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 ownership filing: Vanguard Capital Management reports beneficial ownership of 7,283,329 shares of Common Stock, representing 5.04% of the class. The filing shows Vanguard has sole dispositive power over the 7,283,329 shares and sole voting power for 1,092,926 shares.
The Schedule 13G states these holdings reflect positions held across Vanguard Capital Management LLC and affiliated business divisions and that no other single person holds over 5% of the class. The filing is signed on 04/30/2026.
Magnite Inc reported that Vanguard Portfolio Management beneficially owns 7,849,870 shares of common stock, representing 5.43% of the class, as disclosed on a Schedule 13G. The filing shows sole voting power of 123,665 shares and sole dispositive power over 7,849,870 shares.
Magnite, Inc. is asking stockholders to vote at its June 8, 2026 virtual annual meeting on four main items: electing three Class III directors through 2029, ratifying Deloitte & Touche LLP as auditor, approving executive pay on an advisory basis, and choosing how often to hold future say‑on‑pay votes.
The board recommends voting for all director nominees, for Deloitte, for executive compensation, and selecting a 1‑year say‑on‑pay frequency. The proxy also highlights 2025 results, including record revenue of $714.0 million, Contribution ex‑TAC of $669.6 million, and Adjusted EBITDA of $232.1 million, along with governance practices such as a majority‑independent board, annual evaluations, and equity‑focused director compensation.
Magnite, Inc. announced that Chief Financial Officer David Day plans to retire, with a structured transition in place. He is expected to remain CFO through September 30, 2026, then serve as a non-executive advisor until May 31, 2027 to support an orderly handover.
The board has begun a comprehensive search for a new CFO, considering both internal and external candidates, and Mr. Day will help identify his successor. Magnite also reaffirmed its previously disclosed expectations for financial performance for Q1 and full year 2026, referencing guidance from its Q4 2025 earnings release.
Magnite, Inc. reported a leadership change in its product organization. The company announced that Chief Product Officer Adam Soroca will cease serving in that role effective April 8, 2026. He will remain with Magnite as an advisor through May 15, 2026 to support transition activities.
In connection with his termination of employment, Mr. Soroca will receive severance benefits under his existing Executive Severance and Vesting Acceleration Agreement, which is described in Magnite’s 2025 proxy statement. The filing does not indicate any change to Magnite’s core operations or strategy beyond this executive transition.
The Vanguard Group amended its Schedule 13G/A to report zero beneficial ownership of Magnite Inc common stock following an internal realignment. The filing states certain Vanguard subsidiaries will report ownership separately in reliance on SEC Release No. 34-39538, and that Vanguard no longer is deemed to beneficially own those subsidiary holdings.
The form lists Amount beneficially owned: 0 and Percent of class: 0%. The filing is signed by Ashley Grim, Head of Global Fund Administration, dated 03/27/2026.
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.