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. chief financial officer David Day reported a bona fide gift of 26,258 shares of Common Stock on August 13, 2026. The gift was recorded at $0.00 per share. Following this disposition, Day directly holds 467,031 shares of Common Stock. The transaction was not marked as being made under a Rule 10b5-1 trading plan.
Wellington Management Group LLP, together with Wellington Group Holdings LLP and Wellington Investment Advisors Holdings LLP, reports beneficial ownership of 6,044,492 shares of Magnite, Inc. common stock, representing 4.22% of the class. These shares are held of record by clients of various Wellington investment advisers. The group reports 0 shares with sole voting or dispositive power, 3,568,479 shares with shared voting power, and 6,044,492 shares with shared dispositive power. The filing notes that no single client is known to hold more than five percent of this class.
Magnite, Inc. officer Brian Gephart, the Chief Accounting Officer, reported a sale of common stock. On 2026-08-10, he sold 12,479 shares of Magnite common stock in an open market or private transaction at a weighted average price of $24.68 per share, with actual prices ranging from $24.68 to $24.71. Following this transaction, he directly holds 106,117 shares of Magnite common stock.
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.