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) received a Rule 144 notice from officer Aaron Saltz covering a proposed sale of 60,000 shares of common stock through Morgan Stanley Smith Barney LLC Executive Financial Services. The shares have an indicated aggregate market value of $1,414,800.00 and are listed for sale on NASDAQ around September 10, 2026.
The 60,000 shares consist of 22,257 shares acquired from previously exercised stock options on September 8, 2021 and 37,743 shares acquired from restricted stock units on April 1, 2021. As context, common shares outstanding were 143,424,157, a baseline figure, not the amount being offered.
MAGNITE, INC. (MGNI) officer Katheryn Evans has filed a notice of proposed resale of company stock under Rule 144. The filing covers the potential sale of 11,100 shares of common stock with an aggregate market value of $260,357.00, based on a reported 143,424,157 shares outstanding as of September 9, 2026.
The shares proposed for sale consist of restricted stock awards granted on April 1, 2022 (10,000 shares) and February 15, 2024 (1,100 shares). Morgan Stanley Smith Barney LLC Executive Financial Services is listed as the broker. The notice also lists prior sales by Evans in the past three months.
MAGNITE, INC. (MGNI) received a Rule 144 notice that officer Katheryn Evans plans to sell up to 32,285 shares of common stock, with an indicated aggregate market value of $762,870.57, through Morgan Stanley Smith Barney LLC, with the sale expected on or about September 8, 2026 on NASDAQ.
The shares consist of stock acquired via a stock option exercise (13,546 shares) and restricted stock grants from 2023 (11,848 shares) and 2020 (6,891 shares). Evans previously sold 20,000 shares for $480,000.00 on August 6, 2026.
MAGNITE, INC. (MGNI) reported that its Chief Technology Officer, David Buonasera, sold a total of 6,414 shares of common stock in two open market or private transactions under a Rule 10b5-1 trading plan. The sales occurred on September 1, 2026 and September 2, 2026 at prices of $23.42 and $25.00 per share, respectively.
MAGNITE, INC. (MGNI) is the issuer for a Rule 144 notice filed by officer David Buonasera, covering a proposed sale of 1,043 shares of common stock through Morgan Stanley Smith Barney LLC, with an aggregate market value of $26,075.00 and 143,424,157 shares outstanding as of the planned sale date of September 2, 2026. The shares were acquired as restricted stock from the issuer on August 15, 2025. The filing also lists prior open-market sales by Buonasera over the past three months, including several transactions in June, July, August, and September 2026 with individual trade sizes ranging from 1,057 to 11,233 shares.
MAGNITE, INC. (MGNI) received a Rule 144 notice that officer David Buonasera may sell up to 5,371 shares of common stock through Morgan Stanley Smith Barney LLC on or after 09/01/2026. The shares are restricted stock acquired from the issuer on 08/15/2025, and prior sales over the last three months are also listed.
MAGNITE, INC. (MGNI) director Sarah Patricia Harden reported two open-market sales of common stock under a Rule 10b5-1 trading plan adopted on May 27, 2026. She sold 18,436 shares on August 28, 2026 at $24.00 per share and 30,550 shares on August 26, 2026 at a weighted average price of $23.31 per share, with the latter sale executed in multiple trades at prices ranging from $23.09 to $23.52 per share.
Magnite, Inc. (MGNI) is the issuer for which director Sarah Patricia Harden filed a Form 144, giving notice of a proposed sale of restricted common stock under Rule 144. The notice covers 18,436 shares of common stock with an aggregate market value of $442,464.00, to be sold through Morgan Stanley Smith Barney LLC on NASDAQ around 08/28/2026. Magnite reports 143,424,157 shares of common stock outstanding; this is a baseline figure, not the amount being sold. The filing also lists a separate sale during the past three months of 30,550 shares of common stock on 08/26/2026 for $712,166.86.
Magnite, Inc. (MGNI) is the issuer of common stock covered by a notice filed under Rule 144 by director Sarah Patricia Harden. The notice indicates a proposed sale of 30,550 shares of Magnite common stock through Morgan Stanley Smith Barney LLC, with an aggregate market value of $712,166.86. The filing cites total common shares outstanding of 143,424,157 and references underlying restricted stock awards dated June 7, 2023 (16,489 shares) and June 5, 2025 (14,061 shares).
MAGNITE, INC. (MGNI) reported that Chief Technology Officer David Buonasera had 8,102 shares of common stock withheld on August 15, 2026 at $24.73 per share. The shares were a non-discretionary forfeiture to cover tax withholding obligations tied to vesting restricted stock units, leaving him with 252,734 shares held directly.