Shareholders may interpret the CEO's sale of shares as a signal of reduced confidence, potentially influencing their investment decisions and the company's stock price.

Next Steps

• The Reporting Person undertakes to provide full information regarding the number of shares sold at each separate price within the reported range upon request to the Issuer, any security holder, or the SEC staff.

Key Dates

Recommendation

Keywords

Magnite, MGNI, Michael G. Barrett, CEO, Director, Form 4, SEC filing, insider trading, stock sale, Rule 10b5-1 plan, common stock, beneficial ownership