Magnite, Inc. SEC filings MGNI
Magnite, Inc. has 1,006 filings in SEC EDGAR's recent list, going back to Jan 17, 2019. Its latest annual report, Form ARS, was filed on Apr 21, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 4, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 4, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| S-8 | Employee stock plan registration | Mar 2, 2022 | — |
| POS AM | Post effective amendment | Jun 23, 2021 | — |
| S-8 | Employee stock plan registration | Apr 9, 2020 | — |
| 424B3 | Prospectus | Mar 23, 2020 | — |
| 424B3 | Prospectus | Feb 13, 2020 | — |
| S-4/A | Amendment to form s-4 | Feb 7, 2020 | — |
| S-4 | Registration for a merger or exchange | Jan 30, 2020 | — |
Showing 7 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Services-Computer Programming, Data Processing, Etc. (SIC 7370)
- Listed as
- MGNI (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- New York, NY
- SEC filer status
- Large accelerated filer
- SEC CIK
- 1595974
- Former names
- RUBICON PROJECT, INC. (until Jun 30, 2020)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.