Buckley Sean Patrick

MGNI President of Revenue sells 40,000 shares for $1,003,400.00 across two days at $25.56–$24.61

Sean Patrick Buckley, President of Revenue at Magnite, executed 2 separate sales totaling 40,000 shares for $1,003,400.00 on September 8–9, 2025, at prices ($25.56 and $24.61) near the stock's 52-week high of $26.52. His post-transaction holdings of 287,193 shares represent a -12.2% reduction. Buckley's prior MGNI sales on 2024-07-15 and 2024-07-16 both showed negative 90-day returns (-13.7% and -20.0%), establishing a pattern where his exits at this ticker preceded declines. The current stock price of $23.89 is now -9.9% from the 52-week high, consistent with post-sale weakness seen in his prior trades. Given his title in revenue operations and the company's modest 7.8% annual revenue growth, the timing and scale of this sale warrant investor attention to whether fundamentals are signaling headwinds the market has not yet priced.

MGNI Chief Revenue Officer Buckley sells 39,211 shares across 2 transactions for $588,163.50 (blended $15.00/share); holds 344,011 shares post-sale

Sean Patrick Buckley, Chief Revenue Officer, executed 2 separate sales totaling 39,211 shares for $588,163.50 on July 15–16, 2024, reducing his stake by 10.2% to 344,011 shares. The transactions were priced at $14.50 and $15.50 per share, near the current price of $14.79 and within the 52-week range of $6.51–$15.84. Magnite is unprofitable on a full-year basis (net income of $-17.8M) despite 7.4% annual revenue growth, and the stock has climbed 71.2% over 90 days—a period that includes the sale dates. The CRO's sale at prices near recent highs, following substantial recent appreciation and amid ongoing operating losses, occurs in the context of company unprofitability and warrants review of any concurrent earnings or operational disclosures.