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. (MGNI) Chief Technology Officer David Buonasera reported a sale of 1,165 shares of common stock on September 14, 2026 at $24.00 per share, in an open-market or private transaction. Following this sale, he directly holds 245,155 shares of MAGNITE common stock. The transaction was effected pursuant to a Rule 10b5-1 trading plan adopted on June 13, 2026.
MAGNITE, INC. (MGNI) director Robert F. Spillane exercised stock options for 10,363 shares of common stock on September 14, 2026 at an exercise price of $5.17 per share, then sold 10,363 shares of common stock the same day at a weighted average price of $23.76 per share. The options were fully vested and granted as compensation, and this exercise left no shares remaining under that option award.
MAGNITE, INC. (MGNI) director Robert Spillane has filed a Rule 144 notice for a potential sale of common stock. The notice covers 10,363 shares of Magnite common stock to be sold through Morgan Stanley Smith Barney LLC following a stock option exercise for cash, with an indicated aggregate market value of $246,241.46. The shares are listed on NASDAQ and the intended sale date stated is September 14, 2026.
MAGNITE, INC. (MGNI) is the issuer for which officer David Buonasera has filed a Form 144 notice to sell common stock. The notice covers 1,165 shares of common stock, to be sold through Morgan Stanley Smith Barney LLC, with an aggregate market value of $27,692.05 on NASDAQ.
The securities to be sold arise from Restricted Stock Units that became available on August 15, 2026. The filing also lists a series of past open-market sales of MAGNITE common stock by Buonasera over the prior three months, with individual transactions ranging from about 1,000 to over 11,000 shares.
MAGNITE, INC. (MGNI) executive Katie Seitz Evans, President, Product & Operations, reported selling 13,997 shares of common stock on September 11, 2026 at $24.00 per share in an open-market or private transaction. After this sale, she directly holds 441,800 shares of Magnite common stock. The transaction was effected under a Rule 10b5-1 trading plan adopted on June 8, 2026.
MAGNITE, INC. (MGNI) reported that Chief Legal Officer Aaron Salt sold 40,000 shares of common stock on September 10, 2026 in an open-market transaction at a weighted average price of $23.41 per share. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted on June 11, 2026, and Salt now directly holds 224,389 shares of Magnite common stock.
MAGNITE, INC. (MGNI) director Paul Caine reported selling 5,000 shares of common stock on September 10, 2026 in an open-market transaction at a weighted average price of $23.53 per share, under a Rule 10b5-1 trading plan adopted on August 20, 2025. After this sale, he directly holds 144,901 shares of MAGNITE common stock. The shares were sold in multiple trades at prices between $23.22 and $23.63 per share.
MAGNITE, INC. (MGNI) received a Rule 144 notice that officer Katheryn Evans plans to sell 13,997 shares of common stock, with an indicated aggregate market value of $335,928.00. The notice states that 143,424,157 shares of MAGNITE common stock were outstanding as of September 11, 2026.
MAGNITE, INC. (MGNI) reported that President, Product & Operations Katie Seitz Evans exercised employee stock options for 13,546 shares of common stock at $5.16 per share on September 8, 2026, then sold 32,285 shares that day at a weighted average price of $23.63, and sold an additional 11,100 shares on September 9, 2026 at a weighted average price of $23.46. All reported trades were made under a Rule 10b5-1 trading plan adopted on June 8, 2026.
MAGNITE, INC. (MGNI) is the issuer for a planned sale of common stock by director Paul Caine under Rule 144. The notice covers up to 10,000 shares of common stock, with an aggregate market value of $235,800.00, to be sold through Morgan Stanley Smith Barney LLC on NASDAQ.
The shares relate to Restricted Stock Units originally dated June 1, 2017 and issued by Magnite. The filing also lists prior Rule 10b5-1 sales by Paul Caine over the past three months, each involving Magnite common stock.