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. (NASDAQ: MGNI) files a range of reports and disclosures with the U.S. Securities and Exchange Commission, providing investors with detailed information about its operations as an independent sell-side advertising company. This page aggregates Magnite’s SEC filings and pairs them with AI-powered tools to help readers interpret complex regulatory documents.
Magnite’s recent Form 8-K filings illustrate how the company communicates material events. For example, it has furnished press releases announcing financial results for quarters ended June 30 and September 30, 2025 under Item 2.02, and it has disclosed the filing of a lawsuit against Google LLC under Item 7.01, along with related risk factor updates under Item 8.01. Another 8-K describes a material definitive agreement amending a sublease to expand leased premises.
Through this page, users can quickly access Magnite’s current reports on Form 8-K, as well as its periodic reports such as annual reports on Form 10-K and quarterly reports on Form 10-Q, which are referenced in its forward-looking statements and risk factor discussions. These filings provide insight into Magnite’s financial condition, non-GAAP metrics like Contribution ex-TAC and Adjusted EBITDA as described in its earnings materials, and the risks it associates with its business and litigation.
AI-powered summaries highlight key points from lengthy filings, helping readers understand sections on results of operations, risk factors, material agreements, and legal proceedings without reading every page. Real-time updates ensure that new filings from EDGAR appear promptly, while dedicated views make it easier to review items such as executive commentary in earnings releases or disclosures related to Magnite’s relationship with major partners like Google. This page is a central resource for analyzing MGNI’s regulatory history and ongoing reporting obligations.
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.
Magnite, Inc. reported insider transactions by its Chief Product Officer. On 11/15/2025, 9,422 shares of common stock were forfeited at $14.15 per share to cover tax withholding tied to the vesting of restricted stock units, under an arrangement mandated by the company. After this, the officer held 336,971 shares.
On 11/18/2025, the officer sold 10,857 shares of Magnite common stock at a weighted average price of $13.23 per share, with individual sale prices ranging from $13.13 to $13.30. This sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on May 28, 2025. Following the reported sale, the officer directly owned 326,114 shares of Magnite common stock.
Magnite, Inc. (MGNI) reported a routine insider share transaction by its President, Operations. On 11/15/2025, the executive had 10,354 shares of common stock forfeited at a reported price of $14.15 per share. This was a non-discretionary forfeiture required by the company to cover tax withholding obligations tied to the vesting of restricted stock units, meaning the shares were withheld rather than sold on the open market. Following this tax-related forfeiture, the officer beneficially owned 383,735 shares of Magnite common stock in direct form.
Magnite, Inc. (MGNI) reported an insider equity transaction involving its chief technology officer. On 11/15/2025, 7,129 shares of common stock were forfeited in a non-discretionary transaction to cover tax withholding obligations tied to the vesting of restricted stock units. After this tax-related forfeiture, the reporting person beneficially owned 231,824 shares of Magnite common stock. This total includes 324 shares acquired on November 15, 2025 under the company’s Employee Stock Purchase Plan.
Magnite, Inc. (MGNI) reported an insider equity transaction by its Chief Accounting Officer on 11/15/2025. The filing shows a disposition of 3,549 shares of common stock at $14.15 per share, coded as transaction type "F," which indicates shares were withheld by the company to cover tax obligations. These shares were forfeited in connection with the vesting of restricted stock units under a non-discretionary, issuer-mandated arrangement. Following this tax withholding transaction, the reporting officer beneficially owns 89,349 shares of Magnite common stock directly.
Magnite, Inc. insider Aaron Saltz, Chief Legal Officer, reported an administrative share transaction related to equity compensation. On 11/15/2025, 5,695 shares of Magnite common stock were forfeited at a price of $14.15 per share to cover tax withholding obligations arising from the vesting of restricted stock units. After this tax-related forfeiture, Saltz beneficially owned 209,384 shares of Magnite common stock directly. The transaction was characterized as a non-discretionary forfeiture mandated by the company’s arrangement for handling tax obligations on vesting awards.
Magnite, Inc. reported an insider equity transaction by its CEO and director. On 11/15/2025, the reporting person disposed of 12,198 shares of Magnite common stock at a price of $14.15 per share. This disposition is identified with transaction code "F," which indicates that the shares were withheld by the company to satisfy tax withholding obligations.
After this tax-related forfeiture tied to the vesting of restricted stock units, the reporting person beneficially owns 237,659 shares of Magnite common stock in direct ownership. The filing notes that the forfeiture was non-discretionary and mandated by Magnite under an arrangement designed to cover the reporting person’s tax liabilities arising from equity compensation.