Welcome to our dedicated page for MAGNITE SEC filings (Ticker: MGNI), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Magnite, Inc. filings document the regulatory record of an operating ad technology company focused on sell-side programmatic advertising. Form 8-K reports furnish quarterly and annual results, including revenue, contribution ex-TAC, CTV and DV+ metrics, adjusted EBITDA, cash flow measures, outlook commentary and stock buyback disclosures.
The company’s proxy materials cover annual meeting matters, director elections, executive compensation and stockholder voting procedures. Other filings document executive transitions, material agreements, Regulation FD disclosures and risk-factor updates, including litigation and competitive risks tied to the digital advertising ecosystem.
MAGNITE, INC. director Rachel Lam reported a sale of 10,000 shares of common stock on 2026-08-10 in a non-derivative transaction. The sale was executed at a weighted average price of $24.16 per share, with individual trades ranging from $24.11 to $24.20. Following this sale, Lam directly holds 230,620 shares of MAGNITE common stock.
MAGNITE, INC. director Paul Caine reported selling 5,000 shares of common stock on August 10, 2026 in an open-market transaction. The sale was executed under a Rule 10b5-1 trading plan adopted on August 20, 2025. The weighted average sale price was $24.35 per share, with individual trades executed between $24.07 and $24.91. Following this transaction, Caine directly holds 157,401 shares of MAGNITE common stock.
A holder of MGNI common stock filed to sell 10,000 shares through Morgan Stanley Smith Barney LLC Executive Financial Services on NASDAQ. The planned sale, valued at approximately $241,572.00, is listed with an expected sale date of 08/10/2026.
The shares relate to restricted stock that vested under a registered plan for services rendered, including 6,564 shares vesting on 06/05/2025 and 3,436 shares vesting on 06/28/2021.
A shareholder of MGNI filed to potentially sell common stock under a resale notice. The filing covers 12,479 common shares to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services, with an aggregate market value of $308,024.15 and a noted sale date of 08/10/2026 on NASDAQ. The shares relate to multiple tranches of restricted stock originally from issuer grants dated between August 2025 and May 2026.
MAGNITE, INC. executive Sean Patrick Buckley, President, Revenue & Market Strategy, exercised 28,703 stock options at $13.90 per share on August 6, 2026, acquiring the same number of common shares, then sold 67,179 shares at prices from $23.00 to $25.09. Following the exercise, 57,405 stock options remain outstanding and are fully vested and immediately exercisable. All reported transactions were effected under a Rule 10b5-1 trading plan adopted on September 10, 2025.
MAGNITE, INC. director Douglas S. Knopper sold 37,337 shares of common stock on August 6, 2026 at $22.72 per share. The sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on December 12, 2025, and he now directly owns 88,473 shares.
MAGNITE, INC. Chief Technology Officer David Buonasera reported selling 7,649 shares of common stock on August 6, 2026 in three open-market transactions under a Rule 10b5-1 trading plan adopted on September 11, 2025. Sale prices ranged from $22.72 to $25.00 per share.
Magnite, Inc. executive Katie Seitz Evans, President, Product & Operations, exercised employee stock options for 20,000 shares of common stock at an exercise price of $5.1600 per share on August 6, 2026, then sold 20,000 shares at $24.0000 per share. The options were fully vested, granted as compensation, and the exercise and sale were made under a Rule 10b5-1 trading plan adopted on August 28, 2025.
Magnite, Inc. CEO Michael G. Barrett exercised stock options covering 293,968 shares of common stock at an exercise price of $5.80 per share and sold the same number of shares at $22.72 per share on August 6, 2026. The options were granted as compensation, were fully vested and immediately exercisable, and were due to expire on March 17, 2027. The exercise and subsequent sale were carried out under a Rule 10b5-1 trading plan adopted on March 13, 2026.
Sean Buckley, a shareholder of MGNI, filed a notice to potentially sell common stock through Morgan Stanley Smith Barney LLC. The planned sales include 28,703 shares to be issued upon the exercise of stock options dated 08/06/2026 and 38,476 shares from RSU & PSA awards dated 11/15/2023. The filing also reports prior Rule 10b5-1 plan sales of 19,233 shares of common stock on both 06/17/2026 and 07/07/2026, for proceeds of $365,427.00 and $404,553.78, respectively.