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.
Programmatic advertising can feel like alphabet soup, and Magnite’s filings are no exception. Revenue splits across CTV, online video, display, and audio, while acquisitions and traffic-acquisition costs add layers of jargon that stretch a single 10-K past 300 pages. If you have ever asked, “How do I find Magnite insider trading Form 4 transactions?” or “Where is the Magnite quarterly earnings report 10-Q filing?”, you already know the challenge.
Stock Titan solves it. Our AI-powered summaries turn dense disclosures into clear takeaways—understanding Magnite SEC documents with AI instead of wrestling with footnotes. Get real-time alerts the moment a Magnite Form 4 insider transactions real-time notice hits EDGAR, see trend charts inside every Magnite earnings report filing analysis, and access side-by-side comparisons of segment margins pulled directly from the latest Magnite annual report 10-K simplified.
All SEC materials are covered: 10-Q quarterly updates, 8-K event notices, definitive proxy statements on executive compensation, and even niche exhibits. Need the story behind a sudden CTV partnership? Click the Magnite 8-K material events explained tile. Curious about option grants? The Magnite executive stock transactions Form 4 table is already filtered. From “Magnite proxy statement executive compensation” to “Magnite SEC filings explained simply,” every document is searchable, summarized, and linked—so analysts can monitor competitive positioning, track insider sentiment, and act on data without sifting through PDFs.
Magnite, Inc. entered into a First Amendment to its Sublease with Zillow Group, Inc. that is expected to be effective as of November 1, 2025. The amendment expands the leased premises to add the entire 8th floor; prior to the amendment the leased premises consisted of the entire 9th floor. The company states the description in the notice is not complete and is qualified in its entirety by the full First Amendment, which will be filed as an exhibit to Magnite's Quarterly Report for the quarter ended September 30, 2025. No other terms, financial commitments, or lease costs are disclosed in this notice.
Magnite, Inc. (MGNI) officer sale disclosed on Form 4. Chief Technology Officer David Buonasera reported a sale of 2,950 shares of Magnite common stock on 09/03/2025 at a price of $25.37 per share, leaving him with 238,629 shares beneficially owned following the transaction. The filing states the sale was executed pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 15, 2024. The form was signed by attorney-in-fact Aaron Saltz on 09/04/2025.
Magnite insider exercise and sales under 10b5-1 plan. Adam Lee Soroca, Chief Product Officer, exercised 24,986 vested employee stock options at a $4.92 exercise price on 09/02/2025 and immediately sold those shares in multiple transactions. He sold 9,269 shares at a weighted average price of $24.22 (range $23.74–$24.66) and 15,717 shares at a weighted average price of $24.97 (range $24.78–$25.05), executing the trades pursuant to a Rule 10b5-1 plan adopted May 28, 2025. After these transactions his beneficial ownership decreased from 371,379 to 346,393 shares. The options exercised were fully vested and the underlying shares were granted as compensation.
Magnite, Inc. (MGNI) filing a Form 144 notifies the market that 27,671 shares of common stock held by the selling person will be offered for sale through Morgan Stanley Smith Barney LLC on 09/04/2025 on NASDAQ. The filing reports an aggregate market value of $683,849.80 based on the planned sale and notes total shares outstanding of 142,399,305. The shares were acquired as restricted stock from the issuer on 08/15/2022. The filer also reported a recent sale of 2,961 shares on 08/18/2025 for $70,629.62. The notice includes the standard representation that the seller is not aware of any undisclosed material adverse information.
Form 144 filed for Magnite, Inc. (MGNI) discloses a proposed sale of 2,950 restricted common shares acquired from the issuer on 08/15/2024. The seller lists a broker as Morgan Stanley Smith Barney LLC and values the proposed sale at $74,841.50 with an approximate sale date of 09/03/2025 on NASDAQ. The filing also reports recent sales by the same person: 7,834 shares sold on 08/18/2025 for $186,866.75 and 9,289 shares sold on 06/30/2025 for $204,358.00. The filing shows 142,399,305 shares outstanding and includes the seller's declaration regarding absence of undisclosed material information.
Insider sale notice: This Form 144 by an issuer of record for Magnite, Inc. (MGNI) reports a proposed sale of 24,986 common shares through Morgan Stanley Smith Barney LLC on 09/02/2025 with an aggregate market value of $616,884.51. The filer reports those shares were acquired the same day, 09/02/2025, via stock option exercise and paid for in cash. The filing also discloses recent open-market dispositions by Adam L. Soroca totaling 116,710 shares sold across five transactions between 06/06/2025 and 08/19/2025, generating gross proceeds shown per trade. The notice includes the required attestation that the seller is not aware of undisclosed material adverse information.
Aaron Saltz, Chief Legal Officer of Magnite, Inc. (MGNI), reported a sale of 12,403 shares of Magnite common stock on 08/29/2025 at a reported price of $26.07 per share, reducing his direct beneficial ownership to 229,781 shares. The filing is a Form 4 statement of changes in beneficial ownership and is signed by Mr. Saltz.
Magnite, Inc. (MGNI) reporting person Katie Seitz Evans, President, Operations, reported an insider sale. On 08/27/2025 Ms. Evans disposed of 21,509 shares of Magnite common stock at a weighted average price of $25.52 per share (sales occurred at prices ranging from $25.52 to $25.58). After the transaction she beneficially owned 394,089 shares. The Form 4 was filed as a single reporting person form and signed by an attorney-in-fact, Aaron Saltz, on 08/29/2025. The filer offered to provide the breakdown of shares sold at each price on request.
Magnite, Inc. (MGNI) Form 144 summary: This notice reports a proposed sale under Rule 144 of 12,403 common shares through Morgan Stanley Smith Barney, with an aggregate market value of $323,399.54. The shares were originally acquired as restricted stock on 02/14/2021 from the issuer and were fully paid on that date. The filer (identified in prior transactions as Aaron Saltz) has disclosed multiple recent open-market sales during June–August 2025 totaling 69,325 shares with gross proceeds shown for each trade. The filing includes the standard representation that the seller is not aware of undisclosed material adverse information about the issuer.
Form 144 filed for Magnite, Inc. (MGNI) shows a proposed sale of 21,509 common shares through Morgan Stanley Smith Barney with an aggregate market value of $548,952.70, to be sold approximately on 08/27/2025 on NASDAQ. The filing discloses prior restricted stock acquisitions dated 02/14/2022, 04/01/2022 and 02/14/2023 totaling 21,509 shares acquired from the issuer and paid in full on acquisition dates. The filing also lists sales by Katheryn Evans totaling 98,327 common shares during June–August 2025 with gross proceeds disclosed per trade.
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