Form 4: Magnite Insider Sells Shares Under 10b5-1 Plan

Sean Patrick Buckley of Magnite, Inc. reported the sale of 19,233 shares of common stock, executed under a pre-arranged 10b5-1 trading plan.

Summary

• Sean Patrick Buckley, an officer of Magnite, Inc., reported a transaction involving common stock.
• The transaction, dated July 7, 2026, involved the sale of 19,233 shares.
• These shares were sold under a Rule 10b5-1 trading plan adopted on September 10, 2025.
• The sale was executed at a weighted average price of $21.03, with individual sales ranging from $21.00 to $21.16.
• Following the transaction, Buckley beneficially owns 354,281 shares of common stock.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral filing, as the reported transaction is a routine sale under a pre-established 10b5-1 plan, which is standard practice for insiders.

Negatives

• Insider selling can sometimes be interpreted negatively by the market, though this sale was conducted under a pre-established trading plan.

Future Outlook

No specific future outlook or guidance is provided in this Form 4 filing, as it solely reports a past transaction.

Industry Context

StockSavvy.ai notes that insider sales under Rule 10b5-1 plans are common for executives to diversify holdings or manage personal finances, and are generally viewed as less indicative of negative company outlook compared to un-planned sales.

Stakeholder Impact

• Shareholders: The sale of shares by an insider may be observed, but the execution under a 10b5-1 plan mitigates concerns about insider knowledge. The remaining beneficial ownership indicates continued investment by the executive.

Key Dates

Keywords

Magnite, MGNI, Form 4, Insider Trading, 10b5-1 Plan, Stock Sale, Beneficial Ownership