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 solid Q4 and full-year 2025 growth and announced a new stock repurchase program. Q4 2025 revenue was $205.4 million, up 6% year over year, while Contribution ex-TAC reached $195.1 million, up 8% and at the high end of guidance.
CTV remained the main growth engine, with Q4 Contribution ex-TAC of $93.6 million, up 20% (32% excluding political), and DV+ was roughly flat. Net income for Q4 rose to $123.1 million, or $0.80 per diluted share, helped by a $90 million one-time tax benefit.
For 2025, revenue was $714.0 million, up 7%, Contribution ex-TAC was $669.6 million, up 10%, and Adjusted EBITDA was $232.1 million, up 18% with a 34.7% margin. The company ended 2025 with $553.4 million in cash and cash equivalents and zero net leverage.
Magnite repurchased or withheld about 5.2 million shares for $79.2 million in 2025, and its board approved a new share repurchase program authorizing up to $200 million of common stock through February 29, 2028. 2026 guidance targets at least 11% growth in Contribution ex-TAC, Adjusted EBITDA percentage growth in the mid-teens, Adjusted EBITDA margin above 35%, and free cash flow growth greater than 30% with about $60 million of capex.
Magnite, Inc. files its Annual Report describing a large independent, omni-channel sell-side advertising platform focused on programmatic and connected TV (CTV). The company’s SpringServe CTV platform and ClearLine tools help publishers and advertisers automate, manage, and monetize digital ad inventory across CTV, mobile, and desktop.
Magnite highlights growth strategies centered on CTV, supply path optimization, identity solutions, international expansion, and AI-driven products, while warning about intense competition, macroeconomic pressure on ad budgets, heavy dependence on large DSPs and CTV sellers, evolving privacy and AI regulation, and technology and infrastructure scaling risks.
Magnite chief product officer Adam Lee Soroca reported selling 21,529 shares of common stock at $12.00 per share in an open‑market transaction. An additional 18,933 shares at $11.70 per share were disposed of to satisfy tax withholding tied to restricted stock unit vesting. After these transactions, he directly held 388,425 shares of Magnite common stock. The open‑market sale was executed under a Rule 10b5‑1 trading plan adopted by Soroca on August 18, 2025.
Adam L. Soroca reports a proposed sale of 21,529 shares of Common stock, consisting of Restricted Stock to be sold through Morgan Stanley Smith Barney LLC on
Magnite, Inc.’s Chief Technology Officer David Buonasera reported a non-discretionary share forfeiture related to equity compensation. On February 15, 2026, 17,137 shares of common stock were surrendered at $11.70 per share to cover tax withholding obligations from vesting restricted stock units. This was a mandated arrangement by the company, not an open-market sale. After this tax-withholding disposition, Buonasera beneficially owned 302,095 shares of Magnite common stock.
Magnite, Inc. CEO Michael G. Barrett reported a tax-related share disposition. On the vesting of restricted stock units, 23,549 shares of common stock were non-discretionarily forfeited at
Magnite, Inc. Chief Accounting Officer Brian Gephart reported a tax-related share transaction involving company common stock. On the reported date, 6,149 shares were forfeited at $11.70 per share to satisfy withholding taxes tied to the vesting of restricted stock units, under a non-discretionary arrangement mandated by Magnite. Following this tax-withholding disposition, Gephart’s directly held stake stands at 122,385 common shares.
MAGNITE, INC. President, Operations Katie Seitz Evans reported a non-discretionary forfeiture of 27,428 shares of common stock at $11.70 per share. The shares were withheld by the company to cover tax obligations arising from the vesting of restricted stock units. After this tax-withholding disposition, she holds 508,044 shares directly.
MAGNITE, INC. Chief Financial Officer David Day reported a tax-related share disposition. On February 15, 2026, 30,617 shares of common stock were forfeited at $11.70 per share to cover withholding taxes on vesting restricted stock units, a non-discretionary transaction, leaving him with 507,459 shares directly owned.
MAGNITE, INC. chief legal officer Aaron Salt reported a tax-withholding disposition of 12,761 shares of common stock. These shares were non-discretionarily forfeited to the company at $11.70 per share to cover tax obligations arising from the vesting of restricted stock units, rather than being sold on the open market. After this withholding event, Salt directly holds 275,643 shares of Magnite common stock.