Michael G. Barrett

CEO Michael G. Barrett sells 278,596 shares ($4.7M) at $16.92 avg; retains 403,074 shares plus 915,128 options.

Michael G. Barrett executed 2 separate sales totaling 278,596 shares for $4,712,907.64 on 2026-06-15 and 2026-06-16, reducing his non-derivative holdings by -40.9%. This transaction is part of a pre-arranged 10b5-1 trading plan adopted on 2026-03-13, meaning the sales were scheduled rather than discretionary. Barrett retains 403,074 non-derivative shares and holds 915,128 shares through derivative securities (two separate employee stock option grants), so his overall economic exposure to MGNI remains substantial. At the current price of $18.24, the stock has appreciated 36.2% in the 30-day window and 46.0% in the 90-day window following these scheduled transactions. His prior trades at MGNI have shown variable outcomes, with three of five prior sales followed by 30-day gains (14.7%, 28.8%, 35.4%) and most followed by 90-day gains, though two sales were followed by declines (-40.7%, -24.8%). The company reports recent quarterly revenue of $164,371,000.00, net income of $4,412,000.00, and a P/E of 16.43, reflecting profitable operations at a valuation below the 52-week high of $26.65.

MGNI CEO sold 35,951 shares at $23.85 for $857.4K; stock now $21.84, -11.5% from 52-week high. Prior timing mixed.

Michael G. Barrett, CEO of Magnite, sold 35,951 shares at $23.85 on 2025-08-18, reducing his post-transaction holdings to 249.9K shares (-12.6% of prior position). At the current price of $21.84, the stock has fallen 10.6% in 30 days and is trading -11.5% below its 52-week high of $24.67. Examining his same-ticker history at MGNI, four of five prior measurable 30-day outcomes following his sells were positive (ranging +1.4% to +35.4%), but his only completed 90-day outcome (the 2024-12-04 sale) resulted in a -16.4% decline—one of one well-timed at the 90-day mark. His cross-ticker track record shows 13 prior sells with an average 30-day return of +10.7% and 90-day return of +5.1%, with a well-timed rate of 44.44%, indicating his sells have historically preceded declines less than half the time. The current 30-day deterioration in MGNI aligns with his recent pattern at this ticker, but the stock's elevated valuation (P/E of 72.80) and modest annual revenue growth of +7.8% provide context for elevated exit activity.

CEO Michael G. Barrett sells 70,900 MGNI shares at $23.27; holdings fall to 285,808 shares (-19.9%)

CEO Michael G. Barrett sold 70,900 shares of MAGNITE at $23.27 on 2025-07-15, reducing his holdings by 19.9% to 285,808 shares post-transaction. The sale occurred against a backdrop of strong recent stock momentum—MGNI has risen 33.1% in the past 30 days and 118.1% over 90 days, trading just 1.6% below its 52-week high of $24.67. However, the company faces fundamental headwinds: net income is negative at $-9.6M on revenue of $155.8M, and the stock carries a P/E ratio of 110.32, indicating significant valuation premium. Barrett's cross-ticker trading history shows a mixed pattern (44.44% well-timed sell rate across all holdings), while his five prior trades at MGNI show only 1 of 2 measurable 90-day outcomes was well-timed (sell on 2024-12-04 generated a -16.4% return, correctly anticipating a decline). The concentration of sales activity in June 2025 (three sales in nine days: June 16, 18, and 24) followed by this July transaction, combined with substantial position reduction, warrants monitoring for what may indicate shifting views on valuation or execution.

CEO BARRETT MICHAEL G. sold 300,000 shares of MGNI at $20.01; holds 356,708 shares post-sale (-45.7%)

CEO Barrett Michael G. executed a substantial sale of 300,000 shares (45.7% of his pre-transaction holdings) at $20.01, reducing his stake to 356,708 shares. This represents a significant reduction in his equity position at a price near the 52-week high of $21.17, at a time when the stock has already appreciated 30.2% over 30 days and 80.8% over 90 days. His cross-ticker track record shows a 90-day well-timed sell rate of 44.44%, but at MGNI specifically, only 1 of 3 prior measurable sales (33.3%) were well-timed at the 90-day mark, with 2 prior sales occurring just 6 and 8 days before this transaction on 2025-06-18 and 2025-06-16. Investors should note the compressed timing of these three consecutive sales in a 10-day window and the fundamentals backdrop: the company is unprofitable (net income of $-9,634,000 in the latest quarter), carries a high P/E of 95.32, and has modest annual revenue growth of 7.8%, warranting assessment of whether the recent 80.8% gain has created a valuation inflection point.

CEO Barrett Michael G. sells 75,000 MGNI shares across 2 trades for $1,369,200 at $17.76–$19.00; holds 656.7K post-sale

CEO Michael Barrett executed 2 separate sales totaling 75,000 shares for $1,369,200.00 on 2025-06-16 and 2025-06-18, reducing his holdings by 10.2% to 656,708 shares. The sales occurred at $17.76 and $19.00 respectively, well below the 52-week high of $21.17 and only modestly above the current price of $18.82, despite the stock being up 40.3% over 90 days. Across his same-ticker history at MGNI, Barrett's 5 prior sells show mixed timing: 2 of 5 achieved negative 90-day returns (well-timed), while 3 generated positive returns (poorly timed). The current sale's execution—across two separate price points within two days—occurred during a strong 30-day rally (+22.8%), distinguishing it from the pattern of opportunistic selling during momentum that characterized his cross-ticker track record (44.44% well-timed rate). Company fundamentals show $155,771,000.00 in latest quarterly revenue with a $-9,634,000.00 net loss and elevated 85.55 P/E ratio, providing backdrop for insider monetization activity.

CEO Michael G. Barrett sold 147,996 shares of MGNI at $17.52; current price $18.00 at 52-week high, while P/E trades at 150.00.

CEO Michael G. Barrett sold 147,996 (148.0K shares) at $17.52 on 2024-12-04, reducing his holdings by -18.9% from 782.9K to 634.9K shares. The sale occurred near the company's 52-week high of $18.00, and the stock has appreciated +36.4% over 30 days and +37.2% over 90 days. However, his prior trades at MGNI show mixed timing outcomes—only 1 of 4 prior measurable sells resulted in negative 90-day returns (well-timed), while others saw the stock rise after the sale, including a +33.0% gain 90 days after his 2024-08-15 sale. The company's fundamentals present a valuation concern: it trades at a P/E of 150.00 on annual revenue growth of +7.4%, yet was unprofitable over its most recent full fiscal year, raising questions about the sustainability of the elevated valuation at which the sale occurred.

CEO Barrett sells 100,000 MGNI shares at $16.14; stock up 32.6% in 30 days, P/E at 135.50.

CEO Michael G. Barrett sold 100,000 shares (100.0K shares) of MAGNITE, INC. (MGNI) at $16.14 on 2024-11-15, reducing his holdings from 909,914 shares to 809,914 shares (-11.0% of pre-transaction holdings). The sale occurs after a sharp 30-day rally of +32.6% and represents a reduction in his stake following a significant recovery from the 52-week low of $7.64. At the transaction price of $16.14, the stock was -3.2% from its 52-week high of $16.80. His cross-ticker track record shows a 42.86% well-timed rate on prior sells with an average 90-day post-sell return of 6.0%, while his prior five MGNI-specific trades show only 1 of 5 well-timed at the 90-day mark—a pattern reflecting mixed timing accuracy at this ticker. The company trades at an elevated P/E of 135.50 despite full-year net income being negative, though the latest quarter showed a net income of $5,214,000.00, signaling recent operational improvement within a structurally challenged valuation profile.

MGNI CEO sold 75,000 shares at $12.63; stock down 20.8% from 52-week high, company unprofitable

Michael Barrett, as CEO, sold 75,000 shares (75.0K shares) of MAGNITE, INC. (MGNI) at $12.63 on 2024-08-15, leaving him with 944,552 shares (944.6K shares). The sale occurs in a weakened context: the stock is -20.8% from its 52-week high and down 15.2% over the preceding 30 days, and MAGNITE reported a net loss of $-1.1M on revenue of $162.9M in its latest quarter. Examining his recent trading pattern at MGNI specifically, Barrett sold on 2024-07-15 (which subsequently declined 16.5% over 30 days), then earlier sales show mixed timing outcomes at the 90-day horizon (1 of 4 prior MGNI sells were well-timed). His cross-ticker track record shows a 40.00% well-timed rate across six prior sales, indicating modest predictive timing ability. The transaction occurred during a period of stock weakness and persistent company losses, but without scheduling information or additional context, the motivation remains ambiguous.

CEO Michael Barrett sells 100,000 MGNI shares at $15.00 (1.5M); stock -6.6% from 52-week high, company unprofitable.

Michael G. Barrett, CEO of Magnite, sold 100,000 shares at $15.00 on 2024-07-15, reducing his holdings by 8.7% to 1,052,493 shares. The sale occurred near the 52-week high ($15.84), with the stock currently at $14.79 (-6.6% from peak). Magnite reported a net loss of $-17,757,000 in its latest quarter on revenue of $149,319,000, with the company unprofitable over its most recent full fiscal year. Among his prior 5 MGNI sales, Barrett's 90-day timing success was mixed: 2 of 4 measurable outcomes were well-timed (stock fell after the sale), while 2 were poorly timed. This sale's significance is elevated by the timing proximity to the 52-week high and the company's persistent unprofitability, though the lack of measurable post-transaction outcomes prevents definitive assessment of pattern continuation.