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.'s chief financial officer David Day reported the vesting of performance-based stock units and related tax withholding. On January 9, 2026, he acquired 72,675 shares of common stock at $0 per share upon the vesting of performance stock units granted under Magnite's Amended and Restated 2014 Equity Incentive Plan. The number of units that vested was based on the company achieving 126.35% of its performance goal over a three-year total stockholder return period relative to the Russell 2000 index.
To cover tax withholding obligations from this vesting, 35,169 shares of common stock were automatically forfeited at a price of $16.17 per share pursuant to an arrangement mandated by the company, rather than an open-market sale decision by the executive. After these transactions, Day directly beneficially owned 538,076 shares of Magnite common stock.
Magnite, Inc. chief product officer Adam Lee Soroca reported the vesting and settlement of performance stock units into common shares. On January 9, 2026, 51,300 performance stock units converted into an equal number of common shares at $0 exercise price under the company’s Amended and Restated 2014 Equity Incentive Plan, following achievement of 126.35% of the target based on a three-year total stockholder return test versus Russell 2000 companies. To cover tax withholding on this vesting, 25,330 common shares were automatically forfeited at a price of $16.17 per share. After these transactions, Soroca directly owned 428,887 shares of Magnite common stock.
Magnite, Inc. chief legal officer Aaron Saltz reported the vesting of performance stock units and related share withholding for taxes. On January 9, 2026, 28,215 performance stock units converted into 28,215 shares of Magnite common stock at an exercise price of $0 under the company’s Amended and Restated 2014 Equity Incentive Plan. The award’s vesting was based on Magnite’s total stockholder return over a three-year period relative to companies in the Russell 2000 index, with performance certified at 126.35% of target. To satisfy tax withholding obligations tied to this vesting, 15,026 shares of common stock were forfeited at a price of $16.17 per share under an issuer‑mandated arrangement. Following these transactions, Saltz directly held 288,404 shares of Magnite common stock.
Magnite, Inc. reported an equity vesting event for its Chief Technology Officer, David Buonasera. On January 9, 2026, 22,935 performance stock units (PSUs) granted under the company’s Amended and Restated 2014 Equity Incentive Plan converted into the same number of common shares at an exercise price of $0.
The PSUs vested based on Magnite’s total stockholder return over a three-year period starting January 1, 2023, compared with companies in the Russell 2000 index. The award could vest from 0% to 150% of the target amount, and the compensation committee determined achievement of 126.35%, resulting in 22,935 shares vesting.
To cover tax withholding obligations tied to this vesting, 12,330 shares of common stock were automatically forfeited at a price of $16.17 per share. After these transactions, Buonasera directly held 319,232 shares of Magnite common stock.
Magnite, Inc. executive Sean Patrick Buckley, President, Revenue, reported the vesting of performance-based equity and related tax share withholding. On January 9, 2026, 64,125 performance stock units were converted into an equal number of shares of Magnite common stock at an exercise price of $0 under the company’s Amended and Restated 2014 Equity Incentive Plan. The award’s vesting was based on Magnite’s total stockholder return over a three-year period starting January 1, 2023, relative to Russell 2000 companies, with achievement determined at 126.35%, resulting in the 64,125 vested shares. To cover tax withholding tied to this vesting, 30,369 shares of common stock were forfeited at a price of $16.17 per share. Following these transactions, Buckley directly holds 429,941 shares of Magnite common stock.
Magnite, Inc. President, Operations Katie Seitz Evans reported performance-based stock vesting and related tax share withholding. On January 9, 2026, 51,300 performance stock units converted into 51,300 shares of common stock at $0 under the company’s Amended and Restated 2014 Equity Incentive Plan, based on 126.35% total shareholder return achievement over a three-year period versus the Russell 2000 index. To cover tax withholding on this vesting, 26,836 shares of common stock were automatically forfeited at $16.17 per share under an issuer-mandated arrangement. After these transactions, Evans directly held 535,472 shares of Magnite common stock.
Magnite, Inc. reported insider equity activity by CEO and director Michael G. Barrett. On January 9, 2026, 213,750 performance stock units vested and were converted into an equal number of shares of Magnite common stock at an exercise price of $0 under the company’s Amended and Restated 2014 Equity Incentive Plan. On the same date, 109,742 shares of common stock were automatically forfeited at $16.17 per share to satisfy tax withholding obligations tied to this vesting. After these transactions, Barrett directly held 435,711 shares of Magnite common stock.
Magnite, Inc. (MGNI) reported an insider stock sale by a senior executive. The company’s President, Revenue filed a Form 4 disclosing that on 11/24/2025, they sold 2,213 shares of Magnite common stock at a price of $14.50 per share in an open-market transaction.
After this sale, the executive beneficially owns 268,912 shares of Magnite common stock in direct ownership. The filing notes that the transaction was executed under a pre-arranged Rule 10b5-1 trading plan adopted on 11/24/2023, which is designed to allow insiders to trade shares according to a preset schedule.
Magnite, Inc. director reports stock sale
A director of Magnite, Inc. (MGNI) reported selling 12,500 shares of common stock on 11/21/2025. The sale is coded as an open-market or private sale, with a weighted average price of $14.22 per share, based on multiple trades executed between $14.22 and $14.23. After this transaction, the director beneficially owns 53,917 shares of Magnite common stock in direct ownership form.
The filing notes that detailed trade-by-trade pricing information within the reported range is available upon request from the company, any security holder, or the SEC staff.
Magnite, Inc. insider transaction: A company officer, identified as President, Revenue, reported two transactions in Magnite, Inc. common stock. On 11/15/2025, 11,642 shares were forfeited at $14.15 per share to cover tax withholding obligations tied to the vesting of restricted stock units, as required by the company. On 11/18/2025, 4,426 shares were sold at a weighted average price of $13.36 per share under a pre‑arranged Rule 10b5‑1 trading plan adopted on November 24, 2023. After these transactions, the officer beneficially owned 271,125 shares of Magnite common stock directly.